MULTI-SOURCE SOLID WASTE RECYCLING METHOD BASED ON COMPOSITION DESIGN FOR CALCIUM-SILICON-ALUMINUM-MAGNESIUM OXIDE

Abstract

A multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide includes collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material into slag, and uses carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride and silicon carbide in the multi-source solid waste as reducing agents. The slag provides a high-temperature homogeneous reaction environment and serves as a solvent for reactants, the reducing agents reduce valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode.

Claims

1. A multi-source solid waste recycling method, comprising: collecting multi-source solid waste composition data to determine contents of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide in the multi-source solid wastes; determining addition amount of the multi-source solid wastes as inorganic non-metallic raw materials to prepare an inorganic non-metallic material with a target composition of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide; and melting the multi-source solid wastes into slag and reducing metals in the slag by a reducing agent in the multi-source solid wastes to obtain an alloy and the inorganic non-metallic material, wherein determining addition amount of the multi-source solid wastes as inorganic non-metallic raw materials to prepare an inorganic non-metallic material with a target composition of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide comprises: determining a main mineral phase in the inorganic non-metallic material, determining weight percentage ranges of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO of the main mineral phase, and selecting two or more multi-source solid wastes as the inorganic non-metallic raw materials; wherein determining addition amount of the multi-source solid wastes comprises calculating the addition amount of the multi-source solid wastes by a composition matrix: $\left[\begin{array}{cccc}{P}_1& P_2& .Math.& P_n\end{array}\right]\left[\begin{array}{ccccc}1& Q_{1-\mathrm{CaO}}& Q_{1-\mathrm{SiO}2}& Q_{1-\mathrm{Al}2O3}& Q_{1-\mathrm{MgO}}\\ 1& Q_{2-\mathrm{CaO}}& Q_{2-\mathrm{SiO}2}& Q_{s-\mathrm{Al}2O3}& Q_{2-\mathrm{MgO}}\\ .Math.& .Math.& .Math.& .Math.& .Math.\\ 1& Q_{n-\mathrm{CaO}}& Q_{n-\mathrm{SiO}2}& Q_{n-\mathrm{Al}2O3}& Q_{n-\mathrm{MgO}}\end{array}\right]*\frac{1}{{.Math.}_{i=1}^n{P}_i*G_i}=\left[\begin{array}{ccccc}{.Math.}_{i=1}^n{P}_i*G_i& & & & \end{array}\right]$ wherein P.sub.n is the addition amount of an n.sup.th solid waste; Q.sub.n-CaO is a content of CaO in the n.sup.th solid waste; Q.sub.n-SiO2 is a content of SiO.sub.2 in the n.sup.th solid waste; Q.sub.n-Al2O3 is a content of Al.sub.2O.sub.3 in the n.sup.th solid waste; Q.sub.n-MgO is a content of MgO in the n.sup.th solid waste; G.sub.i is a total content of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO in an i.sup.th solid waste; is a content of CaO in a target mineral phase composition region; is a content of SiO.sub.2 in the target mineral phase composition region; is a content of Al.sub.2O.sub.3 in the target mineral phase composition region; is a content of MgO in the target mineral phase composition region; and a sum of , , , and is 1; wherein the addition amount and content refer to weight percentage.

2. (canceled)

3. The multi-source solid waste recycling method according to claim 1, wherein the slag provides a high-temperature homogeneous reaction environment for reactants, and converts reduction reactions from solid/solid and solid/liquid heterogeneous reactions into homogeneous reactions.

4. The multi-source solid waste recycling method according to claim 1, wherein the reducing agent in the multi-source solid waste is selected from at least one of carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide.

5. The multi-source solid waste recycling method according to claim 1, wherein the inorganic non-metallic material is selected from one of a silicate-based inorganic non-metallic material, an aluminate-based inorganic non-metallic material, an aluminosilicate-based inorganic non-metallic material, and a magnesioaluminate-based inorganic non-metallic material.

6. (canceled)

Description

BRIEF DESCRIPTION OF DRAWINGS

[0050] FIG. 1 is a flow chart of a process according to the present invention.

[0051] FIG. 2 is a graph showing a relationship between the Gibbs free energy and a temperature of the reaction of different substances with V.sub.2O.sub.5, Cr.sub.2O.sub.3, MnO, Fe.sub.2O.sub.3, CoO, NiO, CuO, ZnO, MoO.sub.3, CdO, SnO.sub.2 and PbO.sub.2 with an abscissa being the reaction temperature and an ordinate being the Gibbs free energy of reaction, wherein FIG. 2(a) is carbon, FIG. 2(b) is metallic aluminum, FIG. 2(c) is aluminum nitride, FIG. 2(d) is aluminum carbide, FIG. 2(e) is silicon nitride, and FIG. 2(f) is silicon carbide.

[0052] FIG. 3 shows a reaction process of reducing valuable metal oxides with aluminum nitride.

[0053] FIG. 4 is an XRD pattern of an aluminate-based inorganic non-metallic material according to Example 15.

[0054] FIG. 5 is an XRD pattern of an aluminate-based inorganic non-metallic material according to Example 17.

[0055] FIG. 6 is an XRD pattern of an aluminosilicate-based inorganic non-metallic material according to Example 21.

[0056] FIG. 7 is an XRD pattern of amorphous slag according to Comparative Example 1.

DETAILED DESCRIPTION OF EMBODIMENTS

[0057] To make the objectives, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and do not limit the present invention.

[0058] An embodiment of the present invention provides a multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide, including the following steps: collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melting the raw material into slag, wherein a reducing agent in the multi-source solid waste reduces valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode.

[0059] A calculation method for a composition matrix of the calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units is as follows:

[00003]$\left[\begin{array}{cccc}{P}_1& P_2& .Math.& P_n\end{array}\right]\left[\begin{array}{ccccc}1& Q_{1-\mathrm{Ca}0}& Q_{1-\mathrm{Si}02}& Q_{1-A1203}& Q_{1-\mathrm{Mg}0}\\ 1& Q_{2-\mathrm{Ca}0}& Q_{2-\mathrm{Si}02}& Q_{2-A1203}& Q_{2-\mathrm{Mg}0}\\ .Math.& .Math.& .Math.& .Math.& .Math.\\ 1& Q_{n-\mathrm{Ca}0}& Q_{n-\mathrm{Si}02}& Q_{n-A1203}& Q_{n-\mathrm{Mg}0}\end{array}\right]*\frac{1}{{.Math.}_{i=1}^n{P}_i*G_i}=\left[\begin{array}{ccccc}{.Math.}_{i=1}^n{P}_i*G_i& & & & \end{array}\right]$

[0060] wherein P.sub.n is an addition amount of an n.sup.th solid waste; Q.sub.n-CaO is a content of CaO in the n.sup.th solid waste; Q.sub.n-SiO2 is a content of SiO.sub.2 in the n.sup.th solid waste; Q.sub.n-Al2O3 is a content of Al.sub.2O.sub.3 in the n.sup.th solid waste; Q.sub.n-MgO is a content of MgO in the n.sup.th solid waste; G.sub.i is a total content of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO in an i.sup.th solid waste; is a content of CaO in a target mineral phase composition region; is a content of SiO.sub.2 in the target mineral phase composition region; is a content of Al.sub.2O.sub.3 in a target mineral phase composition region; is a content of MgO in a target mineral phase composition region; a sum of , , , and is 1; and the addition amount and content refer to weight percentage. Several different cases are exemplified below.

Example 1

[0061] The waste incineration fly ash, the waste incineration bottom ash and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with tricalcium silicate (Ca.sub.3SiO.sub.5) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a tricalcium silicate phase was selected, a composition range of the tricalcium silicate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 65.0-75.0 wt. %, 15.0-25.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash, the waste incineration bottom ash and the coal gangue and the composition data of the tricalcium silicate were substituted into a composition calculation matrix:

[00004]$\left[\begin{array}{ccc}{P}_{11}& P_{12}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.259& 0.421& 0.086& 0.037\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{11}*0.592+P_{12}*0.803+P_{13}*0.788}=\left[P_{11}*0.592+P_{12}*0.803+P_{13}*0.788\begin{array}{cccc}{m}_{11}& m_{12}& m_{13}& m_{14}\end{array}\right]$

where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.12 represents P.sub.waste incineration bottom ash, P.sub.13 represents P.sub.coal gangue, m.sub.01 represents 0.6500.750, m.sub.02 represents 0.1500.250, m.sub.03 represents 00.100, and m.sub.04 represents 00.100.

[0062] The matrix was solved to obtain the addition amounts of the waste incineration fly ash, the waste incineration bottom ash and the coal gangue, that is, P.sub.waste incineration fly ash, P.sub.waste incineration bottom ash and P.sub.coal gangue are 90.8 wt. %, 1.7 wt. % and 7.5 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1800 C., this temperature was kept for 3 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

TABLE-US-00001 TABLE 1 Multi-source solid waste compositions (wt. %) Compositions CaO SiO.sub.2 Al.sub.2O.sub.3 MgO Na.sub.2O Fe.sub.2O.sub.3 Others Desulfurized gypsum 67.4 4.3 1.3 1.9 1.1 24.0 Steel slag 57.4 23.0 1.0 3.0 0.1 6.0 9.5 Magnesium slag 50.2 41.6 1.0 2.0 4.2 1.0 Electric furnace slag 49.7 27.8 3.4 6.5 12.6 Waste incineration 46.3 8.4 1.8 2.7 6.2 1.3 33.3 fly ash Phosphogypsum 37.8 8.3 0.9 0.1 0.1 0.6 52.2 Blast furnace slag 35.3 34.9 16.3 10.1 0.8 2.6 Pickling sludge 26.3 6.9 2.1 1.3 1.3 26.3 35.8 Waste glass 9.5 73.9 0.6 3.1 11.4 0.4 1.1 Iron tailings 3.2 63.3 15.0 4.3 0.8 11.2 2.2 Fly ash 10.1 54.0 18.4 1.1 1.0 9.6 5.8 Coal gangue 3.5 51.3 21.8 2.2 6.4 14.8 Desulfurized 16.2 42.2 10.1 5.1 1.6 5.7 19.1 manganese slag Waste incineration 25.9 42.1 8.6 3.7 3.9 5.7 10.1 bottom ash Municipal sludge 19.5 35.4 18.7 2.3 9.8 14.3 Aluminum ash slag 1.5 4.6 79.3 5.7 0.9 3.9 4.1 Red mud 0.8 11.5 24.0 0.1 6.7 48.8 14.8

Example 2

[0063] The waste incineration fly ash, the waste incineration bottom ash and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with tricalcium silicate (Ca.sub.3SiO.sub.5) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a tricalcium silicate phase was selected, a composition range of the tricalcium silicate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 65.0-75.0 wt. %, 15.0-25.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash, the waste incineration bottom ash and the coal gangue and the composition data of the tricalcium silicate were substituted into a composition calculation matrix:

[00005]$\left[\begin{array}{ccc}{P}_{11}& P_{12}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.259& 0.421& 0.086& 0.037\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{11}*0.592+P_{12}*0.803+P_{13}*0.788}=\left[P_{11}*0.592+P_{12}*0.803+P_{13}*0.788\begin{array}{cccc}{m}_{11}& m_{12}& m_{13}& m_{14}\end{array}\right]$

where, P.sub.11 represents

[00006]$P_{\begin{array}{c}\mathrm{waste}\\ \mathrm{incineration}\\ \mathrm{fly}\mathrm{ash}\end{array}},$

P.sub.12 represents

[00007]$P_{\begin{array}{c}\mathrm{waste}\\ \mathrm{incineration}\\ \mathrm{bottom}\mathrm{ash}\end{array}},$

P.sub.13 represents

[00008]$P_{\begin{array}{c}\mathrm{coal}\\ \mathrm{gangue}\end{array}},$

m.sub.01 represents 0.6500.750, m.sub.02 represents gangue 0.1500.250, m.sub.03 represents 00.100, and m.sub.04 represents 00.100.

[0064] The matrix was solved to obtain the addition amounts of the waste incineration fly ash, the waste incineration bottom ash and the coal gangue, that is, P.sub.waste incineration fly ash, P.sub.waste incineration bottom ash and P.sub.coal gangue are 83.2 wt. %, 12.9 wt. % and 3.9 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1760 C., this temperature was kept for 2.5 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 3

[0065] The desulfurized gypsum, the steel slag and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with dicalcium silicate (Ca.sub.2SiO.sub.4) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a dicalcium silicate phase was selected, a composition range of the dicalcium silicate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 55.0-65.0 wt. %, 25.0-35.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum, the steel slag and the coal gangue and the composition data of the dicalcium silicate were substituted into a composition calculation matrix:

[00009]$\left[\begin{array}{ccc}{P}_{14}& P_{15}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 0.013& 0.019\\ 1& 0.574& 0.23& 0.01& 0.03\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{14}*0.749+P_{15}*0.844+P_{13}*0.788}=\left[P_{14}*0.749+P_{15}*0.844+P_{13}*0\text{.788}\begin{array}{cccc}{m}_{05}& m_{06}& m_{07}& m_{08}\end{array}\right]$

[0066] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.15 represents P.sub.steel slag, P.sub.13 represents P.sub.coal gangue, m.sub.05 represents 0.5500.650, m.sub.06 represents 0.2500.350, m.sub.07 represents 00.100, and m.sub.08 represents 00.100.

[0067] The matrix was solved to obtain the addition amounts of the desulfurized gypsum, the steel slag and the coal gangue, that is, P.sub.desulfurized gypsum, P.sub.steel slag and P.sub.coal gangue are 33.1 wt. %, 41.7 wt. % and 25.2 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1750 C., this temperature was kept for 2.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 4

[0068] The desulfurized gypsum, the steel slag and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with dicalcium silicate (Ca.sub.2SiO.sub.4) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a dicalcium silicate phase was selected, a composition range of the dicalcium silicate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 55.0-65.0 wt. %, 25.0-35.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum, the steel slag and the coal gangue and the composition data of the dicalcium silicate were substituted into a composition calculation matrix:

[00010]$\left[\begin{array}{ccc}{P}_{14}& P_{15}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 0.013& 0.019\\ 1& 0.574& 0.23& 0.01& 0.03\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{14}*0.749+P_{15}*0.844+P_{16}*0.788}=\left[P_{14}*0.749+P_{15}*0.844+P_{13}*0\text{.788}\begin{array}{cccc}{m}_{15}& m_{16}& m_{17}& m_{18}\end{array}\right]$

[0069] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.15 represents P.sub.steel slag, P.sub.13 represents P.sub.coal gangue, m.sub.05 represents 0.5500.650, m.sub.06 represents 0.2500.350, m.sub.07 represents 00.100, and m.sub.08 represents 00.100.

[0070] The matrix was solved to obtain the addition amounts of the desulfurized gypsum, the steel slag and the coal gangue, that is, P.sub.desulfurized gypsum, P.sub.steel slag and P.sub.coal gangue are 13.3 wt. %, 69.2 wt. % and 17.5 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1710 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 5

[0071] The steel slag, the waste incineration bottom ash and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with rankinite (Ca.sub.3Si.sub.2O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a rankinite phase was selected, a composition range of the rankinite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 48.0-58.0 wt. %, 32.0-42.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the steel slag, the waste incineration bottom ash and the coal gangue and the composition data of the rankinite were substituted into a composition calculation matrix:

[00011]$\left[\begin{array}{ccc}{P}_{15}& P_{12}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.574& 0.230& 0.010& 0.030\\ 1& 0.259& 0.421& 0.086& 0.037\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{15}*0.844+P_{12}*0.803+P_{13}*0.788}=\left[P_{15}*0.844+P_{12}*0.803+P_{13}*0.788\begin{array}{cccc}{m}_{09}& m_{10}& m_{11}& m_{12}\end{array}\right]$

[0072] where, P.sub.15 represents P.sub.steel slag, P.sub.12 represents P.sub.waste incineration bottom ash, P.sub.13 represents P.sub.coal gangue, m.sub.09 represents 0.4800.580, m.sub.10 represents 0.3200.420, m.sub.11 represents 00.100, and m.sub.12 represents 00.100.

[0073] The matrix was solved to obtain the addition amounts of the steel slag, the waste incineration bottom ash and the coal gangue, that is, P.sub.steel slag, P.sub.waste incineration bottom ash and P.sub.coal gangue are 72.2 wt. %, 10.8 wt. % and 17.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1600 C., this temperature was kept for 1.5 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 6

[0074] The steel slag, the waste incineration bottom ash and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with rankinite (Ca.sub.3Si.sub.2O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a rankinite phase was selected, a composition range of the rankinite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 48.0-58.0 wt. %, 32.0-42.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the steel slag, the waste incineration bottom ash and the coal gangue and the composition data of the rankinite were substituted into a composition calculation matrix:

[00012]$\left[\begin{array}{ccc}{P}_{15}& P_{12}& P_{13}\end{array}\right]\left[\begin{array}{ccccc}1& 0.574& 0.230& 0.010& 0.030\\ 1& 0.259& 0.421& 0.086& 0.037\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{15}*0.844+P_{12}*0.803+P_{13}*0.788}=\left[P_{15}*0.844+P_{12}*0.803+P_{13}*0.788\begin{array}{cccc}{m}_{09}& m_{10}& m_{11}& m_{12}\end{array}\right]$

[0075] where, P.sub.15 represents P.sub.steel slag, P.sub.12 represents P.sub.waste incineration bottom ash, P.sub.13 represents P.sub.coal gangue, m.sub.09 represents 0.4800.580, m.sub.10 represents 0.3200.420, m.sub.11 represents 00.100, and m.sub.12 represents 00.100.

[0076] The matrix was solved to obtain the addition amounts of the steel slag, the waste incineration bottom ash and the coal gangue, that is, P.sub.steel slag, P.sub.waste incineration bottom ash and P.sub.coal gangue are 58.8 wt. %, 32.2 wt. % and 8.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1520 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 7

[0077] The waste incineration fly ash, the waste glass and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with wollastonite (CaSiO.sub.3) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a wollastonite phase was selected, a composition range of the wollastonite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 38.0-48.0 wt. %, 42.0-52.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash, the waste glass and the coal gangue and the composition data of the wollastonite were substituted into a composition calculation matrix:

[00013]$\begin{array}{ccc}[P_{11}& P_{16}& P_{13}]\end{array}\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{11}*0.592+P_{16}*0.871+P_{13}*0.788}=\left[P_{11}*0.592+P_{16}*0.871+P_{13}*0.788\begin{array}{cccc}{m}_{13}& m_{14}& m_{15}& m_{16}\end{array}\right]$

[0078] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.16 represents P.sub.waste glass, P.sub.13 represents P.sub.coal gangue, m.sub.13 represents 0.4800.580, m.sub.14 represents 0.3200.420, m.sub.15 represents 00.100, and m.sub.16 represents 00.100.

[0079] The matrix was solved to obtain the addition amounts of the waste incineration fly ash, the waste glass and the coal gangue, that is, P.sub.waste incineration fly ash, P.sub.waste glass and P.sub.coal gangue are 60.5 wt. %, 32.7 wt. % and 6.8 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1450 C., this temperature was kept for 2 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 8

[0080] The waste incineration fly ash, the waste glass and the coal gangue were recycled to prepare a silicate-based inorganic non-metallic material with wollastonite (CaSiO.sub.3) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a wollastonite phase was selected, a composition range of the wollastonite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 38.0-48.0 wt. %, 42.0-52.0 wt. %, 0-10.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash, the waste glass and the coal gangue and the composition data of the wollastonite were substituted into a composition calculation matrix:

[00014]$\begin{array}{ccc}[P_{11}& P_{16}& P_{13}]\end{array}\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.035& 0.513& 0.218& 0.022\end{array}\right].Math.\frac{1}{P_{11}*0.592+P_{16}*0.871+P_{13}*0.788}=\left[P_{11}*0.592+P_{16}*0.871+P_{13}*0.788\begin{array}{cccc}{m}_{13}& m_{14}& m_{15}& m_{16}\end{array}\right]$

[0081] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.16 represents P.sub.waste glass, P.sub.13 represents P.sub.coal gangue, m.sub.13 represents 0.4800.580, m.sub.14 represents 0.3200.420, m.sub.15 represents 00.100, and m.sub.16 represents 0-0.100.

[0082] The matrix was solved to obtain the addition amounts of the waste incineration fly ash, the waste glass and the coal gangue, that is, P.sub.waste incineration fly ash, P.sub.waste glass and P.sub.coal gangue are 58.0 wt. %, 28.2 wt. % and 13.8 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1410 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 9

[0083] The waste glass, the coal gangue and the industrial magnesium oxide were recycled to prepare a silicate-based inorganic non-metallic material with olivine (Mg.sub.2SiO.sub.4) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2MgO phase diagram containing an olivine phase was selected, a composition range of the olivine was read from the phase diagram, a content of the impurity Al.sub.2O.sub.3 was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 0-10.0 wt. %, 33.0-43.0 wt. %, 0-10.0 wt. % and 47.0-57.0 wt. %, respectively; and the composition data of the waste glass, the coal gangue and the industrial magnesium oxide and the composition data of the olivine were substituted into a composition calculation matrix:

[00015]$\left[\begin{array}{ccc}{P}_{16}& P_{13}& P_{17}\end{array}\right]\left[\begin{array}{ccccc}1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.035& 0.513& 0.218& 0.022\\ 1& 0& 0& 0& 1.\end{array}\right].Math.\frac{1}{P_{16}*0.871+P_{13}*0.788+P_{17}*1.00}=\left[P_{16}*0.871+P_{13}*0.788+P_{17}*1.\begin{array}{cccc}{m}_{17}& m_{18}& m_{19}& m_{20}\end{array}\right]$

[0084] where, P.sub.16 represents P.sub.waste glass, P.sub.13 represents P.sub.coal gangue, P.sub.17 represents P.sub.industrial magnesium oxide, m.sub.17 represents 00.100, m.sub.18 represents 0.3300.430, m.sub.119 represents 00.100, and m.sub.20 represents 0.4700.570.

[0085] The matrix was solved to obtain the addition amounts of the waste glass, the coal gangue and the industrial magnesium oxide, that is, P.sub.waste glass, P.sub.coal gangue and P.sub.industrial magnesium oxide are 30.2 wt. %, 23.9 wt. % and 45.9 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1700 C., this temperature was kept for 1.5 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 10

[0086] The waste glass, the coal gangue and the industrial magnesium oxide were recycled to prepare a silicate-based inorganic non-metallic material with olivine (Mg.sub.2SiO.sub.4) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2MgO phase diagram containing an olivine phase was selected, a composition range of the olivine was read from the phase diagram, a content of the impurity Al.sub.2O.sub.3 was limited, and the content ranges of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 0-10.0 wt. %, 33.0-43.0 wt. %, 0-10.0 wt. % and 47.0-57.0 wt. %, respectively; and the composition data of the waste glass, the coal gangue and the industrial magnesium oxide and the composition data of the olivine were substituted into a composition calculation matrix:

[00016]$\left[\begin{array}{ccc}{P}_{16}& P_{13}& P_{17}\end{array}\right]\left[\begin{array}{ccccc}1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.035& 0.513& 0.218& 0.022\\ 1& 0& 0& 0& 1.\end{array}\right].Math.\frac{1}{P_{16}*0.871+P_{13}*0.788+P_{17}*1.00}=\left[P_{16}*0.871+P_{13}*0.788+P_{17}*1.\begin{array}{cccc}{m}_{17}& m_{18}& m_{19}& m_{20}\end{array}\right]$

[0087] where, P.sub.16 represents P.sub.waste glass, P.sub.13 represents P.sub.coal gangue, P.sub.17 represents P.sub.industrial magnesium oxide, m.sub.17 represents 00.100, m.sub.18 represents 0.3300.430, m.sub.119 represents 00.100, and m.sub.20 represents 0.4700.570.

[0088] The matrix was solved to obtain the addition amounts of the waste glass, the coal gangue and the industrial magnesium oxide, that is, P.sub.waste glass, P.sub.coal gangue and P.sub.industrial magnesium oxide are 40.1 wt. %, 12.7 wt. % and 46.2 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1620 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 11

[0089] The coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide were recycled to prepare a silicate-based inorganic non-metallic material with asbestos (CaMg.sub.3Si.sub.4O.sub.12) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2MgO phase diagram containing an asbestos phase was selected, a composition range of the asbestos was read from the phase diagram, a content of the impurity Al.sub.2O.sub.3 was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 6.0-16.0 wt. %, 51.0-61.0 wt. %, 0-10.0 wt. % and 22.0-32.0 wt. %, respectively; and the composition data of the coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide and the composition data of the asbestos were substituted into a composition calculation matrix:

[00017]$\left[\begin{array}{cccc}{P}_{13}& P_{16}& P_{18}& P_{17}\end{array}\right]\left[\begin{array}{ccccc}1& 0.035& 0.513& 0.218& 0.022\\ 1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.195& 0.354& 0.187& 0.023\\ 1& 0& 0& 0& 1.\end{array}\right].Math.\frac{1}{P_{13}*0.788+P_{16}*0.871+P_{18}*0.759+P_{17}*1.00}=\left[P_{13}*0.788+P_{16}*0.871+P_{18}*0.759+P_{17}*1.\begin{array}{cccc}{m}_{21}& m_{22}& m_{23}& m_{24}\end{array}\right]$

[0090] where, P.sub.13 represents P.sub.coal gangue, P.sub.16 represents P.sub.waste glass, P.sub.18 represents P.sub.municipal sludge, P.sub.17 represents P.sub.industrial magnesium oxide, m.sub.21 represents 0.060-0.160, m.sub.22 represents 0.510-0.610, m.sub.23 represents 0-0.100, and m.sub.24 represents 0.220-0.320.

[0091] The matrix was solved to obtain the addition amounts of the coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide, that is, P.sub.coal gangue, P.sub.waste glass, P.sub.municipal sludge and P.sub.industrial magnesium oxide are 5.9 wt. %, 48.9 wt. %, 24.0 wt. % and 21.2 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1500 C., this temperature was kept for 2.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 12

[0092] The coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide were recycled to prepare a silicate-based inorganic non-metallic material with asbestos (CaMg.sub.3Si.sub.4O.sub.12) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2MgO phase diagram containing an asbestos phase was selected, a composition range of the asbestos was read from the phase diagram, a content of the impurity Al.sub.2O.sub.3 was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 6.0-16.0 wt. %, 51.0-61.0 wt. %, 0-10.0 wt. % and 22.0-32.0 wt. %, respectively; and the composition data of the coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide and the composition data of the asbestos were substituted into a composition calculation matrix:

[00018]$\left[P_{13}{P}_{16}{P}_{18}{P}_{17}\right]\left[\begin{array}{ccccc}1& 0.035& 0.513& 0.218& 0.022\\ 1& 0.095& 0.739& 0.006& 0.031\\ 1& 0.195& 0.354& 0.187& 0.023\\ 1& 0& 0& 0& 1.\end{array}\right].\frac{1}{P_{13}*0.788+P_{16}*0.871+P_{18}*0.759+P_{17}*1.00}=\left[P_{13}*0.788+P_{16}*0.871+P_{18}*0.759+P_{17}*1.00m_{21}{m}_{22}{m}_{23}{m}_{24}\right]$

[0093] where, P.sub.13 represents P.sub.coal gangue, P.sub.16 represents P.sub.waste glass, P.sub.18 represents P.sub.municipal sludge, P.sub.17 represents P.sub.industrial magnesium oxide, m.sub.21 represents 0.0600.160, m.sub.22 represents 0.5100.610, m.sub.23 represents 00.100, and m.sub.24 represents 0.2200.320.

[0094] The matrix was solved to obtain the addition amounts of the coal gangue, the waste glass, the municipal sludge and the industrial magnesium oxide, that is, P.sub.coal gangue, P.sub.waste glass, P.sub.municipal sludge and P.sub.industrial magnesium oxide are 3.0 wt. %, 53.0 wt. %, 22.8 wt. % and 21.2 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1470 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the carbon in the coal gangue reduces the valuable metals in the slag into an alloy, and the slag is utilized for the silicate-based inorganic non-metallic material in a high-value mode.

Example 13

[0095] The desulfurized gypsum and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with tricalcium aluminate (Ca.sub.3Al.sub.2O.sub.6) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a tricalcium aluminate phase was selected, a composition range of the tricalcium aluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 52.0-62.0 wt. %, 0-10.0 wt. %, 28.0-38.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum and the aluminum ash slag and the composition data of the tricalcium aluminate were substituted into a composition calculation matrix:

[00019]$\left[P_{14}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 1.013& 0.019\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{14}*0.749+P_{19}*0.911}=\left[P_{14}*0.592+P_{19}*0.911m_{25}{m}_{26}{m}_{27}{m}_{28}\right]$

[0096] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.19 represents P.sub.aluminum ash slag, m.sub.25 represents 0.5200.620, m.sub.26 represents 00.100, m.sub.27 represents 0.2800.380, and m.sub.28 represents 00.100.

[0097] The matrix was solved to obtain the addition amounts of the desulfurized gypsum and the aluminum ash slag, that is, P.sub.desulfurized gypsum and P.sub.aluminum ash slag are 64.0 wt. % and 36.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1700 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 14

[0098] The desulfurized gypsum and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with tricalcium aluminate (Ca.sub.3Al.sub.2O.sub.6) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a tricalcium aluminate phase was selected, a composition range of the tricalcium aluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 52.0-62.0 wt. %, 0-10.0 wt. %, 28.0-38.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum and the aluminum ash slag and the composition data of the tricalcium aluminate were substituted into a composition calculation matrix:

[00020]$\left[P_{14}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 1.013& 0.019\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{14}*0.749+P_{19}*0.911}=\left[P_{14}*0.592+P_{19}*0.911m_{25}{m}_{26}{m}_{27}{m}_{28}\right]]$

[0099] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.19 represents P.sub.aluminum ash slag, m.sub.25 represents 0.520-0.620, m.sub.26 represents 0-0.100, m.sub.27 represents 0.280-0.380, and m.sub.28 represents 0-0.100.

[0100] The matrix was solved to obtain the addition amounts of the desulfurized gypsum and the aluminum ash slag, that is, P.sub.desulfurized gypsum and P.sub.aluminum ash slag are 66.0 wt. % and 34.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1620 C., this temperature was kept for 2.5 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 15

[0101] The waste incineration fly ash and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with dodecacalcium heptaluminate (Ca.sub.12Al.sub.14O.sub.33) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a dodecacalcium heptaluminate phase was selected, a composition range of the dodecacalcium heptaluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 38.0-48.0 wt. %, 0-10.0 wt. %, 42.0-52.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash and the aluminum ash slag and the composition data of the dodecacalcium heptaluminate phase were substituted into a composition calculation matrix:

[00021]$\left[P_{11}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{11}*0.592+P_{19}*0.911}=\left[P_{11}*0.592+P_{19}*0.911m_{29}{m}_{30}{m}_{31}{m}_{32}\right]$

[0102] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.29 represents 0.3800.480, m.sub.30 represents 00.100, n.sub.31 represents 0.4200.520, and m.sub.32 represents 00.100.

[0103] The matrix was solved to obtain the addition amounts of the waste incineration fly ash and the aluminum ash slag, that is, P.sub.waste incineration fly ash and P.sub.aluminum ash slag are 62.0 wt. % and 38.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1500 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode; the obtained alloy is an iron-zinc alloy, and the iron content and the zinc content are 86.0 wt. % and 14.0 wt. %, respectively; FIG. 4 is an XRD pattern of the obtained aluminate-based inorganic non-metallic material with a main crystal phase of dodecacalcium heptaluminate (Ca.sub.12Al.sub.14O.sub.33) and a main crystal phase content of 92.0 wt. %.

Example 16

[0104] The waste incineration fly ash and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with dodecacalcium heptaluminate (Ca.sub.12Al.sub.14O.sub.33) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a dodecacalcium heptaluminate phase was selected, a composition range of the dodecacalcium heptaluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 38.0-48.0 wt. %, 0-10.0 wt. %, 42.0-52.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash and the aluminum ash slag and the composition data of the dodecacalcium heptaluminate phase were substituted into a composition calculation matrix:

[00022]$\left[P_{11}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{11}*0.592+P_{19}*0.911}=\left[P_{11}*0.592+P_{19}*0.911m_{29}{m}_{30}{m}_{31}{m}_{32}\right]$

[0105] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.29 represents 0.3800.480, m.sub.30 represents 00.100, n.sub.31 represents 0.4200.520, and m.sub.32 represents 00.100.

[0106] The matrix was solved to obtain the addition amounts of the waste incineration fly ash and the aluminum ash slag, that is, P.sub.waste incineration fly ash and P.sub.aluminum ash slag are 61.0 wt. % and 39.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1460 C., this temperature was kept for 2.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 17

[0107] The phosphogypsum and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with calcium dialuminate (CaAl.sub.4O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a calcium dialuminate phase was selected, a composition range of the calcium dialuminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 12.0-22.0 wt. %, 0-10.0 wt. %, 68.0-78.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the phosphogypsum and the aluminum ash slag and the composition data of the calcium dialuminate were substituted into a composition calculation matrix:

[00023]$\left[P_{20}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.378& 0.083& 0.009& 0.001\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{20}*0.471+P_{19}*0.911}=\left[P_{20}*0.471+P_{19}*0.911m_{33}{m}_{34}{m}_{35}{m}_{36}\right]$

[0108] where, P.sub.20 represents P.sub.phosphogypsum, P.sub.19 represents P.sub.aluminum ash slag, m.sub.33 represents 0.1200.220, m.sub.34 represents 00.100, m.sub.35 represents 0.6800.780, and m.sub.36 represents 00.100.

[0109] The matrix was solved to obtain the addition amounts of the phosphogypsum and the aluminum ash slag, that is, P.sub.phosphogypsum and P.sub.aluminum ash slag are 31.0 wt. % and 69.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1700 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode; the obtained alloy is an iron-zinc-copper alloy, and the iron content, the zinc content and the copper content are 84.0 wt. %, 10.0 wt. % and 6.0 wt. %, respectively; FIG. 5 is an XRD pattern of the obtained aluminate-based inorganic non-metallic material with a main crystal phase of calcium dialuminate (CaAl.sub.4O.sub.7) and a main crystal phase content of 85.0 wt. %.

Example 18

[0110] The phosphogypsum and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with calcium dialuminate (CaAl.sub.4O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a calcium dialuminate phase was selected, a composition range of the calcium dialuminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 12.0-22.0 wt. %, 0-10.0 wt. %, 68.0-78.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the phosphogypsum and the aluminum ash slag and the composition data of the calcium dialuminate were substituted into a composition calculation matrix:

[00024]$\left[P_{20}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.378& 0.083& 0.009& 0.001\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{20}*0.471+P_{19}*0.911}=\left[P_{20}*0.471+P_{19}*0.911m_{33}{m}_{34}{m}_{35}{m}_{36}\right]$

[0111] where, P.sub.20 represents P.sub.phosphogypsum, P.sub.19 represents P.sub.aluminum ash slag, m.sub.33 represents 0.1200.220, m.sub.34 represents 00.100, m.sub.35 represents 0.6800.780, and m.sub.36 represents 00.100.

[0112] The matrix was solved to obtain the addition amounts of the phosphogypsum and the aluminum ash slag, that is, P.sub.phosphogypsum and P.sub.aluminum ash slag are 33.0 wt. % and 67.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1620 C., this temperature was kept for 2.5 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 19

[0113] The waste incineration fly ash and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with calcium aluminate (CaAl.sub.2O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a calcium aluminate phase was selected, a composition range of the calcium aluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 25.0-35.0 wt. %, 0-10.0 wt. %, 55.0-65.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash and the aluminum ash slag and the composition data of the calcium aluminate were substituted into a composition calculation matrix:

[00025]$\left[P_{11}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{11}*0.592+P_{19}*0.911}=\left[P_{11}*0.592+P_{19}*0.911m_{37}{m}_{38}{m}_{39}{m}_{40}\right]$

[0114] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.37 represents 0.2500.350, m.sub.38 represents 00.100, m.sub.39 represents 0.5500.650, and m.sub.40 represents 00.100.

[0115] The matrix was solved to obtain the addition amounts of the waste incineration fly ash and the aluminum ash slag, that is, P.sub.waste incineration fly ash and P.sub.aluminum ash slag are 45.0 wt. % and 55.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1600 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 20

[0116] The waste incineration fly ash and the aluminum ash slag were recycled to prepare an aluminate-based inorganic non-metallic material with calcium aluminate (CaAl.sub.2O.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a calcium aluminate phase was selected, a composition range of the calcium aluminate was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 25.0-35.0 wt. %, 0-10.0 wt. %, 55.0-65.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the waste incineration fly ash and the aluminum ash slag and the composition data of the calcium aluminate were substituted into a composition calculation matrix:

[00026]$\left[P_{11}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.463& 0.084& 0.018& 0.027\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right]\frac{1}{P_{11}*0.592+P_{19}*0.911}=\left[P_{11}*0.592+P_{19}*0.911m_{37}{m}_{38}{m}_{39}{m}_{40}\right]$

[0117] where, P.sub.11 represents P.sub.waste incineration fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.37 represents 0.250-0.350, m.sub.38 represents 0-0.100, m.sub.39 represents 0.550-0.650, and m.sub.40 represents 0-0.100.

[0118] The matrix was solved to obtain the addition amounts of the waste incineration fly ash and the aluminum ash slag, that is, P.sub.waste incineration fly ash and P.sub.aluminum ash slag are 46.0 wt. % and 54.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1520 C., this temperature was kept for 2.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminate-based inorganic non-metallic material in a high-value mode.

Example 21

[0119] The desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag were recycled to prepare an aluminosilicate-based inorganic non-metallic material with gehlenite (Ca.sub.2Al.sub.2SiO.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a gehlenite phase was selected, a composition range of the gehlenite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 34.0-44.0 wt. %, 15.0-25.0 wt. %, 30.0-40.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag and the composition data of the gehlenite were substituted into a composition calculation matrix:

[00027]$\left[P_{14}{P}_{20}{P}_{21}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 0.013& 0.019\\ 1& 0.502& 0.416& 0.01& 0.02\\ 1& 0.497& 0.278& 0.034& 0.065\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{14}*0.749+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911}=\left[P_{14}*0.749+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911m_{41}{m}_{42}{m}_{43}{m}_{44}\right]$

[0120] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.20 represents P.sub.magnesium slag, P.sub.21 represents P.sub.electric furnace slag, P.sub.19 represents P.sub.aluminum ash slag, m.sub.41 represents 0.3400.440, m.sub.42 represents 0.1500.250, m.sub.43 represents 0.3000.400, and m.sub.44 represents 00.100.

[0121] The matrix was solved to obtain the addition amounts of the desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag, that is, P.sub.desulfurized gypsum, P.sub.magnesium slag, P.sub.electric furnace slag and P.sub.aluminum ash slag are 14.7 wt. %, 23.9 wt. %, 22.6 wt. % and 38.8 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1400 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminosilicate-based inorganic non-metallic material in a high-value mode; the obtained alloy is iron-chromium-zinc alloy, and the iron content, the chromium content and the zinc content are 82.0 wt. %, 11.0 wt. % and 7.0 wt. %, respectively; FIG. 6 is an XRD pattern of the obtained aluminosilicate-based inorganic non-metallic material with a main crystal phase of gehlenite (Ca.sub.2Al.sub.2SiO.sub.7) and a main crystal phase content of 89.0 wt. %.

Example 22

[0122] The desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag were recycled to prepare an aluminosilicate-based inorganic non-metallic material with gehlenite (Ca.sub.2Al.sub.2SiO.sub.7) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a gehlenite phase was selected, a composition range of the gehlenite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 34.0-44.0 wt. %, 15.0-25.0 wt. %, 30.0-40.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag and the composition data of the gehlenite were substituted into a composition calculation matrix:

[00028]$\left[P_{14}{P}_{20}{P}_{21}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.674& 0.043& 0.013& 0.019\\ 1& 0.502& 0.416& 0.01& 0.02\\ 1& 0.497& 0.278& 0.034& 0.065\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{14}*0.749+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911}=\left[P_{14}0.749+P_{20}*0.948+P_{20}*0.874+P_{19}*0.911m_{41}{m}_{42}{m}_{43}{m}_{44}\right]$

[0123] where, P.sub.14 represents P.sub.desulfurized gypsum, P.sub.20 represents P.sub.magnesium slag, P.sub.21 represents P.sub.electric furnace slag, P.sub.19 represents P.sub.aluminum ash slag, m.sub.41 represents 0.3400.440, m.sub.42 represents 0.1500.250, m.sub.43 represents 0.3000.400, and m.sub.44 represents 00.100.

[0124] The matrix was solved to obtain the addition amounts of the desulfurized gypsum, the magnesium slag, the electric furnace slag and the aluminum ash slag, that is, P.sub.desulfurized gypsum, P.sub.magnesium slag, P.sub.electric furnace slag and P.sub.aluminum ash slag are 21.4 wt. %, 36.5 wt. %, 2.6 wt. % and 39.5 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1300 C., this temperature was kept for 2.5 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminosilicate-based inorganic non-metallic material in a high-value mode.

Example 23

[0125] The iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag were recycled to prepare an aluminosilicate-based inorganic non-metallic material with anorthite (CaAl.sub.2Si.sub.2O.sub.8) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing an anorthite phase was selected, a composition range of the anorthite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 13.0-23.0 wt. %, 36.0-46.0 wt. %, 30.0-40.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag and the composition data of the anorthite were substituted into a composition calculation matrix:

[00029]$\left[P_{22}{P}_{20}{P}_{21}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.032& 0.633& 0.15& 0.043\\ 1& 0.502& 0.416& 0.01& 0.02\\ 1& 0.497& 0.278& 0.034& 0.065\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{22}*0.858+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911}=\left[P_{22}*0.858+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911m_{45}{m}_{46}{m}_{47}{m}_{48}\right]$

[0126] where, P.sub.22 represents P.sub.iron tailings, P.sub.20 represents P.sub.magnesium slag, P.sub.21 represents P.sub.electric furnace slag, P.sub.19 represents P.sub.aluminum ash slag, m.sub.45 represents 0.1300.230, m.sub.46 represents 0.3600.460, m.sub.47 represents 0.3000.400, and m.sub.48 represents 00.100.

[0127] The matrix was solved to obtain the addition amounts of the iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag, that is, P.sub.iron tailings, P.sub.magnesium slag, P.sub.electric furnace slag and P.sub.aluminum ash slag are 38.5 wt. %, 20.3 wt. %, 8.4 wt. % and 32.8 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1450 C., this temperature was kept for 2.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminosilicate-based inorganic non-metallic material in a high-value mode.

Example 24

[0128] The iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag were recycled to prepare an aluminosilicate-based inorganic non-metallic material with anorthite (CaAl.sub.2Si.sub.2O.sub.8) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing an anorthite phase was selected, a composition range of the anorthite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 13.0-23.0 wt. %, 36.0-46.0 wt. %, 30.0-40.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag and the composition data of the anorthite were substituted into a composition calculation matrix:

[00030]$\left[P_{22}{P}_{20}{P}_{21}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.032& 0.633& 0.15& 0.043\\ 1& 0.502& 0.416& 0.01& 0.02\\ 1& 0.497& 0.278& 0.034& 0.065\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{22}*0.858+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911}=\left[P_{22}*0.858+P_{20}*0.948+P_{21}*0.874+P_{19}*0.911m_{45}{m}_{46}{m}_{47}{m}_{48}\right]$

[0129] where, P.sub.22 represents P.sub.iron tailings, P.sub.20 represents P.sub.magnesium slag, P.sub.21 represents P.sub.electric furnace slag, P.sub.19 represents P.sub.aluminum ash slag, m.sub.45 represents 0.1300.230, m.sub.46 represents 0.3600.460, m.sub.47 represents 0.3000.400, and m.sub.48 represents 00.100.

[0130] The matrix was solved to obtain the addition amounts of the iron tailings, the magnesium slag, the electric furnace slag and the aluminum ash slag, that is, P.sub.iron tailings, P.sub.magnesium slag, P.sub.electric furnace slag and P.sub.aluminum ash slag are 42.1 wt. %, 1.4 wt. %, 26.9 wt. % and 29.6 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1410 C., this temperature was kept for 1.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminosilicate-based inorganic non-metallic material in a high-value mode.

Example 25

[0131] The iron tailings, the fly ash and the aluminum ash slag were recycled to prepare an aluminosilicate-based inorganic non-metallic material with mullite (Al.sub.6Si.sub.2O.sub.13) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOSiO.sub.2Al.sub.2O.sub.3 phase diagram containing a mullite phase was selected, a composition range of the mullite was read from the phase diagram, a content of the impurity MgO was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 0-10.0 wt. %, 18.0-28.0 wt. %, 62.0-72.0 wt. % and 0-10.0 wt. %, respectively; and the composition data of the iron tailings, the fly ash and the aluminum ash slag and the composition data of the mullite were substituted into a composition calculation matrix:

[00031]$\left[P_{22}{P}_{23}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.032& 0.633& 0.15& 0.043\\ 1& 0.101& 0.54& 0.184& 0.011\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{22}*0.858+P_{23}*0.836+P_{19}*0.911}=\left[P_{22}*0.858+P_{23}*0.836+P_{19}*0.911m_{49}{m}_{50}{m}_{51}{m}_{52}\right]$

[0132] where, P.sub.22 represents P.sub.iron tailings, P.sub.23 represents P.sub.fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.49 represents 00.100, m.sub.50 represents 0.1800.280, m.sub.51 represents 0.6200.720, and m.sub.52 represents 00.100.

[0133] The matrix was solved to obtain the addition amounts of the iron tailings, the fly ash and the aluminum ash slag, that is, P.sub.iron tailings, P.sub.fly ash and P.sub.aluminum ash slag are 21.8 wt. %, 8.2 wt. % and 70.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1800 C., this temperature was kept for 1.5 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the aluminosilicate-based inorganic non-metallic material in a high-value mode.

Example 26

[0134] The aluminum ash slag and the industrial magnesium oxide were recycled to prepare a magnesioaluminate-based inorganic non-metallic material with magnesioaluminate spinel (MgAl.sub.2O.sub.4) as a main mineral phase. The multi-source solid waste composition data (see Table 1) were collected; a CaOAl.sub.2O.sub.3MgO phase diagram containing a magnesioaluminate spinel phase was selected, a composition range of the magnesioaluminate spinel was read from the phase diagram, a content of the impurity SiO.sub.2 was limited, and the contents of CaO, SiO.sub.2, Al.sub.2O.sub.3 and MgO were determined as 0-10.0 wt. %, 0-10.0 wt. %, 62.0-72.0 wt. % and 18.0-28.0 wt. %, respectively; and the composition data of the aluminum ash slag and the industrial magnesium oxide and the composition data of the magnesioaluminate spinel were substituted into a composition calculation matrix:

[00032]$\left[P_{22}{P}_{23}{P}_{19}\right]\left[\begin{array}{ccccc}1& 0.032& 0.633& 0.15& 0.043\\ 1& 0.101& 0.54& 0.184& 0.011\\ 1& 0.015& 0.046& 0.793& 0.057\end{array}\right].\frac{1}{P_{22}*0.858+P_{23}*0.836+P_{19}*0.911}=\left[P_{22}*0.858+P_{23}*0.836+P_{19}*0.911m_{49}{m}_{50}{m}_{51}{m}_{52}\right]$

[0135] where, P.sub.22 represents P.sub.iron tailings, P.sub.23 represents P.sub.fly ash, P.sub.19 represents P.sub.aluminum ash slag, m.sub.49 represents 00.100, m.sub.50 represents 0.1800.280, m.sub.51 represents 0.6200.720, and m.sub.52 represents 00.100.

[0136] The matrix was solved to obtain the addition amounts of the aluminum ash slag and the industrial magnesium oxide, that is, P.sub.aluminum ash slag and P.sub.industrial magnesium oxide are 79.0 wt. % and 21.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1800 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into an alloy, and the slag is utilized for the magnesioaluminate-based inorganic non-metallic material in a high-value mode.

Comparative Example 1

[0137] The aluminum ash slag was used for reducing the valuable metals in the waste incineration fly ash into an alloy. The contents of valuable metals iron and zinc in the aluminum ash slag are 3.9 wt. % and 1.0 wt. %, respectively, and the contents of valuable metals iron and zinc in the waste incineration fly ash are 1.3 wt. % and 0.6 wt. %, respectively. The reducing agent in the aluminum ash slag includes aluminum nitride, aluminum carbide and metallic aluminum, wherein the aluminum carbide and the metallic aluminum are converted into the aluminum nitride due to low content, and the total content of the converted aluminum nitride is 30.0 wt. %. According to the reduction reaction equation (formula 3) described in the summary of the present invention, the addition amounts of the aluminum ash slag and the waste incineration fly ash were determined as 5.0 wt. % and 95.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1500 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into iron-zinc alloy, and the reduction rates of iron and zinc are 91% and 95% respectively; the slag is in an amorphous state because a composition of the slag is different from that of the existing mineral phase with an XRD pattern shown in FIG. 7, consequently, the slag is difficult to be recycled.

Comparative Example 2

[0138] The aluminum ash slag was used for reducing the valuable metals in the phosphogypsum into an alloy. The contents of valuable metals iron, zinc and copper in the aluminum ash slag are 3.9 wt. %, 1.0 wt. % and 0, respectively, and the contents of valuable metals iron, zinc and copper in the phosphogypsum are 1.2 wt. %, 0.6 wt. % and 0.5 wt. %, respectively. The reducing agent in the aluminum ash slag includes aluminum nitride, aluminum carbide and metallic aluminum, wherein the aluminum carbide and the metallic aluminum are converted into the aluminum nitride due to low content, and the total content of the converted aluminum nitride is 30.0 wt. %. According to the reduction reaction equation (formula 3) described in the summary of the present invention, the addition amounts of the aluminum ash slag and the phosphogypsum were determined as 7.0 wt. % and 93.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1550 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into iron-zinc-copper alloy, and the reduction rates of iron, zinc and copper are 90%, 94% and 92%, respectively; the slag is in an amorphous state because a composition of the slag is different from that of the existing mineral phase, consequently, the slag is difficult to be recycled.

Comparative Example 3

[0139] The aluminum ash slag was used for reducing the valuable metals in the electric furnace slag into an alloy. The contents of valuable metals iron, chromium and zinc in the aluminum ash slag are 3.9 wt. %, 1.0 wt. % and 0, respectively, and the contents of valuable metals iron, chromium and zinc in the electric furnace slag are 0.7 wt. %, 4.5 wt. % and 0.3 wt. %, respectively. The reducing agent in the aluminum ash slag includes aluminum nitride, aluminum carbide and metallic aluminum, wherein the aluminum carbide and the metallic aluminum are converted into the aluminum nitride due to low content, and the total content of the converted aluminum nitride is 30.0 wt. %. According to the reduction reaction equation (formula 3) described in the summary of the present invention, the addition amounts of the aluminum ash slag and the electric furnace slag were determined as 10.0 wt. % and 90.0 wt. %, respectively; the raw materials were uniformly mixed to obtain a mixture; the mixture was heated to 1600 C., this temperature was kept for 3.0 h, and the mixture was molten into slag; wherein the aluminum nitride, aluminum carbide, and metallic aluminum in the aluminum ash slag reduce the valuable metals in the slag into iron-chromium-zinc alloy, and the reduction rates of iron, chromium and zinc are 93%, 90% and 95% respectively; the slag is in an amorphous state because a composition of the slag is different from that of the existing mineral phase, consequently, the slag is difficult to be recycled.

[0140] The foregoing descriptions are merely specific implementations of the present invention, but are not intended to limit the protection scope of the present invention. Any equivalent modification or replacement readily figured out by those skilled in the art within a technical scope disclosed in the present invention should fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope determined by the claims.