Potassium fluotitanate manufacture and device background

Abstract

The invention provides a Potassium Fluotitanate (K.sub.2TIF6) manufacture process. The Potassium Fluotitanate (K.sub.2TIF6) manufacture process includes steps: A. providing titanium ferrum powder to a reaction furnace and adding HF and peroxide solution to react with the titanium ferrum powder sufficiently to manufacture H.sub.2TiF.sub.6, B. filtrating the sufficiently mixed solution of step A and adding it to another reaction furnace, and then after the H.sub.2TiF.sub.6 cools off, adding Potassium Chloride (KCl) solution to react with the mixed solution to manufacture Potassium Fluotitanate (K.sub.2TiF.sub.6); C. adding K.sub.2CO.sub.3 solution to the remaining solution of step B and react with the remaining solution and controlling the pH value, the element Fe is recycled by a form of Fe(OH).sub.3 flocculent precipitate and the Potassium Chloride (KCl) and KF solution are recycled. This invention has these advantages: adding peroxide to the titanium ferrum powder can oxidize Fe.sup.2+ into Fe.sup.3+ and adding K.sub.2CO.sub.3 solution to clean element Fe out by a form of Fe(OH).sub.3 flocculent precipitate, and the hydrofluoric acid (HF) can be recycled which can realize the HF zero polluting discharge.

Claims

1. A potassium fluotitanate (K.sub.2TiF.sub.6) manufacture process comprises the following steps: A. providing titanium ferrum powder to a first reaction furnace and adding HF and hydrogen peroxide solution to concurrently react with the titanium ferrum powder sufficiently to manufacture H.sub.2TiF.sub.6 and so as to oxidize Fe.sup.2+ into Fe.sup.3+ to inhibit production of FeTiF.sub.6 according to a reaction
TiO.sub.2(FeO,Fe.sub.2O.sub.3)+HF+H.sub.2O+H.sub.2O.sub.2.fwdarw.H.sub.2TiF.sub.6+H.sub.3FeF.sub.6+H.sub.2O+O.sub.2 to form a mixed product solution, B. filtrating the mixed product solution of step A and adding the resulting filtrated product solution to a second reaction furnace and allowing the filtrated product solution to cool and then, after the H.sub.2TiF.sub.6 cools off, adding potassium chloride (KCl) solution to react with the filtrated product solution to manufacture potassium fluotitanate (K.sub.2TiF.sub.6) according to a reaction H.sub.2TiF.sub.6+2KCl.fwdarw.K.sub.2TiF.sub.6+2HCl, wherein the potassium fluotitanate (K.sub.2TiF.sub.6) is removed by centrifuge dripping filtrating; and C. adding K.sub.2CO.sub.3 solution to a H.sub.3FeF.sub.6+H.sub.2O+HCl solution remained after the centrifuge dripping filtrating of step B to a third reaction furnace and react with the remaining solution and controlling the pH value according to a reaction
H.sub.3FeF.sub.6+K.sub.2CO.sub.3+HCl+H.sub.2O.fwdarw.Fe(OH).sub.3+KCl+KF+H.sub.2O, wherein the element Fe is removed by a form of Fe(OH).sub.3 flocculent precipitate and the potassium chloride (KCl) is recycled.

2. The potassium fluotitanate (K.sub.2TiF.sub.6) manufacture process according to claim 1, wherein during the step C, the pH value is controlled in a range of 23, 34, 45, or 57.

3. A potassium fluotitanate (K.sub.2TiF.sub.6) manufacture process comprises the following steps: A. providing titanium ferrum powder to a first reaction furnace and adding HF and peracetic acid solution to concurrently react with the titanium ferrum powder sufficiently to manufacture H.sub.2TiF.sub.6 and so as to oxidize Fe.sup.2+ into Fe.sup.3+ so as to inhibit production of FeTiF.sub.6 according to a reaction
TiO.sub.2(FeO,Fe.sub.2O.sub.3)+HF+H.sub.2O+CH.sub.3CO.sub.2OH.fwdarw.H.sub.2TiF.sub.6+H.sub.3FeF.sub.6+CH.sub.3COOH+H.sub.2O+O.sub.2 to form a mixed product solution, B. filtrating the mixed product solution of step A and adding the resulting filtrated product solution to a second reaction furnace and allowing the filtrated product solution to cool and then, after the H.sub.2TiF.sub.6 cools off, adding potassium chloride (KCl) solution to react with the filtrated product solution to manufacture potassium fluotitanate (K.sub.2TiF.sub.6) according to a reaction H.sub.2TiF.sub.6+2KCl.fwdarw.K.sub.2TiF.sub.6+2HCl, wherein the potassium fluotitanate (K.sub.2TiF.sub.6) is removed by centrifuge dripping filtrating; and C. adding K.sub.2CO.sub.3 solution to a remaining H.sub.3FeF.sub.6+H.sub.2O+HCl solution remained after the centrifuge dripping filtrating of step B to a third reaction furnace and react with the remaining solution and controlling the pH value according to a reaction
H.sub.3FeF.sub.6+K.sub.2CO.sub.3+HCl+H.sub.2O.fwdarw.Fe(OH).sub.3+KCl+KF+H.sub.2O, wherein the element Fe is removed by a form of Fe(OH).sub.3 flocculent precipitate and the potassium chloride (KCl) is recycled.

4. The potassium fluotitanate (K.sub.2TiF.sub.6) manufacture process of claim 3, wherein during the step C, the pH value is controlled in a range of 2-3, 3-4, 4-5, or 5-7.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:

(2) FIG. 1 is a cross-sectional schematic view of a potassium fluotitanate manufacturing reaction furnace according to an embodiment of present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Example 1

(3) As shown in FIG. 1, a potassium fluotitanate (K.sub.2TiF.sub.6) manufacturing reaction furnace is provided. The potassium fluotitanate (K.sub.2TiF.sub.6) manufacturing reaction furnace includes a reaction furnace main body 10, a sealing cover sealed the reaction furnace main body, an output 15, and a stirring unit 12 disposed in the reaction furnace main body. The sealing cover includes several hole accesses 11 to add hydrofluoric acid (HF), titanium ferrum powder accesses 13, and HF steam recycling condensation device including several bent condenser tubes 14. An air blower 143 is disposed at the bent part of the condenser tube separately, and an HF recycling groove 142 is disposed at the end of the bent part. The condenser tube further includes a condensation water device 143 connecting to the adjacent condenser tube. An HF recycle device 144 is disposed at the end of the condenser tube to recycle HF which can realize the HF zero polluting discharge. A graphite layer is disposed at the inside of the reaction furnace main body. The material of the stirring unit is polyvinyl chloride (PVC) or polypropylene (PP) to sufficiently mix the titanium ferrum powder with a low cost.

(4) A Potassium Fluotitanate (K.sub.2TiF.sub.6) manufacturing process includes following steps:

(5) A. providing titanium ferrum powder to a reaction furnace and adding HF and hydrogen peroxide to react with the titanium ferrum powder sufficiently to manufacture H.sub.2TiF.sub.6:

(6) ##STR00001##

(7) According to this embodiment, the quantity of the titanium ferrum powder is one ton. The concentration of the HF is in a range of 520% and the quantity is about 2.5 tons. The concentration of the hydrogen peroxide is in a range of 530%, what is preferred is 1020% and quantity is about 3 tons. Adding 1020% hydrogen peroxide to the HF can oxidize Fe.sup.2+ into Fe.sup.3+ of the titanium ferrum powder in order to avoid generating FeTiF.sub.6. Thus, the element Fe can be cleaned out by a form of Fe(OH).sub.3 flocculent precipitate in the following steps.

(8) B. filtrating the sufficiently mixed solution of step A and adding it to another reaction furnace, and then after the H.sub.2TiF.sub.6 cools off, adding potassium chloride (KCl) solution with a concentration 3035% to react with the mixed solution to manufacture potassium fluotitanate (K.sub.2TiF.sub.6):
H.sub.2TiF.sub.6+KCl.fwdarw.K.sub.2TiF.sub.6+HCl

(9) According to this embodiment, the quantity of the potassium chloride (KCl) is three tons.

(10) The potassium fluotitanate (K.sub.2TiF.sub.6) is recycled by centrifuge dripping filtrating and the remaining solution is transmitted to a third reaction furnace.

(11) C. adding K.sub.2CO.sub.3 solution with a concentration 3035% to the remaining solution of step B and react with the remaining solution.
H.sub.3FeF.sub.6+K.sub.2CO.sub.3+HCl+H.sub.2O.fwdarw.Fe(OH).sub.3+KCl+KF+H.sub.2O,

(12) The quantity of the K.sub.2CO.sub.3 solution is two tons and its pH value is in a range of 34. The element Fe is recycled by a form of Fe(OH).sub.3 flocculent precipitate and the potassium chloride (KCl) and KF solution are recycled to be reused.

Example 2

(13) A potassium fluotitanate (K.sub.2TiF.sub.6) manufacturing reaction furnace is provided. The potassium fluotitanate (K.sub.2TiF.sub.6) manufacturing reaction furnace includes a reaction furnace main body 10, a sealing cover sealed the reaction furnace main body, an output 15, and a stirring unit 12 disposed in the reaction furnace main body. The sealing cover includes several hole accesses 11 to add hydrofluoric acid (HF), titanium ferrum powder accesses 13, and HF steam recycling condensation device including several bent condenser tubes 14. An air blower 143 is disposed at the bent part of the condenser tube separately, and an HF recycling groove 142 is disposed at the end of the bent part. The condenser tube further includes a condensation water device 143 connecting to the adjacent condenser tube. An HF recycle device 144 is disposed at the end of the condenser tube to recycle HF which can realize the HF zero polluting discharge. A graphite layer is disposed at the inside of the reaction furnace main body. The material of the stirring unit is polyvinyl chloride (PVC) or polypropylene (PP) to sufficiently mix the titanium ferrum powder with a low cost.

(14) A potassium fluotitanate (K.sub.2TiF.sub.6) manufacturing process includes following steps:

(15) A. providing titanium ferrum powder to a reaction furnace and adding HF and hydrogen peroxide to react with the titanium ferrum powder sufficiently to manufacture H.sub.2TiF.sub.6:

(16) ##STR00002##

(17) According to this embodiment, the quantity of the titanium ferrum powder is one ton. The concentration of the HF is in a range of 520% and the quantity is about 2.5 tons. The concentration of the peracetic acid is in a range of 530%, what is preferred is 1020% and quantity is about 3 tons. Adding 1020% hydrogen peroxide to the HF can oxidize Fe.sup.2+ into Fe.sup.3+ of the titanium ferrum powder in order to avoid generating FeTiF.sub.6. Thus, the element Fe can be cleaned out by a form of Fe(OH).sub.3 flocculent precipitate in the following steps.

(18) B. filtrating the sufficiently mixed solution of step A and adding it to another reaction furnace, and then after the H.sub.2TiF.sub.6 cools off, adding potassium chloride (KCl) solution with a concentration 1520% to react with the mixed solution to manufacture potassium fluotitanate (K.sub.2TiF.sub.6):
H.sub.2TiF.sub.6+KCl.fwdarw.K.sub.2TiF.sub.6+HCl

(19) According to this embodiment, the quantity of the potassium chloride (KCl) is three tons.

(20) The potassium fluotitanate (K.sub.2TiF.sub.6) is recycled by centrifuge dripping filtrating and the remaining solution is transmitted to a third reaction furnace.

(21) C. adding K.sub.2CO.sub.3 solution with a concentration 1520% to the remaining solution of step B and react with the remaining solution.
H.sub.3FeF.sub.6+K.sub.2CO.sub.3+HCl+H.sub.2O.fwdarw.Fe(OH).sub.3+KCl+KF+H.sub.2O,

(22) The quantity of the K.sub.2CO.sub.3 solution is two tons and its pH value is in a range of 45. The element Fe is recycled by a form of Fe(OH).sub.3 flocculent precipitate and the potassium chloride (KCl) and KF solution are recycled to be reused.