Provided are thermally insulating materials comprising 1 to 95 wt % ceramic oxide, 1 to 30 wt % inorganic binding agent, and treated at a temperature of less than about 1000 C.; processes for producing the insulating materials; and uses thereof.

Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.

The present invention relates to a process for producing building materials, such as bricks, lightweight aggregates and concrete, which building materials comprise digestate obtained from municipal solid waste (MSW) which has been added one or more enzymes to liquefy the organic fraction of MSW.

The present invention relates to a porcelain stoneware element for the construction of driveways.

Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.

Provided is a petroleum fracturing proppant prepared from flyash and waste ceramics, the petroleum fracturing proppant being prepared from the following components: 40 wt. %-90 wt. % of main material, the main material being flyash and waste ceramics; 1 wt. %-40 wt. % of auxiliary material, the auxiliary material being potassium feldspar powder and manganese ore powder; and the sum of the main material and the auxiliary material is 100%. The present invention employs low-cost flyash and waste ceramics as raw material, and the petroleum fracturing proppant prepared under a low temperature has low apparent density and strong crushing resistance, and is also low cost and reduces energy consumption.

A fly ash composition including fly ash and a plasticizing agent and being in a powder form is disclosed. The plasticizing agent is capable of binding the fly ash particles in the fly ash composition together on pressing of the fly ash composition. Processes of forming shaped articles containing fly ash may utilize the fly ash composition and/or mixtures containing fly ash and have low water content and may exhibit sufficient green strength to be handled by industrial equipment.

During lightweight aggregate (LWA) production through sintering process, formation of liquid phase captures emitted gas to form pores in the LWA and leads to successful bloating. As the LWA undergoes sintering in the kiln, the liquid phase starts to form on the LWA surface. Accordingly, in a rotary kiln where the LWA are continually rolling over each other, the touching surfaces of LWAs with liquid phase start to adhere together and form lumps of LWA exiting the furnace. This method prevents agglomeration of spherical LWA during sintering. The LWA can be produced from clay, slate, shale, and potentially other waste materials. This method results in production of discrete spherical LWA particles that can be coated with waste fly ash particles to form a thin layer on the surface of LWA that will not melt during sintering and will prevent touching surfaces of LWA particles from sticking together and forming lumps.

The present invention relates to a technology for the production of porcelain stoneware products, wherein the treatment process allows to re-use recovery materials coming from the treatment of urban waste. In particular, the present invention relates to the production of products for the construction of driveways.