The disclosure describes in some examples a technique that includes the disclosure describes a technique that includes depositing a carbon powder and a resin powder on a surface of a fiber preform, where the fiber preform includes a plurality of fibers and defines interstitial spaces between the plurality of fibers, and vibrating the fiber preform to allow the carbon powder and the resin powder to infiltrate the interstitial spaces between the plurality of fibers of the fiber preform to form an infiltrated preform.

Ceramic particles for use in a solar power tower and methods for making and using the ceramic particles are disclosed. The ceramic particle can include a sintered ceramic material formed from a mixture of a ceramic raw material and a darkening component comprising MnO as Mn.sup.2+. The ceramic particle can have a size from about 8 mesh to about 170 mesh and a density of less than 4 g/cc.

A sintering-free inorganic ceramic brick-plate and its preparation method are disclosed. The sintering-free inorganic ceramic brick-plate includes following components by mass parts: 25-40 parts of magnesium oxide; 20-35 parts of magnesium chloride; 20-30 parts of fumed silica; 10-20 parts straw powders; 0.1-0.3 parts of graphene powders with a particle size of 2000 meshes; and 0.2-0.4 parts of airgel powders with a particle size of 100 nm. Compared with the prior art, the present invention utilizes a variety of raw natural non-toxic natural mineral raw materials, namely, the graphene powders with the particle size of 2000 meshes and the airgel powders with the particle size of 100 nm for mixing, and then the mixed raw materials can be solidified at room temperature and form sheets, and then the surface of the sheets is processed through printing or spraying glaze, so as to achieve the effect of high-grade tiles and natural marble.

A manufacturing method of a honeycomb structure including: a dry mixing step of dry-mixing raw materials to form the honeycomb structure by a batch treatment, a wet mixing step of adding a liquid including at least one selected from the group consisting of water, a surfactant, a lubricant and a plasticizer to a dry mixture obtained in the dry mixing step, to perform wet mixing, a kneading step of kneading a wet mixture obtained in the wet mixing step, and a forming step of extruding a forming material prepared in the kneading step, wherein in the dry mixing step, a used forming material passed through the forming step is added as a part of the raw material, to perform dry mixing, and the kneading step includes a liquid re-adding step of further adding the liquid in a process of kneading the wet mixture.

A manufacturing method of a honeycomb structure including: a dry mixing step of dry-mixing raw materials to form the honeycomb structure by a batch treatment, a wet mixing step of adding a liquid including at least one selected from the group consisting of water, a surfactant, a lubricant and a plasticizer to a dry mixture obtained in the dry mixing step, to perform wet mixing, a kneading step of kneading a wet mixture obtained in the wet mixing step, and a forming step of extruding a forming material prepared in the kneading step, wherein in the dry mixing step, a used forming material passed through the forming step is added as a part of the raw material, to perform dry mixing, and the kneading step includes a liquid re-adding step of further adding the liquid in a process of kneading the wet mixture.

Proposed is a method of forming cremation crystals, which is specifically a method of forming cremation crystals by using H3PO4 as a catalyst in a heat treatment process of ashes, thus preventing the ashes from being damaged by volatilization and enabling the crystals to be formed more efficiently. More specifically, proposed is a method of forming cremation crystals by mixing ashes with phosphoric acid obtained through the reduction of phosphorus in skeletal remains, which enables the cremation crystals composed purely of skeletal remains to be provided without additionally introducing other additives, thus satisfying the needs of families or guardians of the deceased desiring to keep cremation crystals composed purely of ashes, and enables both the color and transparency of ultimately formed cremation crystals to be achieved through a single formation process without limitation, thus satisfying the aesthetic needs of consumers and being easily applicable to all kinds of jewelry.

A method for preparing a refractory from a secondary aluminum dross, the secondary aluminum dross including silica and alumina, and the refractory including a basic magnesium-aluminum refractory or an acidic magnesium-aluminum-silicon refractory; when the secondary aluminum dross includes less than 5% by mass of silica, the refractory is the basic magnesium-aluminum refractory, and the method includes: subjecting a secondary aluminum dross powder, an aluminum source, a magnesium source and a magnesia-alumina spinel seed crystal to first mixing, and subjecting a resulting first mixture to one-step sintering to obtain the basic magnesium-aluminum refractory; when the secondary aluminum dross includes not less than 5% by mass of silica, the refractory is the acidic magnesium-aluminum-silicon refractory, and the method includes: subjecting a secondary aluminum dross powder, a silicon source, and a magnesium source to second mixing, and subjecting a resulting second mixture to one-step sintering to obtain the acidic magnesium-aluminum-silicon refractory.

Methods of making sintered ceramic particles include preparing an aqueous slurry containing an alumina-containing raw material and a binder containing a raw plant material, forming the slurry into green pellets, and sintering the green pellets to provide the sintered ceramic particles.

The present invention relates to a method for obtaining calcium aluminates for metallurgical use from non-saline aluminum slags by means of reactive grinding and thermal treatment.

The present invention relates to investment casting moulds comprising a furnace dust, wherein said furnace dust comprises ZrO.sub.2 and/or Al.sub.2O.sub.3. The present invention also relates to investment casting moulds comprising a metal oxide dust comprising ZrO.sub.2 and one or more materials selected from alumina, silica and aluminosilicate, and wherein said metal oxide dust has a d.sub.50 of 10 m or less. The invention also relates to compositions for the production of investment casting moulds, the use of dusts in the formation of investment casting moulds, and the use of investment casting moulds of the invention.