The present disclosure relates to a composite of sintered mullite reinforced corundum granules and a method for its preparation. The composite comprises mullite and corundum in an interlocking microstructure. The process for preparing the composite involves the steps of admixing the raw materials followed by sintering to obtain the composite comprising sintered mullite reinforced corundum granules.

A composition for a heat treatment jig includes: alumina at a weight ratio within the range of 5% or more and 25% or less; mullite at a weight ratio within the range of 0% or more and 35% or less; cordierite at a weight ratio within the range of 15% or more and 35% or less; spinel at a weight ratio within the range of 0% or more and 35% or less; and fused silica at a weight ratio within the range of 15% or more and 50% or less. The composition for a heat treatment jig is used for the method of manufacturing a heat treatment jig, such as a heat treatment container.

The invention involves a silky, fine-grained matte ceramic tile and its preparation method. A blank material for the ceramic tile consists of the following components: nepheline powder: 10%-15%; high-carbon mud: 10%-15%; low-carbon mud: 15%-22%; medium-high-carbon mud: 10%-15%; recycled waste blank: 5%-10%; feldspar powder: 5%-10%; albite powder for paving: 12%-20%; waste porcelain powder: 5%-10%; desulfurized waste: 0%-7%; waste from edging and polishing: 15%-26%; liquid gel remover: 0.3%-1.0%; liquid reinforcing agent: 0.2%-0.8%. Its preparation method comprises the following steps: preparing raw materials for a blank body and ball milling.fwdarw.spray drying.fwdarw.aging.fwdarw.pressing and molding of the blank body.fwdarw.drying.fwdarw.polishing the blank body.fwdarw.spraying water.fwdarw.applying a glaze.fwdarw.applying a decorative pattern.fwdarw.firing.

A ceramic deep-frying device capable of withstanding high temperatures and releasing far-infrared energy is made by grinding and mixing mullite, spodumene, energy ceramic material, ball clay, and kaolin clay into clay blank; molding the blank into ceramic green body; and sintering the green body at 1250-1320° C. for 18-24 hours. The device is completely immersed in the oil in a deep-frying vessel while leaving a gap between the device and heating pipe in the vessel or the inner bottom wall of the vessel, for enabling the oil to circulate through the through holes in the device due to temperature difference in the oil, causing the energy ceramic material to release anions and far-infrared rays that decrease van der Waals forces between oil molecules, and hence split, the oil molecules, thereby extending the service life of the oil, shortening the deep-frying time required, and lowering the oil content of deep-fried food.

A ceramic for construction or technical applications, composed of at least one of Municipal Solid Waste Incinerator Bottom Ash (MSWIBA) and other recycled industrial solid waste and different methods of forming such ceramics. Various techniques illustrate how ceramics are formed using at least one of extrusion shaping, dry powder compaction and agglomeration, any of which can be preceded by a pre-treatment process of received feedstock.

The present invention is a composition and shaping of a ceramic material comprising at least one frit and at least one inorganic raw material. Some of the advantages are that said material requires a heat treatment no higher than 1180° C., that the duration of said heat treatment does not exceed 60 minutes, that the thermal expansion coefficient after the heat treatment is less than 25×10.sup.−7° C..sup.−1 in the temperature range 25° C. to 500° C. and that the material exhibits a high resistance to thermal shock, withstanding at least 10 consecutive thermal shock cycles between 600° C. and 25° C. without forming cracks or structural changes. The ceramic material composition is shaped by uniaxial pressing, band pressing, pour moulding, extrusion, injection moulding or lamination.

A lightweight high-strength ceramsite, comprising solid raw materials and activator as the raw materials, which can be respectively expressed in parts by weight, the solid raw materials: 100 parts, the activator: 1-15 parts; wherein said solid raw materials comprise fly ash: 100 parts, high-alumina fly ash, bauxite and red mud: 6-18 parts, silica fume: 1-5 parts, surfactant: 0.1-3 parts, plasticizer: 6-24 parts; and said activator comprises alkali metal hydroxide: 5-20 parts and alkali metal silicate: 80-95 parts. The lightweight high-strength ceramsite product prepared has a density level of 700-1100 kg/m3 and cylindrical compressive strength of 10-20 MPa, and thus is not susceptible to damage.

The invention relates to a process for the preparation of a ceramic article containing industrial, domestic or natural sludge, the ceramic article, and treated domestic or natural sludge suitable as raw material for the production of the ceramic article. The sludge (which definition excludes digestate that is obtained from a Municipal Solid Waste (MSW) process comprising liquefaction of the organic fraction of MSW by addition of one or more enzymes) has been pretreated by a process comprising the optional step of drying the sludge to a moisture content of at most 10% by weight, resulting in dried sludge, and heating the sludge or dried sludge in a spouting bed incinerator and reducing the content of organic matter to less than 5% by weight. The invention furthermore relates to a process wherein the pretreatment comprises using the domestic or natural sludge as a food source for larvae.

The present invention discloses a method for preparing a low-density proppant by taking oil-based mud wastes as raw materials. The method includes following steps: S1, determining content of oils, silicon oxide, alumina and water in the oil-based mud wastes; S2, adding a viscosity modifier, a framework material and a pore-forming agent into oil-based mud wastes so as to obtain mixed slurry; S3, performing ball milling on mixed slurry to form powder, granulating and drying the powder, and forming a proppant pellet billet; S4, performing dehydrogenation pre-sintering on the pellet billet, and performing carbide reaction pre-sintering; and S5, performing final sintering in a natural gas protective atmosphere, thereby obtaining the low-density proppant that takes silicon carbide as the framework material. In the present invention, the low-density proppant is prepared by taking the oil-based mud wastes produced in a drilling process as the raw materials, thereby recycling the oil-based mud wastes.

The present disclosure relates to the manufacture of ceramic products by aqueous gelcasting. Exemplary ceramic products include sanitary ware, such as toilets and sinks. The process includes a slurrying step, a mixing step, a molding step involving aqueous gelcasting, a drying step, a glazing step, and a firing step.