A method for manufacturing a ceramic material for thermal energy storage, includes producing a mixture of at least particles of clay and particles of natural and/or synthetic phosphate, and water, the mixture comprising between 0.5% and 40% by weight of phosphate compared to the weight of the mixture with the exception of water, and shaping and firing of the mixture to obtain the ceramic material. A ceramic material for thermal energy storage includes: a matrix of clay and, if appropriate, sand, and particles of a natural and/or synthetic phosphate dispersed in the matrix, the ceramic material comprising between 0.5% and 40% by weight of phosphate compared to the weight of the ceramic material.

A method for storing thermal energy in the ceramic material includes: placing a heat transfer fluid in contact with the ceramic material, to transfer heat from the heat transfer fluid to the ceramic material in a charge phase, and to transfer heat from the ceramic material to the heat transfer fluid in a discharge phase.

A method for manufacturing a ceramic material for thermal energy storage, includes producing a mixture of at least particles of clay and particles of natural and/or synthetic phosphate, and water, the mixture comprising between 0.5% and 40% by weight of phosphate compared to the weight of the mixture with the exception of water, and shaping and firing of the mixture to obtain the ceramic material. A ceramic material for thermal energy storage includes: a matrix of clay and, if appropriate, sand, and particles of a natural and/or synthetic phosphate dispersed in the matrix, the ceramic material comprising between 0.5% and 40% by weight of phosphate compared to the weight of the ceramic material.

A method for storing thermal energy in the ceramic material includes: placing a heat transfer fluid in contact with the ceramic material, to transfer heat from the heat transfer fluid to the ceramic material in a charge phase, and to transfer heat from the ceramic material to the heat transfer fluid in a discharge phase.

A ceramic membrane is provided, which may include glass, incinerator fly ash, kaolin and palygorskite. The weight percent of the glass may be 3060 wt %. The weight percent of the incinerator fly ash may be 530 wt %. The weight percent of the kaolin may be 050 wt %. The weight percent of the palygorskite is 030 wt %.

A ceramic membrane is provided, which may include glass, incinerator fly ash, kaolin and palygorskite. The weight percent of the glass may be 3060 wt %. The weight percent of the incinerator fly ash may be 530 wt %. The weight percent of the kaolin may be 050 wt %. The weight percent of the palygorskite is 030 wt %.

The present invention relates to a method of forming a 3D ceramic structure by adding a 3D structure with one or more layer(s) of ceramic mixture onto a ceramic substrate. The present invention also relates to a 3D ceramic structure as well as to a green 3D ceramic structure.

The present invention relates to a method of forming a 3D ceramic structure by adding a 3D structure with one or more layer(s) of ceramic mixture onto a ceramic substrate. The present invention also relates to a 3D ceramic structure as well as to a green 3D ceramic structure.

A ceramic composition which can be used as a sintering aid includes 1-2 mol % of magnesium oxide (MgO), 5-15 mol % of aluminum oxide (Al.sub.2O.sub.3), 25-40 mol % of silicon dioxide (SiO.sub.2), 40-55 mol % of calcium oxide (CaO), 0.1-8 mol % of ferric oxide (Fe.sub.2O.sub.3), 0.1-2 mol % of sulfur trioxide (SO.sub.3) and 0.1-2 mol % of titanium oxide (TiO.sub.2). Alternatively, the ceramic composition includes 1-8 mol % of MgO, 5-15 mol % of Al.sub.2O.sub.3, 25-40 mol % of SiO.sub.2, 40-55 mol % of CaO, 0.1-8 mol % of Fe.sub.2O.sub.3, 0.1-2 mol % of SO.sub.3 and 0.9-2 mol % of TiO.sub.2.

The present invention relates to an artificial stone tile comprising natural rock and a method for manufacturing the same. According to the present invention, the artificial stone tile may be manufactured by finely crushing natural rock, which is inexpensive to marble or granite, mixing the powder with an adhesive for increasing cohesion, heat resistance, durability and strength, forming the mixture into a tile shape under high pressure, and subjecting the formed tile to first calculation at high temperature, quenching at cold temperature, and second calcination at low temperature. The artificial stone tile may reproduce the same texture as natural stone, has better abrasion resistance and strength, is environmentally friendly without using synthetic resin, and may be supplied at low prices.

A method of forming a ceramic product, the method comprising producing a ceramic forming mixture in the form of a slurry, causing the slurry to form, extruding the formed slurry to produce a plurality of lengths of extruding material each with a diameter of less than 10 mm, firing the extruded material so as to partially sinter the extruded material, forming the partially sintered extruded material into a required shape for a product, and subsequently firing the shaped partially sintered extruded material to form the ceramic product.

A method of forming a ceramic product, the method comprising producing a ceramic forming mixture in the form of a slurry, causing the slurry to form, extruding the formed slurry to produce a plurality of lengths of extruding material each with a diameter of less than 10 mm, firing the extruded material so as to partially sinter the extruded material, forming the partially sintered extruded material into a required shape for a product, and subsequently firing the shaped partially sintered extruded material to form the ceramic product.