CERAMIC MIXTURE Russian patent published in 2014 - IPC C04B33/132 

FIELD: chemistry.

SUBSTANCE: ceramic mixture contains, wt %: clay 38.0-40.0; kaolin 22.0-24.0; quartz sand 16.0-18.0; potsherd 4.0-6.0; calcium phosphate 8.0-10.0; pre-dried expanded pearlite 6.0-8.0. Firing temperature is 1070-1100°C. Articles cast from the slurry are aired off in moulds to moisture content of 18-21% when the cast article freely separates from the walls of the mould. The articles are then dried to moisture content of 1-6% and taken for firing at temperature of 1070-1100°C. A layer of low-melting glaze suspension is deposited on the surface of the fired articles, dried and then fastened by fusing at temperature of 870-900°C.

EFFECT: low firing temperature of articles made from the ceramic mixture.

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