CERAMIC COMPOUND Russian patent published in 1999 - IPC

FIELD: porcelain and faience industry, more particularly manufacture of porcelain products. SUBSTANCE: ceramic compound comprises, wt %: permatite, 21.2-24.3; quartz sand, 17.9-20.6; clay, 4.9-5.02; kaolin, 32.1-35.0; 1st roasting crock, 3.2-3.4; 2nd roasting crock, 1.6-1.7; porcelain production waste. Ratio of waste components is as follows, wt %; SiO₂, 66.1- 66.5; Al₂O₃, 21.7-28.16; CaO, 1.06-1.16; MgO, 0.88-0.9; K₂O 2.39-2.41; Fe₂O₃ 0.28-0.3; N₂O, 1.35-137 uncalculated components and calcination losses, the balance. EFFECT: lower price cost of production of artistic porcelain products due to narrower range of stock components used in ceramic compound, utilization of waste and improved whiteness of products. 2 cl, 3 tbl