CERAMIC CHARGE FOR MANUFACTURING ACIDPROOF TILES Russian patent published in 2008 - IPC C04B33/13 

FIELD: chemistry.

SUBSTANCE: ceramic charge for manufacturing acidproof tiles, including argillaceous part of gravitation tailings of zircon-ilmenite ores and chamotte from argillaceous part of gravitation tailings of zircon-ilmenite ores with Fe₂O₃ content more than 5% and wollastonite with content in wt %: CaO -42.1; Fe₂O₃ - 0.9; R₂O - 0.4 and porosity 1.14-1.15%, with the following ratio of components, wt %: argillaceous part of gravitation tailings of zircon-ilmenite ores- 40-60; chamotte from argillaceous part of gravitation tailings of zircon-ilmenite ores with Fe₂O₃ content more than 5% -10-20; wollastonite with content in wt %: CaO -42.1; Fe₂O₃ - 0.9; R₂O - 0.4 and porosity 1.14-1.15%- 30-40.

EFFECT: reduction of product shrinkage.

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