STONE CASTING Russian patent published in 2008 - IPC C04B32/00 

FIELD: construction engineering.

SUBSTANCE: proposed stone casting contains the following constituents, mass-%: SiO₂, 48.0-52.0; Al₂O₃, 2.0-4.0; TiO₂, 4.0-5.0; Fe₂O₃, 5.5-6.5; MnO₂, 3.5-4.5; MgO, 14.5-16.5; CaO, 8.0-10.0; K₂O, 0.8-1.8; Cr₂O₃, 1.5-2.5; As₂O₃, 0.1-0.2; CuO, 4.0-5.0. Used as main raw material for stone casting are basalt and andesite volcanic slags at addition of the following wastes: blast-furnace process, steelmaking process, copper melting process, titanium slag and broken glass.

EFFECT: enhanced strength of stone casting.

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