DECORATIVE STONE CAST AND CHARGE FOR PREPARING OF DECORATIVE STONE CAST Russian patent published in 1995 - IPC

FIELD: making of decorative articles. SUBSTANCE: decorative stone cast has the following components, wt.-%: SiO₂ 40.77-47.24; Al₂O₃ 6.26-9.11; FeO 0.48-1.72; Fe₂O₃ 0.20-4.95; CaO 27.35-29.58. MgO 2.42-5.77; Na₂O 2.07-3.71; K₂O 4.24-6.41; B₂O₃ 0.20-4.15; P₂O₅ 0.73-2.06. Charge has the following components, wt. -% : low-iron feldspar rocks 27.2-51.0; borax 0.5-10.0; carbonatites 16.9-43.6, and melilitites 1.8-49.8. Articles were made from silicate melt of mine waste. EFFECT: enhanced quality of stone cast and charge. 2 tbl