CHARGE MATERIAL FOR MANUFACTURING GLASS CERAMICS Russian patent published in 1999 - IPC

FIELD: ceramics. SUBSTANCE: invention relates to corundum-based glass ceramics and can be used for manufacturing environmental safe construction parts employed in mechanical engineering, food industry, and construction. Charge material contains 30-60% wastes coming from processing of 24 alundum abrasive wheels with ceramic binder and 40-70% of glass powder manufactured by grinding broken food-packaging glass or glass waste composed of, wt %: silicon oxide 67-73, aluminum oxide 3.2-10, calcium oxide 6.5-6.9, magnesium oxide 4.3-5.1, sodium-potassium oxide mixture 14-14.3, and ferric oxide 0.1-1.5. EFFECT: increased crack resistance. 4 tbl