BRIQUETS FOR MANUFACTURING MINERAL WOOL, METHODS FOR MANUFACTURING BRIQUETS AND MINERAL WOOL Russian patent published in 1997 - IPC

FIELD: mineral wool production. SUBSTANCE: briquets include mineral material and, as binder, alkali component-activated granulated cement slag disintegrated to specific surface higher than 200 sq.m/kg and having a glass-like structure. Briquets are manufactured by mixing finely disintegrated mineral material, binder, and water followed by shaping briquets, hardening them, melting, and manufacturing fiber from melt. As alkali component, alkali metal compound, preferably carbonate, hydroxide or silicate is utilized in amount 0.5-12% based on slag weight, whereas blast furnace slag to other mineral materials weight ratio ranges from 1:100 to 1:1. Possible is also calcium oxide or hydroxide or Portland cement clinker addition in amount 1-10% based on slag weight. EFFECT: increased strength and stability under storage of briquets which do not destroy in melting furnace at temperatures up to 1000 C. 9 cl, 2 tbl