SLAKING-RESISTANT REFRACTORY AGGREGATES AND PROCESS FOR PRODUCING THE SAME

摘要

Soaking granular CaO-contd. clinker (i.e. dolomite or calcia clinker) into O-H3PO4 or phosphates (0.25-10 wt.% amt. to clinker, i.e. o- phosphate of alk. metal, Zn, Al, Fe or ammonium) for enough time to form almost insoluble calcium phosphate-coat-layer on the granular, and calcining at the above 300 deg.C to give slakingresistant refractory aggregates.