PROCESSING OF BLAST FURNACE DUST, FORMING INSILICON MELTING, INTO SILICON CARBIDE POWDER

摘要

Kinetics of formation of silicon carbide powder from pelletized mixture of blast furnace dust of ore smelting furnaces which melt technical silicon, oil coke and sulfide-yeast binder on ammonium base, is studied at atmospheric pressure and in 1670-1870 K temperature interval. The product containing 90,9-98,4 percent of silicon carbide as acicular #beta#-SiC crystals (having length of 2-50 #mu#m) and enlarged polyhedron particles (with size up to 100 #mu#m) is obtained.