Optimum Slag Composition for the Blast-Furnace Smelting of Titaniferous Ores

Abstract

This work is the second part of an investigation aimed at gaining a wider knowledge of the problems met when smelting titaniferous iron ores in the blast furnace. Viscosity measurements of the lower melting slags in the lime-silica-titania-alumina system were studied in neutral atmos. and under reducing conditions. Slag thickening was found to take place in the presence of C. The thickening rate varied with the comp, basically and temp. of the slag. The optimum slag comp. was considered to be that of a slag whose viscosity did not exceed 5 poises after heating in the presence of C at 1500°C for at least 2 hrs.