Production of Ferrosilicozirconium and Zirconium Corundum

摘要

Ferrosilicozirconium and zirconium corundum are produced by melting together a zirconium concentrate, iron ore and aluminium in a weight ratio of 51-69:9.9-16.5: 19.8-34.8, respectively at a temperature of 1,950-2,000 DEG C and separately casting the resulting ferrosilicozirconium and zirconium corundum phases, molten alumina at 1,950 to 2,000 DEG C being added to the latter phase in an amount of 0.5 to 50% based on the weight of the zirconium concentrate prior to casting thereof.