Study on Removal Rule of Impurity Elements in Preparation of Ferromolybdenum from Calcium Molybdate

Calcium molybdate is a waste produced by the molybdenum industry, and it is very feasible to replace part of molybdenum oxide with calcium molybdate for smelting by the carbon reduction method. In this paper, through the one-factor test, we obtained the optimal conditions for the removal of impurity elements P, S, C, and Si as follows: melting temperature of 1525°C, holding time of 25 min, and alkalinity of 1.3. The contents of impurity elements P, S, C, and Si in ferromolybdenum alloy were detected as 0.046