Behaviour of a Medium Antimony Concentrate in Flash Smelting Simulation Experiments

摘要

The removal of S, Sb and As from a complex copper concentrate containing on the average 17.7% Cu, 22.3% Fe, 32.5% S, 4.1% As, and 6.8% Sb was studied in oxidizing conditions in flash smelting simulation experiments. Desulfurization was found to be somewhat weaker than with a tetrahedrite concentrate. The removal of antimony followed the same pattern as in the case of tetrahedrite proceeding, however, a little further in the most favorable conditions examined. Earlier results reported from roasting experiments concerning the enhancement of antimony removal kinetics in the presence of arsenic, as well as the retardation of antimony vaporization in the presence of silver were both confirmed in the highly dynamic processing conditions prevailing in the suspension smelting of sulfidic materials.