Effect of antimonate on the bacterial oxidation of sulfide minerals extracted from persistent gold-bearing ores
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Results are reported from a study of the effect of the antimonate content of sulfides on oxidation activity, pH, and oxidation-reduction potential (E h ) in bacterial oxidation. A comparison is made between the bacterial-oxidation parameters of selective arsenic and antimony concentrates and a collective sulfide concentrate. The study results show that the kinetics of bacterial oxidation of the arsenic concentrate can be improved significantly by performing flotation in accordance with a new flow scheme that extracts antimonate from gold-bearing sulfide ore as a separate concentrate.
Keywordsbacterial oxidation sulfide minerals antimonate arsenopyrite pyrrhotine pyrite gold-bearing ores content leaching parameters flotation concentration selective separation extraction rate of bioacidification concentrate arsenic antimony
This study was carried out with financial support from the Research and Development Program of the Moscow Institute of Steels and Alloys.
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