Flotation for Gold-Silver Sulphide Ores
Many gold and silver deposits contain precious metals locked within sulphide minerals such as pyrite, arsenopyrite, chalcopyrite and galena. Flotation produces a sulphide-rich concentrate for downstream processing.
Circuit Stages
Rougher Flotation
Rougher flotation maximizes overall gold and silver recovery with appropriate cell sizing, residence time and reagent dosing to achieve >90% recovery.
Cleaner Flotation
Cleaner stages upgrade concentrate grade by rejecting entrained gangue. Multiple cleaner stages with regrinding between stages improve separation efficiency.
Reagent Selection
WSHT optimizes collector (xanthates, dithiophosphates), frother (MIBC) and modifier selection based on ore mineralogy to maximize recovery and concentrate grade.