Selective flotation of enargite from chalcopyrite by electrochemical control

The test results indicate that chalcopyrite began to oxidize quickly at a much lower potential than enargite. Enargite could be floated well at a potential higher than +0.2 V vs. SCE while chalcopyrite was completely depressed at a potential higher than +0.2 V vs. SCE. Selective flotation revealed that enargite can be successfully removed from chalcopyrite through controlling the pulp potential higher than +0.2 V and lower than +0.55 V vs. SCE.