The electrochemical mechanism and flotation behavior of galena in Ammonium butyldithiophosphate solution

Electrochemical behaviour of galena is studied in Ammonium dibutyldithiophosphate system, especially in high alkalinity media. It has been shown the product of galena with Ammonium dibutyldithiophosphate are element S and Pb(DTP) 2. Using sequential selective flotation of galena with DTP as the collector in high alkalinity,the suitable dosage of DTP was above 10^-3mol / L,which would affect the selectivity、increase the costing and threaten the environment. The above shortages can be solved by mixture with Diethyldithiocarbamate(DDTC). In addition,the suitable mass ratio was 1∶ 1 at pH = 11. 0,the commensurately dosage of DDTC was about 2. 2 × 10^-5mol / L,DTP was about 2. 5 × 10^-5mol / L,the optimum pulp potential was about 0. 2V.