Copper Sulphide Minerals and Ores

Products Grade (%) Recovery (%) Grade (%) Recovery (%) ,(mV) pH JniV) pH 

Tests have been done further on the separation of a Cu-Pb mixed concentration of ethyl xanthate flotation of copper-lead-iron sulphide ore by E- control modifying with H2O2. Test results are presented in Table 10.3. It indicates the possibility of selective flotation separations of copper-lead flotation concentration by control. The feed of copper-lead mixed concentrated assayed Cu 6.53% and Pb 62.38%. Using hydrogen peroxide as a potential modifier, a copper concentration with 24.19% Cu and recovery with 89% can be obtained after separation. 

Potential controlled flotation separation of chalcopyrite-pyrite ores has been extensively tested to be one of the most probable to obtain industrial application on the basis of the fact that chalcopyrite has strong collectorless and collector floatability whereas pyrite has poor collectorless floatability. 

It is further substantiated by the pilot test results for a copper sulphide ore (see Table 10.6). To maintain the pulp potential in the range of 142- 189 mV, the flotation separation of copper-sulphur ore can obtain good results in collectorless or xanthate flotation system. The grade of feed ore is about 3.5% Cu, the grade of the obtained concentrate can reach to 27% - 28% Cu and recovery is above 95%. 

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