Research of HPGR Influence on a Copper Mine Flotation
In order to study the influence of subsequent flotation indexes on a low-grade copper ore in China by high pressure grinding roller,single factor analysis method was used to carry out high pressure grinding roller test,flotation optimization condition test and flotation open circuit comparison test.The re-sults show that under the conditions of grinding fineness of 65%passing-0.074 mm,calcium oxide dosage of 1 000 g/t,MAC-12 dosage of 20 g/t,butyl xanthate dosage of 10 g/t,MAC-12 dosage of 10 g/t,butyl xanthate dosage of 5 g/t,one roughing and one scavenging flotation process,the coarse concentrate with cop-per and sulfur grade of 4.31%and 22.46%respectively and copper and sulfur recovery of 74.382%and 79.053%respectively can be obtained by conventional crushing product flotation.The copper and sulfur grades of the rough concentrate of the flotation of the high pressure grinding roller product are 4.76%and 23.06%,respectively,and the copper and sulfur recovery rates are 88.137%and 87.082%,respectively.The grade of copper and sulfur increased by 0.45 and 0.6 percentage points respectively,and the recovery rate of copper and sulfur increased by 13.755 and 8.029 percentage points respectively.It can be seen that the copper and sulfur grade and recovery rate of the copper ore can be improved by high pressure grinding roller operation.
high pressure grinding rollercopper and sulfur flotationselective dissociation
万方数据
维普
