The polymetallic sulfide ore with low grade chalcopyrite in the Dulong mining area is characterized by low grade of copper,uneven size distribution and close relationship of copper and zinc minerals.And because of the impact of floatable gangue minerals,the indicators of copper concentrate obtained through the principle flowsheet of selective copper flotation and conventional combination collectors of xanthate are not ideal,and the copper grade of copper concentrate is about 16％,and zinc grade is up to more than 9％ with the copper recovery rate of only about 50％,which did not achieve the purpose of efficient separation for copper minerals,zinc minerals and gangue minerals.Through the optimization research on the reagents system of copper separation,the copper concentrate with copper grade of 21.54％,containing 6.41％ of zinc and with the copper recovery of 53.85％ was obtained.Compared with the original regents system,the content of zinc minerals and easy-floating gangue minerals in the ore has been greatly reduced,and the copper index is obviously improved.
low grade copper minemedicine optimizationquality improvement and removing impurity
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维普
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