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2011•Nonferrous MetalsRequires access

The application and mechanism study of sodium sulfide in bulk copper-lead flotation

Chang-Kai Li

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Abstract

The addition of Sodium sulfide can reduce the concentration of Cu2+ and Pb2+,thus it can prevent the activation of sphalerite by Cu2+ and Pb2+,resulting in good depression of sphalerite in bulk copper-lead flotation.In this paper,the flotation of a complex copper-lead-zinc multi-metallic sulphide ore is carried out with combined xanthate as collector and combined Na2S+Na2SO3+ZnSO4 as depressant.After the open circuit test of one roughing,one scavenging and one cleaning,a mixed Cu-Pb concentrate with 11.21 % Cu grade,87.40 % copper recovery,44.09 % Pb grade,79.38 % lead recovery,and 2.08 % Zn grade is obtained.

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What this paper is about

The addition of Sodium sulfide can reduce the concentration of Cu2+ and Pb2+,thus it can prevent the activation of sphalerite by Cu2+ and Pb2+,resulting in good depression of sphalerite in bulk copper-lead flotation.In this paper,the flotation of a complex copper-lead-zinc multi-metallic sulphide ore is carried out with combined xanthate as collector and combined Na2S+Na2SO3+ZnSO4 as depressant.After the open circuit test of one roughing,one scavenging and one cleaning,a mixed Cu-Pb concentrate with 11.21 % Cu grade,87.40 % copper recovery,44.09 % Pb grade,79.38 % lead recovery,and 2.08 % Zn grade is obtained.

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Available abstract

The addition of Sodium sulfide can reduce the concentration of Cu2+ and Pb2+,thus it can prevent the activation of sphalerite by Cu2+ and Pb2+,resulting in good depression of sphalerite in bulk copper-lead flotation.In this paper,the flotation of a complex copper-lead-zinc multi-metallic sulphide ore is carried out with combined xanthate as collector and combined Na2S+Na2SO3+ZnSO4 as depressant.After the open circuit test of one roughing,one scavenging and one cleaning,a mixed Cu-Pb concentrate with 11.21 % Cu grade,87.40 % copper recovery,44.09 % Pb grade,79.38 % lead recovery,and 2.08 % Zn grade is obtained.

Key concepts: Sphalerite, Xanthate, Copper, Sodium sulfide, Depressant, Froth flotation, Copper sulfide, Sulfide

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