Continuous method and apparatus for removing copper from lead

Details Continuous method and apparatus for removing copper from lead Continuous method and apparatus for removing copper from lead

C - Chemistry, Metallurgy

22

B

23/129, 53/335,

C22B 13/06 (2006.01)

Patent

CA 1175237

A B S T R A C T A continuous method and apparatus for removing copper from lead comprises introducing molten lead and sulphur to the upper end of a vertical stirred reaction vessel, maintaining a dispersion of sulphur in the lead without substantial back-mixing and thereafter recovering the dispersion and allowing the formed copper sulphide to float to the surface. The process is suitable for continuous operation on a small scale, e.g. 3 tons per hour, is environmentally aceptable and requires a lead inventory only about one third of that required by con- ventional batch processes.

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