Continuous method for removing copper from lead

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

1981-06-11

1983-06-28

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 78, 266235, C22B 1306

Patent

active

043903630

ABSTRACT:
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 acceptable and requires a lead inventory only about one third of that required by conventional batch processes.

REFERENCES:
patent: 1522765 (1925-01-01), Wilke
patent: 1922301 (1933-08-01), Kekich
patent: 4042228 (1977-08-01), Ward et al.
patent: 4073481 (1978-02-01), Lawson et al.

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