Method for extracting heavy metals from sulphurated mineral conc

Details Method for extracting heavy metals from sulphurated mineral conc Method for extracting heavy metals from sulphurated mineral conc

1981-03-09

1983-12-13

Wiliams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204 61R, C25C 300, C25C 334

Patent

active

044203802

ABSTRACT:
An electrolytic method is described for extracting heavy metals, in particular lead, from sulphide concentrates, wherein the concentrates are dissolved in molten chlorides and chlorinated. Then the chlorides of the metals to be extracted are subjected to electrolysis in molten salts, and the vapor phase sulphur separated by the chlorination step is then recovered as elemental sulphur.

REFERENCES:
patent: 510276 (1893-12-01), Lyte
patent: 1299947 (1919-04-01), Ingeberg
patent: 1748748 (1930-02-01), Ashcroft
patent: 4011146 (1977-03-01), Coltrinari et al.

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