Title:
PRODUCTION OF LEAD FROM ORES AND CONCENTRATES
Document Type and Number:
WIPO Patent Application WO/1980/002164
Kind Code:
A1
Abstract:
Process for selectively recovering from a lead bearing ore or concentrate (4) in an electrolytic cell (1) including at least one anode (6) and one cathode (7). The process includes contacting the ore or concentrate (4) with an electrolyte (3) containing chloride ions and maintaining the electrolyte (3) at a temperature ranging up to the boiling point of the electrolyte (3) and at a pH of up to 7 whilst maintaining a low (less than 200 amp/m2) anode current density. By this process sulfur in the ore or concentrate (4) is converted to its elemental form whilst lead is taken into solution whilst any other base metal existing in the ore or concentrate (4) remains substantially undissolved. The process avoids formation of a detrimental elemental sulfur film on the ore or concentrate resulting in lower cell voltages and selective lead recovery.
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Inventors:
EVERETT P (AU)
Application Number:
PCT/AU1980/000001
Publication Date:
October 16, 1980
Filing Date:
April 02, 1980
Export Citation:
Assignee:
DEXTEC METALLURG (AU)
EVERETT P (AU)
EVERETT P (AU)
International Classes:
C25C1/00; C25C1/18; C25C5/02; C25D3/34; C22B; C25C; (IPC1-7): C25C5/02; C25C1/18
Foreign References:
| US4115222A | 1978-09-19 | |||
| US3787293A | 1974-01-22 | |||
| US3736238A | 1973-05-29 | |||
| US3673061A | 1972-06-27 | |||
| US2761829A | 1956-09-04 | |||
| US3957601A | 1976-05-18 | |||
| US3772003A | 1973-11-13 | |||
| US1285690A | 1918-11-26 | |||
| US1456798A | 1923-05-29 | |||
| US0846642A | 1907-03-12 | |||
| AU466387B2 | 1975-10-30 | |||
| AU4193878A | 1979-06-14 |
Other References:
Transactions of the Indian Institute of Metals, Vol. 28, No. 4, issued 1975 August, S. Dixit, S. Venkatachalam and R. Mallikarjunan, 'Direct electrolytic recovery of lead from lead sulphide and galena concentrate', see pages 293-298.
Erzmetall, Vol. 32, No. 9, issued 1979 Sept., R. Kammel and F. Nilmen, 'Uber die Bleiung Schwefelgewinnung aus Bleisulfid-suspensionen in waBrigen Elektrolyten', see pages 389-395.
Erzmetall, Vol. 32, No. 9, issued 1979 Sept., R. Kammel and F. Nilmen, 'Uber die Bleiung Schwefelgewinnung aus Bleisulfid-suspensionen in waBrigen Elektrolyten', see pages 389-395.
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