发明名称 |
METHOD FOR SELECTIVELY RECOVERING LEAD FROM COMPLEX SULPHIDIC NON-FERROUS METAL CONCENTRATES |
摘要 |
The invention relates to a method for selectively recovering lead from complex sulphidic non-ferrous metal concentrates in an electrolytic cell incorporating at least one anode and one cathode and an electrolyte containing chlorine ions, at a temperature beneath the boiling point of the concentrate-containing electrolyte and at a pH beneath 7. Sulphur present in the concentrate is converted substantially into elementary form, and at least the major part of the lead con-tent passes into solution and is then precipitated selectively by cathodic pro-cesses. The invention is characterized in that the concentrate is slurried in anelectrolyte having a chloride-ion strength above about 2 M, preferably in the range 3-5 M, to form a suspension which is caused to flow into contact with or adjacent the surface of anodes located in the cell; and in that the highest possible anodic current density considering required selectivity is maintained during the electro-winning process. |
申请公布号 |
CA1300554(C) |
申请公布日期 |
1992.05.12 |
申请号 |
CA19860516135 |
申请日期 |
1986.08.18 |
申请人 |
BOLIDEN AKTIEBOLAG |
发明人 |
HEDSTROEM, LARS A.;LINDSTROEM, NILS F.R.;SJOEBERG, KENNETH A.S. |
分类号 |
C25C1/00;C25C1/18;C25C5/02;C25C7/00 |
主分类号 |
C25C1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|