| 摘要 |
<p>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. </p> |
