| 摘要 |
<p>A hydrometallurgical process characterised at least in part by an electrolytic method enabling the direct generation of ferric ions at an anode in the presence of chloride ions, without the formation of chlorine gas, the process allowing the recovery of valuable metals dissolved with the iron. The process is further characterised by the formation of a negatively charged complex in a solution containing ferrous and/or ferric. The process may still further be characterised by a process characterised by the selective concentrating of dissolved metals during electrowinning, and the simultaneous production of highly concentrated ferric solutions, without the formation of undesirable toxic species such as chlorine gas.A process for the atmospheric dissolution of sulphide minerals, the process comprising the oxidation of the sulphide minerals by ferric ions to form ferrous ions during the leaching operation, the ferrous ions thus formed are thereafter oxidised in a separate process to regenerate ferric ions, the regenerated ferric ions being reintroduced to the oxidation of the sulphide minerals.</p> |
