| 摘要 |
<p>A process for the treatment of chalcopyrite ore or concentrate is disclosed, The chalcopyrite is contacted with an excess of gaseous sulphur dioxide in the substantial absence of oxygen at a temperature in the range between 700.degree.C, and the fusion point of the chalcopyrite, In a preferred embodiment the gaseous sulphur dioxide contains water, In another preferred embodiment the treated chalcopyrite is heated, in the substantial absence of oxygen, to a molten state so as to facilitate separation of a copper-rich phase,</p> |
