| 摘要 |
<p>RECOVERY OF COPPER FROM CHALCOPYRITE Chalcopyrite is converted to ferrous chloride and insoluble copper sulfides comprising covellite and chalcocite by reacting the chalcopyrite with cupric chloride and/or cuprous chloride at a temperature of at least about 110.degree.C for sufficient time in order to convert substantially all of the reacted chalcopyrite to copper sulfides. Copper may then be conventionally recovered from the copper sulfides. In a preferred embodiment the Chalcopyrite to be treated is in the presence of one or more metal impurities, selected from the group consisting of lead, bismuth and zinc, as these metal impurities will be solubilized and thereby separated from the solid copper sulfides.</p> |
