| 摘要 |
<p>The res or concentrates composed of a mixture of sulphide Cu-Fe-, Cu-As-, and Cu-Sb ores and to which is pref. added quartz sand, are crushed by impact using a ball mill so that lattice distortions and/or lattice defects are produced in the ore. The crushed ore is then treated in an oxidising acid leaching solution. A gaseous oxidising medium is used at a press.</p> |
