| 摘要 |
<p>The present invention relates to a process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides, wherein said ores, after having been subjected to a reducing roasting, then to an oxidizing roasting then a possible crushing, are treated by a first lixiviation with sulfuric acid followed by a lixiviation with thiourea under precise conditions of operation.</p> |
