| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an effective method for efficiently recovering copper from a copper-containing substance (particularly copper from a copper sulfide such as chalcopyrite and chalcocite), which realizes a high copper recovery rate at a reduced cost compared to conventional treatment techniques. <P>SOLUTION: The method for recovering copper and other metal values from a metal-containing material generally utilizes ultrafinely grinding and medium temperature (140-180°C) pressure leaching technique, wherein ultrafine ground powders are controlled to reduce its grain size to <25μm. The method of the present invention is beneficial for recovering metals (e.g. copper, gold, silver, nickel, cobalt, molybdenum, rhenium, zinc, uranium and platinum-group metals) from metal-bearing materials, and shows a particular utility in connection with the extraction of copper from copper sulfide ores and concentrates. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
