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.
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 <25 μm. 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.
COPYRIGHT: (C)2008,JPO&INPIT
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| WO/2022/105859 | KRAS G12D INHIBITORS |
BREWER ROBERT E
ROBERTSON JOANNA M
HAZEN WAYNE W
THOMPSON PHILIP
BAUGHMAN DAVID R
SCHMIDT ROLAND
| US5730776A | 1998-03-24 |
Takaaki Yasumura
Natsuki Morishita