| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an efficient floatation process when recovering gold from a leached residue of a copper sulfide ore containing the gold or a copper sulfide ore containing a silicate ore containing the gold. <P>SOLUTION: The floatation process is applied when recovering the gold not leached efficiently from the leached residue, the leached residue is subjected to a copper leaching operation, until a copper concentration is brought into 1.0 mass% or less, the leached residue is recovered thereafter by solid-liquid separation, and the obtained leached residue is repulped with water, to recover the gold together with sulfur by floatation. A pH is not regulated, a collector is not added, and only a foaming agent is added, in the floatation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
