To provide a method for concentrating gold contained in a leach residue obtained by leaching copper from a gold-containing copper sulfide mineral so as to be efficiently recovered in a copper refining process where copper is recovered from a copper sulfide mineral by a wet process.
The method is provided with: a leaching stage where a gold-containing copper sulfide mineral is leached; a floatation stage where the obtained leach residue is subjected to floatation so as to be separated into a float fraction and a sink fraction; and a desulfurizing stage where sulfur is removed from the separated float fraction, and the desulfurized product obtained in the desulfurizing stage is repeatedly subjected to each stage of the leaching, floatation and desulfurizing in order so as to be recovered as concentrated gold-containing residue.
ASANO SATOSHI
TAKANO MASATOSHI
HIRAGORI SHINICHI
IDEGAMI ATSUSHI
| JP2006057133A | 2006-03-02 |
Noriyuki Tsujikawa
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