METHOD FOR RECOVERING COPPER FROM SULFIDE ORE MATERIAL USING HIGH TEMPERATURE PRESSURE LEACHING, SOLVENT EXTRACTION AND ELECTROWINNING

摘要

PPROBLEM TO BE SOLVED: To provide a method for obtaining high metal recovery in processes where dilution is not required, in cases where, while Placer Dome's patented process is usable in many situations, it is desirable to reduce operating costs and/or metal-bearing ore at a particular site does not warrant such conditions. PSOLUTION: The method includes the following steps: (i) a step of providing a feed stream containing a copper-containing material; (ii) a step of pressure leaching the copper-containing feed stream to yield a copper-containing solution; and (iii) a step of recovering cathode copper from the copper-containing solution using solvent extraction and electrowinning without significantly diluting the copper-containing solution. PCOPYRIGHT: (C)2008,JPO&INPIT