| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To leach a copper and a gold in copper sulfide ore at high leaching ratio only by leaching the copper sulfide ore with chloride bath and using only the air without using the special oxidizing agent. <P>SOLUTION: The method for recovering various metals from the ore comprises: (1) a copper leaching process (CL) where the raw material is charged into the first oxidizing water solution containing cupric chloride, ferric chloride, 7g/L of hydrochloric acid, and sodium-bromide to obtain the leaching solution containing monovalent copper-ion and bivalent copper-ion; (2) a solid/liquid separating process where the separation of the solid and the liquid is performed; (3) an air-oxidizing process (OX) where the air is injected into the solution after separating the solid and the liquid, and the cuprous ion is oxidized into the cupric ion and the iron leached from the raw material in the (1) process is oxidized and simultaneously, impurities extracted from the raw material with the (2) process, are precipitated; (4) a copper-extracting process (CEX) where: after the (3) process, the copper is recovered from the solution; and (5) a gold-recovering process (AL) where the residue separated with the (2) process, is added into the leaching solution with the same way as the (1) process to obtain the gold. In the (1) to (5) processes, the blowing of the air is performed under condition of lower than the atmospheric pressure and the temperature below the boiling point. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
