发明名称 |
METHOD FOR RECOVERING GOLD BY HALIDE LEACHING |
摘要 |
<p>The invention relates to a method for recovering gold in connection with the hydrometallurgical production of copper from a waste or intermediate product containing sulphur and iron that is generated in the leaching of the copper raw material. The recovery of both copper and gold occurs in a chloride environment. The gold contained in the waste or intermediate is leached by means of divalent copper, oxygen and alkali bromide in a solution of copper (II) chloride and alkali chloride, in conditions where the oxygen-reduction potential is a maximum of 650 mV and the pH a minimum of 0.5. The bromide accelerates the dissolution of the gold.</p> |
申请公布号 |
EP1984531(A1) |
申请公布日期 |
2008.10.29 |
申请号 |
EP20070704804 |
申请日期 |
2007.02.09 |
申请人 |
OUTOTEC OYJ |
发明人 |
HAAVANLAMMI, LIISA;HYVAERINEN, OLLI;TIIHONEN, MARIKA;TONTTI, REIJO |
分类号 |
C22B11/00;C22B3/10;C22B15/00 |
主分类号 |
C22B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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