发明名称 |
Recovering of gold and silver from an aqueous solution containing cyanic compounds of gold and silver. |
摘要 |
<p>A method of recovering gold and silver efficiently and almost completely from an aqueous solution containing cyanic compounds of gold and silver and which comprises adjusting the pH of the aqueous solution containing cyanic' compounds of gold and silver to 6.0 or less, preferably to pH 3.0 - 5.0, by adding mineral acid, such as sulfuric acid of hydrochloric acid, preferably together with a small amount of active carbon, and subsequently passing the aqueous solution through an active carbon bed, preferably pretreated with mineral acid.</p> |
申请公布号 |
EP0139056(A1) |
申请公布日期 |
1985.05.02 |
申请号 |
EP19830306447 |
申请日期 |
1983.10.24 |
申请人 |
SUMITOMO METAL MINING COMPANY LIMITED |
发明人 |
OGASA, TADAYOSHI;KONDO, FUMIO |
分类号 |
C22B11/00;C01G5/00;C01G7/00;C22B11/08;(IPC1-7):C22B11/08 |
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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