发明名称 |
FOERFARANDE FOER TILLVARATAGNING AV SILVER FRAON ZINKVERKSSINTER OCH NEUTRAL- ELLER SVAGSYRAEXTRAKTIONSRESTER MED TIOUREA. |
摘要 |
<p>A process for the recovery of silver from zinc calcines, or neutral or low acid leach residues, is disclosed. The process comprises the steps of leaching a silver containing zinc calcine or a neutral or low acidic sulphate solution containing from 0.1-20 g/l thiourea at 30-85 DEG C and pH 1-5 to solubilize more than 85% of the silver, and recovering the solubilized silver by adsorption onto activated carbon, or an ion-exchange resin, or by cementation on iron or zinc dust.</p> |
申请公布号 |
FI873665(A0) |
申请公布日期 |
1987.08.25 |
申请号 |
FI19870003665 |
申请日期 |
1987.08.25 |
申请人 |
NORANDA INC. |
发明人 |
ROSATO, LUCIA;ISMAY, ARNALDO;BLAIS, MIREILLE |
分类号 |
C01G5/00;C22B11/00;(IPC1-7):C22B/ |
主分类号 |
C01G5/00 |
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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