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| Study on Pressure Leaching Technology for Enrichment of Precious Metals from Fine-Grained Alloys |
| Received:March 22, 2021 Revised:April 13, 2021 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.09.011 |
| KeyWord:fine alloy; pressure leaching; enrichment; precious metals |
| Author | Institution |
| OU Xiao-jian |
金川集团股份有限公司 镍钴资源综合利用国家重点实验室 甘肃金昌 |
| LI Quan |
金川集团股份有限公司 镍钴资源综合利用国家重点实验室 甘肃金昌 |
| ZHANG Jian-ling |
金川集团股份有限公司 镍钴资源综合利用国家重点实验室 甘肃金昌 |
| GUO Jin-quan |
金川集团股份有限公司 镍钴资源综合利用国家重点实验室 甘肃金昌 |
| MA Lei |
金川集团股份有限公司 镍冶炼厂 |
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| Abstract: |
| Nickel, copper and cobalt in fine-grained alloy by magnetic separation of nickel concentrate were leached under normal pressure and high pressure, and SiO2 was separated by high-pressure alkaline leaching, which realized separation and enrichment of precious and base metals in fine-grained alloys. Under the optimum conditions, recovery rate of nickel and cobalt is ≥99%, desilication rate is 80% above, whole process slag rate is 0.6%—0.8%, recovery rate of precious metals is ≥99%, and precious metals can be enriched more than 100 times. |
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