发明名称 |
Process for treating ore having recoverable metal values including arsenic containing components |
摘要 |
Recovery of a precious metal value from refractory carbonaceous and sulfidic ores, concentrates or tailings which also include arsenic-containing components is improved by roasting the ore or ore concentrate in an oxygen-enriched gaseous atmosphere having an initial oxygen content from about 25 percent (by volume) to about 65 percent (by volume) while maintaining a reaction temperature of less than about 600 degrees Celsius during the roasting and while maintaining a minimum amount of iron to react with arsenic and for forming ferricarsenate; thereafter recovering a thus-roasted ore as calcine, whereby the calcine is amenable to recovery of precious metal values in it; gold ores are preferred candidate ores. |
申请公布号 |
ZA9202633(B) |
申请公布日期 |
1993.10.11 |
申请号 |
ZA19920002633 |
申请日期 |
1992.04.10 |
申请人 |
METALLGESELLSCHAFT AKTIENGESELLSCHAFT |
发明人 |
ANTHONY L HANNAFORD;K MARC LE VIER;RENE R FERNANDEZ;GOPALAN RAMADORAI;ARNO FITTING;GURUDAS SAMANT;BODO PEINEMANN;GEBHARD BANDEL;HANS KOFALCK |
分类号 |
C22B1/10 |
主分类号 |
C22B1/10 |
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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