发明名称 |
PROCESS FOR RECOVERING ARSENIC FROM ACIDIC AQUEOUS SOLUTION |
摘要 |
A process for the recovery of arsenic trioxide from acid solutions, particularly the aqueous acid effluent produced by a gas-washing process in the pyrometallurgy of copper sulfide ores is provided. Generally, the process comprises concentrating the acid solution in one or more evaporators in series; crystallizing arsenic contained in the concentrated solution as arsenic trioxide crystals; filtering the crystallized solution to obtain a solid phase comprising impure arsenic trioxide crystals; and purifying the solid phase to obtain a purified crystal product comprising arsenic trioxide. The process produces a commercially salable arsenic trioxide product without producing any solid or liquid residues subject to special handling or treatment regulations.
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申请公布号 |
CA2431403(C) |
申请公布日期 |
2010.06.15 |
申请号 |
CA20012431403 |
申请日期 |
2001.12.14 |
申请人 |
BARRICK GOLD CORPORATION |
发明人 |
ANDINA, JORGE BALANDA;CISTERNAS, HECTOR GALLEGOS;VIDELA, JOSE MENDOZA |
分类号 |
C01G28/00;C02F1/04;B01D1/26;B01D7/02;B01D9/02;C01G;C02F1/02;C02F1/52;C02F1/62;C02F1/66;C22B3/44;C22B30/04 |
主分类号 |
C01G28/00 |
代理机构 |
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主权项 |
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地址 |
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