发明名称 |
Method for selectively removing antimony and bismuth from sulphuric acid solutions |
摘要 |
The present invention is concerned with a method for selectively removing antimony and bismuth from an impure sulphuric acid solution containing at least 50 g/L of acid and some concentration of ferric ion (for example copper refinery electrolyte), is disclosed. The method involves contacting the impure solution with a sufficient quantity of finely divided metallic copper so as to prereduce all ferric ion present in the solution to the ferrous oxidation state. The prereduced solution is then contacted with a chelating resin. The method avoids the deleterious loading of ferric iron onto the ion exchange resin and prevents the return of excessive amounts of chloride ion with the purified electrolyte.
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申请公布号 |
US5366715(A) |
申请公布日期 |
1994.11.22 |
申请号 |
US19930138024 |
申请日期 |
1993.10.19 |
申请人 |
THE UNIVERSITY OF BRITISH COLUMBIA |
发明人 |
DREISINGER, DAVID B.;LEONG, BRENNA J. Y. |
分类号 |
B01D15/00;B01D15/04;C01B17/90;C01G25/00;C01G30/00;C22B3/42;C22B30/02;C22B30/06;(IPC1-7):C01B17/90;C02F1/42;C25C1/14 |
主分类号 |
B01D15/00 |
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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