发明名称 |
Nitric acid process for ferric sulfate production |
摘要 |
Ferric sulfate is produced by treating ferric ammonium sulfate, ammonium jarosite or a similar iron complex with nitric acid. The ferric ammonium sulfate or ammonium jarosite can be formed by treating a sulfuric acid leaching solution, e.g., a solution used to leach zinc or copper ore concentrate, with a solution of ammonium nitrate. Thereafter, upon addition of dilute nitric acid at a temperature of about 60 DEG C., ferric sulfate forms and is recovered.
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申请公布号 |
US5624650(A) |
申请公布日期 |
1997.04.29 |
申请号 |
US19960605629 |
申请日期 |
1996.02.22 |
申请人 |
ENVIRONCHIP TECHNOLOGIES, INC. |
发明人 |
MCEWAN, THOMAS D.;PFAFFENBERGER, WILLIAM E. |
分类号 |
C01G49/14;(IPC1-7):C01G49/00 |
主分类号 |
C01G49/14 |
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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