发明名称 |
A METHOD FOR PRECIPITATING IRON FROM A ZINC SULPHATE SOLUTION AS HEMATITE |
摘要 |
<p>This invention relates to a method for the removal of iron as hematite from a zinc sulphate solution in atmospheric conditions during the electrolytic preparation of zinc. According to the method, the pH of the iron-containing solution is adjusted to a value of at least 2.7, oxygen-containing gas is fed into the solution and part of the hematite thus formed is recirculated to the precipitation stage.</p> |
申请公布号 |
EA005959(B1) |
申请公布日期 |
2005.08.25 |
申请号 |
EA20040000563 |
申请日期 |
2002.12.03 |
申请人 |
OUTOKUMPU OYJ |
发明人 |
LANTINEN, MARKO;LEHTINEN, LEENA;TAKALA, HEIKKI |
分类号 |
C01G49/06;C01G9/06;C22B3/44;C22B23/00;(IPC1-7):C22B3/44 |
主分类号 |
C01G49/06 |
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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