发明名称 |
Fremgangsmate for utfelling av jern som hematitt fra en sinksulfatopplosning. |
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 |
NO20042419(A) |
申请公布日期 |
2004.06.10 |
申请号 |
NO20040002419 |
申请日期 |
2004.06.10 |
申请人 |
OUTOKUMPU OYJ |
发明人 |
LAHTINEN MARKO;TAKALA HEIKKI;LEHTINEN LEENA |
分类号 |
C01G49/06;C01G9/06;C22B3/44;C22B23/00;(IPC1-7):C01G49/06;C25C1/16 |
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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