发明名称 |
Förfarande för behandling av jarosithaltiga rester |
摘要 |
<p>To work up jarosite-containing residues to give usable products, the jarosite-containing residues and zinc sulphide-containing concentrates are stirred in dilute sulphuric acid having a content of 40 to 100 g/l of free sulphuric acid in an autoclave at an oxygen partial pressure of at least 1000 kPa and a temperature of 130 to 170 DEG C, the iron and zinc content of the residue and of the zinc sulphide-containing concentrate are substantially brought into solution, separation into solution and solid is effected after the pressure has been let down, the solution is passed into the bleaching circulation of a zinc electrolysis with precipitation of the iron in the form of haematite, the elemental sulphur is separated off from the solid and the residue is transported for further use.</p> |
申请公布号 |
FI97481(B) |
申请公布日期 |
1996.09.13 |
申请号 |
FI19900004911 |
申请日期 |
1990.10.05 |
申请人 |
RUHR-ZINK GMBH |
发明人 |
VON ROEPENACK, ADOLF;BOEHMER, WINFRIED;GRIMM, HEINER |
分类号 |
B03B9/04;B09B3/00;C01B17/02;C01B17/06;C22B;C22B3/00;C22B3/08;C22B7/00;C22B9/02;C22B19/20;C22B19/30;C25C1/00;C25C1/16;(IPC1-7):C22B3/08 |
主分类号 |
B03B9/04 |
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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