发明名称 |
WERKWIJZE VOOR HET WINNEN VAN ZINK UIT EEN IJZER BEVATTENDE ZINKSULFAATOPLOSSING. |
摘要 |
<p>1322745 Purifying jarosite DET NORSKE ZINKKOMPANI AS 2 Oct 1970 [2 Oct 1969] 46854/70 Heading C1A Jarosite residue containing zinc ferrites and/or colloidal iron hydroxide and/or other colloidal material is leached with aq. H 2 SO 4 to dissolve the zinc ferrites and/or flocculate the colloidal material. The H 2 SO 4 may be added to provide a final concn. of 10-60 g/l. liquid. The temp. of the leaching process may be 50-95‹ C. The H 2 SO 4 may be added to the supernatant liquor or to the residue in slurry form. The solid content of the slurry may be 350-450 g/l. The residue may have been obtained by partially neutralizing to a pH of 1À5 with roasted zinc ore in the presence of Na, K, and/or NH 4 ions, a Fe/Zn soln. prepared by H 2 SO 4 acid treatment at 95‹ C. of a leach residue from neutral acid leaching a roasted zinc ore in dil. H 2 SO 4 .</p> |
申请公布号 |
NL173185(C) |
申请公布日期 |
1983.12.16 |
申请号 |
NL19700014534 |
申请日期 |
1970.10.02 |
申请人 |
DET NORSKE ZINKKOMPANI A/S TE ODDA, NOORWEGEN. |
发明人 |
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分类号 |
C01G9/06;C01G49/14;C22B3/00;C22B3/08;C22B19/00;(IPC1-7):22B19/22 |
主分类号 |
C01G9/06 |
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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