发明名称 |
PROCESS FOR RECOVERING AND RE-USING COBALT AND TUNGSTEN FROM REACTION LIQUORS |
摘要 |
<p>Process for recovering and re-using cobalt and tungsten from reaction liquors, in which said reaction liquors are treated: a) With an alkali-earth metal hydroxide in order to precipitate cobalt and tungsten, and the resulting precipitate is subsequently treated with a strong mineral acid in order to be able to dissolve the cobalt salt and separate it from H2WO4 precipitate; or b) With an alkali metal hydroxide in order to precipitate and separate Co(OH)2, and the resulting alkaline solution is then treated with an alkali-earth metal compound which is filtered and treated with a strong mineral acid in order to obtain H2WO4</p> |
申请公布号 |
CA2141892(A1) |
申请公布日期 |
1995.08.08 |
申请号 |
CA19952141892 |
申请日期 |
1995.02.06 |
申请人 |
NOVAOL S.R.L. |
发明人 |
GARDANO, ANDREA;STROLOGO, SAURO;FOA', MARCO |
分类号 |
C01G41/00;B01J23/90;B01J23/92;B01J23/94;B01J31/40;B01J38/00;B01J38/68;C01G51/00;C22B7/00;C22B23/02;C22B34/36;(IPC1-7):C22B34/36;C02F1/58;C22B3/44;C02F1/52 |
主分类号 |
C01G41/00 |
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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