发明名称 |
Extraction of tungsten from spent or scrap catalyst materials |
摘要 |
A spent or scrap tungsten-containing, aluminosilicate catalyst material is blended with a silicate-containing, tungsten-bearing ore concentrate in amounts such that at least about 2.0% by weight of the total tungsten values in the mixture are present in the catalyst material, and then digested with an alkaline solution, e.g., sodium carbonate, under pressure and at an elevated temperature for a period of time sufficient to extract substantially all of the tungsten values from the mixture components. The presence of the catalyst material substantially suppresses the dissolution of silica in the leach liquor.
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申请公布号 |
US4508701(A) |
申请公布日期 |
1985.04.02 |
申请号 |
US19830480735 |
申请日期 |
1983.03.31 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
GODDARD, JOHN B.;JOHNSON, WILLIAM N. |
分类号 |
C01G41/00;C22B7/00;C22B34/36;(IPC1-7):C01G41/00 |
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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