发明授权
- 专利标题: Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material
- 专利标题(中): 从钨轴承材料回收钨,钪,铁和锰
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申请号: US838482申请日: 1986-01-24
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公开(公告)号: US4626280A公开(公告)日: 1986-12-02
- 发明人: Clarence D. Vanderpool , Martin B. MacInnis , Judith A. Ladd
- 申请人: Clarence D. Vanderpool , Martin B. MacInnis , Judith A. Ladd
- 申请人地址: CT Stamford
- 专利权人: GTE Products Corporation
- 当前专利权人: GTE Products Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: C01F17/00
- IPC分类号: C01F17/00 ; C01G45/12 ; C22B3/08 ; C22B3/28 ; C22B34/36 ; C22B47/00 ; C22B59/00 ; C22B3/00
摘要:
A process is disclosed for recovering tungsten, iron, and manganese from tungsten bearing material. The process involves digesting the material in a sulfur dioxide solution at a sufficient temperature for a sufficient time to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion solid containing the major portion of the tungsten which is separated from the digestion solution. The major portion of the scandium is extracted from the digestion solution with an organic consisting essentially of an extracting agent which is essentially a mixture of alkyl primary amines which are present in an amount sufficient to extract the major portion of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. After separation of the scandium containing organic from the raffinate, the organic is stripped of the scandium with hydrochloric acid which is then separated from the stripped organic. The raffinate is adjusted to a pH of at least about 3.5 with a base to precipitate the major portion of the iron and manganese which is separated from the resulting liquor. A sufficient amount of chlorine gas is contacted with an aqueous slurry of the precipitate at a sufficient temperature for a sufficient time to form a manganese containing solution containing the major portion of the manganese which was in the precipitate and a solid containing the major portion of the iron which was in the precipitate.
公开/授权文献
- US5973662A Analog spectrum display for environmental control 公开/授权日:1999-10-26
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