发明授权
US4668486A Method for removing organic substances from caustic aluminate liquors
失效
从苛性铝酸盐液中除去有机物质的方法
- 专利标题： Method for removing organic substances from caustic aluminate liquors
- 专利标题（中）： 从苛性铝酸盐液中除去有机物质的方法
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申请号： US847634申请日： 1986-04-03
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公开(公告)号： US4668486A公开(公告)日： 1987-05-26
- 发明人: Neil Brown , Gerhard Kudermann , Manfred Fuchs
- 申请人： Neil Brown , Gerhard Kudermann , Manfred Fuchs
- 申请人地址： DEX
- 专利权人： Vereinigte Aluminium-Werke Atkiengesellschaft
- 当前专利权人： Vereinigte Aluminium-Werke Atkiengesellschaft
- 当前专利权人地址： DEX
- 优先权： DEX3512404 19850404
- 主分类号： C01F7/47
- IPC分类号： C01F7/47 ; C01F7/06
摘要：
The present invention is directed to a method for removing organic substances from aluminate liquors of the Bayer process. The method comprises the steps of contacting the liquor with an oxygen containing gas under elevated pressure in the presence of metallic ions acting as a catalyst to oxidize the organic substances, precipitating the metallic ions jointly with aluminum hydroxide, separating the precipitate from the oxidized liquor and recycling the precipitated aluminum hydroxide containing the metallic ions into the oxidation step as a catalyst carrier.