发明授权
- 专利标题： Polymers containing phosphonic acid groups for the treatment of red mud in the Bayer process
- 专利标题（中）： 含有膦酸基团的聚合物用于拜耳法处理红泥
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申请号： US523993申请日： 1995-09-05
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公开(公告)号： US5534235A公开(公告)日： 1996-07-09
- 发明人: Peter E. Reed , Robert P. Mahoney
- 申请人： Peter E. Reed , Robert P. Mahoney
- 申请人地址： IL Naperville
- 专利权人： Nalco Chemical Company
- 当前专利权人： Nalco Chemical Company
- 当前专利权人地址： IL Naperville
- 主分类号： B01D21/00
- IPC分类号： B01D21/00 ; C01F7/00
摘要：
The invention comprises a process for improved flocculation of Bayer process red mud-containing slurry. The improvement comprises adding to the red mud-containing liquor a phosphonic acid polymer optionally in addition to the conventional flocculant. The polymer is added to the red mud-containing liquor in an amount sufficient to reduce the concentration of suspended solids in the supernatant phase and/or increase the rate of sedimentation.
公开/授权文献
- US5097542A Bathing chair 公开/授权日：1992-03-24
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