发明授权
- 专利标题： SEPARATION OF SOLIDS FROM AQUEOUS SUSPENSIONS
- 专利标题（中）： 分离固体物含水悬浮液
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申请号： EP97944016.1申请日： 1997-10-07
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公开(公告)号： EP0929713B1公开(公告)日： 2001-07-18
- 发明人: CUTTS, Paul, Kenneth , GREEN, Matthew, James , DREHMER, Bo, Gunnar , ERIKSSON, Inger, Viktoria , JOHANSSON, Hans, Olov
- 申请人： Ciba Specialty Chemicals Water Treatments Limited , SCA Graphic Research AB
- 申请人地址： P.O. Box 38, Low Moor Bradford, West Yorkshire BD12 0JZ GB
- 专利权人： Ciba Specialty Chemicals Water Treatments Limited,SCA Graphic Research AB
- 当前专利权人： Ciba Specialty Chemicals Water Treatments Limited,SCA Graphic Research AB
- 当前专利权人地址： P.O. Box 38, Low Moor Bradford, West Yorkshire BD12 0JZ GB
- 优先权： GB9620887 19961007
- 国际公布： WO9815686 19980416
- 主分类号： D21C5/02
- IPC分类号： D21C5/02 ; D21F1/66 ; D21B1/32
摘要：
Cellulosic fines and cellulosic fibres are separated from a suspension containing the fines, the fibres and hydrophobic materials by screening the suspension to remove the fibres, and then subjecting the resultant filtrate to dispersed air flotation in the presence of calcium and generally a separation aid to form an upper Reject fraction in which the hydrophobic material is concentrated and a lower Accept fraction in which the cellulosic fines are concentrated.
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