发明名称 |
Separation of solids from aqueous suspensions containing cellulosic fibers and fines |
摘要 |
Cellulosic fines and cellulosic fibers are separated from a suspension containing the fines, the fibers and hydrophobic materials by screening the suspension to remove the fibers, 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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申请公布号 |
US6248207(B1) |
申请公布日期 |
2001.06.19 |
申请号 |
US19990254950 |
申请日期 |
1999.05.13 |
申请人 |
CIBA SPECIALTY CHEMICALS WATER TREATMENT LIMITED;SCA GRAPHIC RESEARCH AB |
发明人 |
CUTTS PAUL KENNETH;GREEN MATTHEW JAMES;DREHMER BO GUNNAR;ERIKSSON INGER VIKTORIA;JOHANSSON HANS OLOV |
分类号 |
D21B1/32;D21C5/02;D21F1/66;(IPC1-7):D21H11/14;D21B1/08 |
主分类号 |
D21B1/32 |
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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