<p>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.</p>
申请公布号
EP0929713(A1)
申请公布日期
1999.07.21
申请号
EP19970944016
申请日期
1997.10.07
申请人
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED;SCA GRAPHIC RESEARCH AB
发明人
CUTTS, PAUL, KENNETH;GREEN, MATTHEW, JAMES;DREHMER, BO, GUNNAR;ERIKSSON, INGER, VIKTORIA;JOHANSSON, HANS, OLOV