公开(公告)号：EP2609249B1

公开(公告)日：2015-10-07

申请号：EP11746260.6

申请日：2011-08-23

申请人： Imerys Talc Europe

发明人： HAWKEN, Albert ,  BIZA, Peter

IPC分类号： D21C5/02 ,  D21C9/08 ,  D21D5/18 ,  D21H21/02 ,  D21B1/02

CPC分类号： D21C5/02 ,  D21C9/083 ,  D21H21/02 ,  Y02W30/648

公开(公告)号：EP2609249A1

公开(公告)日：2013-07-03

申请号：EP11746260.6

申请日：2011-08-23

申请人： Imerys Talc Europe

发明人： HAWKEN, Albert ,  BIZA, Peter

IPC分类号： D21C5/02 ,  D21C9/08 ,  D21D5/18 ,  D21H21/02 ,  D21B1/02

CPC分类号： D21C5/02 ,  D21C9/083 ,  D21H21/02 ,  Y02W30/648

摘要： The present disclosure relates to a process for the treatment of a paper pulp, wherein, in a first step, a composition of particles of lamellar silicate is added to said paper pulp, and in a second step, said paper pulp is passed through a centrifugation device chosen so as to separate a composition loaded with contaminants from said paper pulp, characterized in that said composition of particles of lamellar silicate comprises at least 20 wt.% of a first fraction of particles of lamellar silicate, named fine fraction, whose particles of lamellar silicate have an equivalent spherical diameter of between 0.5 μm and 7 μm, and at least 20 wt.% of a second fraction of particles of lamellar silicate, named coarse fraction, whose particles of lamellar silicate have an equivalent spherical diameter of between 7 μm and 30 μm.