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    Silica composition
    5.
    发明公开
    Silica composition 审中-公开
    Silikazusammensetzung

    公开(公告)号：EP2592185A1

    公开(公告)日：2013-05-15

    申请号：EP13154819.0

    申请日：2008-01-16

    申请人： BIM KEMI AB

    发明人： Wassenius, Helena ,  Wållberg, Peter ,  Hassler, Thord ,  Kittelsen, Tom

    IPC分类号： D21C9/08 ,  D21H17/68 ,  D21C3/22 ,  C01B33/24 ,  D21C5/02 ,  D21C9/147

    CPC分类号： D21H17/68 ,  D21C3/226 ,  D21C5/027 ,  D21C9/083 ,  D21C9/147 ,  D21C9/163 ,  D21H17/64 ,  D21H21/02 ,  D21H21/52 ,  Y02W30/648

    摘要： The invention relates to a composition comprising a mixture of a silica compound and an alkaline earth metal oxide or alkaline earth metal hydroxide in an aqueous solvent, characterised in that the silica compound and the alkaline earth metal oxide or alkaline earth metal hydroxide together form the major part of the non-solvent matter of the composition. The invention also relates to a method for producing said composition comprising adding an alkaline earth metal oxide or alkaline earth metal hydroxide and a silica compound to an aqueous medium to form an aqueous mixture, and allowing said aqueous mixture to stand. The invention also relates to a method for treating cellulosic fibres using said composition.

    摘要翻译： 本发明涉及在水性溶剂中包含二氧化硅化合物和碱土金属氧化物或碱土金属氢氧化物的混合物的组合物，其特征在于二氧化硅化合物和碱土金属氧化物或碱土金属氢氧化物一起形成主要 部分非溶剂物质的组成。 本发明还涉及一种生产所述组合物的方法，其包括向碱性介质中加入碱土金属氧化物或碱土金属氢氧化物和二氧化硅化合物以形成水性混合物，并使所述含水混合物静置。 本发明还涉及使用所述组合物处理纤维素纤维的方法。

    Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers
    8.
    发明公开
    Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers 失效
    Verfahren zur Entfernung von polychlorierten Dibenzodioxinen，polychlorierten Dibenzofuranen und Klebrigem vonSekundärfasern。

    公开(公告)号：EP0480476A1

    公开(公告)日：1992-04-15

    申请号：EP91117469.6

    申请日：1991-10-14

    申请人： KIMBERLY-CLARK CORPORATION

    发明人： Blaney, Carol Ann ,  Hossain, Shafi Ul

    IPC分类号： D21C5/02 ,  B01D11/02 ,  D21B1/32 ,  D21C9/08

    CPC分类号： D21C9/083 ,  B01D11/0203 ,  D21C5/02 ,  D21C9/08 ,  Y02W30/648 ,  Y10S162/04

    摘要： A process for removing stickies and/or PCDD's and PCDF's from cellulose-containing fibers such as waste paper is provided. The process comprises contacting the fibers with supercritical or near supercritical carbon dioxide or propane for a period of time sufficient to extract a substantial portion of the stickies and/or PCDD's and PCDF's without substantially damaging the fibers. Extraction efficiencies of up to 95% of PCDD's or PCDF's and about 70% to 95% of stickies have been achieved with the technique.

    摘要翻译： 提供了从含纤维素纤维如废纸中去除粘性物质和/或PCDD和PCDF的方法。 该方法包括使纤维与超临界或近超临界二氧化碳或丙烷接触足以提取大部分粘性物质和/或PCDD和PCDF的时间，而不会基本上损伤纤维。 该技术已经达到高达95％的PCDD或PCDF的提取效率和约70％至95％的粘度。

    PROCESS FOR THE TREATMENT OF A PAPER PULP
    10.
    发明公开
    PROCESS FOR THE TREATMENT OF A PAPER PULP 有权
    法废纸纸浆的治疗

    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.