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    • 24. 发明授权
    • Method of treating polymers
    • 处理聚合物的方法
    • US07615258B2
    • 2009-11-10
    • US11631447
    • 2005-07-08
    • Gareth Ian NaylorAnne Flisher
    • Gareth Ian NaylorAnne Flisher
    • C08F2/50C08J3/28
    • C08F6/006C08J3/28Y10S524/916
    • A method of reducing unreacted monomer in a water-soluble or water swellable polymer comprising the steps, i) applying an ultraviolet initiator to the surface of the polymer and ii) irradiating the polymer with ultraviolet light, wherein the ultraviolet initiator is dissolved or dispersed in a liquid medium and in which the liquid medium comprises an organic compound. The method is useful for reducing in the amount of unreacted acrylamide in polyacrylamide. Also claimed is a liquid initiator composition comprising, i) an ultraviolet initiator, and ii) a liquid medium comprising an organic compound. The initiator system is useful for applying to the surface of a polymer, such as polyacrylamide, in the removal of unreacted monomer, such as acrylamide.
    • 一种降低水溶性或水溶胀性聚合物中未反应单体的方法,包括以下步骤:i)将紫外线引发剂施加到聚合物的表面,和ii)用紫外光照射聚合物,其中紫外线引发剂溶解或分散在 液体介质,其中液体介质包含有机化合物。 该方法可用于减少聚丙烯酰胺中未反应的丙烯酰胺的量。 还要求的是液体引发剂组合物,其包含i)紫外引发剂,和ii)包含有机化合物的液体介质。 引发剂体系可用于在除去未反应的单体如丙烯酰胺之类的聚合物如聚丙烯酰胺的表面上。
    • 26. 发明授权
    • Treatment of suspensions
    • 治疗悬浮液
    • US07252783B2
    • 2007-08-07
    • US10472788
    • 2002-04-02
    • Steven WeirJanine Marie GriffithSimon Paul Oldfield
    • Steven WeirJanine Marie GriffithSimon Paul Oldfield
    • C02F1/56
    • C02F1/56B01D21/01C02F2103/28Y10S524/922
    • A method of dewatering a suspension of solids in an aqueous medium, comprising introducing into the suspension a flocculating system, which flocculation system comprises, a) a substantially non-ionic water-soluble polymer and b) a cationic polymeric flocculant of intrinsic viscosity at least 4 dl/g, thereby causing the solids to flocculate, separating the flocculated from aqueous medium, characterized in that i) the components a) and b) are introduced into the suspension as an aqueous blend; or ii) component a) is a non-ionic polymer that has an average molecular weight of below 750,000 and components a) and b) are introduced into the suspension as an aqueous blend or separately. Also claimed is an aqueous composition comprising the substantially non-ionic water-soluble polymer and cationic polymer, method for making it and a composition comprising a blend of substantially anhydrous particles of component (a) and component (b). The method and novel composition are particularly suitable for dewatering aqueous suspensions such as sewage sludges.
    • 一种将固体悬浮液在水性介质中脱水的方法,包括将絮凝体系引入悬浮液中,所述絮凝体系包含:a)基本上非离子的水溶性聚合物,和b)至少具有特性粘度的阳离子聚合物絮凝剂 4dl / g,从而导致固体絮凝,从水性介质中分离絮凝物,其特征在于i)将组分a)和b)作为水性共混物引入悬浮液中; 或ii)组分a)是平均分子量低于750,000的非离子聚合物,并且组分a)和b)作为水性共混物或分开地引入到悬浮液中。 还要求保护的是包含基本上非离子水溶性聚合物和阳离子聚合物的水性组合物,其制备方法和包含基本上无水的组分(a)和组分(b)的混合物的组合物。 该方法和新型组合物特别适用于脱水水性悬浮液如污水淤泥。
    • 28. 发明授权
    • Flocculation of mineral suspensions
    • 矿物悬浮液的絮凝
    • US06979405B2
    • 2005-12-27
    • US10432300
    • 2001-11-16
    • Steven Weir
    • Steven Weir
    • B01D21/01C02F1/56
    • B01D21/01C02F1/56C02F2103/12C02F2103/16Y10S210/907
    • A method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising, a) a substantially non-ionic polymeric flocculant and b) an anionic polymeric flocculant, characterised in that, the substantially non-ionic polymeric flocculant is added to the suspension before the addition of the anionic polymeric flocculant. The method is useful for flocculating China clay suspensions, suspensions of s welling clays, calcium carbonate suspensions, titanium dioxide suspensions, suspensions of coal tailings, red mud and phosphate slimes etc.
    • 一种使含水矿物悬浮液脱水的方法,其包括向悬浮液中引入絮凝体系,所述絮凝体系包含a)基本上非离子的聚合物絮凝剂和b)阴离子聚合物絮凝剂,其特征在于将基本上非离子的聚合物絮凝剂加入到 在加入阴离子聚合物絮凝剂之前先进行悬浮。 该方法适用于絮凝中国粘土悬浮液,沉淀物悬浮液,碳酸钙悬浮液,二氧化钛悬浮液,尾矿悬浮液,红泥和磷酸盐泥浆等。
    • 30. 发明授权
    • Treatment of aqueous suspensions
    • 水悬浮液的处理
    • US07901583B2
    • 2011-03-08
    • US12644070
    • 2009-12-22
    • Philip McCollStephen Scammell
    • Philip McCollStephen Scammell
    • C02F11/14
    • B03D3/06C02F1/56C02F11/008C02F2103/10
    • A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved while retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting from a mineral processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
    • 其中包含具有分散的颗粒固体的水性液体的材料作为流体被转移到沉积区域,然后被允许静置和刚化,并且其中刚性化得到改善,同时在转移期间保持材料的流动性,通过与 材料是有效硬化量的水溶性聚合物的水溶液。 该方法特别适用于处理由矿物加工操作产生的尾矿下溢以及精细和粗尾矿馏分的共处理。 此外,在硬化步骤期间释放的液体具有高清晰度。