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    • 2. 发明申请
    • TREATMENT OF AQUEOUS SUSPENSIONS
    • 水处理悬浮液处理
    • US20100098493A1
    • 2010-04-22
    • US12644070
    • 2009-12-22
    • PHILIP McCollStephen Scammell
    • PHILIP McCollStephen Scammell
    • E02B8/02
    • 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 whilst 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.
    • 包含具有分散的颗粒固体的水性液体的材料作为流体转移到沉积区域,然后被允许静置和刚性化,并且在此过程中硬化得到改善,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。
    • 4. 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。
    • 7. 发明授权
    • Production of alumina
    • 生产氧化铝
    • US06168767A
    • 2001-01-02
    • US09229544
    • 1999-01-13
    • Roger WeltonPhilip McColl
    • Roger WeltonPhilip McColl
    • C01F702
    • C01F7/145C01P2004/61
    • A process of recovering alumina from a pregnant Bayer process liquor by crystallisation after adding to the liquor a crystallisation modifier characterised in that the crystallisation modifier comprises: (a) a polyalkoxylated non-ionic surfactant, (b) a surfactant, or precursor thereof, which is not a polyalkoxylated non-ionic surfactant and (c) water. In a further aspect of the invention the composition may contain water but preferably contains substantially no water. Preferred compositions for the crystallisation modifier for use in this process contain a surfactant blend which consists essentially only of the polyalkoxylated non-ionic surfactant (a) and the surfactant (b) or precursor thereof. The process consistently gives excellent improvement in crystal size without decreased yield. Specifically the process results in a reduction in the percentage of undersized crystals.
    • 在结晶改性剂中加入结晶改性剂后,通过结晶回收来自怀孕的拜耳法溶液的氧化铝的方法,其特征在于结晶改性剂包括:(a)聚烷氧基化非离子表面活性剂,(b)表面活性剂或其前体, 不是聚烷氧基化的非离子表面活性剂和(c)水。在本发明的另一方面,组合物可以含有水,但优选基本上不含水。 用于该方法的结晶改性剂的优选组合物含有基本上仅由聚烷氧基化非离子表面活性剂(a)和表面活性剂(b)或其前体组成的表面活性剂共混物。 该方法一致地提供了晶体尺寸的极好的改善,而没有降低的产率。 具体地说,该方法导致尺寸过小的晶体的百分比的降低。