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    Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses therefor
    2.
    发明授权
    Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses therefor 失效
    使用碳酸钠和酸的混合物的稳定碳酸钙组合物及其用途

    公开(公告)号：US5647902A

    公开(公告)日：1997-07-15

    申请号：US546493

    申请日：1995-10-20

    申请人： Kuan-Ting Wu

    发明人： Kuan-Ting Wu

    IPC分类号： C01B32/60 ,  C01F11/18 ,  C09C1/02 ,  C09C3/10 ,  D21H17/67 ,  D21H17/69

    CPC分类号： C09C1/021 ,  C01F11/185 ,  C09C3/10 ,  C01P2004/30 ,  C01P2006/22 ,  C01P2006/60

    摘要： An improved form of calcium carbonate which is acid resistant to enable its use as a filler material in the making of neutral to weakly acid paper, and a process for producing this acid resistant calcium carbonate are provided. This acid resistant calcium carbonate comprises a mixture of at least about 0.1 percent, based on the dry weight of the calcium carbonate, of sodium carbonate, together with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of a mixture of weak acids in admixture with the calcium carbonate.

    摘要翻译： 提供耐酸性的改进形式的碳酸钙，以使其能够用作制备中性至弱酸性纸的填料，以及制备该耐酸性碳酸钙的方法。 该耐酸性碳酸钙包括基于碳酸钙的干重至少约0.1％的碳酸钠，以及基于碳酸钙的干重至少约0.1％的混合物 的弱酸与碳酸钙混合。

    Method for producing high opacifying kaolin pigment
    3.
    发明授权
    Method for producing high opacifying kaolin pigment 失效
    高不透明高岭土颜料的制备方法

    公开(公告)号：US5371051A

    公开(公告)日：1994-12-06

    申请号：US172552

    申请日：1993-12-23

    申请人： William H. Pope ,  Michael W. Ginn ,  R. Brock McNeely

    发明人： William H. Pope ,  Michael W. Ginn ,  R. Brock McNeely

    IPC分类号： C09C1/42 ,  C04B33/02

    CPC分类号： C09C1/42 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/60 ,  C01P2006/80 ,  C01P2006/90

    摘要： A method for producing calcined kaolin pigments of high opacifying properties and low abrasion. A kaolin crude is selected having a G.E. brightness in the range of 70 to 80, a titania content of 2.0 to 3.0% by weight, less than 2% iron expressed as Fe.sub.2 O.sub.3, and a particle size distribution such that at least 88% by weight of the particles of said crude are of less than 2 .mu.m E.S.D.. The crude is blunged with water, and the resultant slurry degritted to form an aqueous slurry having at least 65% by weight solids. The slurry is centrifuged and a fraction recovered having over 65% solids, and in which at least 92% by weight of the particles are of less than 2 .mu.m. The recovered fraction is dried to less than 1% moisture, and pulverized to break up agglomerates. The pulverized fraction is then calcined by heating same to 1450.degree. to 1600.degree. F. after which the calcined kaolin is milled to yield a product having a G.E. brightness of 79 to 81 and an Einleiner abrasion of not mere than 2.5 mg wt loss.

    摘要翻译： 一种制备高不透明性和低磨损性的煅烧高岭土颜料的方法。 选择具有G.E.的高岭土原油。 亮度在70至80的范围内，二氧化钛含量为2.0至3.0重量％，小于2重量％的以Fe 2 O 3表示的铁，以及粒度分布，使得至少88重量％的所述原油颗粒为 小于2微米的ESD，粗品用水闪烁，并将所得的浆料磨碎，形成具有至少65重量％固体的含水浆料。 将浆料离心，回收具有超过65％固体的部分，其中至少92重量％的颗粒小于2μm。 将回收的馏分干燥至小于1％的水分，并粉碎以分散附聚物。 然后将粉碎的馏分通过加热煅烧至1450℃至1600°F，之后将煅烧高岭土研磨，得到具有G.E.的产物。 亮度为79〜81，Einleiner磨损不超过2.5mg wt。

    Method for filtering mineral slurries
    5.
    发明授权
    Method for filtering mineral slurries 失效
    矿物浆料过滤方法

    公开(公告)号：US5223155A

    公开(公告)日：1993-06-29

    申请号：US824032

    申请日：1992-01-22

    申请人： Michael W. Ginn ,  Gary L. Cobb ,  Lawrence E. Broxton ,  Kelly R. McNeely

    发明人： Michael W. Ginn ,  Gary L. Cobb ,  Lawrence E. Broxton ,  Kelly R. McNeely

    IPC分类号： B01D29/05 ,  B01D29/39 ,  B01D37/03 ,  B01D39/20 ,  B28C1/02

    CPC分类号： B28C1/02 ,  B01D29/05 ,  B01D29/39 ,  B01D37/03 ,  B01D39/2068

    摘要： An improvement is disclosed which is applicable to the method for filtering an aqueous mineral slurry by flowing the slurry through a ceramic filter plate which is characterized by a porous support layer and an overlying porous filtration layer, the pore sizes in said filtration layer being in the range of from about 1 to 3 .mu.m, and the flow through the filter plate being from the filter layer side toward the base layer, and being effected by establishing a fluid pressure differential across the said filter plate by applying suction to the the porous support layer. The improvement facilitates effective discharge of the filter cake from the plate which accumulates upon the porous filtration layer. According to such improvement the suction is extinguished and the support layer side of the plate is subjected to one ore more positive water pressure pulses to effect a transient reverse flow through the plate. Via the uniform pore structure this generates a uniform back pressure and a lubricating film of water at the interface between the filtration layer and the filter cake. Oscillations or vibrations are applied to the surface of the porous filtration layer to facilitate separation of the filter cake.

    摘要翻译： 公开了一种改进，其适用于通过使浆料流过陶瓷过滤板来过滤含水矿物浆料的方法，陶瓷过滤板的特征在于多孔支撑层和上覆的多孔过滤层，所述过滤层中的孔径在 范围为约1至3μm，并且通过过滤板的流量从过滤层侧朝向基底层，并且通过在多孔载体上施加吸力来在所述过滤板上形成流体压差来实现 层。 该改进有助于从积聚在多孔过滤层上的板的有效排出滤饼。 根据这样的改进，抽吸被消除，并且板的支撑层侧面经受一个或多个正的水压脉冲，以产生通过板的瞬时反向流动。 通过均匀的孔结构，在过滤层和滤饼之间的界面处产生均匀的背压和水的润滑膜。 振荡或振动被施加到多孔过滤层的表面以便于滤饼的分离。

    Method for beneficiating discolored kaolin to produce high brightness coating clay
    7.
    发明授权
    Method for beneficiating discolored kaolin to produce high brightness coating clay 失效
    漂白高岭土生产高亮度涂层粘土的方法

    公开(公告)号：US5685900A

    公开(公告)日：1997-11-11

    申请号：US546398

    申请日：1995-10-18

    申请人： Jun Yuan ,  Ben E. Everett ,  Windell R. Andrews

    发明人： Jun Yuan ,  Ben E. Everett ,  Windell R. Andrews

    IPC分类号： B03B9/00 ,  B03D3/06 ,  C04B33/10 ,  C09C1/42 ,  C04B33/04

    CPC分类号： C04B33/10 ,  B03B9/00 ,  B03D3/06 ,  C09C1/42 ,  C01P2004/62 ,  C01P2006/22 ,  C01P2006/60

    摘要： A method for beneficiating a low brightness fine particle size discolored kaolin crude to produce a high brightness coating clay. By combining the two beneficiating techniques of selective flocculation and ozonation, a synergistic phenomena occurs and a clay product of superior brightness and whiteness can be obtained from fine discolored clays that cannot be achieved by beneficiation with either process singularly. By passing the flocced clay through ozonation, the flocculant polymer left in the clay can be completely destroyed.

    摘要翻译： 一种用于选择低亮度细粒度变色高岭土粗品以产生高亮度涂层粘土的方法。 通过结合选择性絮凝和臭氧化的两种选择性技术，发生协同现象，并且可以通过奇异的任意一种方法的选矿无法实现的精细变色粘土获得优异的亮度和白度的粘土产品。 通过使絮状粘土通过臭氧化，残留在粘土中的絮凝剂聚合物可以被完全破坏。

    Treatment of waste paper
    8.
    发明授权
    Treatment of waste paper 失效
    处理废纸

    公开(公告)号：US5683590A

    公开(公告)日：1997-11-04

    申请号：US644554

    申请日：1996-05-10

    申请人： Jonathan Stuart Phipps

    发明人： Jonathan Stuart Phipps

    IPC分类号： C02F11/00 ,  C02F11/06 ,  C02F11/08 ,  D21B1/34 ,  D21C5/02 ,  D21C11/14 ,  C02F1/72

    CPC分类号： D21C11/14 ,  C02F11/08 ,  D21C5/025 ,  Y02W30/648 ,  Y10S210/928

    摘要： A process for recovering inorganic material from an effluent suspension produced in the treatment of waste paper. The effluent suspension, in the form of an aqueous suspension containing at least 2% by weight of dry solids, is contacted with an oxygen-containing gas at an elevated temperature, and at an elevated pressure sufficient to keep the water component of the sludge in the liquid phase, for a time sufficient to effect substantially complete oxidation of the organic material in the suspension. The resulting product is dewatered and then resuspended in water, whereafter there is separated from the suspension water containing fine carbon particles in suspension to leave the desired inorganic material.

    摘要翻译： 从处理废纸中产生的流出物悬浮液中回收无机材料的方法。 以含有至少2重量％干固体的水悬浮液的形式的流出物悬浮液在升高的温度下与含氧气体接触，并且在足以将污泥的水分含量保持在的高压下 液相，足以实现悬浮液中有机材料的基本上完全氧化的时间。 将所得产物脱水，然后重悬浮在水中，然后与悬浮液中含有细小碳颗粒的悬浮水分离出留下所需的无机材料。