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    Kaolin clay pigments, their preparation and use
    4.
    发明授权
    Kaolin clay pigments, their preparation and use 有权
    高岭土颜料，其制备及用途

    公开(公告)号：US06564199B1

    公开(公告)日：2003-05-13

    申请号：US09937671

    申请日：2001-12-20

    申请人： Robert J. Pruett ,  Jun Yuan ,  Harry Vincent Brown, Jr. ,  David O. Cummings

    发明人： Robert J. Pruett ,  Jun Yuan ,  Harry Vincent Brown, Jr. ,  David O. Cummings

    IPC分类号： C04B1404

    CPC分类号： C09C1/42 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  D21H19/40

    摘要： A paper coating pigment manufactured from kaolin crude containing minor amounts of minerals is used in lightweight coated and ultra-lightweight coated applications. The pigments comprise a phyllosilicate assemblage of minerals that yield a final pigment MgO content ranging between 0.04 to 0.3 weight percent and a K2O content ranging between 0.12 and 0.8 weight percent based on the dry weight of the kaolin crude. The mica in the pigment product is 1.0% to 6.7% by weight, and smectite is 1.2% to 9.1% by weight of the kaolin. The presence of these weight percentages can be identified by a shape factor of 15 or greater. The viscous clay content of the feed to produce the pigment product is between 70 and 100 weight percent based on the dry weight of the kaolin clay. The pigment has a shape factor ranging between 35 and 60 or greater, and greater than 80% by weight of the particle are less than 2 microns, and greater than 12% are less than 0.25 microns.

    摘要翻译： 由含有少量矿物质的高岭土原料制成的纸涂颜料用于轻质涂层和超轻质涂层应用。 颜料包括矿物的页硅酸盐组合物，其基于高岭土原油的干重，产生0.04-0.3重量％的最终颜料MgO含量和范围在0.12至0.8重量％之间的K 2 O含量。 颜料中的云母为1.0〜6.7重量％，绿土为高岭土的1.2〜9.1重量％。 这些重量百分比的存在可以通过15或更大的形状因子来识别。 用于生产颜料产品的进料的粘性粘土含量基于高岭土的干重为70-100重量％。 颜料具有35至60或更大的形状因子，并且大于80重量％的颗粒小于2微米，并且大于12重量％小于0.25微米。

    Preparation and use of high brightness kaolin pigments
    5.
    发明授权
    Preparation and use of high brightness kaolin pigments 失效
    高亮度高岭土颜料的制备和使用

    公开(公告)号：US06514333B1

    公开(公告)日：2003-02-04

    申请号：US09700027

    申请日：2000-11-09

    申请人： Jun Yuan ,  Vince H. Brown ,  Robert J. Pruett ,  William L. Garforth

    发明人： Jun Yuan ,  Vince H. Brown ,  Robert J. Pruett ,  William L. Garforth

    IPC分类号： C04B1404

    CPC分类号： C09C1/42 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/22 ,  C01P2006/60 ,  D21H19/40

    摘要： A novel clay pigment, the manufacture thereof and the use of the pigment in the coating of lightweight groundwood paper are disclosed. The kaolin clay particles initially have a shape factor between less than 10 and a particle size distribution where between 30 to 60% by weight is less than 2 microns and 20% by weight is less than 0.25 micron e.s.d. This clay is subjected to attrition grinding to produce clay particles having a shape factor between 13 and 18 and then classified to produce a particle size distribution where 80 to 90% by weight are less than 2 microns and 20% by weight are less than 0.25 micron. These pigments have a G.E. brightness ranging from 88 to 92; are deficient in ultra-fine particles; are fluid at a high solids concentration greater than 70%, and have a low shear Brookfield viscosity below 500 cps and a high shear Hercules viscosity of 18 dyne-cm above 200 rpm when using an “A” bob.

    摘要翻译： 公开了一种新型粘土颜料，其制造方法以及颜料在轻质磨木纸涂料中的应用。 高岭土最初具有小于10的形状因子和30至60重量％小于2微米的粒度分布，20重量％小于0.25微米e.s.d。 对该粘土进行磨磨研磨以产生形状因子为13至18的粘土颗粒，然后分级以产生其中80至90重量％小于2微米的颗粒尺寸分布，并且20重量％小于0.25微米 。 这些颜料具有G.E. 亮度从88到92; 缺乏超细颗粒; 是高固体浓度大于70％的流体，并且当使用“A”鲍勃时，具有低于500cps的低剪切布鲁克菲尔德粘度和高于200rpm的18dyne-cm的高剪切赫氏体粘度。

    Method for separating mixture of finely divided minerals and product thereof
    9.
    发明授权
    Method for separating mixture of finely divided minerals and product thereof 失效
    分离细分矿物的混合物及其制品的方法

    公开(公告)号：US6068693A

    公开(公告)日：2000-05-30

    申请号：US876523

    申请日：1997-06-16

    申请人： William L. Garforth ,  Robert J. Pruett ,  Dona L. Archer ,  Jun Yuan ,  Michael J. Garska ,  H. Vince Brown

    发明人： William L. Garforth ,  Robert J. Pruett ,  Dona L. Archer ,  Jun Yuan ,  Michael J. Garska ,  H. Vince Brown

    IPC分类号： B03B1/04 ,  B03B9/00 ,  B03D3/06 ,  C04B33/10 ,  C04B33/04 ,  C09C1/42

    CPC分类号： B03B1/04 ,  B03B9/00 ,  B03D3/06 ,  C04B33/10

    摘要： A method of enhancing the brightness and increasing the yield of a kaolin clay by optimizing the removal of the titania and mica impurities in the clay and the amount of clay remaining in the slurry is disclosed. The method is a selective flocculation process wherein the clay is blunged, dispersed, and conditioned before flocculation. In the flocculation step, a high molecular weight anionic polymer and a low molecular weight anionic polymer, such as sodium polyacrylate, are added to the slurry after the conditioning process, whereby the titania-mica enriched flocs are separated from the suspension which is enriched with kaolin. This final kaolin product has titania levels ranging from 0.1% to 0.5%, a reduced mica level, a high usable product yield, and a brightness greater than 89.5 and at least 91.5.

    摘要翻译： 公开了通过优化粘土中二氧化钛和云母杂质的去除以及浆料中剩余的粘土的量来提高高岭土的亮度和提高产量的方法。 该方法是选择性絮凝过程，其中粘土在絮凝之前被白化，分散和调节。 在絮凝步骤中，在调节过程之后，将高分子量阴离子聚合物和低分子量阴离子聚合物（例如聚丙烯酸钠）加入到浆料中，由此将富含二氧化钛 - 云母的絮凝物与富集的悬浮液分离 高岭土 该最终的高岭土产品具有0.1％至0.5％的二氧化钛含量，降低的云母水平，高可用产物收率以及大于89.5和至少91.5的亮度。