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    Method for separating mixture of finely divided minerals
    1.
    发明授权
    Method for separating mixture of finely divided minerals 有权
    分离细分矿物的混合物的方法

    公开(公告)号：US07780779B2

    公开(公告)日：2010-08-24

    申请号：US11349216

    申请日：2006-02-08

    申请人： Michael J. Garska ,  Ismail Yildirum ,  Robert J. Pruett ,  Johnny W. Larimore

    发明人： Michael J. Garska ,  Ismail Yildirum ,  Robert J. Pruett ,  Johnny W. Larimore

    IPC分类号： C04B14/04

    CPC分类号： C09C1/42 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C01P2006/80

    摘要： The Rio Capim Kaolin deposit contains a lower bed of soft kaolin clay that averages 10 meters thick, and an upper bed of “hard” kaolin (“RCC hard kaolin”) that may be as thick as 6 to 8 meters. Due to their high impurity content fine particle size, cementetious nature, and high degree of particle aggregation, hard kaolins are difficult to process. Disclosed herein are compositions comprising kaolin having a particle size distribution such that at least about 90% of the kaolin has a particle size of less than 1 micron and a GE brightness of at least about 91, where the kaolin may be derived from a crude kaolin having a Fe2O3 content of at least about 1.0% by weight, and optionally comprises titania in an amount of at least about 1.5% by weight. Also disclosed herein are methods of refining the hard kaolins, such as RCC hard kaolins, by dispersing the kaolin with at least one anionic organic dispersant and at least one inorganic dispersant. Also disclosed are compositions comprising an aqueous kaolin slurry comprising the hard kaolin, such as an RCC hard kaolin, at least one anionic organic dispersant, and at least one inorganic dispersant. Also disclosed are products containing the refined kaolin, such as paints, paper coatings, and plastics.

    摘要翻译： 里约Capim高岭土沉积物含有平均厚度为10米的软质高岭土粘土床，以及厚度可达6至8米的“硬”高岭​​土（“RCC硬质高岭土”）上层床。 由于杂质含量高，细粒度大，粘结性好，颗粒聚集度高，硬质高岭土难以加工。 本文公开了包含高岭土的组合物，其具有使得至少约90％的高岭土具有小于1微米的粒度和至少约91的GE亮度的粒度分布，其中高岭土可以衍生自粗高岭土 具有至少约1.0重量％的Fe 2 O 3含量，并且任选地包含至少约1.5重量％的量的二氧化钛。 本文还公开了通过用至少一种阴离子有机分散剂和至少一种无机分散剂分散高岭土来精制硬质高岭土如RCC硬质高岭土的方法。 还公开了包含包含硬质高岭土的水性高岭土浆料如RCC硬质高岭土，至少一种阴离子有机分散剂和至少一种无机分散剂的组合物。 还公开了含有精制高岭土的产品，如油漆，纸张涂料和塑料。

    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。

    Kaolin clay pigments, their preparation and use
    10.
    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。