公开(公告)号：US06315867B1

公开(公告)日：2001-11-13

申请号：US08960789

申请日：1997-10-30

申请人： David Robert Skuse ,  Shih-Ruey Thomas Chen ,  William Leonard Garforth ,  Gary F Matz

发明人： David Robert Skuse ,  Shih-Ruey Thomas Chen ,  William Leonard Garforth ,  Gary F Matz

IPC分类号： D21H1767

CPC分类号： D21H17/375 ,  D21H17/10 ,  D21H17/43 ,  D21H19/46 ,  D21H19/58

摘要： A method of dispersing a solid particulate material in an aqueous medium by addition to the aqueous medium of a dispersing agent wherein the solid particulate material is to be used as a filler or pigment in a sheet material which is required to come into contact with foodstuffs, wherein the dispersing agent is a composition comprising: (1) up to 0.25% by weight, based on the dry weight of the particulate solid material, of a water-soluble salt of a poly(acrylic acid) having a weight average molecular weight not greater than 20,000, and (2) from 0.02% to 1.5% by weight, based on the dry weight of the particulate solid material, of either (a) an anionic polyelectrolyte which comprises a water-soluble salt of a copolymer of acrylic acid with acrylamide; or (b) a water-soluble condensed phosphate salt.

摘要翻译： 通过添加到分散剂的水性介质中将固体颗粒材料分散在水性介质中的方法，其中所述固体颗粒材料用作需要与食品接触的片材中的填料或颜料， 其中所述分散剂是一种组合物，其包括：（1）基于所述颗粒固体材料的干重至多0.25重量％的重均分子量的聚（丙烯酸）的水溶性盐， 大于20,000，和（2）基于颗粒状固体材料的干重的0.02重量％至1.5重量％的（a）阴离子聚电解质，其包含丙烯酸与丙烯酸的共聚物的水溶性盐 丙烯酰胺 或（b）水溶性缩合磷酸盐。

公开(公告)号：US5713998A

公开(公告)日：1998-02-03

申请号：US388354

申请日：1995-02-14

申请人： Dickey S. Shurling, Jr. ,  Teresa Anderson Rhodes ,  Connie Carol Brown ,  Ronald Wayne Underwood ,  William Leonard Garforth ,  Anthony Allan May

发明人： Dickey S. Shurling, Jr. ,  Teresa Anderson Rhodes ,  Connie Carol Brown ,  Ronald Wayne Underwood ,  William Leonard Garforth ,  Anthony Allan May

IPC分类号： C09C1/42 ,  D21H17/68 ,  C04B14/04

CPC分类号： D21H17/68 ,  C09C1/42 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/60 ,  C01P2006/82 ,  C01P2006/90

摘要： An improvement is disclosed applicable to the method for producing a calcined kaolin by the steps of wet beneficiating a crude kaolin to form a slurry of the beneficiated kaolin; dewatering the slurry to form a substantially dry calciner feed; and calcining the feed at a temperature of at least 1450.degree. F. by passing a stream of hot gases through a calciner in which the kaolin feed is resident, whereby an exhaust stream of hot gases is generated which entrains quantities of partially calcined and hydrous kaolin pigment fines. The improvement, enabling useful application of the kaolin pigment fines, comprises recovering the kaolin pigment fines from the exhaust stream for use in papermaking. The fines can be recovered at a wet scrubber, and after being partially dewatered, shipped directly as a product slurry to the paper maker.

摘要翻译： 公开了一种改进，其适用于煅烧高岭土的生产方法，该方法是通过湿法选矿粗制高岭土以形成选择性高岭土的浆料; 使浆料脱水以形成基本上干燥的煅烧炉进料; 并通过使热气体流通过高岭土饲料所驻留的煅烧炉，在至少1450°F的温度下煅烧进料，由此产生热气体的排出流，其将一定量的部分煅烧和含水高岭土 颜料粉。 提高高岭土颜料细粉的有用应用包括从废气流中回收高岭土颜料细粒以用于造纸。 细粉可以在湿式洗涤器中回收，在部分脱水后，直接作为产品浆料运送到造纸厂。