公开(公告)号：US5204078A

公开(公告)日：1993-04-20

申请号：US766960

申请日：1991-09-25

申请人： Hiroshi Tateyama ,  Kinue Tsunematsu ,  Kunio Kimura ,  Hideharu Hirosue ,  Kazuhiko Jinnai ,  Takashi Furusawa

发明人： Hiroshi Tateyama ,  Kinue Tsunematsu ,  Kunio Kimura ,  Hideharu Hirosue ,  Kazuhiko Jinnai ,  Takashi Furusawa

IPC分类号： C01B33/42

CPC分类号： C01B33/425 ,  C01B33/28 ,  Y10S106/03 ,  Y10T428/2911

摘要： The present invention is a method for producing swellable or nonswellable fluorine mica at a relatively lower temperature by heating a powdery mixture comprising 10 to 35% by weight of an alkali silicofluoride as the main component optionally together with an alkali fluoride and the balance of talc. This fluorine mica is used for pigments, etc.

摘要翻译： 本发明是通过将含有10〜35重量％的氟化硅作为主要成分的粉末状混合物，与碱金属氟化物和余量的滑石一起加热，从而在相对较低的温度下生产可膨胀或不可用的氟云母的方法。 该氟云母用于颜料等

公开(公告)号：US5017523A

公开(公告)日：1991-05-21

申请号：US491427

申请日：1990-03-09

申请人： Kunio Kimura ,  Kazuhiko Jinnai ,  Hiroshi Tateyama

发明人： Kunio Kimura ,  Kazuhiko Jinnai ,  Hiroshi Tateyama

IPC分类号： C03C12/00 ,  C03B19/08 ,  C03B19/10 ,  C03C11/00 ,  C04B14/24

CPC分类号： C04B14/24 ,  C03B19/107 ,  C03C11/002 ,  Y02P40/57

摘要： Ultra-fine hollow glass spheres suitable as a filler in light-weight composite materials for building use and the like can be prepared from a fine powder of volcanic glass even when the starting powder has a particle size as fine as 20 .mu.m or smaller. The inventive method comprises an acid-leaching treatment of the starting powder using hydrochloric or sulfuric acid under hydrothermal conditions at 150.degree.-200.degree. C. to modify the chemical composition in the surface layer of the particles and a subsequent heat treatment of the acid-treated particles at a specified high temperature to effect expansion by the water vapor produced from the structural water in the softened particles. By virtue of the modified composition in the surface layer and in contrast to the prior art method without the acid treatment, a good balance can be obtained between the rate of water vapor release and softening of the particles even when the particle size is extremely small to facilitate expansion of the particles.

摘要翻译： 即使起始粉末的粒径为20μm以下，也可以由火山玻璃的微细粉末制备适合作为建筑用轻质复合材料的填料的超细中空玻璃球。 本发明的方法包括在150-2200℃的水热条件下使用盐酸或硫酸对起始粉末进行酸浸处理，以改变颗粒表层的化学组成，随后热处理酸 - 在特定的高温下处理的颗粒通过由软化的颗粒中的结构水产生的水蒸汽进行膨胀。 由于表面层中的改性组合物，与不进行酸处理的现有技术方法形成对照，即使在粒径非常小的情况下，也可以获得水蒸气释放速率和颗粒软化之间的良好平衡 有助于颗粒的膨胀。