公开(公告)号：US5977003A

公开(公告)日：1999-11-02

申请号：US715674

申请日：1996-09-18

Applicant: Nicholas John Goodwin Wilshaw ,  Jonathan Andrew Hearle ,  Mathew Thomas Rundle

Inventor： Nicholas John Goodwin Wilshaw ,  Jonathan Andrew Hearle ,  Mathew Thomas Rundle

IPC: C12H1/00 ,  B01D39/06 ,  B01D39/20 ,  B01J20/02 ,  C04B20/02 ,  C04B38/00 ,  C04B38/02 ,  C08K7/26 ,  C12H1/044 ,  C12H1/07 ,  C04B33/00

CPC classification number: B01D39/06 ,  B01J20/02 ,  B01J20/0248 ,  B01J20/0251 ,  B01J20/0259 ,  B01J20/0292 ,  B01J20/06 ,  B01J20/08 ,  B01J20/10 ,  B01J20/12 ,  B01J20/16 ,  B01J20/3007 ,  B01J20/3021 ,  B01J20/3078 ,  C04B20/026 ,  C04B38/009 ,  C08K7/26 ,  C12H1/0408 ,  C12H1/063 ,  C04B2111/00793

Abstract: A ceramic particulate material which comprises particles having an irregular three dimensional surface profile having jagged projections and a median particle diameter of 200 micrometers or less, the particles being fractals produced by comminution of foamed ceramic material. The material may be such that in a sphere of rotation of the particle, from 30% to 80% of the volume of the sphere is void, the remainder being continuous solid material. The material may be produced by a process which includes providing a suspension of ceramic forming particles e.g., of an aluminosilicate such as clay, in a liquid medium; incorporating a gas in the liquid medium before or after formation of the suspension therein to produce a foamed suspension; extruding the foamed suspension; optionally drying the extrudate formed thereby; calcining the extrudate; and comminuting the calcined material, e.g. by crushing. The material may be used as a substitute for diatomite.

Abstract translation: 一种陶瓷颗粒材料，其包含具有不规则三维表面轮廓的具有锯齿状突起并且中值粒径为200微米或更小的颗粒，所述颗粒是通过粉碎泡沫陶瓷材料产生的分形。 该材料可以使得在颗粒旋转的球体中，球的体积的30％至80％是空隙的，其余部分是连续的固体材料。 该材料可以通过包括在液体介质中提供陶瓷形成颗粒例如粘土等硅酸铝的悬浮液的方法来制备; 在其中形成悬浮液之前或之后在液体介质中引入气体以产生泡沫悬浮液; 挤出泡沫悬浮液; 任选地干燥由此形成的挤出物; 煅烧挤出物; 并粉碎煅烧的材料，例如。 通过粉碎。 该材料可用作硅藻土的替代品。