公开(公告)号：US20060153769A1

公开(公告)日：2006-07-13

申请号：US10541471

申请日：2004-01-06

申请人： John Robinson ,  Lara Heatley ,  Takuya Tsuzuki ,  David Lee ,  Paul McCormick

发明人： John Robinson ,  Lara Heatley ,  Takuya Tsuzuki ,  David Lee ,  Paul McCormick

IPC分类号： C01F7/02

CPC分类号： C01F7/30 ,  C01F7/02 ,  C01F7/442 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/22 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  C09C1/0018 ,  C09C1/407

摘要： A process for producing plate-like alumina particles with a high aspect ratio is described. Nano-sized particles of an aluminium precursor compound, optionally formed by milling, are mixed with a sufficient volume fraction of a diluent and heat treated to form substantially discrete plate-like alpha alumina particles dispersed in the diluent. A mineraliser may be added to lower the effective melting point of the system. Substantially discrete plate-like particles may be formed without agitation when the heat treatment is conducted below the melting point of the diluent.