发明名称 |
Modified kaolin compositions and methods for making same |
摘要 |
A method for preparing a modified kaolin clay, includes the steps of providing a kaolin clay material having a starting ratio of silica to alumina; mixing the kaolin clay material with acid so as to form a substantially homogenous paste; calcining the paste so as to provide a calcined acid-treated clay material; mixing the calcined acid-treated clay material in water so as to form a suspension; precipitating aluminum from the suspension so as to produce a reduced aluminum suspension; and obtaining a modified clay material from the reduced aluminum suspension, wherein the modified clay material has a final ratio of silica to alumina which is higher than the starting ratio.
|
申请公布号 |
US2005261122(A1) |
申请公布日期 |
2005.11.24 |
申请号 |
US20050118289 |
申请日期 |
2005.04.29 |
申请人 |
INTEVEP, S.A. |
发明人 |
QUESADA PEREZ ANDRES M.;VITALE-ROJAS GERARDO |
分类号 |
B01J21/16;B01J29/08;B01J35/00;B01J35/10;B01J37/03;B01J37/06;(IPC1-7):B01J21/16 |
主分类号 |
B01J21/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|