| 发明名称 |
PROCESS FOR PREPARING PRECIPITATED SILICA COMPRISING A MEMBRANE CONCENTRATION STEP |
| 摘要 |
A process for preparing precipitated silica, in which a silicate is reacted with an acidifying agent in order to obtain a suspension of precipitated silica (S1), followed by: a separation step in order to obtain a cake, a cake-disintegration step in order to obtain a suspension of precipitated silica (S2), and a suspension drying step. According to the invention, a membrane concentration step is performed between the disintegration step and the drying step. |
| 申请公布号 |
US2015132209(A1) |
申请公布日期 |
2015.05.14 |
| 申请号 |
US201314386012 |
申请日期 |
2013.03.21 |
| 申请人 |
RHODIA OPERATIONS |
发明人 |
Neveu Sylvaine;Pinault Anne-Laure |
| 分类号 |
C01B33/12 |
主分类号 |
C01B33/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for preparing precipitated silica, said process comprising a reaction of a silicate with an acidifying agent in order to obtain a suspension of precipitated silica (S1), followed by a separation step in order to obtain a cake, by a step of disintegrating said cake in order to obtain a suspension of precipitated silica (S2), and by a step of drying said suspension of precipitated silica, wherein, in said process, a membrane concentration step is carried out between said disintegrating step and said drying step. |
| 地址 |
Paris FR |
