公开(公告)号：US09487407B2

公开(公告)日：2016-11-08

申请号：US14386069

申请日：2013-03-21

Applicant: RHODIA OPERATIONS

Inventor： Elise Fournier ,  Sylvaine Neveu ,  Joël Racinoux

IPC: C01B33/12 ,  C01B33/187 ,  C01B33/193

CPC classification number: C01B33/187 ,  C01B33/193

Abstract: A process for preparing precipitated silica comprising a reaction of a silicate with an acidifying agent to obtain a suspension of precipitated silica (S1), followed by a step of separation to obtain a cake, a step of spalling said cake to obtain a suspension of precipitated silica (S2) and a step of drying said suspension, wherein the spalling step is carried out at a temperature of between 50 and 120° C.

公开(公告)号：US09902620B2

公开(公告)日：2018-02-27

申请号：US14509899

申请日：2014-10-08

Applicant: RHODIA OPERATIONS

Inventor： Elise Fournier ,  Jean-Claude Magne ,  Francois Nicol

IPC: C01B33/00 ,  C01B33/12 ,  C01B33/193

CPC classification number: C01B33/128 ,  C01B33/193

Abstract: A unique method for preparing precipitated silica entails reacting a silicate with an acidifying agent to obtain a suspension of precipitated silica, and separating and drying the suspension, and further wherein the precipitation includes contacting a silicate with an acidifying agent in an acidic medium in a fast blender.

公开(公告)号：US20150078979A1

公开(公告)日：2015-03-19

申请号：US14386069

申请日：2013-03-21

Applicant: RHODIA OPERATIONS

Inventor： Elise Fournier ,  Sylvaine Neveu ,  Joël Racinoux

IPC: C01B33/187

CPC classification number: C01B33/187 ,  C01B33/193

Abstract: A process for preparing precipitated silica comprising a reaction of a silicate with an acidifying agent to obtain a suspension of precipitated silica (S1), followed by a step of separation to obtain a cake, a step of spalling said cake to obtain a suspension of precipitated silica (S2) and a step of drying said suspension, wherein the spalling step is carried out at a temperature of between 50 and 120° C.

Abstract translation: 一种制备沉淀二氧化硅的方法，包括硅酸盐与酸化剂的反应以获得沉淀二氧化硅的悬浮液（S1），随后分离步骤以获得滤饼，剥离所述滤饼以获得沉淀的悬浮液 二氧化硅（S2）和干燥所述悬浮液的步骤，其中所述剥落步骤在50至120℃的温度下进行。