公开(公告)号：US20150110700A1

公开(公告)日：2015-04-23

申请号：US14386093

申请日：2013-03-21

Applicant: RHODIA OPERATIONS

Inventor： Sylvaine Neveu ,  Anne-Laure Pinault ,  Philippe Jost

IPC: C01B33/12

CPC classification number: C01B33/128 ,  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 separation step to obtain a cake, a disintegration step of said cake to obtain a suspension of precipitated silica (S2), and a drying step of this suspension, wherein the disintegration step is performed by mixing using a twin-screw mixer or by extrusion.

Abstract translation: 一种制备沉淀二氧化硅的方法，其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），随后进行分离步骤以获得滤饼，所述滤饼的崩解步骤获得沉淀二氧化硅 （S2）和该悬浮液的干燥步骤，其中分解步骤通过使用双螺杆混合器或挤出进行混合来进行。

公开(公告)号：US10246338B2

公开(公告)日：2019-04-02

申请号：US14386093

申请日：2013-03-21

Applicant: RHODIA OPERATIONS

Inventor： Sylvaine Neveu ,  Anne-Laure Pinault ,  Philippe Jost

IPC: C01B33/12 ,  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 separation step to obtain a cake, a disintegration step of said cake to obtain a suspension of precipitated silica (S2), and a drying step of this suspension, wherein the disintegration step is performed by mixing using a twin-screw mixer or by extrusion.

公开(公告)号：US11027981B2

公开(公告)日：2021-06-08

申请号：US15768287

申请日：2016-09-30

Applicant: RHODIA OPERATIONS

Inventor： Philippe Jost ,  Leo Ricardo Bedore Dos Santos ,  Daniella De Villefort Grossi

IPC: C01B33/32 ,  C01B33/193

Abstract: The invention relates to a novel process for the preparation of silicate comprising: reacting rice husk ash with a silicate precursor P1 to obtain a silicate S2 having a SiO2/MxO molar ratio MR2, in which the precursor P1 is either a silicate S1 having a SiO2/MxO molar ratio MR1 such that MR2>MR1, or a mixture of sand with metal hydroxide.