Invention Grant
- Patent Title: Process for preparing precipitated silica comprising a step of high temperature spalling
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Application No.: US14386069Application Date: 2013-03-21
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Publication No.: US09487407B2Publication Date: 2016-11-08
- Inventor: Elise Fournier , Sylvaine Neveu , Joël Racinoux
- Applicant: RHODIA OPERATIONS
- Applicant Address: FR Paris
- Assignee: RHODIA OPERATIONS
- Current Assignee: RHODIA OPERATIONS
- Current Assignee Address: FR Paris
- Priority: FR1252589 20120322
- International Application: PCT/EP2013/055973 WO 20130321
- International Announcement: WO2013/139932 WO 20130926
- Main IPC: C01B33/12
- IPC: C01B33/12 ; 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.
Public/Granted literature
- US20150078979A1 Process for preparing precipitated silica comprising a step of high temperature spalling Public/Granted day:2015-03-19
Information query
