Process for preparing precipitated silica using a mixer or extruder
US10246338B2 · kind B2 · utility
0Cited by
7References
19Claims
0Family size
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Key dates
| Filing date | Mar 21, 2013 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Mar 21, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/193
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.