Method for the separation of metal ions that are divalent or higher from strong acids or highly acidic media
US-10106426-B2 · Oct 23, 2018 · US
Process for preparing precipitated silica comprising a membrane concentration step
US9108853B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9108853-B2 |
| Application number | US-201314386012-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 21, 2013 |
| Priority date | Mar 22, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
Official abstract text for this publication.
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 (S 1 ), followed by: a separation step in order to obtain a cake, a cake-disintegration step in order to obtain a suspension of precipitated silica (S 2 ), and a suspension drying step. According to the invention, a membrane concentration step is performed between the disintegration step and the drying step.
First claim
Opening claim text (preview).
The invention claimed is: 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 (S 1 ), 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 (S 2 ), and by a step of drying said suspension of precipitated silica, wherein, in said process, a membrane concentration st…
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- C01B33/128Primary
Chemistry & Metallurgy · mapped topic
- C01B33/193Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9108853B2 cover?
- 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 (S 1 ), followed by: a separation step in order to obtain a cake, a cake-disintegration step in order to obtain a suspension of precipitated silica (S 2 ), and a suspension drying step. According to the invention, a membrane concentration st…
- Who is the assignee on this patent?
- Rhodia Operations
- What technology area does this patent fall under?
- Primary CPC classification C01B33/128. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).