Material for neutralising and/or hardening liquids, a method for producing same, and uses
US-2024293793-A1 · Sep 5, 2024 · US
Production of high purity precipitated calcium carbonate
US8992875B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992875-B2 |
| Application number | US-201113879492-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 20, 2011 |
| Priority date | Oct 26, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
Official abstract text for this publication.
The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the preparation of precipitated calcium carbonate comprising the steps of: a) providing and calcining calcium carbonate comprising material to obtain a reaction product comprising calcium oxide; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtai…
Assignees
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Classifications
- C01F11/185Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C01F11/18Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8992875B2 cover?
- The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the …
- Who is the assignee on this patent?
- Tavakkoli Bahman, Sötemann Jörg, Pohl Michael, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C01F11/185. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 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).