CA2239511C - Procede de fabrication de particules grenues de carbonate de calcium - Google Patents
Procede de fabrication de particules grenues de carbonate de calcium Download PDFInfo
- Publication number
- CA2239511C CA2239511C CA002239511A CA2239511A CA2239511C CA 2239511 C CA2239511 C CA 2239511C CA 002239511 A CA002239511 A CA 002239511A CA 2239511 A CA2239511 A CA 2239511A CA 2239511 C CA2239511 C CA 2239511C
- Authority
- CA
- Canada
- Prior art keywords
- weight percent
- slurry
- calcium hydroxide
- calcium carbonate
- carbonation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/11—Particle morphology extending in one dimension, e.g. needle-like with a prismatic shape
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/40—Particle morphology extending in three dimensions prism-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
L'invention concerne un procédé qui consiste à précipiter des particules grenues de carbonate de calcium à structure prismatique par carbonatation d'hydroxyde de calcium aqueux contenant un saccharide ou un polysaccharide ou bien un saccharide ou un polysaccharide et un ion métallique, à des températures comprises entre 8 DEG et 64 DEG C environ. Le produit résultant, dont l'aire spécifique est comprise entre 10 m<2>/g et 120 m<2>/g environ, est utile dans la fabrication des peintures, des matières plastiques, des supports de couchage du papier, des agents de charge pour papier ainsi que dans les applications pharmaceutiques.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/567,754 | 1995-12-05 | ||
US08/567,754 US5741471A (en) | 1995-12-05 | 1995-12-05 | Process for the preparation of discrete particles of calcium carbonate |
PCT/US1996/018656 WO1997020771A1 (fr) | 1995-12-05 | 1996-11-22 | Procede de fabrication de particules grenues de carbonate de calcium |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2239511A1 CA2239511A1 (fr) | 1997-06-12 |
CA2239511C true CA2239511C (fr) | 2006-12-12 |
Family
ID=37561094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002239511A Expired - Fee Related CA2239511C (fr) | 1995-12-05 | 1996-11-22 | Procede de fabrication de particules grenues de carbonate de calcium |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2239511C (fr) |
-
1996
- 1996-11-22 CA CA002239511A patent/CA2239511C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2239511A1 (fr) | 1997-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |