GB1049815A - A process for the production of crystalline calcium carbonate of vaterite type - Google Patents
A process for the production of crystalline calcium carbonate of vaterite typeInfo
- Publication number
- GB1049815A GB1049815A GB2805864A GB2805864A GB1049815A GB 1049815 A GB1049815 A GB 1049815A GB 2805864 A GB2805864 A GB 2805864A GB 2805864 A GB2805864 A GB 2805864A GB 1049815 A GB1049815 A GB 1049815A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gaseous
- production
- calcium carbonate
- vaterite type
- crystalline calcium
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- 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
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Crystalline CaCO3 of the vaterite type is prepared by reacting gaseous CO2 with an aqueous solution of CaCl2 which has been made alkaline to a pH of higher than 8 by addition of NH4OH, while vigorously agitating the solution, maintaining the pH of higher than 8, if necessary by further addition of NH4OH, and maintaining a temperature of not higher than 20 DEG C. Gaseous CO2 diluted with an inert gas, e.g. nitrogen, may be used under elevated pressure. Crystals with a grain size of up to 5 microns are obtained. In a comparative example, gaseous CO2 is replaced by aqueous solutions of ammonium and sodium carbonates.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0026541 | 1964-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1049815A true GB1049815A (en) | 1966-11-30 |
Family
ID=7552848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2805864A Expired GB1049815A (en) | 1964-07-09 | 1964-07-08 | A process for the production of crystalline calcium carbonate of vaterite type |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1467287B2 (en) |
| GB (1) | GB1049815A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0558275A1 (en) * | 1992-02-26 | 1993-09-01 | Pretoria Portland Cement Company Limited | Production of purified calcium carbonate |
| CN111778547A (en) * | 2019-04-04 | 2020-10-16 | 西南科技大学 | A kind of preparation method of aragonite type calcium carbonate whisker |
| CN116495784A (en) * | 2023-06-20 | 2023-07-28 | 赣州市海龙钨钼有限公司 | Method for purifying ammonium paratungstate in ammonium tungstate solution |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH640485A5 (en) * | 1979-06-20 | 1984-01-13 | Sulzer Ag | METHOD FOR PRODUCING HIGH PURITY MAGNESIUM OXIDE. |
| DE19603449C2 (en) * | 1996-01-31 | 1998-03-19 | Papiertechnische Stiftung | Process for the production of calcium carbonate from calcium-containing combustion residues of residues from paper production |
-
1964
- 1964-07-08 GB GB2805864A patent/GB1049815A/en not_active Expired
- 1964-07-09 DE DE19641467287 patent/DE1467287B2/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0558275A1 (en) * | 1992-02-26 | 1993-09-01 | Pretoria Portland Cement Company Limited | Production of purified calcium carbonate |
| US5376343A (en) * | 1992-02-26 | 1994-12-27 | Pretoria Portland Cement Company Limited | Production of purified calcium carbonate |
| CN111778547A (en) * | 2019-04-04 | 2020-10-16 | 西南科技大学 | A kind of preparation method of aragonite type calcium carbonate whisker |
| CN116495784A (en) * | 2023-06-20 | 2023-07-28 | 赣州市海龙钨钼有限公司 | Method for purifying ammonium paratungstate in ammonium tungstate solution |
| CN116495784B (en) * | 2023-06-20 | 2023-09-15 | 赣州市海龙钨钼有限公司 | Method for purifying ammonium paratungstate in ammonium tungstate solution |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1467287B2 (en) | 1972-02-10 |
| DE1467287A1 (en) | 1969-02-13 |
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