GB1246664A - Method of manufacturing calcium sulphate hemi-hydrate - Google Patents
Method of manufacturing calcium sulphate hemi-hydrateInfo
- Publication number
- GB1246664A GB1246664A GB31603/68A GB3160368A GB1246664A GB 1246664 A GB1246664 A GB 1246664A GB 31603/68 A GB31603/68 A GB 31603/68A GB 3160368 A GB3160368 A GB 3160368A GB 1246664 A GB1246664 A GB 1246664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- gypsum
- heating
- calcium sulphate
- temperature
- 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
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 6
- 238000010438 heat treatment Methods 0.000 abstract 5
- 229910052602 gypsum Inorganic materials 0.000 abstract 4
- 239000010440 gypsum Substances 0.000 abstract 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 241000562356 Polietes Species 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 150000002891 organic anions Chemical class 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 229910052701 rubidium Inorganic materials 0.000 abstract 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/032—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the wet process, e.g. dehydrating in solution or under saturated vapour conditions, i.e. to obtain alpha-hemihydrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J16/00—Chemical processes in general for reacting liquids with non- particulate solids, e.g. sheet material; Apparatus specially adapted therefor
-
- 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
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR119019 | 1967-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1246664A true GB1246664A (en) | 1971-09-15 |
Family
ID=8637363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31603/68A Expired GB1246664A (en) | 1967-08-25 | 1968-07-02 | Method of manufacturing calcium sulphate hemi-hydrate |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE717260A (forum.php) |
| CH (1) | CH510583A (forum.php) |
| DE (1) | DE1767937C3 (forum.php) |
| ES (1) | ES356722A1 (forum.php) |
| FR (1) | FR1548410A (forum.php) |
| GB (1) | GB1246664A (forum.php) |
| LU (1) | LU56676A1 (forum.php) |
| NL (1) | NL6812084A (forum.php) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876996A1 (de) * | 1997-05-10 | 1998-11-11 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Verfahren zum Herstellen von Calciumsulfat-Alphahalbhydrat |
| CN110498626A (zh) * | 2019-09-09 | 2019-11-26 | 太原科技大学 | 一种α型半水石膏的生产方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8793897B2 (en) * | 2010-08-11 | 2014-08-05 | Grenzebach Bsh Gmbh | Process and device for stabilising, cooling and dehumidifying gypsum plaster |
-
1967
- 1967-08-25 FR FR119019A patent/FR1548410A/fr not_active Expired
-
1968
- 1968-06-27 BE BE717260D patent/BE717260A/xx not_active IP Right Cessation
- 1968-07-01 CH CH978568A patent/CH510583A/fr not_active IP Right Cessation
- 1968-07-02 GB GB31603/68A patent/GB1246664A/en not_active Expired
- 1968-07-03 DE DE1767937A patent/DE1767937C3/de not_active Expired
- 1968-07-31 ES ES356722A patent/ES356722A1/es not_active Expired
- 1968-08-08 LU LU56676D patent/LU56676A1/xx unknown
- 1968-08-23 NL NL6812084A patent/NL6812084A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876996A1 (de) * | 1997-05-10 | 1998-11-11 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Verfahren zum Herstellen von Calciumsulfat-Alphahalbhydrat |
| CN110498626A (zh) * | 2019-09-09 | 2019-11-26 | 太原科技大学 | 一种α型半水石膏的生产方法 |
| CN110498626B (zh) * | 2019-09-09 | 2022-04-05 | 太原科技大学 | 一种α型半水石膏的生产方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| LU56676A1 (forum.php) | 1968-11-18 |
| DE1767937B2 (de) | 1973-08-02 |
| FR1548410A (forum.php) | 1968-12-06 |
| DE1767937A1 (de) | 1972-03-09 |
| ES356722A1 (es) | 1970-02-16 |
| NL6812084A (forum.php) | 1969-02-27 |
| CH510583A (fr) | 1971-07-31 |
| BE717260A (forum.php) | 1968-12-02 |
| DE1767937C3 (de) | 1974-03-07 |
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