BE836714A - Procede et appareillage pour la preparation d'alpha-hemihydrate de sulfate de calcium - Google Patents
Procede et appareillage pour la preparation d'alpha-hemihydrate de sulfate de calciumInfo
- Publication number
- BE836714A BE836714A BE162803A BE162803A BE836714A BE 836714 A BE836714 A BE 836714A BE 162803 A BE162803 A BE 162803A BE 162803 A BE162803 A BE 162803A BE 836714 A BE836714 A BE 836714A
- Authority
- BE
- Belgium
- Prior art keywords
- hemihydrate
- preparation
- calcium sulphate
- sulphate alpha
- alpha
- Prior art date
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
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Removal Of Specific Substances (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742459739 DE2459739C3 (de) | 1974-12-18 | Verfahren und Anlage zur Herstellung von Calciumsulfat-alpha-Halbhydrat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE836714A true BE836714A (fr) | 1976-06-17 |
Family
ID=5933662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE162803A BE836714A (fr) | 1974-12-18 | 1975-12-17 | Procede et appareillage pour la preparation d'alpha-hemihydrate de sulfate de calcium |
Country Status (14)
| Country | Link |
|---|---|
| AT (1) | AT340445B (fr) |
| BE (1) | BE836714A (fr) |
| BR (1) | BR7508349A (fr) |
| CH (1) | CH618146A5 (fr) |
| DK (1) | DK142026C (fr) |
| FR (1) | FR2294985A1 (fr) |
| GB (1) | GB1474839A (fr) |
| IE (1) | IE42222B1 (fr) |
| LU (1) | LU74027A1 (fr) |
| NL (1) | NL172142C (fr) |
| PL (1) | PL109429B1 (fr) |
| RO (1) | RO67270A (fr) |
| SE (1) | SE405844B (fr) |
| SU (1) | SU805943A3 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0085382A1 (fr) * | 1982-02-01 | 1983-08-10 | Quante, Heinrich | Installation pour la préparation de alpha-sulfate de calcium demihydrate |
| CN111517355A (zh) * | 2020-05-05 | 2020-08-11 | 桂林理工大学 | 一种蒸压条件下磷石膏制备α半水石膏的方法 |
-
1975
- 1975-12-03 GB GB4965175A patent/GB1474839A/en not_active Expired
- 1975-12-12 RO RO7584191A patent/RO67270A/fr unknown
- 1975-12-12 CH CH1615975A patent/CH618146A5/de not_active IP Right Cessation
- 1975-12-15 SU SU752199179A patent/SU805943A3/ru active
- 1975-12-16 LU LU74027A patent/LU74027A1/xx unknown
- 1975-12-16 NL NLAANVRAGE7514656,A patent/NL172142C/xx not_active IP Right Cessation
- 1975-12-17 BR BR7508349*A patent/BR7508349A/pt unknown
- 1975-12-17 SE SE7514272A patent/SE405844B/xx unknown
- 1975-12-17 PL PL1975185660A patent/PL109429B1/pl unknown
- 1975-12-17 DK DK574175A patent/DK142026C/da active
- 1975-12-17 AT AT958575A patent/AT340445B/de not_active IP Right Cessation
- 1975-12-17 BE BE162803A patent/BE836714A/fr not_active IP Right Cessation
- 1975-12-17 IE IE2746/75A patent/IE42222B1/en unknown
- 1975-12-18 FR FR7538905A patent/FR2294985A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| NL172142C (nl) | 1983-07-18 |
| NL172142B (nl) | 1983-02-16 |
| DK574175A (da) | 1976-06-19 |
| FR2294985A1 (fr) | 1976-07-16 |
| IE42222B1 (en) | 1980-07-02 |
| RO67270A (fr) | 1980-03-15 |
| GB1474839A (en) | 1977-05-25 |
| SE405844B (sv) | 1979-01-08 |
| DE2459739B2 (de) | 1976-11-18 |
| CH618146A5 (en) | 1980-07-15 |
| FR2294985B1 (fr) | 1981-08-07 |
| SE7514272L (sv) | 1976-06-21 |
| NL7514656A (nl) | 1976-06-22 |
| IE42222L (en) | 1976-06-18 |
| SU805943A3 (ru) | 1981-02-15 |
| DK142026C (da) | 1981-01-05 |
| DE2459739A1 (de) | 1976-07-01 |
| ATA958575A (de) | 1977-04-15 |
| PL109429B1 (en) | 1980-05-31 |
| LU74027A1 (fr) | 1976-12-31 |
| DK142026B (da) | 1980-08-11 |
| AT340445B (de) | 1977-12-12 |
| BR7508349A (pt) | 1976-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: HOECHST A.G. Effective date: 19861231 |