DE169737C - - Google Patents
Info
- Publication number
- DE169737C DE169737C DENDAT169737D DE169737DA DE169737C DE 169737 C DE169737 C DE 169737C DE NDAT169737 D DENDAT169737 D DE NDAT169737D DE 169737D A DE169737D A DE 169737DA DE 169737 C DE169737 C DE 169737C
- Authority
- DE
- Germany
- Prior art keywords
- heating
- gypsum
- boiler
- plaster
- spirals
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 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 description 3
- 239000011507 gypsum plaster Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Cookers (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE169737C true DE169737C (zh) |
Family
ID=434833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT169737D Active DE169737C (zh) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE169737C (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996023741A1 (en) * | 1995-02-02 | 1996-08-08 | United States Gypsum Company | Method and apparatus for continuous refractoryless calcining of gypsum |
| US5743728A (en) * | 1995-08-15 | 1998-04-28 | Usg Corporation | Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
-
0
- DE DENDAT169737D patent/DE169737C/de active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996023741A1 (en) * | 1995-02-02 | 1996-08-08 | United States Gypsum Company | Method and apparatus for continuous refractoryless calcining of gypsum |
| US5743954A (en) * | 1995-02-02 | 1998-04-28 | United States Gypsum Company | Method for continuous refractoryless calcining of gypsum |
| US5927968A (en) * | 1995-02-02 | 1999-07-27 | United States Gypsum Company | Apparatus for continuous refractoryless calcining of gypsum |
| US5743728A (en) * | 1995-08-15 | 1998-04-28 | Usg Corporation | Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| EP0844987A4 (en) * | 1995-08-15 | 1998-12-02 | United States Gypsum Co | Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| US5954497A (en) * | 1995-08-15 | 1999-09-21 | Usg Corporation | Method for multi-stage calcining of gypsum to produce an anhydrite product |
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