BE494762A - - Google Patents
Info
- Publication number
- BE494762A BE494762A BE494762DA BE494762A BE 494762 A BE494762 A BE 494762A BE 494762D A BE494762D A BE 494762DA BE 494762 A BE494762 A BE 494762A
- Authority
- BE
- Belgium
- Prior art keywords
- steam
- plaster
- water vapor
- gypsum
- raw
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 239000000463 material Substances 0.000 claims description 61
- 239000011505 plaster Substances 0.000 claims description 58
- 238000000034 method Methods 0.000 claims description 57
- 229910052602 gypsum Inorganic materials 0.000 claims description 50
- 239000010440 gypsum Substances 0.000 claims description 50
- 239000002994 raw material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 230000000704 physical effect Effects 0.000 claims description 10
- 238000007792 addition Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 239000007858 starting material Substances 0.000 claims description 9
- 229910052925 anhydrite Inorganic materials 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 238000003303 reheating Methods 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 235000011132 calcium sulphate Nutrition 0.000 claims description 3
- 239000001175 calcium sulphate Substances 0.000 claims description 3
- 239000004035 construction material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 241001572175 Gaza Species 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 22
- 239000000047 product Substances 0.000 description 20
- 238000009434 installation Methods 0.000 description 12
- 239000000428 dust Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 10
- 238000002425 crystallisation Methods 0.000 description 8
- 230000008025 crystallization Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 150000004683 dihydrates Chemical class 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 101100113998 Mus musculus Cnbd2 gene Proteins 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000012885 constant function Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- -1 for example alum Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 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
- 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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494762A true BE494762A (enrdf_load_stackoverflow) |
Family
ID=138435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494762D BE494762A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE494762A (enrdf_load_stackoverflow) |
-
0
- BE BE494762D patent/BE494762A/fr unknown
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