DE3732281C2 - - Google Patents
Info
- Publication number
- DE3732281C2 DE3732281C2 DE19873732281 DE3732281A DE3732281C2 DE 3732281 C2 DE3732281 C2 DE 3732281C2 DE 19873732281 DE19873732281 DE 19873732281 DE 3732281 A DE3732281 A DE 3732281A DE 3732281 C2 DE3732281 C2 DE 3732281C2
- Authority
- DE
- Germany
- Prior art keywords
- air
- pressure
- molding
- moldings
- autoclave
- 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 - Lifetime
Links
- 238000000465 moulding Methods 0.000 claims description 54
- 229910052602 gypsum Inorganic materials 0.000 claims description 32
- 239000010440 gypsum Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 28
- 150000004683 dihydrates Chemical class 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 230000036571 hydration Effects 0.000 claims description 8
- 238000006703 hydration reaction Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000010811 mineral waste Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000002956 ash Substances 0.000 description 11
- 239000002699 waste material Substances 0.000 description 9
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 8
- 239000004566 building material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000654 additive Substances 0.000 description 5
- 239000011455 calcium-silicate brick Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000035475 disorder Diseases 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 206010006895 Cachexia Diseases 0.000 description 1
- 235000007575 Calluna vulgaris Nutrition 0.000 description 1
- JLFVIEQMRKMAIT-UHFFFAOYSA-N ac1l9mnz Chemical compound O.O.O JLFVIEQMRKMAIT-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011394 gypsum concrete Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000004056 waste incineration 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/141—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing dihydrated gypsum before the final hardening step, e.g. forming a dihydrated gypsum product followed by a de- and rehydration step
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873732281 DE3732281A1 (de) | 1987-09-25 | 1987-09-25 | Verfahren zum kompaktieren von gips und abfallstoffen mit gips als bindemittel |
| DE19893908964 DE3908964A1 (de) | 1987-09-25 | 1989-03-18 | Verfahren zur herstellung von schaumgips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873732281 DE3732281A1 (de) | 1987-09-25 | 1987-09-25 | Verfahren zum kompaktieren von gips und abfallstoffen mit gips als bindemittel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3732281A1 DE3732281A1 (de) | 1989-04-06 |
| DE3732281C2 true DE3732281C2 (enrdf_load_stackoverflow) | 1990-10-18 |
Family
ID=6336838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19873732281 Granted DE3732281A1 (de) | 1987-09-25 | 1987-09-25 | Verfahren zum kompaktieren von gips und abfallstoffen mit gips als bindemittel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3732281A1 (enrdf_load_stackoverflow) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117662A1 (de) * | 1981-05-05 | 1982-11-25 | Heinrich 4350 Recklinghausen Quante | Gipsstein- und gipssandsteinherstellung |
-
1987
- 1987-09-25 DE DE19873732281 patent/DE3732281A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3732281A1 (de) | 1989-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| AG | Has addition no. |
Ref country code: DE Ref document number: 3908964 Format of ref document f/p: P |
|
| AG | Has addition no. |
Ref country code: DE Ref document number: 3908964 Format of ref document f/p: P |
|
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| AG | Has addition no. |
Ref country code: DE Ref document number: 3908964 Format of ref document f/p: P |
|
| 8331 | Complete revocation |