SE469720B - Foerfarande foer framstaellning av kalciumsulfat-alfa-semihydrat - Google Patents
Foerfarande foer framstaellning av kalciumsulfat-alfa-semihydratInfo
- Publication number
- SE469720B SE469720B SE8801873A SE8801873A SE469720B SE 469720 B SE469720 B SE 469720B SE 8801873 A SE8801873 A SE 8801873A SE 8801873 A SE8801873 A SE 8801873A SE 469720 B SE469720 B SE 469720B
- Authority
- SE
- Sweden
- Prior art keywords
- calcium sulphate
- shaped bodies
- alpha
- autoclave
- hydrate
- Prior art date
Links
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims description 29
- 229910052791 calcium Inorganic materials 0.000 title claims description 29
- 239000011575 calcium Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 27
- 239000013078 crystal Substances 0.000 claims description 49
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 45
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 31
- 239000011148 porous material Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical class O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000001175 calcium sulphate Substances 0.000 claims description 21
- 235000011132 calcium sulphate Nutrition 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 229910052602 gypsum Inorganic materials 0.000 claims description 15
- 239000010440 gypsum Substances 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 13
- 238000001953 recrystallisation Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000003077 lignite Substances 0.000 claims description 4
- 239000003415 peat Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 3
- 150000004683 dihydrates Chemical class 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 239000013081 microcrystal Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 description 14
- 238000000227 grinding Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 4
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 229960002303 citric acid monohydrate Drugs 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- -1 acyclic carbonic acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000012084 conversion product Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000005406 washing 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0154—Litter comprising inorganic material
-
- 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
-
- 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
- C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers
-
- 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
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
- C04B11/268—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke pelletizing of the material before starting the manufacture
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/14—Pore volume
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Animal Husbandry (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3717187 | 1987-05-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8801873D0 SE8801873D0 (sv) | 1988-05-19 |
| SE8801873L SE8801873L (sv) | 1988-11-23 |
| SE469720B true SE469720B (sv) | 1993-08-30 |
Family
ID=6328115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8801873A SE469720B (sv) | 1987-05-22 | 1988-05-19 | Foerfarande foer framstaellning av kalciumsulfat-alfa-semihydrat |
Country Status (20)
| Country | Link |
|---|---|
| US (2) | US5015449A (ja) |
| EP (1) | EP0342272B1 (ja) |
| JP (1) | JPH0657605B2 (ja) |
| AT (1) | AT396225B (ja) |
| BE (1) | BE1002843A5 (ja) |
| CA (2) | CA1335034C (ja) |
| CH (1) | CH676974A5 (ja) |
| CS (2) | CS276735B6 (ja) |
| DD (2) | DD272291A5 (ja) |
| DK (1) | DK277088A (ja) |
| ES (2) | ES2009278A6 (ja) |
| FI (1) | FI90052C (ja) |
| FR (1) | FR2615505B1 (ja) |
| GB (1) | GB2205089B (ja) |
| GR (1) | GR1001149B (ja) |
| IT (1) | IT1217676B (ja) |
| LU (1) | LU87220A1 (ja) |
| NL (1) | NL191238C (ja) |
| NO (1) | NO179578C (ja) |
| SE (1) | SE469720B (ja) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3844938C2 (de) * | 1987-05-22 | 1996-09-19 | Pro Mineral Ges | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
| DE3800794A1 (de) * | 1988-01-14 | 1989-07-27 | Rwk Rhein Westfael Kalkwerke | Verfahren und anlage zur herstellung von calciumsulfat-halbhydrat in alpha-konfiguration |
| DE4008084A1 (de) * | 1990-03-14 | 1991-09-19 | Pro Mineral Ges | Verfahren zur herstellung von gipsfaserplatten, insbesondere von fussbodenplatten |
| DK170143B1 (da) * | 1990-09-26 | 1995-06-06 | Skamol As | Fremstilling og anvendelse af sorberende materiale som kattegrus |
| DE4034497C1 (ja) * | 1990-10-30 | 1992-02-13 | Metallgesellschaft Ag, 6000 Frankfurt, De | |
| DE4127932A1 (de) * | 1991-08-23 | 1993-02-25 | Bold Joerg | Verfahren und vorrichtung zur herstellung von faserverstaerkten gipsplatten und dergleichen |
| US5312609A (en) * | 1992-12-31 | 1994-05-17 | Dravo Lime Company | Method of sulfur dioxide removal from gaseous streams with α-hemihydrate gypsum product formation |
| FI945805A (fi) * | 1993-12-16 | 1995-06-17 | Sicowa Verfahrenstechnik Fuet | Sideaine sisärappauslaastia varten |
| US5395438A (en) * | 1994-01-14 | 1995-03-07 | Usg Interiors, Inc. | Mineral wool-free acoustical tile composition |
| JP2614602B2 (ja) * | 1994-06-09 | 1997-05-28 | 小坂製錬株式会社 | 硫酸液からの板状二水石膏の連続製造法 |
| US5595713A (en) * | 1994-09-08 | 1997-01-21 | The Babcock & Wilcox Company | Hydrogen peroxide for flue gas desulfurization |
| US5562892A (en) * | 1995-01-26 | 1996-10-08 | Kirk; Donald W. | Process for the production of alpha hemihydrate calcium sulfate from flue gas sludge |
| US6042665A (en) * | 1996-02-16 | 2000-03-28 | Kiraly; Bela | Process for the production of gypsum-based composite boards and shaped bodies |
| EP0876996B1 (de) * | 1997-05-10 | 2001-12-19 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Verfahren zum Herstellen von Calciumsulfat-Alphahalbhydrat |
| US6164026A (en) * | 1997-09-25 | 2000-12-26 | New Jersey Institute Of Technology | Raised access floor |
| US6652825B2 (en) | 2001-05-01 | 2003-11-25 | National Gypsum Properties Llc | Method of producing calcium sulfate alpha-hemihydrate |
| US7507257B2 (en) * | 2003-02-04 | 2009-03-24 | Wright Medical Technology, Inc. | Injectable resorbable bone graft material, powder for forming same and methods relating thereto for treating bone defects |
| US6964704B2 (en) * | 2003-03-20 | 2005-11-15 | G.B. Technologies, Llc | Calcium sulphate-based composition and methods of making same |
| CN100352767C (zh) * | 2003-03-20 | 2007-12-05 | G.B.科技有限公司 | 一种α型硫酸钙半水合物及其制造方法和含有它们的混合物 |
| JP4075709B2 (ja) * | 2003-07-02 | 2008-04-16 | 住友電装株式会社 | コネクタ |
| US7776150B2 (en) * | 2006-03-16 | 2010-08-17 | Koppern Eqipment, Inc. | Process and apparatus for handling synthetic gypsum |
| DK2036869T3 (da) | 2006-06-29 | 2021-05-10 | Yoshino Gypsum Co | Fremgangsmåder til fremstilling af en kalcineret gips og en gipsplade |
| US7754006B2 (en) * | 2007-03-20 | 2010-07-13 | United States Gypsum Company | Process for manufacturing ready-mixed setting alpha-calcium sulphate hemi-hydrate and kit for same |
| DE102007024188B3 (de) * | 2007-05-24 | 2008-04-10 | Grenzebach Bsh Gmbh | Verfahren zur Herstellung von Alpha-Calciumsulfat-Halbhydrat aus Calciumsulfat-Dihydrat und zugehörige Vorrichtung |
| US20090208392A1 (en) * | 2008-02-14 | 2009-08-20 | Georgia-Pacific Gypsum, Llc | Process for producing alpha-hemihydrate gypsum |
| FI120819B (fi) * | 2008-04-09 | 2010-03-31 | Kemira Oyj | Menetelmä kipsin puhdistamiseksi |
| EP2163532A1 (de) | 2008-09-11 | 2010-03-17 | Claudius Peters Technologies GmbH | Verfahren und Anlage zur Herstellung von Hartgips |
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| CN106145854A (zh) * | 2016-07-01 | 2016-11-23 | 马振义 | 耐水脱硫石膏模合及其制备方法 |
| SG11201902825RA (en) * | 2016-10-17 | 2019-05-30 | Lidds Ab | A new method for producing calcium sulphate hemihydrate with unique properties |
| CN111298805B (zh) * | 2020-03-13 | 2023-04-11 | 吉林省惠净环保有限公司 | 一种燃煤催化剂及其制备方法和应用 |
| CN111807736A (zh) * | 2020-07-13 | 2020-10-23 | 湖南金隆再生金属有限公司 | 一种脱硫熟石膏加工工艺 |
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1988
- 1988-05-13 GB GB8811393A patent/GB2205089B/en not_active Expired - Lifetime
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- 1988-05-19 FR FR8806696A patent/FR2615505B1/fr not_active Expired - Lifetime
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- 1988-05-20 DK DK277088A patent/DK277088A/da not_active Application Discontinuation
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- 1988-05-20 DD DD88315961A patent/DD281593A5/de unknown
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- 1988-05-20 IT IT20672/88A patent/IT1217676B/it active
- 1988-05-23 US US07/197,604 patent/US5015449A/en not_active Expired - Fee Related
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