DE3819652A1 - Verfahren zur erzeugung von als baustoff geeignetem calcium-alphahalbhydrat aus feuchtem, feinteiligem rauchgasentschwefelungsgips - Google Patents
Verfahren zur erzeugung von als baustoff geeignetem calcium-alphahalbhydrat aus feuchtem, feinteiligem rauchgasentschwefelungsgipsInfo
- Publication number
- DE3819652A1 DE3819652A1 DE3819652A DE3819652A DE3819652A1 DE 3819652 A1 DE3819652 A1 DE 3819652A1 DE 3819652 A DE3819652 A DE 3819652A DE 3819652 A DE3819652 A DE 3819652A DE 3819652 A1 DE3819652 A1 DE 3819652A1
- Authority
- DE
- Germany
- Prior art keywords
- calcium sulfate
- alpha hemihydrate
- sulfate alpha
- autoclave
- flue gas
- 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.)
- Granted
Links
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 126
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 33
- 239000010440 gypsum Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 12
- 239000004566 building material Substances 0.000 title claims description 7
- 235000011132 calcium sulphate Nutrition 0.000 title abstract description 39
- 239000001175 calcium sulphate Substances 0.000 title abstract description 4
- 239000013078 crystal Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011148 porous material Substances 0.000 claims abstract description 32
- 238000001953 recrystallisation Methods 0.000 claims abstract description 14
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 11
- 239000003077 lignite Substances 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims abstract description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 26
- 230000023556 desulfurization Effects 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 10
- 239000011505 plaster Substances 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims 1
- CWVZGJORVTZXFW-UHFFFAOYSA-N [benzyl(dimethyl)silyl]methyl carbamate Chemical compound NC(=O)OC[Si](C)(C)CC1=CC=CC=C1 CWVZGJORVTZXFW-UHFFFAOYSA-N 0.000 claims 1
- 239000003463 adsorbent Substances 0.000 claims 1
- 239000010426 asphalt Substances 0.000 claims 1
- 210000000476 body water Anatomy 0.000 claims 1
- 229960003340 calcium silicate Drugs 0.000 claims 1
- 229910052918 calcium silicate Inorganic materials 0.000 claims 1
- 235000012241 calcium silicate Nutrition 0.000 claims 1
- 239000000378 calcium silicate Substances 0.000 claims 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims 1
- 239000000919 ceramic Substances 0.000 claims 1
- 239000011093 chipboard Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 claims 1
- 239000011094 fiberboard Substances 0.000 claims 1
- 150000004820 halides Chemical class 0.000 claims 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract description 5
- 229940095672 calcium sulfate Drugs 0.000 description 35
- 239000000126 substance Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 238000000227 grinding Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 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 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 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
- 239000011455 calcium-silicate brick Substances 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 229960002303 citric acid monohydrate Drugs 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 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
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- NQLVQOSNDJXLKG-UHFFFAOYSA-N prosulfocarb Chemical compound CCCN(CCC)C(=O)SCC1=CC=CC=C1 NQLVQOSNDJXLKG-UHFFFAOYSA-N 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental Sciences (AREA)
- Geology (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Claims (19)
- wobei aus dem Rauchgasentschwefelunggips Formkörper ge formt werden, die 15 bis 60% Porenvolumen sowie in den Poren mehr als 5 Vol.-% Luft und zumindest 3 Masse% Wasser (alle Prozentangaben bezogen auf das Volumen der ein zelnen Formkörper bzw. die Masse der einzelnen Form körper) aufweisen,
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3816513A DE3816513C3 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
DE3819652A DE3819652C3 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von als Baustoff geeignetem Calciumsulfat-Alphahalbhydrat aus feuchtem, feinteiligem Rauchgasentschwefelungsgips und seine Verwendung |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3717187 | 1987-05-22 | ||
DE3816513A DE3816513C3 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
DE3819652A DE3819652C3 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von als Baustoff geeignetem Calciumsulfat-Alphahalbhydrat aus feuchtem, feinteiligem Rauchgasentschwefelungsgips und seine Verwendung |
Publications (3)
Publication Number | Publication Date |
---|---|
DE3819652A1 true DE3819652A1 (de) | 1988-12-15 |
DE3819652C2 DE3819652C2 (de) | 1990-07-05 |
DE3819652C3 DE3819652C3 (de) | 1996-08-01 |
Family
ID=25855890
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3819652A Expired - Lifetime DE3819652C3 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von als Baustoff geeignetem Calciumsulfat-Alphahalbhydrat aus feuchtem, feinteiligem Rauchgasentschwefelungsgips und seine Verwendung |
DE3844938A Expired - Lifetime DE3844938C2 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3844938A Expired - Lifetime DE3844938C2 (de) | 1987-05-22 | 1988-05-14 | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
Country Status (3)
Country | Link |
---|---|
US (1) | US5093093A (de) |
DE (2) | DE3819652C3 (de) |
WO (1) | WO1989010905A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3908964A1 (de) * | 1987-09-25 | 1990-09-20 | Heinrich Graucob | Verfahren zur herstellung von schaumgips |
EP0662460A1 (de) * | 1993-12-16 | 1995-07-12 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Bindemittel für einen Innenputz |
EP2163532A1 (de) * | 2008-09-11 | 2010-03-17 | Claudius Peters Technologies GmbH | Verfahren und Anlage zur Herstellung von Hartgips |
CN103482892A (zh) * | 2013-09-17 | 2014-01-01 | 湖北龙源石膏有限公司 | α型高强石膏粉的制备方法 |
CN104989448A (zh) * | 2015-06-24 | 2015-10-21 | 山西晋城无烟煤矿业集团有限责任公司 | 瓦斯抽放双层自动放水器 |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3816513C3 (de) * | 1987-05-22 | 1998-10-01 | Pro Mineral Ges | Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung |
DE4039319A1 (de) * | 1990-12-10 | 1992-06-11 | Sicowa Verfahrenstech | Verfahren zum herstellen von gipsbaustoffen |
DE4108089A1 (de) * | 1991-03-13 | 1992-09-17 | Josef Kempa | Verfahren zum binden und beseitigen von oel auf damit kontaminierten flaechen |
DE4217978A1 (de) * | 1992-05-30 | 1993-12-02 | Heidelberger Zement Ag | Verfahren zur Herstellung von ALPHA-Halbhydrat aus Calciumsulfat-Dihydrat in einem Reaktor |
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 |
DE4342927C1 (de) * | 1993-12-16 | 1995-03-09 | Sicowa Verfahrenstech | Bindemittel für einen Innenputz |
DE9420715U1 (de) * | 1994-12-24 | 1995-02-09 | FUSSBODEN MENKEL Karlheinz Menkel GmbH & Co. KG, 42109 Wuppertal | Hohlraumboden |
DE19627251C2 (de) * | 1996-07-08 | 1998-07-02 | Sicowa Verfahrenstech | Verfahren zur Herstellung von praktisch phasenreinem Calciumsulfat-Alpha-Halbhydrat |
DE19737778C2 (de) * | 1997-08-29 | 2002-06-20 | Sicowa Verfahrenstech | Verfahren zur Herstellung von Calciumsulfat-Alpha-Halbhydrat |
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 |
US6964704B2 (en) * | 2003-03-20 | 2005-11-15 | G.B. Technologies, Llc | Calcium sulphate-based composition and methods of making same |
JP4075709B2 (ja) * | 2003-07-02 | 2008-04-16 | 住友電装株式会社 | コネクタ |
CN1322966C (zh) * | 2004-07-22 | 2007-06-27 | 辽宁中田干燥设备制造有限公司 | 粉煤灰砖成型设备数控方法 |
US11306028B2 (en) | 2005-06-09 | 2022-04-19 | United States Gypsum Company | Light weight gypsum board |
US20110195241A1 (en) * | 2005-06-09 | 2011-08-11 | United States Gypsum Company | Low Weight and Density Fire-Resistant Gypsum Panel |
US7731794B2 (en) | 2005-06-09 | 2010-06-08 | United States Gypsum Company | High starch light weight gypsum wallboard |
USRE44070E1 (en) | 2005-06-09 | 2013-03-12 | United States Gypsum Company | Composite light weight gypsum wallboard |
US9802866B2 (en) | 2005-06-09 | 2017-10-31 | United States Gypsum Company | Light weight gypsum board |
US9840066B2 (en) * | 2005-06-09 | 2017-12-12 | United States Gypsum Company | Light weight gypsum board |
US11338548B2 (en) | 2005-06-09 | 2022-05-24 | United States Gypsum Company | Light weight gypsum board |
US7771851B2 (en) * | 2005-08-26 | 2010-08-10 | United States Gypsum Company | Gypsum-containing products containing alpha hemihydrate |
US8945462B2 (en) | 2006-06-29 | 2015-02-03 | Yoshino Gypsum Co., Ltd. | Methods for manufacturing a calcined gypsum and a gypsum board |
BRPI0717687B1 (pt) * | 2006-12-20 | 2019-06-18 | Gypsum Technologies Inc. | Processo para tratar sulfato de cálcio semi-hidratado beta |
DE102007024188B3 (de) | 2007-05-24 | 2008-04-10 | Grenzebach Bsh Gmbh | Verfahren zur Herstellung von Alpha-Calciumsulfat-Halbhydrat aus Calciumsulfat-Dihydrat und zugehörige Vorrichtung |
EP3345679A4 (de) * | 2015-09-04 | 2019-04-17 | Lion Corporation | Ethoxylierungskatalysator und herstellungsverfahren dafür |
TWI590842B (zh) * | 2016-07-12 | 2017-07-11 | 三鼎生物科技股份有限公司 | α-半水硫酸鈣骨移植材的製備方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1169355B (de) * | 1961-06-16 | 1964-04-30 | Knauf Geb | Verfahren zur Herstellung grossstueckiger Produkte aus feinkoernig anfallendem schwefel-saurem Kalzium, das in der chemischen Industrie abfaellt |
DE1927015B2 (de) * | 1968-05-28 | 1976-12-16 | Bpb Industries Ltd., London | Verfahren zur herstellung von alpha-hemihydrat-gips |
DE2658915A1 (de) * | 1976-12-24 | 1978-06-29 | Knauf Westdeutsche Gips | Verfahren zur herstellung von stueckigem calciumsulfat |
DE2951776A1 (de) * | 1979-12-21 | 1981-07-23 | Kozo Kawanishi Hyogo Shibata | Poroeses adsorptionsmittel, insbesondere fuer oele und fette |
DE3114363A1 (de) * | 1980-04-14 | 1982-03-04 | Idemitsu Kosan Co., Ltd., Tokyo | Verfahren zur herstellung von calciumsulfat-hemihydrat vom (alpha) -typ |
DE3117662A1 (de) * | 1981-05-05 | 1982-11-25 | Heinrich 4350 Recklinghausen Quante | Gipsstein- und gipssandsteinherstellung |
DE3502637A1 (de) * | 1985-01-26 | 1986-09-11 | Frank W. Dr.-Ing. 6600 Saarbrücken Fink | Verfahren zum kalzinieren von stueckigem rauchgasentschwefelungsgips mittels dampfeinwirkung |
DE3201853C2 (de) * | 1981-04-01 | 1987-09-10 | Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen, De |
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---|---|---|---|---|
US2448218A (en) * | 1942-12-17 | 1948-08-31 | British Plaster Board Ltd | Manufacture of plaster of paris |
DE800548C (de) * | 1948-10-02 | 1950-11-13 | Metallgesellschaft Akt Ges | Verfahren zur Herstellung von Baugips |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3908964A1 (de) * | 1987-09-25 | 1990-09-20 | Heinrich Graucob | Verfahren zur herstellung von schaumgips |
EP0662460A1 (de) * | 1993-12-16 | 1995-07-12 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Bindemittel für einen Innenputz |
EP2163532A1 (de) * | 2008-09-11 | 2010-03-17 | Claudius Peters Technologies GmbH | Verfahren und Anlage zur Herstellung von Hartgips |
US9340455B2 (en) | 2008-09-11 | 2016-05-17 | Claudius Peters Projects Gmbh | Method and system for the production of hard plaster |
CN103482892A (zh) * | 2013-09-17 | 2014-01-01 | 湖北龙源石膏有限公司 | α型高强石膏粉的制备方法 |
CN104989448A (zh) * | 2015-06-24 | 2015-10-21 | 山西晋城无烟煤矿业集团有限责任公司 | 瓦斯抽放双层自动放水器 |
Also Published As
Publication number | Publication date |
---|---|
DE3819652C3 (de) | 1996-08-01 |
DE3844938C2 (de) | 1996-09-19 |
DE3819652C2 (de) | 1990-07-05 |
WO1989010905A1 (en) | 1989-11-16 |
US5093093A (en) | 1992-03-03 |
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