BE1002661A3 - Procede pour la fabrication de semi-hydrate de sulfate de calcium. - Google Patents

Procede pour la fabrication de semi-hydrate de sulfate de calcium. Download PDF

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Publication number
BE1002661A3
BE1002661A3 BE8800375A BE8800375A BE1002661A3 BE 1002661 A3 BE1002661 A3 BE 1002661A3 BE 8800375 A BE8800375 A BE 8800375A BE 8800375 A BE8800375 A BE 8800375A BE 1002661 A3 BE1002661 A3 BE 1002661A3
Authority
BE
Belgium
Prior art keywords
hydrate
manufacture
calcium sulfate
autoclave
dihydrate
Prior art date
Application number
BE8800375A
Other languages
English (en)
French (fr)
Original Assignee
Rwk Rhein Westfael Kalkwerke
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rwk Rhein Westfael Kalkwerke filed Critical Rwk Rhein Westfael Kalkwerke
Application granted granted Critical
Publication of BE1002661A3 publication Critical patent/BE1002661A3/fr

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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
    • C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
    • C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
    • 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
    • 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
    • C04B28/142—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 synthetic or waste calcium sulfate cements
    • C04B28/144—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 synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BE8800375A 1987-04-04 1988-03-31 Procede pour la fabrication de semi-hydrate de sulfate de calcium. BE1002661A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873711367 DE3711367A1 (de) 1987-04-04 1987-04-04 Verfahren zur herstellung von calciumsulfat-halbhydrat

Publications (1)

Publication Number Publication Date
BE1002661A3 true BE1002661A3 (fr) 1991-04-30

Family

ID=6324859

Family Applications (1)

Application Number Title Priority Date Filing Date
BE8800375A BE1002661A3 (fr) 1987-04-04 1988-03-31 Procede pour la fabrication de semi-hydrate de sulfate de calcium.

Country Status (5)

Country Link
BE (1) BE1002661A3 (en, 2012)
DE (1) DE3711367A1 (en, 2012)
FR (1) FR2613346B1 (en, 2012)
LU (1) LU87158A1 (en, 2012)
NL (1) NL8800727A (en, 2012)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800794A1 (de) * 1988-01-14 1989-07-27 Rwk Rhein Westfael Kalkwerke Verfahren und anlage zur herstellung von calciumsulfat-halbhydrat in alpha-konfiguration
DE3927927A1 (de) * 1989-08-24 1991-02-28 Rwk Rhein Westfael Kalkwerke Verfahren zur herstellung von faserbewehrten formteilen auf gipsbasis
DE4217978A1 (de) * 1992-05-30 1993-12-02 Heidelberger Zement Ag Verfahren zur Herstellung von ALPHA-Halbhydrat aus Calciumsulfat-Dihydrat in einem Reaktor
DE4409219C2 (de) * 1994-03-18 1997-03-27 Salzgitter Anlagenbau Verfahren zur kontinuierlichen Herstellung von alpha-Calciumsulfat-Halbhydrat aus Calciumsulfat-Dihydrat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282091A (en) * 1938-10-17 1942-05-05 Oliver F Redd Process for preparing calcined gypsum
US3527447A (en) * 1968-12-23 1970-09-08 United States Gypsum Co Process for the preparation of calcined gypsum
JPS5260293A (en) * 1975-11-12 1977-05-18 Mitsui Toatsu Chem Inc Method for continuous production of alpha-gypsum hemihydrate
FR2480267A1 (fr) * 1980-04-14 1981-10-16 Idemitsu Kosan Co Procede continu pour la production de sulfate de calcium de faible masse specifique
FR2503694A1 (fr) * 1981-04-10 1982-10-15 Knauf Westdeutsche Gips Melange a plusieurs composants donnant lieu a prise hydraulique et son utilisation en tant que materiau de second oeuvre et de remblayage dans l'exploitation miniere
EP0110128A2 (de) * 1982-10-27 1984-06-13 Joh. A. Benckiser GmbH Kontinuierliches Verfahren zur Gewinnung von industriell verwertbarem Gips aus Industrie-Abfallgips

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262083A (en) * 1968-05-28 1972-02-02 Bpb Industries Ltd alpha-CALCIUM SULPHATE HEMIHYDRATE
DE2310799A1 (de) * 1972-03-08 1973-09-13 United States Gypsum Co Verfahren zum herstellen von calciniertem gips mit geringer dichte
DE3109879A1 (de) * 1981-03-14 1982-09-23 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck "verfahren zur beseitigung von zwangslaeufig anfallenden abfallprodukten hinter kohlekraftwerken und deren nutzung unter verwendung von abfallwaerme aus dem kraftwerk zur herstellung von vorzugsweise dammbaustoffen fuer den untertaegigen bergbau"
DE3331838A1 (de) * 1983-09-03 1985-03-21 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Verfahren zur umsetzung des rueckstandes aus rauchgas-entschwefelungsanlagen zu alphahalbhydrat-gipskristallen
CA1258961A (en) * 1984-09-17 1989-09-05 Yoshihiko Kudo PROCESS FOR PRODUCING .alpha.-FORM GYPSUM HEMIHYDRATE
DE3502637A1 (de) * 1985-01-26 1986-09-11 Frank W. Dr.-Ing. 6600 Saarbrücken Fink Verfahren zum kalzinieren von stueckigem rauchgasentschwefelungsgips mittels dampfeinwirkung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282091A (en) * 1938-10-17 1942-05-05 Oliver F Redd Process for preparing calcined gypsum
US3527447A (en) * 1968-12-23 1970-09-08 United States Gypsum Co Process for the preparation of calcined gypsum
JPS5260293A (en) * 1975-11-12 1977-05-18 Mitsui Toatsu Chem Inc Method for continuous production of alpha-gypsum hemihydrate
FR2480267A1 (fr) * 1980-04-14 1981-10-16 Idemitsu Kosan Co Procede continu pour la production de sulfate de calcium de faible masse specifique
FR2503694A1 (fr) * 1981-04-10 1982-10-15 Knauf Westdeutsche Gips Melange a plusieurs composants donnant lieu a prise hydraulique et son utilisation en tant que materiau de second oeuvre et de remblayage dans l'exploitation miniere
EP0110128A2 (de) * 1982-10-27 1984-06-13 Joh. A. Benckiser GmbH Kontinuierliches Verfahren zur Gewinnung von industriell verwertbarem Gips aus Industrie-Abfallgips

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 88, 1978 Columbus, Ohio, & JP-A-52 060293 (Mitsui Toatsu Chemicals Inc.) 18-05-1977 page 229; ref. no. 54338B *

Also Published As

Publication number Publication date
LU87158A1 (de) 1988-08-23
DE3711367A1 (de) 1988-10-13
FR2613346B1 (fr) 1991-06-21
FR2613346A1 (fr) 1988-10-07
DE3711367C2 (en, 2012) 1989-01-19
NL8800727A (nl) 1988-11-01

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: CLEMENTI FRANZ

Effective date: 19930331