FR93737E - Procédé pour la fabrication continue de sulfate de calcium alpha-hémihydraté a partir du gypse. - Google Patents

Procédé pour la fabrication continue de sulfate de calcium alpha-hémihydraté a partir du gypse.

Info

Publication number
FR93737E
FR93737E FR136410A FR136410A FR93737E FR 93737 E FR93737 E FR 93737E FR 136410 A FR136410 A FR 136410A FR 136410 A FR136410 A FR 136410A FR 93737 E FR93737 E FR 93737E
Authority
FR
France
Prior art keywords
hemihydrate
gypsum
calcium sulfate
continuous manufacture
sulfate alpha
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
Application number
FR136410A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of FR93737E publication Critical patent/FR93737E/fr
Expired legal-status Critical Current

Links

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)
FR136410A 1963-12-03 1968-01-17 Procédé pour la fabrication continue de sulfate de calcium alpha-hémihydraté a partir du gypse. Expired FR93737E (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4767563 1963-12-03
GB2475/67A GB1198807A (en) 1963-12-03 1967-01-17 Continuous process for the production of calcium sulphate alpha-hemihydrate from gypsum

Publications (1)

Publication Number Publication Date
FR93737E true FR93737E (fr) 1969-05-09

Family

ID=39473233

Family Applications (1)

Application Number Title Priority Date Filing Date
FR136410A Expired FR93737E (fr) 1963-12-03 1968-01-17 Procédé pour la fabrication continue de sulfate de calcium alpha-hémihydraté a partir du gypse.

Country Status (4)

Country Link
US (1) US3576599A (fr)
DE (1) DE1646624A1 (fr)
FR (1) FR93737E (fr)
GB (1) GB1198807A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480267A1 (fr) * 1980-04-14 1981-10-16 Idemitsu Kosan Co Procede continu pour la production de sulfate de calcium de faible masse specifique

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956456A (en) * 1971-12-17 1976-05-11 National Gypsum Company Gypsum calcination
EP0085382A1 (fr) * 1982-02-01 1983-08-10 Quante, Heinrich Installation pour la préparation de alpha-sulfate de calcium demihydrate
EP0416089A4 (en) * 1989-03-16 1991-08-07 United States Gypsum Company Process and apparatus for producing calcium sulfate microfibers
GB9310891D0 (en) * 1993-05-26 1993-07-14 Tran Ind Res Inc Utilization of deinking sludge in building materials
DE4409219C2 (de) * 1994-03-18 1997-03-27 Salzgitter Anlagenbau Verfahren zur kontinuierlichen Herstellung von alpha-Calciumsulfat-Halbhydrat aus Calciumsulfat-Dihydrat
US5743954A (en) * 1995-02-02 1998-04-28 United States Gypsum Company Method for continuous refractoryless calcining of gypsum
US5743728A (en) * 1995-08-15 1998-04-28 Usg Corporation Method and system for multi-stage calcining of gypsum to produce an anhydrite product
US20050083173A1 (en) * 2003-10-20 2005-04-21 Konupek Ingrid H. Locking remote control
US7434980B2 (en) 2004-02-27 2008-10-14 United States Gypsum Company Swinging agitator for a gypsum calcining apparatus and the like
US7175426B2 (en) 2004-02-27 2007-02-13 United States Gypsum Company High efficiency refractoryless kettle
GB2497574B (en) * 2011-12-15 2019-10-02 Saint Gobain Placo Sas A method of forming a gypsum based product
US10023496B1 (en) 2017-06-16 2018-07-17 United States Gypsum Company No fiber calcination of gypsum for gypsum fiberboard
CN115959696B (zh) * 2022-12-02 2024-04-30 浙江浙能长兴发电有限公司 一种基于蒸汽直接加热的制备碳酸钙和硫酸铵的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480267A1 (fr) * 1980-04-14 1981-10-16 Idemitsu Kosan Co Procede continu pour la production de sulfate de calcium de faible masse specifique

Also Published As

Publication number Publication date
GB1198807A (en) 1970-07-15
US3576599A (en) 1971-04-27
DE1646624A1 (de) 1971-08-12

Similar Documents

Publication Publication Date Title
FR1416273A (fr) Procédé pour la fabrication continue du sulfate de calcium alpha-hémi-hydraté à partir du gypse
FR93737E (fr) Procédé pour la fabrication continue de sulfate de calcium alpha-hémihydraté a partir du gypse.
IL25128A (en) Process for the production of calcium sulphate alpha-hemihydrate crystals
FR1382792A (fr) Procédé pour la fabrication de chlorobromométhanes
FR2327972A1 (fr) Procede pour la production de gypse hemihydrate du type alpha
OA02091A (fr) Procédé pour la fabrication d'acide phosphorique et de sulfate de calcium hémihydrate par voie humide .
FR1408901A (fr) Procédé de fabrication d'embouts de raccords pour tuyaux
FR1397504A (fr) Procédé pour la fabrication de tuyaux flexibles renforcés
FR1428193A (fr) Procédé de fabrication de sulfate de calcium semi-hydraté à partir de pierre à plâtre
YU34505B (en) Process for producing anhydrous calcium sulfate, called anhydrite, starting from synthetic gypsum
FR1420157A (fr) Procédé pour la fabrication de catalyseurs
FR1411586A (fr) Procédé de fabrication de semi-hydrate de sulfate de calcium alpha à partir de dihydrate de sulfate de calcium synthétique
FR1310550A (fr) Procédé pour la production de sulfate de potassium à partir de kaïnite
FR1462227A (fr) Procédé pour la production d'un engrais
CH408746A (fr) Machine pour la fabrication de pièces en ciment d'amiante
FR1427069A (fr) Procédé perfectionné pour la fabrication des ciments blancs
FR1478016A (fr) Procédé de fabrication d'une solution de sulfate d'hydroxylamine
FR1428761A (fr) Procédé pour la fabrication de margarine
FR1418230A (fr) Procédé et installation pour la fabrication de ciment et produits analogues par filtration de pâte
AU426776B2 (en) Continuous process for the production of calcium sulphate alpha-hemihydrate from gypsum
AU3214668A (en) Continuous process for the production of calcium sulphate alpha-hemihydrate from gypsum
FR1353543A (fr) Procédé perfectionné pour la fabrication de chlore
FR1459139A (fr) Procédé pour la fabrication du sulfate de sodium
BE835710A (fr) Appareillage pour la fabrication de pieces moulees en platre a partir de l'alpha-hemihydrate de sulfate de calcium
AU289004B2 (en) Continuous process forthe production of calcium sulphate hemi-hydrate from gypsum