ES437314A1 - Procedimiento para preparar sulfato calcico alfa-semihidrata-do. - Google Patents

Procedimiento para preparar sulfato calcico alfa-semihidrata-do.

Info

Publication number
ES437314A1
ES437314A1 ES437314A ES437314A ES437314A1 ES 437314 A1 ES437314 A1 ES 437314A1 ES 437314 A ES437314 A ES 437314A ES 437314 A ES437314 A ES 437314A ES 437314 A1 ES437314 A1 ES 437314A1
Authority
ES
Spain
Prior art keywords
manufacture
calcium sulphate
hemihydrate
calcium
sulphate
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
ES437314A
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
Publication of ES437314A1 publication Critical patent/ES437314A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
ES437314A 1974-05-03 1975-04-30 Procedimiento para preparar sulfato calcico alfa-semihidrata-do. Expired ES437314A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19444/74A GB1496683A (en) 1974-05-03 1974-05-03 Manufacture of calcium sulphate alphahemihydrate

Publications (1)

Publication Number Publication Date
ES437314A1 true ES437314A1 (es) 1977-02-01

Family

ID=10129491

Family Applications (1)

Application Number Title Priority Date Filing Date
ES437314A Expired ES437314A1 (es) 1974-05-03 1975-04-30 Procedimiento para preparar sulfato calcico alfa-semihidrata-do.

Country Status (11)

Country Link
US (1) US4120737A (es)
JP (1) JPS5731531B2 (es)
BE (1) BE828278A (es)
CA (1) CA1070926A (es)
DE (1) DE2519122C2 (es)
ES (1) ES437314A1 (es)
FR (1) FR2269501B1 (es)
GB (1) GB1496683A (es)
IN (1) IN144322B (es)
IT (1) IT1037793B (es)
NL (1) NL7504742A (es)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1546586A (en) * 1975-06-04 1979-05-23 Ici Ltd Treatment of ammonnia cosa effluent
GB1545789A (en) * 1975-06-04 1979-05-16 Ici Ltd Manufacture of calcium carbonate magnesium bicarbonate magnesium carbonate and calcium sulphate
DE2621611C3 (de) * 1976-05-14 1981-06-25 Skw Trostberg Ag, 8223 Trostberg Anorganische Fasern, Verfahren zu deren Herstellung sowie deren Verwendung
DE2820357A1 (de) * 1978-05-10 1979-11-15 Metallgesellschaft Ag Verfahren zum entfernen von schwefeloxiden aus verbrennungsabgasen
DE3108444A1 (de) * 1981-03-06 1983-01-20 Vereinigte Elektrizitätswerke Westfalen AG, 4600 Dortmund Verfahren und anlage zum aufbereiten von chloride enthaltenden abwaessern
US4337238A (en) * 1981-05-18 1982-06-29 Iowa State University Research Foundation, Inc. Method of growth of primary anhydrite crystals under moderate conditions
WO1985000035A1 (en) * 1983-06-17 1985-01-03 Monier Limited Ceramic material
DE3534390A1 (de) * 1985-09-24 1987-04-02 Mannesmann Ag Verfahren zur herstellung von calciumsulfat - alpha - halbhydrat aus calciumsulfat-dihydrat
AT391465B (de) * 1986-08-26 1990-10-10 Donau Chemie Ag Verfahren zur verarbeitung von chloridreichem rauchgasentschwefelungsmaterial (rea-material) zu zementklinker
US5248487A (en) * 1987-03-21 1993-09-28 Jorg Bold Process for the conversion of calcium sulfate dihydrate into alpha-hemihydrate
FR2638108B1 (fr) * 1988-10-26 1991-02-08 Solvay Procede pour eliminer un residu comprenant du sulfate de sodium
DE4008084A1 (de) * 1990-03-14 1991-09-19 Pro Mineral Ges Verfahren zur herstellung von gipsfaserplatten, insbesondere von fussbodenplatten
AU4359093A (en) * 1992-05-27 1993-12-30 Purac Biochem B.V. Direct formation of alpha-calcium sulfate hemihydrate under atmospheric pressure
US5422015A (en) * 1992-07-30 1995-06-06 Hondo Chemical, Inc. Pathogenic waste treatment
US5945182A (en) * 1995-02-14 1999-08-31 G-P Gypsum Corporation Fire-resistant members containing gypsum fiberboard
US5601888A (en) * 1995-02-14 1997-02-11 Georgia-Pacific Corporation Fire-resistant members containing gypsum fiberboard
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
US7700066B1 (en) * 2008-10-03 2010-04-20 Taipei Medical University Process for preparing alpha calcium sulfate hemihydrate
US8793897B2 (en) * 2010-08-11 2014-08-05 Grenzebach Bsh Gmbh Process and device for stabilising, cooling and dehumidifying gypsum plaster
CA3012594C (en) * 2016-02-02 2023-01-03 Yoshino Gypsum Co., Ltd. Calcined gypsum treatment device and calcined gypsum treatment method
US9783428B1 (en) * 2016-04-06 2017-10-10 The Royal Institution For The Advancement Of Learning/Mcgill Univerisity Production of high strength hydrochloric acid from calcium chloride feed streams by crystallization
AU2016202157B2 (en) * 2016-04-06 2019-05-16 The Royal Institution For The Advancement Of Learning / Mcgill University Production of high strength hydrochloric acid from calcium chloride feed streams by crystallization
US10777984B1 (en) * 2019-06-03 2020-09-15 Richard M. Elbert Pre-wired junction box with quick-connect clip electrical wire connectors
CN113603127B (zh) * 2021-08-18 2023-01-03 一夫科技股份有限公司 一种氯化钙废水的浓硫酸处理及联产化学石膏的方法
CN115159878B (zh) * 2022-05-26 2023-10-27 中南大学 盐溶液循环制备α-半水石膏的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US601006A (en) * 1898-03-22 sturcke
US2413799A (en) * 1944-06-23 1947-01-07 Du Pont Production of calcium sulfate
US3302997A (en) * 1964-07-31 1967-02-07 Gen Refractories Co Preparation of magnesium oxide from magnesite
US3615189A (en) * 1969-06-09 1971-10-26 Central Glass Co Ltd Process for preparing gypsum hemihydrate
CS150396B1 (es) * 1970-12-21 1973-09-04

Also Published As

Publication number Publication date
US4120737A (en) 1978-10-17
FR2269501A1 (es) 1975-11-28
JPS50151796A (es) 1975-12-05
JPS5731531B2 (es) 1982-07-05
NL7504742A (nl) 1975-11-05
DE2519122A1 (de) 1975-11-20
IT1037793B (it) 1979-11-20
BE828278A (fr) 1975-10-23
AU8057875A (en) 1976-11-04
IN144322B (es) 1978-04-29
DE2519122C2 (de) 1985-02-28
GB1496683A (en) 1977-12-30
CA1070926A (en) 1980-02-05
FR2269501B1 (es) 1983-04-15

Similar Documents

Publication Publication Date Title
ES437314A1 (es) Procedimiento para preparar sulfato calcico alfa-semihidrata-do.
GB1520784A (en) Process for the purification of electrolysis brine
ES474824A1 (es) Un metodo de preparar una fibra de sulfato calcico dispersa-ble
ES8301849A1 (es) Procedimiento e instalacion para la preparacion de yeso se- mihidratado alfa
ES465644A1 (es) Un procedimiento para la produccion de dioxido de cloro.
GB1521511A (en) Production of hydrogen fluoride and alkali metal or alkaline earth metal sulphate
EP0584502A3 (en) Process for the spontaneous precipitation of sulfates dissolved in water as calcium aluminium sulfate and the application of this process for the preparation of low-chloride gypsum-anhydrite containing aluminium oxide
GB2011363A (en) Production of calcium sulfate
ATE52238T1 (de) Verfahren zur herstellung von kaliumdihydrogenphosphat.
NO861637L (no) Fremgangsmaate for fremstilling av faste aluminiumkloridsammensetninger.
GB1328357A (en) Wet process for the manufacture of phosphoric acid and caldium sulphate
IL57973A0 (en) Process for obtaining gaseous hydrogen chloride from dilute aqueous hydrochloric acid
DE2965549D1 (en) Process for the preparation of calcium sulphate hemihydrate and calcium sulphate hemihydrate obtained by this process
US4026990A (en) Production of low-fluorine gypsum as a by-product in a phosphoric acid process
IL78325A0 (en) Process for the manufacture of pure phosphate salts
GB1248885A (en) Manufacture of cement clinker
SE8501615D0 (sv) Process for preparing chlorine dioxide
GB836928A (en) Improvements in or relating to the manufacture of alkali metal aluminium fluorides
GB1486759A (en) Chemical process
KR960013993A (ko) 이수(二水)석고의 제조방법
JPS5527877A (en) Production of high purity calcium secondary phosphate and ammonium chloride
GB1209911A (en) Manufacture of phosphoric acid
JPS55167127A (en) Continuously converting method for anhydrous gypsum into gypsum
ES457127A1 (es) Procedimiento para recuperar hierro de un lodo de hierro quecontiene una mezcla de yeso e hidroxido ferrico.
GB1272629A (en) Process for the manufacture of phosphoric acid