CA1175209A - Continuous process for the production of light-weight calcium sulfate - Google Patents

Continuous process for the production of light-weight calcium sulfate

Info

Publication number
CA1175209A
CA1175209A CA000374609A CA374609A CA1175209A CA 1175209 A CA1175209 A CA 1175209A CA 000374609 A CA000374609 A CA 000374609A CA 374609 A CA374609 A CA 374609A CA 1175209 A CA1175209 A CA 1175209A
Authority
CA
Canada
Prior art keywords
calcium sulfate
slurry
reactor
acid
aqueous slurry
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
CA000374609A
Other languages
English (en)
French (fr)
Inventor
Hiroshi Nishitani
Toshikuni Minahara
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co 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 Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Application granted granted Critical
Publication of CA1175209A publication Critical patent/CA1175209A/en
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
    • C01F11/466—Conversion of one form of calcium sulfate to another
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • 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
    • C01P2006/10—Solid density

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
CA000374609A 1980-04-14 1981-04-03 Continuous process for the production of light-weight calcium sulfate Expired CA1175209A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4803780A JPS56145116A (en) 1980-04-14 1980-04-14 Continuous preparation of light gypsum
JP48037/1980 1980-04-14

Publications (1)

Publication Number Publication Date
CA1175209A true CA1175209A (en) 1984-10-02

Family

ID=12792108

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000374609A Expired CA1175209A (en) 1980-04-14 1981-04-03 Continuous process for the production of light-weight calcium sulfate

Country Status (6)

Country Link
JP (1) JPS56145116A (enrdf_load_stackoverflow)
CA (1) CA1175209A (enrdf_load_stackoverflow)
DE (1) DE3114363C2 (enrdf_load_stackoverflow)
FR (1) FR2480267A1 (enrdf_load_stackoverflow)
GB (1) GB2076791B (enrdf_load_stackoverflow)
IT (1) IT1170883B (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239669A1 (de) * 1982-10-27 1984-05-03 Joh. A. Benckiser Gmbh, 6700 Ludwigshafen Kontinuierliches verfahren zur gewinnung von industriell verwertbarem gips aus industrie-abfallgips
DE3536321A1 (de) * 1985-10-11 1987-04-23 Bischoff Gasreinigung Verfahren und reaktor fuer die herstellung von alphahalbhydratgips aus calciumsulfatdihydrat von nach dem nasswaschverfahren mit kalk arbeitenden rauchgasentschwefelungsanlagen
DE3615739A1 (de) * 1986-05-09 1987-11-12 Benckiser Gmbh Joh A Kontinuierliches verfahren und vorrichtung zur gewinnung von industriell verwertbarem gips aus industrieabfallgips
DE3711367A1 (de) * 1987-04-04 1988-10-13 Rwk Rhein Westfael Kalkwerke Verfahren zur herstellung von calciumsulfat-halbhydrat
DE3844938C2 (de) * 1987-05-22 1996-09-19 Pro Mineral Ges Verfahren zur Erzeugung von Calciumsulfat-Alphahalbhydrat aus feinteiligem Calciumsulfat und dessen Verwendung
JPH03504596A (ja) * 1989-03-16 1991-10-09 ユナイテツド　ステイツ　ジプサム　カンパニー 硫酸カルシウム・マイクロフアイバの製造方法及び装置
US7765813B2 (en) * 2004-07-15 2010-08-03 United States Gypsum Company Apparatus and process for cooling and de-steaming calcined stucco
CN103723757B (zh) * 2012-10-10 2015-08-05 深圳兰度生物材料有限公司 医用级α-半水硫酸钙制备方法
EP3782725A1 (en) * 2019-08-21 2021-02-24 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk Onderzoek TNO Reactor for the hydrothermal treatment of biomass

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051849A (enrdf_load_stackoverflow) * 1963-12-03
GB1198807A (en) * 1963-12-03 1970-07-15 Ici Ltd Continuous process for the production of calcium sulphate alpha-hemihydrate from gypsum
US3977890A (en) * 1972-08-16 1976-08-31 Johns-Manville Corporation Method for the preparation of fibrous calcium sulfate hemihydrate
JPS5143833A (ja) * 1974-10-11 1976-04-14 Nishida Marine Boiler Kifukugeetosochi
JPS5187494A (en) * 1975-01-31 1976-07-31 Idemitsu Kosan Co Setsukoisukaano seizohoho
JPS5319366A (en) * 1976-08-06 1978-02-22 Mitsubishi Chem Ind Ltd Resin compositions
JPS5817132B2 (ja) * 1976-11-29 1983-04-05 出光興産株式会社 球状セツコウおよびその製造方法
JPS53128624A (en) * 1977-04-16 1978-11-09 Idemitsu Kosan Co Gypsum compound
US4152408A (en) * 1977-11-25 1979-05-01 Certain-Teed Corporation Fibrous calcium sulfate
JPS5857384B2 (ja) * 1978-04-04 1983-12-20 株式会社クボタ 石こうの焼成方法並びに装置
JPS54152692A (en) * 1978-05-22 1979-12-01 Kanegafuchi Chem Ind Co Ltd Continuous manufacture of gypsum needle-like crystal

Also Published As

Publication number Publication date
GB2076791B (en) 1983-03-09
FR2480267A1 (fr) 1981-10-16
DE3114363C2 (de) 1985-12-05
DE3114363A1 (de) 1982-03-04
FR2480267B1 (enrdf_load_stackoverflow) 1984-12-28
JPS6320785B2 (enrdf_load_stackoverflow) 1988-04-30
GB2076791A (en) 1981-12-09
JPS56145116A (en) 1981-11-11
IT1170883B (it) 1987-06-03
IT8148251A0 (it) 1981-04-10

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