NL7812109A - Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze. - Google Patents

Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze. Download PDF

Info

Publication number
NL7812109A
NL7812109A NL7812109A NL7812109A NL7812109A NL 7812109 A NL7812109 A NL 7812109A NL 7812109 A NL7812109 A NL 7812109A NL 7812109 A NL7812109 A NL 7812109A NL 7812109 A NL7812109 A NL 7812109A
Authority
NL
Netherlands
Prior art keywords
recrystallization
calcium sulphate
anhydrite
preparation
calcium sulfate
Prior art date
Application number
NL7812109A
Other languages
English (en)
Dutch (nl)
Original Assignee
Stamicarbon
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 Stamicarbon filed Critical Stamicarbon
Priority to NL7812109A priority Critical patent/NL7812109A/nl
Priority to JP15905079A priority patent/JPS5580720A/ja
Priority to SU792851660A priority patent/SU952100A3/ru
Priority to EP79200754A priority patent/EP0012487B1/en
Priority to ES486803A priority patent/ES486803A1/es
Priority to DE7979200754T priority patent/DE2962749D1/de
Priority to AT79200754T priority patent/ATE957T1/de
Priority to DD79217647A priority patent/DD147938A5/de
Priority to IE2402/79A priority patent/IE49233B1/en
Priority to IN580/CAL/80A priority patent/IN154049B/en
Publication of NL7812109A publication Critical patent/NL7812109A/nl
Priority to US06/257,475 priority patent/US4387083A/en

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
    • C04B11/05—Calcium sulfate cements obtaining anhydrite, e.g. Keene's cement
    • 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
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/025—Calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
NL7812109A 1978-12-13 1978-12-13 Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze. NL7812109A (nl)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL7812109A NL7812109A (nl) 1978-12-13 1978-12-13 Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze.
JP15905079A JPS5580720A (en) 1978-12-13 1979-12-07 Manufacture of calcium sulfate anhydrite and calcium sulfate anhydrite thereby
DE7979200754T DE2962749D1 (en) 1978-12-13 1979-12-12 Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process
EP79200754A EP0012487B1 (en) 1978-12-13 1979-12-12 Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process
ES486803A ES486803A1 (es) 1978-12-13 1979-12-12 Un procedimiento para la preparacion de sulfato de calcio anhidrita
SU792851660A SU952100A3 (ru) 1978-12-13 1979-12-12 Способ получени ангидрита сульфата кальци
AT79200754T ATE957T1 (de) 1978-12-13 1979-12-12 Verfahren zur herstellung von calciumsulfat-anhydrit und nach diesem verfahren erhaltenes calciumsulfat-anhydrit.
DD79217647A DD147938A5 (de) 1978-12-13 1979-12-13 Verfahren zur herstellung von calciumsulfatanhydrit
IE2402/79A IE49233B1 (en) 1978-12-13 1979-12-21 Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process
IN580/CAL/80A IN154049B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-12-13 1980-05-15
US06/257,475 US4387083A (en) 1978-12-13 1981-04-24 Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7812109 1978-12-13
NL7812109A NL7812109A (nl) 1978-12-13 1978-12-13 Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze.

Publications (1)

Publication Number Publication Date
NL7812109A true NL7812109A (nl) 1980-06-17

Family

ID=19832061

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7812109A NL7812109A (nl) 1978-12-13 1978-12-13 Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze.

Country Status (11)

Country Link
US (1) US4387083A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0012487B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5580720A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE957T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD147938A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2962749D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES486803A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IE (1) IE49233B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN154049B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7812109A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU952100A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044120A3 (en) * 1980-07-15 1982-01-27 Stamicarbon B.V. Process for the preparation of phosphoric acid and calcium sulphate anhydrite as well as phosphoric acid and calcium sulphate anhydrite obtained by this process

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044005B1 (de) * 1980-07-14 1984-09-26 HIS Handels- und Industriebedarf GmbH Herstellung von Gipshalbhydrat mit Wärmemüll, wässriger H2SO4 und schwefelsauren Salzen
US4452770A (en) * 1981-12-14 1984-06-05 United States Gypsum Company Phosphoanhydrite process
SE440069B (sv) * 1982-12-22 1985-07-15 Boliden Ab Forfarande for omkristallisation av gips
SE8302591L (sv) * 1983-05-06 1984-11-07 Boliden Ab Forfarande for framstellning av fibergips (ii)
SE8302592L (sv) * 1983-05-06 1984-11-07 Boliden Ab Forfarande for framstellning av fibergips (iii)
DE3762605D1 (de) * 1986-02-20 1990-06-13 Knauf Westdeutsche Gips Verfahren zur herstellung von calciumsulfat-anhydrit und abbindefaehigen calciumsulfaten.
US5169444A (en) * 1986-02-20 1992-12-08 Gebruder Knauf Westdeutsche Gipswerke Kg Process for preparing calcium sulfate anhydrite
DE3605393C1 (en) * 1986-02-20 1987-09-03 Knauf Westdeutsche Gips Process for the preparation of anhydrous calcium sulphate (anhydrite)
DE3714035A1 (de) * 1986-07-25 1988-11-24 Knauf Westdeutsche Gips Verfahren zur herstellung von abbindefaehigen calciumsulfaten und ihre verwendung
GB8701263D0 (en) * 1987-01-21 1987-02-25 Ecc Int Ltd Forming concentrated aqueous suspension
FR2658075B1 (fr) * 1990-02-14 1992-05-07 Oreal Composition cosmetique filtrante photostable contenant un filtre uv-a et un beta,beta-diphenylacrylate ou alpha-cyano-beta,beta-diphenylacrylate d'alkyle.
US5964940A (en) * 1998-04-20 1999-10-12 Wilson; Harold W. Process for increasing the water solubility of gypsum
US7556791B2 (en) * 2006-12-20 2009-07-07 United States Gypsum Company Gypsum anhydrite fillers and process for making same
CN102634843B (zh) * 2012-04-27 2015-04-22 昆明理工大学 一种磷石膏制取微米级硫酸钙颗粒和晶须的方法
DE102020100241A1 (de) * 2020-01-08 2021-07-08 Thyssenkrupp Ag Verfahren zur Herstellung von Phosphorsäure und Klinkerprozess-geeigneter Kalziumsulfatqualität zur kommerziellen und industriellen Verwertung von Kalziumsulfat
CN113603128B (zh) * 2021-09-08 2024-11-22 西南科技大学 工业副产石膏制备多种硫酸钙粉体的方法以及硫酸钙粉体
CN113772709B (zh) * 2021-09-30 2023-05-30 贵州大学 一种利用磷石膏制备无水微米硫酸钙的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2021910A (en) * 1935-11-26 Preparation of calcium sulphate
US2006342A (en) * 1934-05-18 1935-07-02 Krebs Pigment & Color Corp Process of making anhydrite
US2151339A (en) * 1935-04-20 1939-03-21 Du Pont Process of making calcium sulphate
US2197953A (en) * 1937-12-02 1940-04-23 Du Pont Process for making anhydrite
GB561205A (en) * 1942-07-13 1944-05-10 Francis Robert Himsworth Improvements in or relating to the production of gypsum from anhydrite
GB848617A (en) * 1957-12-26 1960-09-21 Nat Lead Co Improvements in or relating to the preparation of anhydrite
US2956859A (en) * 1957-12-26 1960-10-18 Nat Lead Co Preparation of anhydrite
US2999007A (en) * 1958-07-29 1961-09-05 American Cyanamid Co Process of preparing anhydrite of improved whiteness from off-white gypsum
GB1101771A (en) * 1963-08-14 1968-01-31 Bpb Industries Ltd Improvements relating to the production of gypsum plaster
IL23004A (en) * 1964-02-27 1969-03-27 Fosindus Co Process for the purification of residual gypsum produced in the manufacture of phosphoric acid by the reaction of sulphuric acid with natural phosphates
GB1081895A (en) * 1965-11-09 1967-09-06 Occidental Res & Eng Improvements relating to the production of phosphoric acids
US4146568A (en) * 1977-08-01 1979-03-27 Olin Corporation Process for reducing radioactive contamination in waste product gypsum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044120A3 (en) * 1980-07-15 1982-01-27 Stamicarbon B.V. Process for the preparation of phosphoric acid and calcium sulphate anhydrite as well as phosphoric acid and calcium sulphate anhydrite obtained by this process

Also Published As

Publication number Publication date
ATE957T1 (de) 1982-05-15
IN154049B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1984-09-15
IE792402L (en) 1980-06-13
US4387083A (en) 1983-06-07
IE49233B1 (en) 1985-09-04
EP0012487A1 (en) 1980-06-25
DE2962749D1 (en) 1982-06-24
DD147938A5 (de) 1981-04-29
SU952100A3 (ru) 1982-08-15
ES486803A1 (es) 1980-06-16
JPS5580720A (en) 1980-06-18
EP0012487B1 (en) 1982-05-05

Similar Documents

Publication Publication Date Title
NL7812109A (nl) Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze.
DE2519122C2 (de) Verfahren zur Herstellung von α-Calciumsulfathalbhydrat
US4164550A (en) Production of stabilized wet process phosphoric acid
DE2625248A1 (de) Verfahren zur behandlung von soleschlamm
EP0012488B1 (en) Process for the preparation of calcium sulphate hemihydrate and calcium sulphate hemihydrate obtained by this process
DE2606792C3 (de) Verfahren zur Herstellung von agglomerierten Vanadinsuboxiden
KR870001377B1 (ko) 인산염암으로부터 인산과 황산칼슘을 제조하는 공정(Phosphoanhydrite Process)
EP0044120B1 (en) Process for the preparation of phosphoric acid and calcium sulphate anhydrite
US4710366A (en) Method for producing stabilized wet process phosphoric acid with low content of magnesium and aluminum
US3708275A (en) Manufacture of alkali metal phosphates
US3615189A (en) Process for preparing gypsum hemihydrate
NL8003307A (nl) Werkwijze voor het winnen van calciumverbindingen en zwaveldioxide uit calciumsulfaat, en calciumverbin- dingen en zwaveldioxide verkregen volgens deze werk- wijze.
EP0004670A1 (de) Verfahren zur kontinuierlichen Herstellung von Aluminiumfluorid
NL8005924A (nl) Werkwijze voor de bereiding van fosforzuur langs natte weg.
US4462972A (en) Method for producing fertilizer-grade phosphoric acid
CA1045340A (en) Process for the manufacture of stabilised, hardenable calcium sulphate by reacting crude phosphate with sulphuric acid
IL26394A (en) Process for the preparation of phosphoric acid and gypsum from phosphate rock
US4226842A (en) Preparation of crystalline cryolite
AU768441B2 (en) Method for treating fertilizer process solutions
EP0076551B1 (en) Process for the preparation of calcium sulphate anhydrite
EP0021474A1 (en) Process for preparing calcium sulphate hemihydrate, and hemihydrate so obtained
FI80252C (fi) Foerfarande foer framstaellning av kalciumsulfat innehaollande praktiskt taget ingen kadmium och kalciumsulfat framstaelld med detta foerfarande.
WO2025040609A1 (en) Process for producing dicalcium phosphate feed with low fluoride content
FI119929B (fi) Menetelmä kipsin vaaleuden parantamiseksi
SU1357348A1 (ru) Способ получени фосфора

Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed