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AU3294089A - Process for preparing calcium sulphate of elongated crystalline structure - Google Patents

Process for preparing calcium sulphate of elongated crystalline structure

Info

Publication number
AU3294089A
AU3294089A AU32940/89A AU3294089A AU3294089A AU 3294089 A AU3294089 A AU 3294089A AU 32940/89 A AU32940/89 A AU 32940/89A AU 3294089 A AU3294089 A AU 3294089A AU 3294089 A AU3294089 A AU 3294089A
Authority
AU
Australia
Prior art keywords
crystalline structure
calcium sulphate
preparing calcium
elongated crystalline
elongated
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.)
Granted
Application number
AU32940/89A
Other versions
AU620857B2 (en
Inventor
Alain Petit
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.)
Imerys Aluminates SA
Original Assignee
Lafarge Coppee SA
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 Lafarge Coppee SA filed Critical Lafarge Coppee SA
Publication of AU3294089A publication Critical patent/AU3294089A/en
Application granted granted Critical
Publication of AU620857B2 publication Critical patent/AU620857B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/46—Non-siliceous fibres, e.g. from metal oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • 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
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
AU32940/89A 1988-03-24 1989-03-21 Process for preparing calcium sulphate of elongated crystalline structure Ceased AU620857B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804338A FR2629069B1 (en) 1988-03-24 1988-03-24 PROCESS FOR THE PREPARATION OF CALCIUM SULPHATE WITH A LONGLINE CRYSTALLINE STRUCTURE HAVING A LENGTH AND A FACTOR OF MASTERED SHAPE
FR8804338 1988-03-24

Publications (2)

Publication Number Publication Date
AU3294089A true AU3294089A (en) 1989-10-16
AU620857B2 AU620857B2 (en) 1992-02-27

Family

ID=9364875

Family Applications (1)

Application Number Title Priority Date Filing Date
AU32940/89A Ceased AU620857B2 (en) 1988-03-24 1989-03-21 Process for preparing calcium sulphate of elongated crystalline structure

Country Status (7)

Country Link
EP (1) EP0334292A1 (en)
JP (1) JPH02504262A (en)
AU (1) AU620857B2 (en)
BR (1) BR8906477A (en)
FI (1) FI895621A7 (en)
FR (1) FR2629069B1 (en)
WO (1) WO1989009187A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647433B1 (en) * 1989-05-23 1991-10-31 Lafarge Coppee Da PROCESS FOR THE AQUEOUS PREPARATION OF PURIFIED CALCIUM SULFATE
ES2023766A6 (en) * 1990-10-09 1992-02-01 Cargas Blancas Inorganicas Sa Calcium sulphate di:hydrate paper filler prepn.
ES2095184B1 (en) * 1994-07-15 1997-09-01 Compania General Yesera S A PROCEDURE FOR THE OBTAINING OF A RADIAL LOAD ESPECIALLY FOR USE IN THE PAPER INDUSTRY, A LOAD PRODUCT FORMED BY CO-CRYSTALLIZATION OF ANHYDED CALCIUM SULPHATES AND HEMIHYDRATE AND A COMPOSITION USEFUL FOR THE PREPARATION OF SUCH LOAD.
FI20070093A0 (en) * 2007-02-02 2007-02-02 Kemira Oyj Plaster product and process for making the same
FI20105128L (en) 2010-02-10 2011-08-11 Kemira Oyj Method for preparing a pigment-fiber composite
FI20105502A7 (en) 2010-05-10 2011-11-11 Kemira Oyj Gypsum product

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530451A (en) * 1975-01-22 1978-11-01 Bpb Industries Ltd Production of gypsum from by-product calcium sulphate
DE2729842B2 (en) * 1977-07-01 1979-05-23 Skw Trostberg Ag, 8223 Trostberg Process for the production of inorganic fibers based on calcium sulfate
JPS5499099A (en) * 1978-01-20 1979-08-04 Kuraray Co Ltd Production of gypsum fine powder
US4286995A (en) * 1980-03-27 1981-09-01 National Gypsum Company Mica-free joint compound
FI814197A7 (en) * 1981-01-02 1982-07-03 Enriqueta Galceran Vila Method for preparing and using a crystalline product.
US4801355A (en) * 1987-01-16 1989-01-31 United States Gypsum Company Tabular acicular gypsum and method of filling paper

Also Published As

Publication number Publication date
FR2629069A1 (en) 1989-09-29
FI895621A0 (en) 1989-11-24
FI895621A7 (en) 1989-11-24
BR8906477A (en) 1990-11-27
FR2629069B1 (en) 1990-11-23
EP0334292A1 (en) 1989-09-27
WO1989009187A1 (en) 1989-10-05
AU620857B2 (en) 1992-02-27
JPH02504262A (en) 1990-12-06

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