FR2423463A1 - ANHYDRITE FOR BINDER - Google Patents

ANHYDRITE FOR BINDER

Info

Publication number
FR2423463A1
FR2423463A1 FR7600678A FR7600678A FR2423463A1 FR 2423463 A1 FR2423463 A1 FR 2423463A1 FR 7600678 A FR7600678 A FR 7600678A FR 7600678 A FR7600678 A FR 7600678A FR 2423463 A1 FR2423463 A1 FR 2423463A1
Authority
FR
France
Prior art keywords
anhydrite
diameter
less
proportion
particles
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
FR7600678A
Other languages
French (fr)
Other versions
FR2423463B1 (en
Inventor
Roland Bachelard
Robert Barral
Maurice Lamalle
Robert Koeppel
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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann 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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Priority to FR7600678A priority Critical patent/FR2423463A1/en
Priority to IL51097A priority patent/IL51097A/en
Priority to MX167518A priority patent/MX144222A/en
Priority to BE1007859A priority patent/BE850090A/en
Priority to DE2700790A priority patent/DE2700790B2/en
Priority to LU76549A priority patent/LU76549A1/xx
Priority to SE7700256A priority patent/SE7700256L/en
Priority to BR7700202A priority patent/BR7700202A/en
Priority to NL7700251A priority patent/NL7700251A/en
Priority to JP197977A priority patent/JPS5290494A/en
Priority to GB1349/77A priority patent/GB1574623A/en
Priority to OA56249A priority patent/OA05734A/en
Priority to US05/891,836 priority patent/US4151000A/en
Publication of FR2423463A1 publication Critical patent/FR2423463A1/en
Application granted granted Critical
Publication of FR2423463B1 publication Critical patent/FR2423463B1/fr
Granted 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
    • C04B11/05—Calcium sulfate cements obtaining anhydrite, e.g. Keene's cement
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/14—Pore volume
    • 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
    • C01P2006/16—Pore diameter

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Anhydrite constitué par du CaSO4 anhydre obtenu à partir de phosphogypse résidu de la fabrication de l'acide phosphorique par le procédé en voie humide caractérisé par une teneur en CaSO4 de variété dite insoluble supérieure à 93 %, un volume poreux inférieur à 0,29 cc/g pour les pores de rayons inférieurs à 6,6 microns, une granulométrie comprenant une proportion de particules de diamètre inférieur à 10 mu , supérieure ou égale à 15 % en poids, et une proportion de particules de diamètre supérieur à 20 mu , supérieure ou égale à 20 % avec un diamètre médian compris entre 5 et 30 mu , et procédé de préparation de cet anhydrite. Liants et matériaux de construction préparés à partir de cet anhydrite.Anhydrite consisting of anhydrous CaSO4 obtained from phosphogypsum residue from the manufacture of phosphoric acid by the wet process characterized by a CaSO4 content of the so-called insoluble variety greater than 93%, a pore volume less than 0.29 cc / g for pores with radii less than 6.6 microns, a particle size comprising a proportion of particles of diameter less than 10 mu, greater than or equal to 15% by weight, and a proportion of particles of diameter greater than 20 mu, greater or equal to 20% with a median diameter between 5 and 30 mu, and process for the preparation of this anhydrite. Binders and building materials prepared from this anhydrite.

FR7600678A 1976-01-13 1976-01-13 ANHYDRITE FOR BINDER Granted FR2423463A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR7600678A FR2423463A1 (en) 1976-01-13 1976-01-13 ANHYDRITE FOR BINDER
IL51097A IL51097A (en) 1976-01-13 1976-12-13 Anhydrite from phosphogypsum process for its preparation and cement comprising it
MX167518A MX144222A (en) 1976-01-13 1977-01-03 IMPROVED PROCEDURE FOR THE PRODUCTION OF ANHYDRITE
BE1007859A BE850090A (en) 1976-01-13 1977-01-05 ANHYDRITE FOR BINDER
LU76549A LU76549A1 (en) 1976-01-13 1977-01-11
DE2700790A DE2700790B2 (en) 1976-01-13 1977-01-11 For the production of anhydrite which is suitable as an anhydrite binder and is obtained from chemical gypsum by dehydration and consists essentially of insoluble CaSO4
SE7700256A SE7700256L (en) 1976-01-13 1977-01-12 ANHYDRITE FOR BINDERS
BR7700202A BR7700202A (en) 1976-01-13 1977-01-12 ANYTHRITE CONSTITUTED BY CASE
NL7700251A NL7700251A (en) 1976-01-13 1977-01-12 PROCESS FOR PREPARING ANHYDRITE FOR A BINDING AGENT USE.
JP197977A JPS5290494A (en) 1976-01-13 1977-01-13 Anhydrous gypsum and its manufacturing process
GB1349/77A GB1574623A (en) 1976-01-13 1977-01-13 Anhydrite for use in binding agents
OA56249A OA05734A (en) 1976-01-13 1977-08-06 Anhydrite for binder
US05/891,836 US4151000A (en) 1976-01-13 1978-03-30 Anhydrite binder and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7600678A FR2423463A1 (en) 1976-01-13 1976-01-13 ANHYDRITE FOR BINDER

Publications (2)

Publication Number Publication Date
FR2423463A1 true FR2423463A1 (en) 1979-11-16
FR2423463B1 FR2423463B1 (en) 1980-10-10

Family

ID=9167836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7600678A Granted FR2423463A1 (en) 1976-01-13 1976-01-13 ANHYDRITE FOR BINDER

Country Status (12)

Country Link
JP (1) JPS5290494A (en)
BE (1) BE850090A (en)
BR (1) BR7700202A (en)
DE (1) DE2700790B2 (en)
FR (1) FR2423463A1 (en)
GB (1) GB1574623A (en)
IL (1) IL51097A (en)
LU (1) LU76549A1 (en)
MX (1) MX144222A (en)
NL (1) NL7700251A (en)
OA (1) OA05734A (en)
SE (1) SE7700256L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503450A1 (en) * 1991-03-08 1992-09-16 Gebr. Knauf Westdeutsche Gipswerke KG Dry powdery plaster composition

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3104751C2 (en) * 1981-02-11 1986-10-30 Mathis System-Technik GmbH, 7844 Neuenburg Process for preparing setting building material mixtures
DE3827612A1 (en) * 1988-08-13 1990-02-15 Viktor Dr Ing Gobiet Building material for use in underground operation
DE3827613A1 (en) * 1988-08-13 1990-02-15 Viktor Dr Ing Gobiet Binder and ready-mix mortar for anhydrite flow flooring and flow flooring therefrom
US6682913B1 (en) 1999-02-03 2004-01-27 Institute For Drug Research Ltd. Microbial process for preparing pravastatin
JP5553491B2 (en) * 2008-07-02 2014-07-16 株式会社トクヤマ How to recycle gypsum from gypsum board waste
JP5619797B2 (en) * 2012-02-17 2014-11-05 株式会社トクヤマ How to recycle gypsum from gypsum board waste

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503450A1 (en) * 1991-03-08 1992-09-16 Gebr. Knauf Westdeutsche Gipswerke KG Dry powdery plaster composition

Also Published As

Publication number Publication date
FR2423463B1 (en) 1980-10-10
LU76549A1 (en) 1978-09-13
NL7700251A (en) 1977-07-15
BR7700202A (en) 1977-10-18
IL51097A (en) 1980-02-29
SE7700256L (en) 1977-07-14
DE2700790A1 (en) 1977-07-14
DE2700790B2 (en) 1980-11-13
JPS5290494A (en) 1977-07-29
OA05734A (en) 1981-05-31
BE850090A (en) 1977-07-05
GB1574623A (en) 1980-09-10
MX144222A (en) 1981-09-10
IL51097A0 (en) 1977-02-28

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse