FR2423463A1 - ANHYDRITE FOR BINDER - Google Patents
ANHYDRITE FOR BINDERInfo
- 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
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.
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)
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)
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 |
-
1976
- 1976-01-13 FR FR7600678A patent/FR2423463A1/en active Granted
- 1976-12-13 IL IL51097A patent/IL51097A/en unknown
-
1977
- 1977-01-03 MX MX167518A patent/MX144222A/en unknown
- 1977-01-05 BE BE1007859A patent/BE850090A/en not_active IP Right Cessation
- 1977-01-11 LU LU76549A patent/LU76549A1/xx unknown
- 1977-01-11 DE DE2700790A patent/DE2700790B2/en not_active Withdrawn
- 1977-01-12 NL NL7700251A patent/NL7700251A/en not_active Application Discontinuation
- 1977-01-12 SE SE7700256A patent/SE7700256L/en not_active Application Discontinuation
- 1977-01-12 BR BR7700202A patent/BR7700202A/en unknown
- 1977-01-13 GB GB1349/77A patent/GB1574623A/en not_active Expired
- 1977-01-13 JP JP197977A patent/JPS5290494A/en active Pending
- 1977-08-06 OA OA56249A patent/OA05734A/en unknown
Cited By (1)
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 |