ES475845A1 - Process for preparing gypsum - Google Patents
Process for preparing gypsumInfo
- Publication number
- ES475845A1 ES475845A1 ES475845A ES475845A ES475845A1 ES 475845 A1 ES475845 A1 ES 475845A1 ES 475845 A ES475845 A ES 475845A ES 475845 A ES475845 A ES 475845A ES 475845 A1 ES475845 A1 ES 475845A1
- Authority
- ES
- Spain
- Prior art keywords
- gypsum
- preparing gypsum
- ppm
- preparing
- natural
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A process for preparing a gypsum which is suitable for the preparation of anhydrite binders having improved properties, which process comprises treating a natural or synthetic gypsum in such a manner that the sodium content of the gypsum is less than 500 ppm and the fluorine content of the gypsum is greater than 2000 ppm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7737127A FR2413338A1 (en) | 1977-12-09 | 1977-12-09 | GYPSUM FOR PREPARATION OF ANHYDRITE BINDERS |
Publications (1)
Publication Number | Publication Date |
---|---|
ES475845A1 true ES475845A1 (en) | 1980-01-16 |
Family
ID=9198658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES475845A Expired ES475845A1 (en) | 1977-12-09 | 1978-12-07 | Process for preparing gypsum |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS5488926A (en) |
AT (1) | AT375904B (en) |
BE (1) | BE872519A (en) |
BR (1) | BR7808095A (en) |
ES (1) | ES475845A1 (en) |
FR (1) | FR2413338A1 (en) |
GB (1) | GB2009726B (en) |
IL (1) | IL55872A (en) |
IT (1) | IT1109065B (en) |
NL (1) | NL7812010A (en) |
OA (1) | OA06125A (en) |
PT (1) | PT68823A (en) |
SE (1) | SE436125B (en) |
ZA (1) | ZA786905B (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2246345C3 (en) * | 1972-09-21 | 1979-09-20 | Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen | Process for the production of practically non-blooming gypsum products |
FR2265701B1 (en) * | 1974-03-26 | 1980-11-14 | Charbonnages Ste Chimique | |
DE2427122B2 (en) * | 1974-06-05 | 1976-12-30 | Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen | PROCESS FOR STABILIZING THE ALPHA CALCIUM SULPHATE HALBYDRATE DURING THE MANUFACTURE OF WET PHOSPHORIC ACID |
-
1977
- 1977-12-09 FR FR7737127A patent/FR2413338A1/en active Granted
-
1978
- 1978-11-03 IL IL55872A patent/IL55872A/en unknown
- 1978-11-08 GB GB7843638A patent/GB2009726B/en not_active Expired
- 1978-11-23 PT PT68823A patent/PT68823A/en unknown
- 1978-12-01 IT IT69766/78A patent/IT1109065B/en active
- 1978-12-05 BE BE192131A patent/BE872519A/en not_active IP Right Cessation
- 1978-12-06 SE SE7812571A patent/SE436125B/en unknown
- 1978-12-07 AT AT0877078A patent/AT375904B/en not_active IP Right Cessation
- 1978-12-07 ES ES475845A patent/ES475845A1/en not_active Expired
- 1978-12-08 BR BR7808095A patent/BR7808095A/en unknown
- 1978-12-08 ZA ZA00786905A patent/ZA786905B/en unknown
- 1978-12-08 NL NL7812010A patent/NL7812010A/en not_active Application Discontinuation
- 1978-12-09 JP JP15149078A patent/JPS5488926A/en active Pending
- 1978-12-09 OA OA56677A patent/OA06125A/en unknown
Also Published As
Publication number | Publication date |
---|---|
IT1109065B (en) | 1985-12-16 |
BE872519A (en) | 1979-06-05 |
OA06125A (en) | 1981-06-30 |
GB2009726B (en) | 1982-10-27 |
NL7812010A (en) | 1979-06-12 |
JPS5488926A (en) | 1979-07-14 |
SE7812571L (en) | 1979-06-10 |
GB2009726A (en) | 1979-06-20 |
BR7808095A (en) | 1979-08-07 |
ZA786905B (en) | 1979-12-27 |
IT7869766A0 (en) | 1978-12-01 |
AT375904B (en) | 1984-09-25 |
SE436125B (en) | 1984-11-12 |
IL55872A0 (en) | 1979-01-31 |
IL55872A (en) | 1981-10-30 |
FR2413338A1 (en) | 1979-07-27 |
ATA877078A (en) | 1984-02-15 |
PT68823A (en) | 1978-12-01 |
FR2413338B1 (en) | 1982-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19980202 |