NO900168L - PROCEDURE FOR PREPARING CALCIUM SULPHATE HALF HYDRATE - Google Patents
PROCEDURE FOR PREPARING CALCIUM SULPHATE HALF HYDRATEInfo
- Publication number
- NO900168L NO900168L NO90900168A NO900168A NO900168L NO 900168 L NO900168 L NO 900168L NO 90900168 A NO90900168 A NO 90900168A NO 900168 A NO900168 A NO 900168A NO 900168 L NO900168 L NO 900168L
- Authority
- NO
- Norway
- Prior art keywords
- procedure
- strength
- calcium sulphate
- half hydrate
- preparing calcium
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Fremgangsmåte for fremstilling av kalsiumsulfat-alfahalv- hydrat hovedsakelig i form av primære krystaller, hvor produktet reduseres til en finhet tilsvarende den fasthets- utvikling som er nødvendig for det forutsette anvendelses- område og finkornene fjernes ved sikting og det tilsettes minst en fruktsyre og/eller salt derav som forsinkende middel og fluiditetsmiddel, for å erholde et produkt med tilstrek- kelig forsinket stcrkningsbegynnelse, hurtigere fasthets- utvikling og hoyere fasthetsnivå og som er særlig egnet som sprcytemortel.Process for the preparation of calcium sulfate alpha half hydrate mainly in the form of primary crystals, wherein the product is reduced to a fineness corresponding to the strength development necessary for the intended application and the fine grains are removed by sieving and at least one fruit acid and / or added salt thereof as a retarding agent and fluidity agent, to obtain a product of sufficiently delayed initiation of strength, faster strength development and higher strength level, and which is particularly suitable as a spray mortar.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3816513A DE3816513C3 (en) | 1987-05-22 | 1988-05-14 | Process for producing calcium sulfate alpha hemihydrate from finely divided calcium sulfate and its use |
EP88120944A EP0342272B1 (en) | 1987-05-22 | 1988-12-15 | Process for the treatment of alpha-calciumsulphate-hemihydrate |
PCT/EP1989/000512 WO1989010905A1 (en) | 1987-05-22 | 1989-05-10 | Process for preparing calcium sulphate alpha hemihydrate |
Publications (2)
Publication Number | Publication Date |
---|---|
NO900168D0 NO900168D0 (en) | 1990-01-12 |
NO900168L true NO900168L (en) | 1990-03-13 |
Family
ID=27197624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO90900168A NO900168L (en) | 1988-05-14 | 1990-01-12 | PROCEDURE FOR PREPARING CALCIUM SULPHATE HALF HYDRATE |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO900168L (en) |
-
1990
- 1990-01-12 NO NO90900168A patent/NO900168L/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO900168D0 (en) | 1990-01-12 |
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