JPS57205316A - Synthesizing method for ettringite - Google Patents
Synthesizing method for ettringiteInfo
- Publication number
- JPS57205316A JPS57205316A JP8994981A JP8994981A JPS57205316A JP S57205316 A JPS57205316 A JP S57205316A JP 8994981 A JP8994981 A JP 8994981A JP 8994981 A JP8994981 A JP 8994981A JP S57205316 A JPS57205316 A JP S57205316A
- Authority
- JP
- Japan
- Prior art keywords
- ettringite
- concn
- starting material
- amount
- aqueous soln
- 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.)
- Pending
Links
Abstract
PURPOSE: To synthesize ettringite in a short time by dissolving sodium aluminate, a starting material for lime and a starting material for gypsum in water to prepare an aqueous soln. having a specified concn. on the basis of the amount of formed ettringite and agitating the soln. with heating for a specified time.
CONSTITUTION: Sodium aluminate, a starting material for lime and a starting material for gypsum are dissolved in water to prepare an aqueous soln. having about 0.01W0.1mol/l concn. on the basis of the amount of formed ettringite. When the amount of formed ettringite is Xmol and the amount of the aqueous soln. is Yl, the concn. is adjusted to X/Ymol/l. In case where the concn. is not within the range, ettringite forming reaction proceeds hardly. By agitating the aqueous soln. with heating for 20min W 2hr, ettringite is formed rapidly. By continuing the agitation for ≥2hr, formed ettringite crystals are broken.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8994981A JPS57205316A (en) | 1981-06-10 | 1981-06-10 | Synthesizing method for ettringite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8994981A JPS57205316A (en) | 1981-06-10 | 1981-06-10 | Synthesizing method for ettringite |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57205316A true JPS57205316A (en) | 1982-12-16 |
Family
ID=13984949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8994981A Pending JPS57205316A (en) | 1981-06-10 | 1981-06-10 | Synthesizing method for ettringite |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57205316A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997035807A1 (en) * | 1996-03-22 | 1997-10-02 | Rethmann Lippewerk Recycling Gmbh | Process for preparing a precipitate based on calcium aluminate sulphate (casul) and its use |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS553360A (en) * | 1978-06-22 | 1980-01-11 | Kubota Ltd | Ettringite synthesizing method |
-
1981
- 1981-06-10 JP JP8994981A patent/JPS57205316A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS553360A (en) * | 1978-06-22 | 1980-01-11 | Kubota Ltd | Ettringite synthesizing method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997035807A1 (en) * | 1996-03-22 | 1997-10-02 | Rethmann Lippewerk Recycling Gmbh | Process for preparing a precipitate based on calcium aluminate sulphate (casul) and its use |
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