JPS553360A - Ettringite synthesizing method - Google Patents
Ettringite synthesizing methodInfo
- Publication number
- JPS553360A JPS553360A JP7614478A JP7614478A JPS553360A JP S553360 A JPS553360 A JP S553360A JP 7614478 A JP7614478 A JP 7614478A JP 7614478 A JP7614478 A JP 7614478A JP S553360 A JPS553360 A JP S553360A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- ettringite
- naalo
- esp
- mols
- 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
- 229910001653 ettringite Inorganic materials 0.000 title abstract 3
- 230000002194 synthesizing effect Effects 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 6
- 239000010440 gypsum Substances 0.000 abstract 6
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 239000004566 building material Substances 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- 229910014813 CaC2 Inorganic materials 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
- C01F7/76—Double salts, i.e. compounds containing, besides aluminium and sulfate ions, only other cations, e.g. alums
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
PURPOSE: To produce high purity ettringite for building materials having self-flame- retarding effect by adding a specified amt. of lime raw material such as CaO and gypsum to a NaAlO2 soln. followed by reaction under restricted conditions.
CONSTITUTION: To a NaAlO2 soln. are added about 1.5 mols of lime raw material such as CaO, esp. CaC2 sludge and about 1.5 mols of gypsum to 1 mol of NaAlO2, and they are reacted at ordinary temp. W90°C for above 5 hr. The yielded ettringite is used in manufacture of building materials having self-extinguishing properties, esp. ceiling and a heat insulating board. The gypsum used is calcined gypsum, hemihydrate gypsum or gypsum, esp. gypsum formed in bulk as a byproduct of exhaust gas desulfurization.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53076144A JPS5820887B2 (en) | 1978-06-22 | 1978-06-22 | How to synthesize ettringite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53076144A JPS5820887B2 (en) | 1978-06-22 | 1978-06-22 | How to synthesize ettringite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS553360A true JPS553360A (en) | 1980-01-11 |
| JPS5820887B2 JPS5820887B2 (en) | 1983-04-26 |
Family
ID=13596794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53076144A Expired JPS5820887B2 (en) | 1978-06-22 | 1978-06-22 | How to synthesize ettringite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820887B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57205316A (en) * | 1981-06-10 | 1982-12-16 | Kubota Ltd | Synthesizing method for ettringite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50148295A (en) * | 1973-11-09 | 1975-11-27 |
-
1978
- 1978-06-22 JP JP53076144A patent/JPS5820887B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50148295A (en) * | 1973-11-09 | 1975-11-27 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57205316A (en) * | 1981-06-10 | 1982-12-16 | Kubota Ltd | Synthesizing method for ettringite |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5820887B2 (en) | 1983-04-26 |
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