JPS5692115A - Manufacture of calcium sulfoaluminate - Google Patents
Manufacture of calcium sulfoaluminateInfo
- Publication number
- JPS5692115A JPS5692115A JP16769379A JP16769379A JPS5692115A JP S5692115 A JPS5692115 A JP S5692115A JP 16769379 A JP16769379 A JP 16769379A JP 16769379 A JP16769379 A JP 16769379A JP S5692115 A JPS5692115 A JP S5692115A
- Authority
- JP
- Japan
- Prior art keywords
- hydrate
- alumina hydrate
- sulfuric acid
- amorphous alumina
- contg
- 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
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To efficiently obtain calcium sulfoaluminate without generating SO2 gas by reacting specified amorphous alumina hydrate with a Ca compound such as calcium oxide and calcining the reaction product.
CONSTITUTION: Amorphous alumina hydrate contg. sulfuric acid radicals is mixed and reacted with one or more kinds or Ca compounds such as CaO, Ca(OH)2 and CaCO3, and the reaction product is calcined. At this time, the mixing ratio of the Ca compounds to the hydrate is preferably adjusted to 0.5W3, the sulfuric acid radical content of the hydrate to 5W40wt%, and the calcining temp. to 1,000W1,700°C. The starting materials may be mixed in the form of powder, aqueous suspension or aqueous paste. Amorphous alumina hydrate obtd. by treating waste water discharged from a process of surface treating aluminum in a sulfuric acid-contg. bath is advantageously used as the starting material alumina hydrate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16769379A JPS5692115A (en) | 1979-12-25 | 1979-12-25 | Manufacture of calcium sulfoaluminate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16769379A JPS5692115A (en) | 1979-12-25 | 1979-12-25 | Manufacture of calcium sulfoaluminate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5692115A true JPS5692115A (en) | 1981-07-25 |
JPS5761690B2 JPS5761690B2 (en) | 1982-12-25 |
Family
ID=15854472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16769379A Granted JPS5692115A (en) | 1979-12-25 | 1979-12-25 | Manufacture of calcium sulfoaluminate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5692115A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08177365A (en) * | 1994-12-26 | 1996-07-09 | Teruo Koi | Soil improvement work for construction and earth auger device therefor |
GB2592985A (en) * | 2019-06-12 | 2021-09-15 | Ardex Anlagen Gmbh | A method for the manufacture of hydraulic binders from water treatment residuals |
-
1979
- 1979-12-25 JP JP16769379A patent/JPS5692115A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08177365A (en) * | 1994-12-26 | 1996-07-09 | Teruo Koi | Soil improvement work for construction and earth auger device therefor |
GB2592985A (en) * | 2019-06-12 | 2021-09-15 | Ardex Anlagen Gmbh | A method for the manufacture of hydraulic binders from water treatment residuals |
Also Published As
Publication number | Publication date |
---|---|
JPS5761690B2 (en) | 1982-12-25 |
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