JPS553360A - Ettringite synthesizing method - Google Patents

Ettringite synthesizing method

Info

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
Application number
JP7614478A
Other languages
Japanese (ja)
Other versions
JPS5820887B2 (en
Inventor
Hideo Tamura
Yoshiro Ibuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP53076144A priority Critical patent/JPS5820887B2/en
Publication of JPS553360A publication Critical patent/JPS553360A/en
Publication of JPS5820887B2 publication Critical patent/JPS5820887B2/en
Expired legal-status Critical Current

Links

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

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
JP53076144A 1978-06-22 1978-06-22 How to synthesize ettringite Expired JPS5820887B2 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57205316A (en) * 1981-06-10 1982-12-16 Kubota Ltd Synthesizing method for ettringite

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50148295A (en) * 1973-11-09 1975-11-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50148295A (en) * 1973-11-09 1975-11-27

Cited By (1)

* Cited by examiner, † Cited by third party
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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