JPS5571628A - Ettringite synthesizing method - Google Patents

Ettringite synthesizing method

Info

Publication number
JPS5571628A
JPS5571628A JP14563578A JP14563578A JPS5571628A JP S5571628 A JPS5571628 A JP S5571628A JP 14563578 A JP14563578 A JP 14563578A JP 14563578 A JP14563578 A JP 14563578A JP S5571628 A JPS5571628 A JP S5571628A
Authority
JP
Japan
Prior art keywords
ettringite
suspension
filtered
gypsum
lime
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
Application number
JP14563578A
Other languages
Japanese (ja)
Inventor
Yoshiro Ibuki
Takashi Minemoto
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 JP14563578A priority Critical patent/JPS5571628A/en
Publication of JPS5571628A publication Critical patent/JPS5571628A/en
Pending legal-status Critical Current

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To synthesize high purity ettringite having superior heat-insulating and self-extinguishing properties, etc. by agitating a suspension of gypsum, lime and alumina sol at a specified temp. afrer which the suspension is allowed to stand, gently agitated, and filtered to obtain a filtered solid component, which is then dried.
CONSTITUTION: A suspension of gypsum (A), lime (B) and alumina sol (C) is agitated at 15W60°C, allowed to stand, gently agitated at the same temp., and filtered to obtain a filtered solid component, which is then dried to synthesize ettringite according to equation Al2O3+3CaSO4.2H2O+3Ca(OH)2→3CaO. Al2O3. 3CaSO4.32H2O. As shown by the equation gypsum dihydrate and slaked lime are typically used as (A) and (B), respectively. By adjusting the wt. ration of the raw materials to (A) 50W75%, (B) 15W40% and (C) 5W20% unreacted components can be reduced well, and formation of by-products such as CaCO3 and 3CaO. Al2O3.CaSO4.12W13H2O is minimized.
COPYRIGHT: (C)1980,JPO&Japio
JP14563578A 1978-11-24 1978-11-24 Ettringite synthesizing method Pending JPS5571628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14563578A JPS5571628A (en) 1978-11-24 1978-11-24 Ettringite synthesizing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14563578A JPS5571628A (en) 1978-11-24 1978-11-24 Ettringite synthesizing method

Publications (1)

Publication Number Publication Date
JPS5571628A true JPS5571628A (en) 1980-05-29

Family

ID=15389560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14563578A Pending JPS5571628A (en) 1978-11-24 1978-11-24 Ettringite synthesizing method

Country Status (1)

Country Link
JP (1) JPS5571628A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4969592A (en) * 1972-10-31 1974-07-05
JPS5022795A (en) * 1973-07-03 1975-03-11
JPS5160806A (en) * 1974-09-30 1976-05-27 Gen Electric

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4969592A (en) * 1972-10-31 1974-07-05
JPS5022795A (en) * 1973-07-03 1975-03-11
JPS5160806A (en) * 1974-09-30 1976-05-27 Gen Electric

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