JPS5499098A - Production of satin spar gypsum or spherical gypsum formed from said gypsum - Google Patents

Production of satin spar gypsum or spherical gypsum formed from said gypsum

Info

Publication number
JPS5499098A
JPS5499098A JP15945577A JP15945577A JPS5499098A JP S5499098 A JPS5499098 A JP S5499098A JP 15945577 A JP15945577 A JP 15945577A JP 15945577 A JP15945577 A JP 15945577A JP S5499098 A JPS5499098 A JP S5499098A
Authority
JP
Japan
Prior art keywords
gypsum
hemihydrate
spherical
spar
production
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
JP15945577A
Other languages
Japanese (ja)
Other versions
JPS6227007B2 (en
Inventor
Masahiko Shiraishi
Shiro Kozakura
Chikao Shiho
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
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 Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Priority to JP15945577A priority Critical patent/JPS5499098A/en
Priority to GB8015586A priority patent/GB2053874B/en
Priority to GB7848753A priority patent/GB2011363B/en
Priority to CA318,237A priority patent/CA1115025A/en
Priority to DE2854722A priority patent/DE2854722C2/en
Priority to FR7836549A priority patent/FR2413339B1/en
Priority to IT52460/78A priority patent/IT1158192B/en
Publication of JPS5499098A publication Critical patent/JPS5499098A/en
Publication of JPS6227007B2 publication Critical patent/JPS6227007B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To produce satin spar gypsum and spherical gypsum in a short time by adding hemihydrate gypsum or sol. anhydrous gypsum to a hydrothermal reaction system of an aq. slurry of raw gypsum at above a temp. at which hemihydrate gypsum terminates hydration.
CONSTITUTION: Water, an acidic aq. slon. or an org. solvent-contg. aq. slon. is added to gypsum and/or hemihydrate gypsum, and hydrothermal reaction is carried out with stirring and heating at 100W170, esp. 110W140°C. During this process, hemihydrate gypsum or sol. anhydrous gypsum is added to the reaction system in an amt. of 0.2W50, pref. 1W20 wt% to the amt. of the raw gypsum at above a temp. at which hemihydrate gypsum terminates hydration. The reaction product is optionally subjected to solid-liquid separation and then dried at about 60°C to obtain α-type hemihydrate satin spar gypsum, spherical gypsum formed from said gypsuym, or their intermediate aggregate. The resulting gypsum is small in diameter and very long.
COPYRIGHT: (C)1979,JPO&Japio
JP15945577A 1977-12-29 1977-12-29 Production of satin spar gypsum or spherical gypsum formed from said gypsum Granted JPS5499098A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP15945577A JPS5499098A (en) 1977-12-29 1977-12-29 Production of satin spar gypsum or spherical gypsum formed from said gypsum
GB8015586A GB2053874B (en) 1977-12-29 1978-12-15 Production of calcium sulphate
GB7848753A GB2011363B (en) 1977-12-29 1978-12-15 Production of calcium sulphate
CA318,237A CA1115025A (en) 1977-12-29 1978-12-19 Process for producing calcium sulfate
DE2854722A DE2854722C2 (en) 1977-12-29 1978-12-19 Process for the production of fibrous and / or spherical α-calcium sulfate hemihydrate
FR7836549A FR2413339B1 (en) 1977-12-29 1978-12-27 PROCESS FOR THE PREPARATION OF CALCIUM SULFATE
IT52460/78A IT1158192B (en) 1977-12-29 1978-12-27 PROCEDURE FOR PRODUCING CALCIUM SULPHATE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15945577A JPS5499098A (en) 1977-12-29 1977-12-29 Production of satin spar gypsum or spherical gypsum formed from said gypsum

Publications (2)

Publication Number Publication Date
JPS5499098A true JPS5499098A (en) 1979-08-04
JPS6227007B2 JPS6227007B2 (en) 1987-06-11

Family

ID=15694128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15945577A Granted JPS5499098A (en) 1977-12-29 1977-12-29 Production of satin spar gypsum or spherical gypsum formed from said gypsum

Country Status (1)

Country Link
JP (1) JPS5499098A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013533195A (en) * 2010-09-15 2013-08-22 ベイジン ニュー ビルディング マテリアルズ パブリック リミティド カンパニー Gypsum whisker, reinforced mineral wool sound absorbing plate including the gypsum whisker, and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013533195A (en) * 2010-09-15 2013-08-22 ベイジン ニュー ビルディング マテリアルズ パブリック リミティド カンパニー Gypsum whisker, reinforced mineral wool sound absorbing plate including the gypsum whisker, and method for manufacturing the same

Also Published As

Publication number Publication date
JPS6227007B2 (en) 1987-06-11

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