JPS5641828A - Manufacture of coarse gypsum - Google Patents

Manufacture of coarse gypsum

Info

Publication number
JPS5641828A
JPS5641828A JP11524779A JP11524779A JPS5641828A JP S5641828 A JPS5641828 A JP S5641828A JP 11524779 A JP11524779 A JP 11524779A JP 11524779 A JP11524779 A JP 11524779A JP S5641828 A JPS5641828 A JP S5641828A
Authority
JP
Japan
Prior art keywords
gypsum
manufacture
coarse gypsum
platelike
prismatic
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
JP11524779A
Other languages
Japanese (ja)
Inventor
Takeki Shinozaki
Minoru Ieda
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP11524779A priority Critical patent/JPS5641828A/en
Publication of JPS5641828A publication Critical patent/JPS5641828A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture platelike or prismatic thick coarse gypsum crystals in a short time by hydrating α-hemihydrate gypsum in the presence of gypsum and the absence of a surfactant.
CONSTITUTION: 100pts.wt. α-Hemihydrate gypsum is mixed with ≥20, preferably ≥50pts.wt. gypsum and hydrated at ≥30°C for 1W3hr in the absence of a surfactant to obtain platelike or prismatic thick coarse gypsum crystals of high grade.
COPYRIGHT: (C)1981,JPO&Japio
JP11524779A 1979-09-10 1979-09-10 Manufacture of coarse gypsum Pending JPS5641828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11524779A JPS5641828A (en) 1979-09-10 1979-09-10 Manufacture of coarse gypsum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11524779A JPS5641828A (en) 1979-09-10 1979-09-10 Manufacture of coarse gypsum

Publications (1)

Publication Number Publication Date
JPS5641828A true JPS5641828A (en) 1981-04-18

Family

ID=14657970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11524779A Pending JPS5641828A (en) 1979-09-10 1979-09-10 Manufacture of coarse gypsum

Country Status (1)

Country Link
JP (1) JPS5641828A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856594A (en) * 1971-11-20 1973-08-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856594A (en) * 1971-11-20 1973-08-08

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