JPS5641828A - Manufacture of coarse gypsum - Google Patents
Manufacture of coarse gypsumInfo
- 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
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4856594A (en) * | 1971-11-20 | 1973-08-08 |
-
1979
- 1979-09-10 JP JP11524779A patent/JPS5641828A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4856594A (en) * | 1971-11-20 | 1973-08-08 |
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