JPS5692119A - Method and apparatus for drying alpha-type hemihydrate gypsum - Google Patents
Method and apparatus for drying alpha-type hemihydrate gypsumInfo
- Publication number
- JPS5692119A JPS5692119A JP16928079A JP16928079A JPS5692119A JP S5692119 A JPS5692119 A JP S5692119A JP 16928079 A JP16928079 A JP 16928079A JP 16928079 A JP16928079 A JP 16928079A JP S5692119 A JPS5692119 A JP S5692119A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- drying
- type hemihydrate
- hemihydrate gypsum
- dried
- 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 efficiently manufacture α-type hemihydrate gypsum of stable quality by drying α-type hemihydrate gypsum with a circulating primary drying gas and further drying it with a secondary drying gas of a temp. lower than that of the primary gas.
CONSTITUTION: Cakes of α-type hemihydrate gypsum are fed to drying pipe 3 through conveyor 1 and air lock valve 2, and dried with a primary dyring gas of 160W170°C and 0.35W0.4 humidity fed through heater 7 and blower 6. The dried cakes are then introduced into separator 4 and separated into the gas and gypsum. The gas is circulated to pipe 3 through return pipe 5. On the other hand, the gypsum is allowed to flow into mixer 8 attached to the bottom of separator 4, and in mixer 8 it is dried by mixing with a secondary drying gas of 70W90°C and 0.05W 0.1 humidity and the temp. of which is lower than that of the primary gas fed from gas feed pipe 9 through blower 11 and heater 12. The dried α-type hemihydrate gypsum is recovered through exhaust pipe 10 and bag filter 13.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16928079A JPS5692119A (en) | 1979-12-27 | 1979-12-27 | Method and apparatus for drying alpha-type hemihydrate gypsum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16928079A JPS5692119A (en) | 1979-12-27 | 1979-12-27 | Method and apparatus for drying alpha-type hemihydrate gypsum |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5692119A true JPS5692119A (en) | 1981-07-25 |
Family
ID=15883578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16928079A Pending JPS5692119A (en) | 1979-12-27 | 1979-12-27 | Method and apparatus for drying alpha-type hemihydrate gypsum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5692119A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018393A (en) * | 1973-06-21 | 1975-02-26 |
-
1979
- 1979-12-27 JP JP16928079A patent/JPS5692119A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018393A (en) * | 1973-06-21 | 1975-02-26 |
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