FI102891B1 - Process for treating plaster - Google Patents
Process for treating plasterInfo
- Publication number
- FI102891B1 FI102891B1 FI973289A FI973289A FI102891B1 FI 102891 B1 FI102891 B1 FI 102891B1 FI 973289 A FI973289 A FI 973289A FI 973289 A FI973289 A FI 973289A FI 102891 B1 FI102891 B1 FI 102891B1
- Authority
- FI
- Finland
- Prior art keywords
- plaster
- orthosilicic acid
- water
- binding agent
- treating
- Prior art date
Links
Landscapes
- Medicinal Preparation (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a process for treating plaster, in which process crystal water-containing plaster is transformed into a binding agent by means of dehydration. According to the invention, water is first of all removed at low temperature. To implement this, the pulverulent plaster is mixed with orthosilicic acid, mSiO2 x nH2O, with the orthosilicic acid being allowed to suck water up out of the plaster in the resulting mixture, after which the orthosilicic acid is separated off from the plaster and the treated plaster is dried by means of heat treatment. The binding agent which is obtained contains a large proportion of the α modification of the hemihydrate. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI973289A FI102891B1 (en) | 1997-08-11 | 1997-08-11 | Process for treating plaster |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI973289 | 1997-08-11 | ||
FI973289A FI102891B1 (en) | 1997-08-11 | 1997-08-11 | Process for treating plaster |
Publications (3)
Publication Number | Publication Date |
---|---|
FI973289A0 FI973289A0 (en) | 1997-08-11 |
FI102891B FI102891B (en) | 1999-03-15 |
FI102891B1 true FI102891B1 (en) | 1999-03-15 |
Family
ID=8549333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI973289A FI102891B1 (en) | 1997-08-11 | 1997-08-11 | Process for treating plaster |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI102891B1 (en) |
-
1997
- 1997-08-11 FI FI973289A patent/FI102891B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
FI102891B (en) | 1999-03-15 |
FI973289A0 (en) | 1997-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NZ513585A (en) | Calcined gypsum hydration enhancing additives | |
PL334382A1 (en) | Treatment of sludges or the like | |
ATE156466T1 (en) | METHOD AND MIXTURE FOR TREATING ELECTRIC ARC FURNACE DUST | |
JPS571482A (en) | Caking method for cyanide-contng. solid waste | |
FI102891B1 (en) | Process for treating plaster | |
BG104044A (en) | Method for aresnic-containing sludge | |
DE69904342D1 (en) | METHOD AND SYSTEM FOR TREATING AQUEOUS SUBSTANCES WITH ZEOLITES | |
JPS5644100A (en) | Dehydration/caking treating method of sludge | |
ATE304414T1 (en) | METHOD AND REACTOR FOR TREATING ANIMAL MEAL AND/OR FATS | |
JPS5610398A (en) | High speed dehydrating agent and treating method for excretion waste which use said agent | |
JPS5615885A (en) | Water treating method | |
JPS5787900A (en) | Treatment of purification plant sludge | |
JPS55114400A (en) | Dehydration and drying of sludge | |
SU713840A1 (en) | Binder | |
JPS5444269A (en) | Drying method of the sludge | |
JPS5615886A (en) | Water treating method | |
RU1792924C (en) | Way of neutralization and deferrization of sour ferriferous waters | |
JPH10202286A (en) | Sewer treatment | |
RU94025784A (en) | Process for utilization of activated sludge | |
JPS57187092A (en) | Treatment of waste water containing phosphoric acid | |
JPS567681A (en) | Treatment of water | |
JPS5787897A (en) | Treatment of purification plant sludge | |
JPS5551488A (en) | Removing acidic phosphate ester in water phase | |
ATE104259T1 (en) | PROCESS FOR THE MANUFACTURE OF SAND-LIME MORTAR, SAND-LIME BRICK MADE THEREOF AND DEVICE FOR MANUFACTURING THE SAND-LIME MORTAR. | |
JPS57205316A (en) | Synthesizing method for ettringite |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Patent granted |
Owner name: VÄNNINEN, SVETLANA PAVLOVNA |