FI930550A - Method for producing gypsum flakes from flue gas desulphurisation - Google Patents
Method for producing gypsum flakes from flue gas desulphurisation Download PDFInfo
- Publication number
- FI930550A FI930550A FI930550A FI930550A FI930550A FI 930550 A FI930550 A FI 930550A FI 930550 A FI930550 A FI 930550A FI 930550 A FI930550 A FI 930550A FI 930550 A FI930550 A FI 930550A
- Authority
- FI
- Finland
- Prior art keywords
- calcium sulphate
- sulphate dihydrate
- compression
- flakes
- gypsum calcium
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
This invention relates to an improved process for producing gypsum calcium sulphate dihydrate flakes from pulverulent gypsum calcium sulphate dihydrate which has been obtained when desulphurating flue gas by means of the wet limestone process. The size and strength of the flakes is sufficient to enable the gypsum calcium sulphate dihydrate to be handled and processed in the customary apparatus which is used generally by manufacturers of wood fibre boards and other within the building industry. The calcium sulphate dihydrate intermediate from the desulphuration process is concentrated to approx. 5-12% by weight and then compressed into a thin sheet under a compression load of 1.6-5.9 tons/cm per sheet width (4-15 tons per linear inch). A linear speed of 0.15-0.76 metre (0.5-2.5 feet) per second is maintained during the compression, with the dwell time during the compression being approx 0.2-1.2 seconds. An elevated temperature is maintained during the compression process for the purpose of increasing the remodelling of the crystalline size and shape of the gypsum calcium sulphate dihydrate. The combination of pressure and temperature on the moist gypsum calcium sulphate dihydrate changes the physical properties of the gypsum calcium sulphate dihydrate, resulting in a sheet which, on leaving the compression zone, is broken up into hard flakes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI930550A FI105806B (en) | 1993-02-09 | 1993-02-09 | Process for producing gypsum flakes from flue gas desulphuration |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI930550 | 1993-02-09 | ||
FI930550A FI105806B (en) | 1993-02-09 | 1993-02-09 | Process for producing gypsum flakes from flue gas desulphuration |
Publications (3)
Publication Number | Publication Date |
---|---|
FI930550A0 FI930550A0 (en) | 1993-02-09 |
FI930550A true FI930550A (en) | 1994-08-10 |
FI105806B FI105806B (en) | 2000-10-13 |
Family
ID=8537258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI930550A FI105806B (en) | 1993-02-09 | 1993-02-09 | Process for producing gypsum flakes from flue gas desulphuration |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI105806B (en) |
-
1993
- 1993-02-09 FI FI930550A patent/FI105806B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI105806B (en) | 2000-10-13 |
FI930550A0 (en) | 1993-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
PL1815066T3 (en) | A method and a machine for making fibre products from stock | |
FI932276A (en) | Calcium and / or magnesium hydroxide, for the production and sale of magnesium | |
AR004900A1 (en) | A METHOD FOR THE PRODUCTION OF CEMENTS BASED ON CALCIUM SULFOALUMINATE, AND CEMENT PRODUCED WITH SUCH METHOD | |
DE69016210D1 (en) | METHOD AND DEVICE FOR DENSIFYING A WOOD PATTERN. | |
PT100701A (en) | PROCESS FOR THE PRODUCTION OF FOODSTUFFS OF PRE-COOKED CEREALS | |
ATE130585T1 (en) | METHOD FOR PRODUCING GYPSUM FLAKES FROM FLUE GAS DESULFURIZATION. | |
FI930550A (en) | Method for producing gypsum flakes from flue gas desulphurisation | |
JPS5645854A (en) | Hydraulic cement | |
FI821582L (en) | FRAMEWORK FOR FRAMING PROCESSING | |
FI69269B (en) | FORMALDEHYDFRI SPAONSKIVA | |
PT1277527E (en) | Method of converting asbestos-cement products into cement products | |
WO2009063442A3 (en) | A process for producing a fibre plant/lime product | |
DK0951987T3 (en) | Method and apparatus for the manufacture of plate and profiles and plates and profiles made using this method | |
NO810576L (en) | BYGNINSPLATE. | |
AR031310A1 (en) | HYDRATION PROCESS OF PLASTER PLATES, DEVICE FOR PUTTING INTO PRACTICE | |
DE50213826D1 (en) | Insulating board with compressible edge zones and process for their preparation | |
ES440142A1 (en) | Process for preparing shaped articles from gypsum | |
SU1623861A1 (en) | Method of obtaining chips | |
DE60107568D1 (en) | Process for producing a mineral wool product and mineral wool product | |
ES2075354T3 (en) | PRODUCTS OVERBASIFIED WITH A SULPHITE AND PROCEDURE FOR THEIR OBTAINING. | |
SU621649A1 (en) | Raw mix for obtaining portland cement clinker | |
RU1773891C (en) | Method of manufacturing gypsum fibrous plates | |
SU1604329A1 (en) | Method of obtaining vegetable-protein feed from rough raw materials | |
BG105895A (en) | Method for the production of hydraulic bonding agent based on anhydrite iii or alpha anhydrite and the produced hydraulic bonding agent | |
Simpson | Press-drying plantation loblolly pine lumber to reduce warp losses: economic sensitivity analysis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MA | Patent expired |