GB1457607A - Method of and apparatus for the firing of gypsum - Google Patents
Method of and apparatus for the firing of gypsumInfo
- Publication number
- GB1457607A GB1457607A GB3909674A GB3909674A GB1457607A GB 1457607 A GB1457607 A GB 1457607A GB 3909674 A GB3909674 A GB 3909674A GB 3909674 A GB3909674 A GB 3909674A GB 1457607 A GB1457607 A GB 1457607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- gypsum
- kiln
- zones
- tubes
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/08—Rotary-drum furnaces, i.e. horizontal or slightly inclined externally heated
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
1457607 Firing gypsum LAMBERT INDUSTRIES 6 Sept 1974 [8 March 1974] 39096/74 Heading C1A [Also in Division F4] Gypsum is heat treated to produce plaster of Paris in at least three zones through which the material is moved, and the material is stirred in its passage through the zones. The material can be recycled from one zone to a preceding zone, to enable the heating to be controlled. Gypsum is fed at 11 to a rotary kiln heated by gases from a burner 16 flowing through tubes 10 parallel to the kiln axes and arranged to be submerged in the charge during part of the rotation of the kiln. Annular partitions 5-8 through which the tubes 10 pass, divide the kiln into zones, and blades in the central orifice of each partition assist in feeding the material from zone to zone. Duct 17, Fig. 4, leading to spiral conduits 13, enable a regulatable amount of the material to be recycled to the preceding zone. Heating gases may be recirculated to the burner 16, and the flow through the tubes 10 may be regulated to control the heating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7408075A FR2263205B1 (en) | 1974-03-08 | 1974-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1457607A true GB1457607A (en) | 1976-12-08 |
Family
ID=9136073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3909674A Expired GB1457607A (en) | 1974-03-08 | 1974-09-06 | Method of and apparatus for the firing of gypsum |
Country Status (3)
| Country | Link |
|---|---|
| ES (1) | ES436518A1 (en) |
| FR (1) | FR2263205B1 (en) |
| GB (1) | GB1457607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340515C (en) * | 2006-03-13 | 2007-10-03 | 山东天力干燥设备有限公司 | Gypsum flue gas rotary calcining/cooling kiln |
| CN114893960A (en) * | 2022-04-27 | 2022-08-12 | 河南郑矿机器有限公司 | Gypsum calcining rotary kiln production line system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721916B2 (en) * | 1977-05-14 | 1979-08-30 | Babcock-Bsh Ag Vormals Buettner- Schilde-Haas Ag, 4150 Krefeld | Process for firing plaster and building plaster in a rotary kiln and rotary kiln for carrying out the process |
-
1974
- 1974-03-08 FR FR7408075A patent/FR2263205B1/fr not_active Expired
- 1974-09-06 GB GB3909674A patent/GB1457607A/en not_active Expired
- 1974-10-05 ES ES436518A patent/ES436518A1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340515C (en) * | 2006-03-13 | 2007-10-03 | 山东天力干燥设备有限公司 | Gypsum flue gas rotary calcining/cooling kiln |
| CN114893960A (en) * | 2022-04-27 | 2022-08-12 | 河南郑矿机器有限公司 | Gypsum calcining rotary kiln production line system |
Also Published As
| Publication number | Publication date |
|---|---|
| ES436518A1 (en) | 1977-01-01 |
| FR2263205A1 (en) | 1975-10-03 |
| FR2263205B1 (en) | 1980-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |