GB959871A - Improvements relating to processes for firing moulded objects in continuously operating furnaces - Google Patents
Improvements relating to processes for firing moulded objects in continuously operating furnacesInfo
- Publication number
- GB959871A GB959871A GB40664/62A GB4066462A GB959871A GB 959871 A GB959871 A GB 959871A GB 40664/62 A GB40664/62 A GB 40664/62A GB 4066462 A GB4066462 A GB 4066462A GB 959871 A GB959871 A GB 959871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- firing
- air
- moulded objects
- objects
- 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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Incineration Of Waste (AREA)
Abstract
Moulded objects containing combustible material are fired by a process in which the moulded objects are supplied at one end of the furnace and are discharged from the other end, the required firing temperature being attained by combustion of the combustible material in the moulded objects, wherein an oxygen-containing combustion agent, e.g. air with or without added steam or carbon dioxide, is supplied at a point between the ends of the furnace, after which part of the combustion agent is passed counter-currently and the remaining part cocurrently <PICT:0959871/C1/1> <PICT:0959871/C1/2> with the direction of the moulded objects, thus forming an ignition zone and a burning-out zone. The fired objects, e.g. porous ceramics, may be cooled in a counter-current of cold air. The Figures show preheating and ignition zone I, firing zone II, burning-out zone III and cooling zone IV. Fig. 1 shows charging lock 1, line 2 through which the combustion agent is admitted and ducts 3 and 4 through which the gases are withdrawn. Fig. 2 shows aerodynamic air-lock 5 through which the combustion air is admitted. Part of this air is blown to the firing zone II via fan 6, the rest is blown via injector 7 to the firing zone together with the gases from the ignition zone 7 and steam from line 8. Gases are withdrawn from the furnace via duct 3 and individually operated exhaust valves 41.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL270700 | 1961-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB959871A true GB959871A (en) | 1964-06-03 |
Family
ID=19753368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40664/62A Expired GB959871A (en) | 1961-10-27 | 1962-10-26 | Improvements relating to processes for firing moulded objects in continuously operating furnaces |
Country Status (3)
Country | Link |
---|---|
US (1) | US3242241A (en) |
GB (1) | GB959871A (en) |
NL (1) | NL270700A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2556826A1 (en) * | 1983-12-16 | 1985-06-21 | Halle Ziegelwerke | Utilising a tunnel kiln for firing ceramics |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1301436B (en) * | 1965-03-01 | 1969-08-21 | Andreas Haessler | Process for the operation of tunnel ovens u. Like. For firing ceramic products |
US4246215A (en) * | 1979-06-06 | 1981-01-20 | General Electric Company | Method for firing low density graphite/alumina compacts and cores |
IT1178520B (en) * | 1984-09-28 | 1987-09-09 | Alusuisse Italia Spa | PROCEDURE AND TUNNEL OVEN FOR THE CALCINATION OF CARBON BODIES, IN PARTICULAR OF ELECTRODES |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US635647A (en) * | 1897-07-02 | 1899-10-24 | Leo Otto Boeing | Kiln for burning fire-brick, &c. |
US673696A (en) * | 1899-08-28 | 1901-05-07 | Leo Otto Boeing | Annular chamber-oven. |
US721441A (en) * | 1902-03-31 | 1903-02-24 | William Hayhow | Adhesive brick. |
US1068762A (en) * | 1908-12-08 | 1913-07-29 | Max Gruenzweig | Manufacture of porous ceramic objects. |
US1620022A (en) * | 1924-05-12 | 1927-03-08 | Charles T Holcroft | Art of firing ceramic and other products |
US2567556A (en) * | 1949-06-02 | 1951-09-11 | Swindell Dressler Corp | Method and apparatus for regulating the operation of an open-fire tunnel kiln |
-
0
- NL NL270700D patent/NL270700A/xx unknown
-
1962
- 1962-10-26 GB GB40664/62A patent/GB959871A/en not_active Expired
- 1962-10-26 US US233287A patent/US3242241A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2556826A1 (en) * | 1983-12-16 | 1985-06-21 | Halle Ziegelwerke | Utilising a tunnel kiln for firing ceramics |
Also Published As
Publication number | Publication date |
---|---|
NL270700A (en) | |
US3242241A (en) | 1966-03-22 |
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