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 furnaces

Info

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
Application number
GB40664/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coumans-Schepers NV
Original Assignee
Coumans-Schepers NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Coumans-Schepers NV filed Critical Coumans-Schepers NV
Publication of GB959871A publication Critical patent/GB959871A/en
Expired legal-status Critical Current

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.
GB40664/62A 1961-10-27 1962-10-26 Improvements relating to processes for firing moulded objects in continuously operating furnaces Expired GB959871A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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