EP0019819A1 - Überzüge für Material aus keramischen Fasern, insbesondere für die Isolierung keramischer Öfen - Google Patents

Überzüge für Material aus keramischen Fasern, insbesondere für die Isolierung keramischer Öfen Download PDF

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Publication number
EP0019819A1
EP0019819A1 EP80102744A EP80102744A EP0019819A1 EP 0019819 A1 EP0019819 A1 EP 0019819A1 EP 80102744 A EP80102744 A EP 80102744A EP 80102744 A EP80102744 A EP 80102744A EP 0019819 A1 EP0019819 A1 EP 0019819A1
Authority
EP
European Patent Office
Prior art keywords
kiln
ceramic
cavities
wall
fact
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.)
Withdrawn
Application number
EP80102744A
Other languages
English (en)
French (fr)
Inventor
Carlo Melotti
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.)
Ing U Mori & C -Spa
Original Assignee
Ing U Mori & C -Spa
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 Ing U Mori & C -Spa filed Critical Ing U Mori & C -Spa
Publication of EP0019819A1 publication Critical patent/EP0019819A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements

Definitions

  • the invention concerns an improved coating in ceramic fi ber material, particularly for the insulation of ceramic kilns, that is to say, panels, blocks or structures in ge neral, which may be solid or hollow, made of ceramic fiber or metallic ceramic light insulating material or something similar, used especially but not exclusively to coat the walls of kilns for the baking of glazed ceramic tiles or, in any case, for the insulating coating of structures expos ed to fire and to the vapours generated by so-called flux materials like boron or lead (just to give a not limiting example) or by glazes in general,
  • the state of art comprises prefabricated panels and hollow blocks of ceramic fiber, which are placed one alongside the other and fixed among each other in order to form the insulating coating of the kiln walls, having initially very good insulating features, extremely high resistance to thermal shocks and the property of conferring a low thermal inertia to the walls; on the other hand, the vapours generated in the kiln, attack the surface of ceramic fiber material, penetrating it and modifying the characteristics of the following layers, which come off inflakes, leaving deeper and deeper intact surfaces naked, which are in their turn contaminated and detached up to the complete destruction of the special qualities of the ceramic fiber material and the cancellation of the tasks it has to perform,
  • a method was adopted, which foresees the impregnation and the coating of the surface of the ceramic fiber material with protective substances such as refractory cement, bonding agents for high temperatures, colloidal silica and others; on the other hand the insulating material thus treat e d has a surface
  • the invention solves the above said technical problem by adopting within the side of the panel, or of the hollow block, or of the insulating element in general, turned towards the kiln some cavities distributed in such a way as to form a grate to fix the layer impregnated by vapours generated during the working of the kiln, or to fix-the possible protect i ve film applied by prefabrication so that this layer or this film cannot detach:
  • such cavities can be made of hole or slit shape, preferably through holes or slits, or they can be shaped as grooves with a section that widens as it proceeds towards the inside of the insulating coating in order to form the retaining back draft of the vapour absorption layer or of the film, the width of such cavities is generally short, this in order to supply a certain number of fixing points, however, without jeopardizing the mechanical resistance of the insulat ing element because of the excessive weakening of its mass.
  • the insulating element is provided with the possibi lity of a stable self-protection of the inner layers by means of impregnation by the vapours during the working of the kiln or with a stabilization of the possible film obtained by means of preventive impregnation; the cost can be negligible, choosing cavity shapes like holes or slits, practically those most suitable to be realized during the forming process without requiring the intervention of machine tools; the fixing of the protection allows to maintain the integrity of the thickness of the insulating material with consequent long life.
  • the indications are as follows: 1 indicates the face of the insulating material element exposed to the vapours; 2 indicates the through holes of wall 3 of the element; 4 indicates dovetail grooves made in the wall 3; 5 indicates through slits of the wall 3; 6 is a film of the surface 1 of the insulating element, penetrating into the holes 2, into the gro oves 4, and into the slits 5 as well as along the inner sur face 7: the film 6 obtained either by means of a preliminary treatment or by the deposit of vapours during the working of the kiln diffuses because of impregnation also towards the inside of the thickness 3.
  • the fixing cavities in the insulating elements can be made du ring or after the forming as well as during the installation and finally also after the beginning of the operation of the kiln: in the latter two cases the fixing cavities economi cally most convenient are those consisting of holes 2; the stability of the surface 1 of the insulating element being assured by the continuity of the applied film and/or of the layer deposited by the vapours on the surface with the fixing surfaces of the holes 2, or the grooves 4 or the slits 5; continuity, which allows to consolidate the whole avoiding the detachment, the flaking off and the crumbling,
  • the protection itself with the forming of the relative film extends to the fixing cavities 2, 4, 5 even up to a point where the inner surface 7 is involved: the closing of the cavities 2, 4, 5 might hap pen during the process of preventive impregnation or subse quently during the working by accumulation caused by the vapours of the kiln.
  • the materials, the dimensions, the execution details, the shapes of the insulating elements, those of the holes, grooves and slits, their distribution and combination, their unions, the delivery angles, their distances, big compared to their dimensions, in a measure depending on the type of insulating material, may be different from those indicated but technically equivalent to them, without leaving the juridical dominion of this invention,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP80102744A 1979-05-30 1980-05-17 Überzüge für Material aus keramischen Fasern, insbesondere für die Isolierung keramischer Öfen Withdrawn EP0019819A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4006779 1979-05-30
IT40067/79A IT1124299B (it) 1979-05-30 1979-05-30 Rivestimento perfezionato in materiale fibroceramico particolarmente per la coibentazione dei forni ceramici

Publications (1)

Publication Number Publication Date
EP0019819A1 true EP0019819A1 (de) 1980-12-10

Family

ID=11247510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102744A Withdrawn EP0019819A1 (de) 1979-05-30 1980-05-17 Überzüge für Material aus keramischen Fasern, insbesondere für die Isolierung keramischer Öfen

Country Status (4)

Country Link
EP (1) EP0019819A1 (de)
AR (1) AR221541A1 (de)
ES (1) ES491973A0 (de)
IT (1) IT1124299B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541440A1 (fr) * 1983-02-18 1984-08-24 Glaverbel Procede de rechargement d'une structure refractaire
AT391107B (de) * 1982-06-30 1990-08-27 Didier Werke Ag Verbundbauteil, bestehend aus mindestens zwei teilen aus unterschiedlichen fasermaterialien
EP0419212A2 (de) * 1989-09-18 1991-03-27 Ngk Insulators, Ltd. Verfahren zur Oberflächenbehandlung der Innenwände eines Ofens, der mit keramischen Fasern bekleidet ist

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1850514U (de) * 1960-12-13 1962-04-26 Ilseder Huette Feuerfester stein zum ausmauern von oefen, insbesondere industrieoefen.
AU453030B2 (en) * 1971-08-09 1974-09-19 Volkmar Lindenthal Decorative sound absorbing covering
DE2542585A1 (de) * 1975-09-24 1977-04-07 Amf Mineralfaser Gmbh Verfahren und vorrichtung zur herstellung von mit einem muster oder ornament versehenen mineralfaserplatten
DE2646960A1 (de) * 1975-10-17 1977-04-28 Studiceram Monza Vorgefertigtes bauelement fuer brennoefen
GB1500720A (en) * 1975-11-20 1978-02-08 Fhd Furnaces Ltd Thermal insulation of furnaces
DE2831151A1 (de) * 1978-07-15 1980-01-31 Bulten Kanthal Gmbh Aus keramischen fasern bestehender formkoerper zur auskleidung eines ofens und ofen mit einer auskleidung mit derartigen formkoerpern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1850514U (de) * 1960-12-13 1962-04-26 Ilseder Huette Feuerfester stein zum ausmauern von oefen, insbesondere industrieoefen.
AU453030B2 (en) * 1971-08-09 1974-09-19 Volkmar Lindenthal Decorative sound absorbing covering
DE2542585A1 (de) * 1975-09-24 1977-04-07 Amf Mineralfaser Gmbh Verfahren und vorrichtung zur herstellung von mit einem muster oder ornament versehenen mineralfaserplatten
DE2646960A1 (de) * 1975-10-17 1977-04-28 Studiceram Monza Vorgefertigtes bauelement fuer brennoefen
GB1500720A (en) * 1975-11-20 1978-02-08 Fhd Furnaces Ltd Thermal insulation of furnaces
DE2831151A1 (de) * 1978-07-15 1980-01-31 Bulten Kanthal Gmbh Aus keramischen fasern bestehender formkoerper zur auskleidung eines ofens und ofen mit einer auskleidung mit derartigen formkoerpern

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391107B (de) * 1982-06-30 1990-08-27 Didier Werke Ag Verbundbauteil, bestehend aus mindestens zwei teilen aus unterschiedlichen fasermaterialien
FR2541440A1 (fr) * 1983-02-18 1984-08-24 Glaverbel Procede de rechargement d'une structure refractaire
EP0419212A2 (de) * 1989-09-18 1991-03-27 Ngk Insulators, Ltd. Verfahren zur Oberflächenbehandlung der Innenwände eines Ofens, der mit keramischen Fasern bekleidet ist
EP0419212A3 (en) * 1989-09-18 1991-07-10 Ngk Insulators, Ltd. Method for surface-treating the inner wall of a furnace, which is lined with ceramic fibers

Also Published As

Publication number Publication date
ES8103002A1 (es) 1981-02-16
ES491973A0 (es) 1981-02-16
AR221541A1 (es) 1981-02-13
IT1124299B (it) 1986-05-07
IT7940067A0 (it) 1979-05-30

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Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19810428

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840525

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MELOTTI, CARLO