EP0689021A1 - Feuerfeste Decke und Stein dafür - Google Patents

Feuerfeste Decke und Stein dafür Download PDF

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Publication number
EP0689021A1
EP0689021A1 EP95850113A EP95850113A EP0689021A1 EP 0689021 A1 EP0689021 A1 EP 0689021A1 EP 95850113 A EP95850113 A EP 95850113A EP 95850113 A EP95850113 A EP 95850113A EP 0689021 A1 EP0689021 A1 EP 0689021A1
Authority
EP
European Patent Office
Prior art keywords
bricks
roof
brick
refractory
directly supported
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Withdrawn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
EP95850113A
Other languages
English (en)
French (fr)
Inventor
Yvonne Nilsson
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.)
Hoganas Bjuf AB
Original Assignee
Hoganas Bjuf AB
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 Hoganas Bjuf AB filed Critical Hoganas Bjuf AB
Publication of EP0689021A1 publication Critical patent/EP0689021A1/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Withdrawn legal-status Critical Current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
    • F27D1/02—Crowns; Roofs
    • F27D1/021—Suspended roofs
    • 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
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used

Definitions

  • the present invention relates to a refractory roof for a space which is intended to be subjected to very high temperatures, for example high-temperature furnaces.
  • the invention also relates to a special refractory brick for building the refractory roof.
  • the present invention relates to a refractory roof, which comprises refractory bricks arranged in parallel rows and having side surfaces substantially connecting with each other, and a superjacent supporting structure for directly supporting some of the bricks, which in turn support the remaining bricks.
  • each brick in every row or every second row has a groove in two opposite side surfaces or in one side surface for receiving one lateral flange of an I-beam, which is included in the superjacent supporting structure.
  • the grooved side surfaces are substantially parallel to the web of the I-beam, which, when deflecting the roof perpendicularly to the longitudinal direction of the I-beams, results in the forming of gaps from the space under the roof up to the lower flanges of the I-beams.
  • the lower side of these flanges is protected by insulating material, the strain on the lower flanges of the I-beams will have a detrimental effect on the life of the refractory roof.
  • Refractory roofs are also known, in which the bricks included are interconnected by tongue-and-groove joints on all side surfaces. Also in this case, undesirable gaps may arise, reducing the life of the roof and, besides, the brick shape is very complicated, which results in difficulties in obtaining sufficient dimensional accuracy in the manufacture thereof.
  • the main object of the present invention therefore is to provide a refractory roof which has a longer life by eliminating the risk of gaps arising between the bricks, at the same time as the bricks are not of a too complicated shape and do not require great dimensional accuracy to fulfil their function.
  • a further object of the invention is to provide a refractory roof by means of refractory bricks in a small number of different shapes, said roof being possible to build optionally from the side, from above or from below.
  • each brick is quadrilateral in planes which are essentially parallel with the roof, that each of the four sides of every brick, which faces another brick in the roof, has two essentially parallel surfaces which are inclined to a plane extending essentially in parallel with the roof, and are joined by a surface which is essentially parallel with the roof, that each of the bricks directly supported by the supporting structure has at least two opposite sides having surfaces which are inclined downwards and away from each other, and that each of the remaining bricks has at least two opposite sides having surfaces inclined upwards and away from each other.
  • each brick directly supported by the supporting structure can have a lower portion in the form of a first truncated pyramid and an intermediate portion connecting with the lower portion and being in the form of a second truncated pyramid which has a smaller base area than the top area of the first truncated pyramid.
  • the first truncated pyramid preferably is substantially centred relative to the second truncated pyramid.
  • each brick directly supported by the superjacent supporting structure suitably comprises an upper portion connecting with the intermediate portion and having means which permit the superjacent supporting structure to support the brick.
  • These means may comprise, for instance, two lugs projecting in opposite directions from the upper portion in the plane of the roof, the superjacent supporting structure being able to engage with the lower sides of said lugs.
  • the bricks directly supported by the superjacent supporting structure constitute a first type of brick included in the refractory roof.
  • a second type of brick included in the refractory roof may consist of the bricks between two neighbouring rows of directly supported bricks, the intermediate bricks each having essentially parallel surfaces on their two opposite sides extending transversely of the rows.
  • a third and last type of brick included in the refractory roof consists of every brick between two neighbouring, directly supported bricks in one row.
  • This type of brick is designed to completely fill the space between surfaces of the lower portions and intermediate portions of these two directly supported bricks, said surfaces facing each other, and has the same cross-sectional shape as these directly supported bricks transversely of the longitudinal direction of the row.
  • Fig. 1 is a cross-sectional view of a refractory roof according to prior-art technique.
  • Fig. 2 is a perspective view seen obliquely from above of an embodiment of a refractory roof according to the present invention, without the associated supporting structure.
  • Figs 3 and 4 are cross-sectional views along lines III-III and IV-IV in Fig. 2.
  • Fig. 5 is a perspective view of a first type of brick included in the refractory roof according to Figs 2-4.
  • Figs 6-8 are a perspective view, a front view and a side view of a second type of brick included in the refractory roof according to Figs 2-4.
  • Figs 9-11 are a perspective view, a front view and a side view of a third type of brick included in the refractory roof according to Figs 2-4.
  • Fig. 12 illustrates an alternative supporting structure according to the invention.
  • each brick 1 has grooves in opposite sides for receiving the lower flange of two neighbouring I-beams 2.
  • the grooves are filled with insulating material 3. Insulating material is usually also arranged on the upper side of the bricks 1 to protect the uppermost parts of the supporting structure, including an additional roof, if any.
  • the embodiment of a refractory roof according to the invention as illustrated in Fig. 2 uses three types A, B and C of refractory bricks. These refractory bricks A-C are arranged in parallel rows, of which only three rows 4, 5 and 6 are shown.
  • the bricks A constitute every second brick in every second row, for instances the rows 4 and 6.
  • the bricks B are arranged in the same rows as the bricks A and each between two neighbouring bricks A.
  • the bricks C form the remaining rows of bricks positioned between the rows of the bricks A.
  • the bricks A-C are arranged in parallel rows also transversely of the rows 4-6.
  • each of the four sides of every brick A-C which faces another brick in the roof, has two essentially parallel surfaces A11, A12; A21, A22; A31, A32; A41, A42; B11, B12; ...; B41, B42; C11, C12; ...; C41, C42 which are inclined to a plane essentially parallel with the roof and which are joined by a surface A13; A23; A33; A43; B13; ...; B43; C13; ...; C43, which is essentially parallel with the roof, i.e. a plane essentially parallel with the roof.
  • the opposite sides of the bricks A have surfaces A11, A31; A12, A32; A21, A41; A22, A42 which are downwardly inclined away from each other.
  • the construction could be such that only two opposite sides of the brick A have surfaces which are downwardly inclined away from each other.
  • every brick A thus comprises a lower portion A7 in the form of a first truncated pyramid, and an intermediate portion A8 in the form of a second truncated pyramid of a smaller base area than the top area of the first truncated pyramid, said intermediate portion A8 connecting with the lower portion A7.
  • the first truncated pyramid A7 is substantially centred relative to the second truncated pyramid A8. This results in the surfaces A13, A23, A33 and A43.
  • Each brick A further comprises an upper portion A9 connecting with the intermediate portion A8 and serving to support the brick A in the superjacent supporting structure, which in the case shown in Fig. 3 comprises box girders 50 which are in turn supported by an additional roof 51.
  • the upper portion of the bricks A comprises two lugs A91, A93 which project from opposite sides of the upper portion A9 such that the upper part of the upper portion A9 is insertable into a box girder 50 to be supported by this.
  • the bricks B further have the same cross-sectional shape as the directly supported bricks A transversely of the longitudinal direction of the rows, for example rows 4, 6.
  • the bricks C between two neighbouring rows, for instance rows 4 and 6, of the directly supported bricks A each have essentially parallel surfaces C11, C12, C31, C32 on their two opposite sides transversely of the rows 4-6.
  • the supporting structure can be designed in some other manner than the one illustrated in Figs 3 and 4.
  • bricks C bricks of essentially the same shape as the bricks B and bricks having a shape complementary thereto could be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
EP95850113A 1994-06-21 1995-06-20 Feuerfeste Decke und Stein dafür Withdrawn EP0689021A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402204A SE9402204L (sv) 1994-06-21 1994-06-21 Eldfast tak och eldfast sten till detta
SE9402204 1994-06-21

Publications (1)

Publication Number Publication Date
EP0689021A1 true EP0689021A1 (de) 1995-12-27

Family

ID=20394487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95850113A Withdrawn EP0689021A1 (de) 1994-06-21 1995-06-20 Feuerfeste Decke und Stein dafür

Country Status (2)

Country Link
EP (1) EP0689021A1 (de)
SE (1) SE9402204L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818366A1 (fr) * 2000-12-18 2002-06-21 P A Technologies Dispositif pour l'ancrage des revetements refractaires sur les parois des fours industriels, et fours equipes de tels dispositifs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117902909A (zh) * 2024-03-19 2024-04-19 阳城县圣利安建材有限公司 一种焦宝石砖及制造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE462609C (de) * 1926-02-10 1928-07-14 Michael Gorfinkel Freihaengende flache Feuerraumdecke
DE592091C (de) * 1932-11-29 1934-02-01 Hermann Meyer Feuerraumdecke
US2067414A (en) * 1935-03-18 1937-01-12 George P Reintjes Arch and arch block
FR886284A (fr) * 1942-09-30 1943-10-11 Steinmueller Gmbh L & C Perfectionnements apportés aux voûtes suspendues de foyers
DE1109824B (de) * 1959-01-21 1961-06-29 Lucien Chevalier Rohrfoermiger Tragkoerper fuer ein aufgehaengtes Gewoelbe
FR1599545A (de) * 1968-09-05 1970-07-15
EP0163866A1 (de) * 1984-05-16 1985-12-11 Krupp Polysius Ag Decken- und Wandkonstruktion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE462609C (de) * 1926-02-10 1928-07-14 Michael Gorfinkel Freihaengende flache Feuerraumdecke
DE592091C (de) * 1932-11-29 1934-02-01 Hermann Meyer Feuerraumdecke
US2067414A (en) * 1935-03-18 1937-01-12 George P Reintjes Arch and arch block
FR886284A (fr) * 1942-09-30 1943-10-11 Steinmueller Gmbh L & C Perfectionnements apportés aux voûtes suspendues de foyers
DE1109824B (de) * 1959-01-21 1961-06-29 Lucien Chevalier Rohrfoermiger Tragkoerper fuer ein aufgehaengtes Gewoelbe
FR1599545A (de) * 1968-09-05 1970-07-15
EP0163866A1 (de) * 1984-05-16 1985-12-11 Krupp Polysius Ag Decken- und Wandkonstruktion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818366A1 (fr) * 2000-12-18 2002-06-21 P A Technologies Dispositif pour l'ancrage des revetements refractaires sur les parois des fours industriels, et fours equipes de tels dispositifs

Also Published As

Publication number Publication date
SE9402204L (sv) 1995-12-22
SE9402204D0 (sv) 1994-06-21

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