US3762123A - Refractory burned brick assembly for suspended roofs of furnaces - Google Patents

Refractory burned brick assembly for suspended roofs of furnaces Download PDF

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Publication number
US3762123A
US3762123A US00200891A US3762123DA US3762123A US 3762123 A US3762123 A US 3762123A US 00200891 A US00200891 A US 00200891A US 3762123D A US3762123D A US 3762123DA US 3762123 A US3762123 A US 3762123A
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United States
Prior art keywords
brick
recess
support member
assembly
refractory
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Expired - Lifetime
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US00200891A
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English (en)
Inventor
K Potocnik
G Haubold
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Didier Werke AG
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Didier Werke AG
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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
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • F27D1/147—Assembling elements for bricks
    • F27D1/148—Means to suspend bricks

Definitions

  • ABSTRACT A prefabricated refractory brick and hanger strap assembly of the burned or ceramically fired type useable particularly in the construction of suspension ceilings of a furnace.
  • the brick is provided with a generally trapezoidal shaped recess formed and opening at an intersection ofa long and short side, and on the interface side most remote from the heat of the furnace.
  • a brick suspension plate is partially embedded in the recess after the brick is fired, and is covered by a cementiou s motar-like refractory material in a manner'preferably flush with the adjacent interface sides, whichmaterial, when set, provides an airtight and heat protective coating for the suspension plate.
  • the latter plate is provided with an aperture in the upright projecting part thereof for suspension during construction of the furnace.
  • the suspension plate is provided at one end with a preformed refractory material corresponding generally to that of the brick material and of a complemental size and trapezoidal or other desired shape to be bonded to the brick to form a permanent connection of the hanger or support plate within the brick reccss.
  • the invention relates to an improved refractory brick and hanger plate assembly for use in constructing furnace suspended roofs, and which bricks are of the burned or ceramically fired type and provided with a recess to receive a supporting member therein.
  • Supporting members in conjunction with burned type bricks of this type are known in different forms, for instance, as cover plate bricks whereby sheet iron linings or cover plates are put onto the brick after the firing of the brick, such as disclosed in US. Pat Nos. 3,029,755; 3,282,231 and 3,374,594.
  • cover plate bricks whereby sheet iron linings or cover plates are put onto the brick after the firing of the brick
  • a pin-type plate refers generally to a straight, flat sheet metal band provided with a suspension eye on one end and a borehole on the other.
  • Such a support plate is interposed between two bricks which, adjacent their interface which is remote from the furnace, have transversely disposed boreholes for cooperation with a pin which traverses these boreholes and the corresponding boreholes of the cover plate, much on the order of that disclosed in U.S. Pat. No. 1,197,842, and also as discussed in the German Auslegeschrift (printed application) No. 1,901,025 in the fourth paragraph of column 1.
  • the suspension strip or plate is confined largely between the bricks and is, therefore, somewhat protected against premature scaling. Nevertheless, in instances where the sheet iron lining is used, it and/or the suspension strip is progressively oxidized and prematurely worn away to the extent that many break during the last wearing period of the brick, when actually a significant useable portion of approximately 200 mm of the brick still remains. This phenomenon is caused by excessive heat transfer through the partially worn-away brick, so that the suspension plate during the wear period of the remaining 200 mm is subjected to considerably hotter than the 800C at which temperature even high-grade chrome-nickel steels tend to scale.
  • the present invention consists of an improved support plate arrangement for ceramically fired or burned type bricks in order to reduce the scaling of the suspension plate for the bricks to a minimum amount, and to make them commensurate to cold set or chemically formed bricks, the latter of which have the suspension plate usually integrally molded into the brick material.
  • An object of the invention is to provide for an improved brick assembly in which the brick is a burned type brick having the recess of the brick into which the supporting member engages open partially or entirely onto the interface and sides of the brick which are remotely opposite to the hotest part of the furnace, and to accommodate and embed the supporting member at least to the level of this interface by covering the part set in the recess with a refractory and airtight material.
  • the recess which is formed into a large surface brick side widens downwardly and inwardly, and one end of the supporting member, which is to extend into the recess, is correspondingly bent towards the center of the brick commencing in the area of the interface edge, and the other end of the supporting member protrudes from the interface side in a manner generally coplanar to the side surface of the brick.
  • a further object is to provide a brick in which one end of the supporting member may be entirely surrounded by refractory and air-tight material in the area highly exposed to thermal stress, whereby the material in the form of a settable cementious layer can be applied on and around that portion of the supporting member, which together are set into the recess of the brick, and when the cementious refractory material hardens securely fastens the strap to it.
  • the supporting member in the recess is covered at least flush with the interface sides with the filled refractory material, and the other end of the support plate or member projects outwardly away from the interface of the brick.
  • FIG. 1 is a perspective view of a brick provided with a recess
  • FIG. 2 is a fragmentary vertical longitudinal section of a brick taken through the brick having a supporting member shown embedded with refractory material within the recess;
  • FIG. 3 is a perspective view on an enlarged scale of an alternate and prefabricated form of hanger or supporting member which is preferably bonded firmly with the recess of a brick;
  • FIG. 4 is a perspective view on a smaller scale of the hanger of FIG. 3, but viewed from the opposite side thereof;
  • FIG. 5 is a fragmentarycross-sectional view similar to the upper part of FIG. 2 of a slightly modified form thereof.
  • FIG. 6 is an elevational view on a smaller scale of the combined brick and a further modified form of suspension plate.
  • a refractory brick 1 has formed at the intersection of a large surface side 2 of the brick and the interface 4 opposite the furnace side, a recess 5 which has a generally trapezoidal cross-section with the small aperture 6 oriented toward the interface 4.
  • the recess 5 widens downwardly toward the center of the brick.
  • one end 70 of a supporting plate 7 is embedded within a quick-hardening refractory mortar or similar acting substance 8, which is sealed smoothly and adheres strongly to the sides of the brick when it sets, as well as to the support plate.
  • the support plate 7 is bent angularly approximately at its middle with the embeddable end 70 angularly projecting into the recess and with the opposite end 7b projecting upwardly out of the narrow portion 6 of the longitudinally extended recess 5, and in a manner substantially coplanar with the large surface side 2.
  • the embedded end 7a may be laterally flared to correspond with the wedge shape, as per FIG. 6, and/or it may have a flap l4 struck out from the body, as per FIGS. 2, 3 and 4, to act as an anchoring aid.
  • the upwardly projecting free end 7b is provided with an eye 9 formed therein to facilitate suspending of the brick in a known manner.
  • a supporting plate 10 similar to plate 7, is embedded into a separately molded refractory body or shape 11 which corresponds complementally to the three-dimensional trapezoidal or other predetermined-shape of the brick recess.
  • This form is manufactured separately and is adapted to be set and preferably bonded, as by a suitable refractory type adhesive, into the correspondingly shaped brick recess.
  • the refractory material of the premolded body 11 preferably extends almost to the suspension eye 12 of the upwardly projecting portion of the cover plate, which, as in the first-described embodiment, is adapted to project above the interface in a manner as to be coplanar with the surface 2 of the brick.
  • a refractory brick assembly useable in construction of suspension ceilings for high temperature furnaces heated to temperatures considerably in excess of 800C., said assembly comprising a refractory brick of the burned or ceramically fired type made of a first refractory material and having four interconnected side faces and respectively adjoining top and bottom faces; a non-rectangularly shaped recess having a widest portion extending inwardly generally toward the center of the brick, said recess commonly opening at an intersection of only one of said side faces with the adjoining top face, and said recess having a narrowest portion opening at said top face which constitutes the interface of said brick disposed most remotely from the heat of the furnace; a support member of generally flat plate heatdurable material having one end extended into said recess but spaced from the walls thereof; said one end of said support member having a rigid covering of a second refractory material, said second refractory material being of a type which hardens more quickly than said first refractory material and fully enclosing said end in
  • a brick assembly as defined in claim 4 further having means bonding said pre-molded form permanently to said brick within said recess.
  • said support member end extending inwardly of the brick is formed to be laterally wider at the lowermost portion corresponding generally to that of the widest portion of said recess.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Finishing Walls (AREA)
  • Building Environments (AREA)
US00200891A 1969-01-10 1971-11-22 Refractory burned brick assembly for suspended roofs of furnaces Expired - Lifetime US3762123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1901025 1969-01-10

Publications (1)

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US3762123A true US3762123A (en) 1973-10-02

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US00200891A Expired - Lifetime US3762123A (en) 1969-01-10 1971-11-22 Refractory burned brick assembly for suspended roofs of furnaces

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US (1) US3762123A (de)
AT (1) AT297572B (de)
DE (1) DE1901025C2 (de)
GB (1) GB1292261A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122642A (en) * 1977-07-14 1978-10-31 Plibrico (Canada) Limited Refractory liner block
US20030086761A1 (en) * 2001-11-07 2003-05-08 Anderson Darrys Rhett Multi-purpose precast barrier
US20060242914A1 (en) * 2005-04-29 2006-11-02 Harbison-Walker Refractories Company Refractory block and refractory wall assembly
USD591778S1 (en) 2005-04-29 2009-05-05 Harbison-Walker Refractories Company Refractory block

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1197842A (en) * 1916-02-21 1916-09-12 Edward C Meier Furnace-lining for marine casings.
US2433175A (en) * 1943-01-08 1947-12-23 Ferro Eng Co Refractory lining
US2840017A (en) * 1954-04-13 1958-06-24 Bigelow Liptak Corp Suspension means for refractory tile
DE1178166B (de) * 1962-09-21 1964-09-17 Didier Werke Ag Feuerfester Haengestein mit Lasche
GB1019335A (en) * 1963-04-30 1966-02-02 Steetley Refractory Brick Comp Improvements in or relating to refractory bricks
US3251324A (en) * 1964-01-29 1966-05-17 Gen Refractories Ltd Suspended refractory bricks
US3292333A (en) * 1963-05-01 1966-12-20 Harbison Carborundum Corp Wear-resistant refractory lining article

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527221A (de) *
GB1044095A (en) * 1964-10-02 1966-09-28 Detrick M H Co Composite refractory furnace wall and component anchor brick
AT293588B (de) * 1966-10-14 1971-10-11 Veitscher Magnesitwerke Ag Feuerfester Hängestein

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1197842A (en) * 1916-02-21 1916-09-12 Edward C Meier Furnace-lining for marine casings.
US2433175A (en) * 1943-01-08 1947-12-23 Ferro Eng Co Refractory lining
US2840017A (en) * 1954-04-13 1958-06-24 Bigelow Liptak Corp Suspension means for refractory tile
DE1178166B (de) * 1962-09-21 1964-09-17 Didier Werke Ag Feuerfester Haengestein mit Lasche
GB1019335A (en) * 1963-04-30 1966-02-02 Steetley Refractory Brick Comp Improvements in or relating to refractory bricks
US3292333A (en) * 1963-05-01 1966-12-20 Harbison Carborundum Corp Wear-resistant refractory lining article
US3251324A (en) * 1964-01-29 1966-05-17 Gen Refractories Ltd Suspended refractory bricks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122642A (en) * 1977-07-14 1978-10-31 Plibrico (Canada) Limited Refractory liner block
US20030086761A1 (en) * 2001-11-07 2003-05-08 Anderson Darrys Rhett Multi-purpose precast barrier
US20060242914A1 (en) * 2005-04-29 2006-11-02 Harbison-Walker Refractories Company Refractory block and refractory wall assembly
USD591778S1 (en) 2005-04-29 2009-05-05 Harbison-Walker Refractories Company Refractory block

Also Published As

Publication number Publication date
AT297572B (de) 1972-03-27
DE1901025B1 (de) 1970-06-25
GB1292261A (en) 1972-10-11
DE1901025C2 (de) 1971-02-11

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