US3593476A - Rotary cement kiln lining brick - Google Patents

Rotary cement kiln lining brick Download PDF

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Publication number
US3593476A
US3593476A US789298A US3593476DA US3593476A US 3593476 A US3593476 A US 3593476A US 789298 A US789298 A US 789298A US 3593476D A US3593476D A US 3593476DA US 3593476 A US3593476 A US 3593476A
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US
United States
Prior art keywords
brick
side faces
bricks
kiln
lining
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 - Lifetime
Application number
US789298A
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English (en)
Inventor
Friedrich Hodl
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.)
Veitscher Magnesitwerke AG
Original Assignee
Veitscher Magnesitwerke AG
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 Veitscher Magnesitwerke AG filed Critical Veitscher Magnesitwerke AG
Application granted granted Critical
Publication of US3593476A publication Critical patent/US3593476A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • 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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/28—Arrangements of linings

Definitions

  • the present invention relates to an improved rcfractory brick for rotary cementkiln linings, and to such linings.
  • a refractory brick having an inner face, an outer face and a plurality of side faces extending from the inner to the outer face.
  • the side faces intersect at edges which are beveled at leastalong a portion of their length extending from the inner brick face, with adjoining beveled edges of adjacent bricks in the lining forming channels open to the interior of the kiln before the kiln is put into operation and 'of sufficient dimension to remain open after the kiln has been heated to facilitate anchoring of a cement-clinker coating on the lining.
  • the channels formed by the beveled brick edges extend only to a point spaced from the outer face which is cooler during operation of the kiln than theinner face.
  • the bricks are of square cro ss section and are so beveled at their edges that the inner face of each brick is a regular octagon, the adjoining beveled edges of four adjacent bricks forming a channel of square cross section.
  • the open channels provide improved anchorage for the coating fonning on the kiln lining during operation and, if
  • the walls of the open channels may carry a substance I to which the-coating adheres particularly well. It is important,
  • each brick I has an outer face Id, an inner face 1c, the inner brick faces being hot during the kiln operation while the outer faces remain cooler.
  • Anotherportion A extending from the outer faces of the bricks, is filled in, as shown at le, so that a blind channel 2 is formed by four adjoining beveled edges of four adjacent bricks.
  • the channels 2 remain open put into operation so that the coating formed during operation IS deposited not only on the inner faces of the bricks but is anchored in the open channels.
  • This anchorage may be further improved if the walls of the channels 2 carry a thin layer of a substance to which the coating adheres particularly well.
  • Such layers may be applied, for instance, in the form of a slurry by spraying, such as is conventional in repairing kiln linings. This slurry will penetrate into the open channels but the amount must be controlled so that it will not close the channels upon heating of the bricks during operation of the kiln.
  • the brick illustrated in FIG. 3 is wedge-shaped and comprises a base portion 8 which forms the cooler face of the 'brick during the operation of the kiln, and a portion C which forms the hot face of the brick during the kiln operation.
  • the edges formed by the intersecting side faces If and 1g of the brick portion C are beveled, as shown at la.
  • the bricks may consist of any suitable refractory material
  • a useful brick material is magnesia which may contain up to about 20 percent, by weight, of chromite.
  • a refractory brick for a rotary cement kiln lining having an inner face, an outer face and a plurality of side faces extending from the inner to the outer face, the inner face being hot when the brick is part of said lining and the kiln is in operation, the side faces of the brick intersecting at beveled edges extending only to a point spaced from the outer face which is cooler than the inner face during operation of the kiln and on a plane oblique to, and intersecting, the adjacent side faces, adjoining beveled edges of adjacent ones of the bricks in the lining being adapted to form a channel extending from the inner face, and the dimensions of said beveled edges being such that the channels remain open at the inner face when the kiln is put into operation whereby a coating formed during said operation may be anchored in the open channels, said brick having a wedge-shaped base portion adjacent the outer face, and a recessed brick portion adjacent the inner face, the intersecting edges of the side faces being formed in the recessed
  • a refrac- .tory brick lining inside said casing comprising a plurality of rows of circumferentially juxtaposed bricks, each of said bricks having an outer face at the kiln casing, an inner face spaced radially inwardly from said outer face, a pair of opposite side faces which are parallel, and a pair of opposite side faces which are radially inwardly convergent so that the convergent side faces of the bricks in each row are in contact ing abutment in radial planes with respect to the circular casing and so that the parallel side faces-of bricks in adjacent rows are also in contacting abutment, each brick having beveled edges at the intersections of its parallel and convergent side faces, said beveled edges extending from the inner face of the brick to a point spaced inwardly from the outer bricks coact to form blind channels open at the inner faces of the bricks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US789298A 1968-01-05 1969-01-06 Rotary cement kiln lining brick Expired - Lifetime US3593476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT15768A AT280872B (de) 1968-01-05 1968-01-05 Feuerfester Stein, insbesondere Keilstein, zur Auskleidung von Drehrohröfen

Publications (1)

Publication Number Publication Date
US3593476A true US3593476A (en) 1971-07-20

Family

ID=3483050

Family Applications (1)

Application Number Title Priority Date Filing Date
US789298A Expired - Lifetime US3593476A (en) 1968-01-05 1969-01-06 Rotary cement kiln lining brick

Country Status (6)

Country Link
US (1) US3593476A (de)
AT (1) AT280872B (de)
DE (1) DE1817591A1 (de)
ES (1) ES144470Y (de)
FR (1) FR1600056A (de)
GB (1) GB1247942A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704782A (en) * 1993-11-17 1998-01-06 N.V. Gouda Vuurvast Wear lining for a rotary furnace

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US621100A (en) * 1899-03-14 Wiltxur w
US1123874A (en) * 1914-02-20 1915-01-05 Veitscher Magnesitwerke Ag Furnace-wall.
US1477811A (en) * 1923-08-14 1923-12-18 Crawford Charles James Metallurgical-furnace roof
DE421805C (de) * 1923-07-15 1925-11-21 Max Galke Kreuzweise bewehrte Hohlkoerper- oder Leichtkoerper-Eisenbetonrippendecke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US621100A (en) * 1899-03-14 Wiltxur w
US1123874A (en) * 1914-02-20 1915-01-05 Veitscher Magnesitwerke Ag Furnace-wall.
DE421805C (de) * 1923-07-15 1925-11-21 Max Galke Kreuzweise bewehrte Hohlkoerper- oder Leichtkoerper-Eisenbetonrippendecke
US1477811A (en) * 1923-08-14 1923-12-18 Crawford Charles James Metallurgical-furnace roof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704782A (en) * 1993-11-17 1998-01-06 N.V. Gouda Vuurvast Wear lining for a rotary furnace

Also Published As

Publication number Publication date
DE1817591A1 (de) 1969-08-21
ES144470U (es) 1969-04-16
GB1247942A (en) 1971-09-29
ES144470Y (es) 1970-01-16
AT280872B (de) 1970-04-27
FR1600056A (de) 1970-07-20

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