EP2784421B1 - Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif - Google Patents

Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif Download PDF

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Publication number
EP2784421B1
EP2784421B1 EP13161360.6A EP13161360A EP2784421B1 EP 2784421 B1 EP2784421 B1 EP 2784421B1 EP 13161360 A EP13161360 A EP 13161360A EP 2784421 B1 EP2784421 B1 EP 2784421B1
Authority
EP
European Patent Office
Prior art keywords
arch
lining
furnace
base
brick
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.)
Active
Application number
EP13161360.6A
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German (de)
English (en)
Other versions
EP2784421A1 (fr
Inventor
Andreas Ing. Wlry
Roland Mag. Krischanitz
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.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
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
Priority to EP13161360.6A priority Critical patent/EP2784421B1/fr
Application filed by Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to ES13161360.6T priority patent/ES2564757T3/es
Priority to PL13161360T priority patent/PL2784421T3/pl
Priority to US14/648,487 priority patent/US20150308745A1/en
Priority to RU2015120690A priority patent/RU2670821C9/ru
Priority to MX2015006903A priority patent/MX340425B/es
Priority to PCT/EP2014/050068 priority patent/WO2014154364A1/fr
Priority to CN201480003305.6A priority patent/CN104813128B/zh
Priority to BR112015011539-0A priority patent/BR112015011539B1/pt
Publication of EP2784421A1 publication Critical patent/EP2784421A1/fr
Application granted granted Critical
Publication of EP2784421B1 publication Critical patent/EP2784421B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
    • 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
    • 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
    • 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
    • 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
    • F27D1/06—Composite bricks or blocks, e.g. panels, modules
    • 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
    • F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
    • F27D2001/047—Lining of cylindrical vessels

Definitions

  • the invention relates to an arch brick according to DIN1082-4, January 2007 edition, a cylindrical inner lining of a rotary kiln, the lining containing these arching stones and a rotary kiln with the lining and the vault stones.
  • the warping stones, the lining and the rotary kiln are described below in a mounting / operating position of the furnace.
  • These vaulting stones are used for lining a rotary kiln, for example a rotary kiln for the production of cement clinker.
  • the rectangular larger base area AG is then outside, the rotary kiln shell adjacent, while the rectangular smaller base surface IG is located inside, facing the furnace interior.
  • the stones are arranged so that their length (I) runs in the axial direction of the furnace.
  • the basic installation of the vaulting stones in a rotary kiln results from the standard and the following state of the art: DE 2643412 A .
  • DE 29921607 U1 can be summarized as follows:
  • the cambers are arranged in ring-like segments in the circumferential direction of the furnace next to each other. Several segments are arranged one behind the other in the axial direction of the furnace.
  • the DE 299 21 607 U1 proposes to weld a metallic ring to the outer furnace shell.
  • the ring forms a kind of counter bearing for the axial pressure described above.
  • the ring is rectangular in cross-section, the "height" in the radial direction can be low (in practice: about 50-70mm), because the metallic material is too little temperature resistant and the temperature in the furnace increases from outside to inside.
  • the small contact or contact surface between ring and refractory lining stone causes a high surface pressure.
  • the strength of the ceramic stones is often exceeded. It cracks or stones are crushed by the axial thrust within the stone lining.
  • the inclination angle of the abutment is limited to ⁇ 20 degrees, so that the metal parts can still be sufficiently protected by the radially inner adjacent refractory bricks.
  • the invention has for its object to offer a solution for the described axial loads in a rotary kiln, which avoids the disadvantages mentioned.
  • the axial pressure within the refractory ceramic furnace liner can not be eliminated.
  • the invention has recognized, however, that the function of an abutment (to compensate for the axial pressure within the lining) can be taken over by the refractory lining itself when the lining stones are split in the radial direction, thereby forming inclined surfaces between adjacent stone elements.
  • the stone sections can therefore be larger (deeper) than the metal rings, in particular in the radial direction. Retrofitting into existing systems is possible because the stone sections used can complement each other geometrically to a vault of conventional design and replace it completely.
  • the invention relates to a vault according to DIN 1082-4, January 2007 edition, which extends along at least one parting surface which extends from the base AG to an end face TS2 or another base surface IG, in at least two discrete (separate) stone Sections is divided.
  • the core idea of the invention is therefore to divide a known vault in several parts (two, three or more).
  • the parts of this set can again form-fit together to form a vault stone, namely exactly form-fitting or with (expansion) joints between the individual sections and / or so that expansion joints to adjacent vaulting arise.
  • These expansion joints can be filled during or after the lining with seals, in particular elastic seals such as fiber materials.
  • the geometry and arrangement of at least one stone section can be similar to the geometry and arrangement of a metallic fixture according to DE 29921607 U1 be.
  • This inclined surface is rising (viewed from the furnace entrance to the furnace exit and from the furnace wall to the furnace interior) and also serves according to the invention as a ramp surface for the lining stones arranged in front of it (in the direction of the furnace entrance).
  • the axial pressure of the stones is thus compensated by this "separation surface", which has the function of an abutment.
  • the inclined surface serves to redirect the axial thrust of the lining to a considerable extent in the radial and circumferential direction of the cylinder-like rotary kiln. This reduces the mechanical load on this stone part and at the same time there is a relatively even load distribution in the adjacent region of the furnace lining.
  • cambering stones according to the invention are placed next to one another in order to form a complete lining ring, the result of the ring geometry is an introduction of the force into the metallic furnace shell and thus a further pressure relief for the refractory material.
  • the stone sections may be made of conventional refractory materials, such as alumina, magnesia, silicon carbide, zirconia, etc. materials.
  • the stone section which serves to absorb the axial thrust load, can be made of a material with particularly high compressive strength, in particular high hot compressive strength, for example from an offset (English: batch) having the following composition (all figures in% by mass) :
  • the separating surface between adjacent stone parts extends at an angle ⁇ 20 degrees to the outer base area AG, which angle can also be much larger, for example ⁇ 25 degrees, ⁇ 30 degrees or ⁇ 40 degrees.
  • the angle must be less than 90 degrees to fulfill the desired task as a "thrust bearing" or casserole bearing.
  • the angle is, in one embodiment, ⁇ 75 degrees, often ⁇ 60 degrees or ⁇ 45 degrees.
  • the axial pressure in the refractory lining increases in the direction of the furnace exit. It is therefore useful to provide in this area a ring of the invention vault stones.
  • cambers can be changed as described above.
  • the invention also includes an industrial rotary kiln with a cylindrical inner lining of the type described above.
  • FIG. 5 shows - in a highly schematic representation - a vertical longitudinal section through a cement rotary kiln with an outer furnace shell 20 and radially inside arranged, cylindrical refractory lining 30 between a furnace inlet OE and a furnace outlet OA.
  • rings 30a ... 30z conventional vault stones arranged in the axial direction (arrow A) are consecutively several rings 30a ... 30z conventional vault stones arranged, as is known.
  • a ring 30w can be seen, which is formed from vaulting stones shaped according to the invention, namely vaulted stones FIG. 2 ,
  • the separation surface / inclined surface TF between the stone parts 10,12 assumes the function of an abutment to at least partially absorb the axial pressure (P A ) in front of the furnace entrance OE arranged Völbsteine and divert into the furnace wall 20 and adjacent Wölbsteine.
  • FIG. 6 shows a perspective, partially cutaway interior view of a portion of the refractory lining 30 of a rotary kiln in the range of a stone row 30w of inventive multi-part domes analog Fig. 3 ,

Landscapes

  • 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)

Claims (12)

  1. Voussoir selon DIN 1082-4, édition de janvier 2007, divisé en au moins deux portions de pierre discrètes (10, 12), le long d'au moins une surface de séparation (TF) s'étendant à partir de la surface de base (AG) jusqu'à une surface frontale (TS2) ou jusqu'à une autre surface de base (IG).
  2. Voussoir selon la revendication 1, dont la surface de séparation (TF) s'étend sous un angle > 20 degrés par rapport à la surface de base (AG).
  3. Voussoir selon la revendication 1, dont la surface de séparation (TF) s'étend sous un angle ≤ 75 degrés par rapport à la surface de base (AG).
  4. Voussoir selon la revendication 1, dont la surface de séparation (TF) s'étend sous un angle ≤ 60 degrés par rapport à la surface de base (AG).
  5. Voussoir selon la revendication 1, avec au moins une portion de pierre (10, 12) présentant deux surfaces supérieures opposées (RS1*, RS2*) respectivement trapézoïdales.
  6. Voussoir selon la revendication 1, avec au moins une portion de pierre (10) présentant deux surfaces supérieures opposées (RS1*, RS2*) respectivement triangulaires.
  7. Voussoir selon la revendication 1, avec au moins une portion de pierre (10) présentant deux surfaces supérieures opposées (RS1*, RS2*) respectivement pentagonales.
  8. Voussoir selon la revendication 5, 6 ou 7, dans lequel les surfaces supérieures opposées (RS1*, RS2*) sont identiques.
  9. Voussoir selon la revendication 1, dont la surface de séparation (TF) est planaire.
  10. Habillage intérieur cylindrique (30) d'un four tubulaire rotatif industriel, avec les caractéristiques suivantes :
    a) l'habillage (30) s'étend entre une entrée de four (OE) à une première extrémité du four tumulaire rotatif et une sortie de four (OA) à une deuxième extrémité du four tubulaire rotatif,
    b) l'habillage (30) est essentiellement constitué de segments annulaires (30a ... 30z) agencés les uns à la suite des autres,
    c) au moins un segment annulaire (30w) étant majoritairement constitué de voussoirs selon la revendication 1, lesquels sont juxtaposés avec leurs surfaces latérales (RS1, RS2) dans le sens du pourtour et s'étendent à l'extérieur avec leurs grandes surface de base (AG),
    d) les surfaces de séparation (TF) des voussoirs s'étendant à partir de la grande surface de base (AG), vers la sortie de four (OA).
  11. Habillage selon la revendication 10, avec des voussoirs selon l'une des revendications 2 - 9.
  12. Four tubulaire rotatif industriel avec un habillage intérieur cylindrique (30) selon la revendication 10 ou 11.
EP13161360.6A 2013-03-27 2013-03-27 Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif Active EP2784421B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES13161360.6T ES2564757T3 (es) 2013-03-27 2013-03-27 Dovela de revestimiento interior cilíndrico de un horno tubular giratorio y horno tubular giratorio
PL13161360T PL2784421T3 (pl) 2013-03-27 2013-03-27 Kształtka klinowa ogniotrwała cylindrycznej wewnętrznej wykładziny pieca obrotowego i piec obrotowy
EP13161360.6A EP2784421B1 (fr) 2013-03-27 2013-03-27 Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif
RU2015120690A RU2670821C9 (ru) 2013-03-27 2014-01-06 Сводовый кирпич, цилиндрическая внутренняя облицовка вращающейся трубчатой печи и вращающаяся трубчатая печь
US14/648,487 US20150308745A1 (en) 2013-03-27 2014-01-06 Arch brick, cylindrical internal lining of a rotary kiln and rotary kiln
MX2015006903A MX340425B (es) 2013-03-27 2014-01-06 Dovela, revestimiento interior cilíndrico de horno de tambor y horno de tambor.
PCT/EP2014/050068 WO2014154364A1 (fr) 2013-03-27 2014-01-06 Voussoir, revêtement intérieur cylindrique d'un four rotatif et four rotatif
CN201480003305.6A CN104813128B (zh) 2013-03-27 2014-01-06 楔形砖、回转窑的圆柱状内衬砌以及回转窑
BR112015011539-0A BR112015011539B1 (pt) 2013-03-27 2014-01-06 Tijolo em arco, revestimento cilíndrico interno de um forno rotativo e um forno rotativo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13161360.6A EP2784421B1 (fr) 2013-03-27 2013-03-27 Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif

Publications (2)

Publication Number Publication Date
EP2784421A1 EP2784421A1 (fr) 2014-10-01
EP2784421B1 true EP2784421B1 (fr) 2016-02-03

Family

ID=48050458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13161360.6A Active EP2784421B1 (fr) 2013-03-27 2013-03-27 Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif

Country Status (9)

Country Link
US (1) US20150308745A1 (fr)
EP (1) EP2784421B1 (fr)
CN (1) CN104813128B (fr)
BR (1) BR112015011539B1 (fr)
ES (1) ES2564757T3 (fr)
MX (1) MX340425B (fr)
PL (1) PL2784421T3 (fr)
RU (1) RU2670821C9 (fr)
WO (1) WO2014154364A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2577662C1 (ru) * 2014-11-25 2016-03-20 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Футеровка вращающейся печи
CN109694177A (zh) * 2018-06-21 2019-04-30 巨石集团有限公司 一种玻璃纤维池窑通路碹顶结构
CN112013684A (zh) * 2019-07-08 2020-12-01 张晓伟 一种回转窑用耐火砖及方法

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Also Published As

Publication number Publication date
MX340425B (es) 2016-07-08
MX2015006903A (es) 2015-09-08
US20150308745A1 (en) 2015-10-29
WO2014154364A1 (fr) 2014-10-02
CN104813128A (zh) 2015-07-29
PL2784421T3 (pl) 2016-06-30
RU2670821C2 (ru) 2018-10-25
BR112015011539B1 (pt) 2019-07-09
CN104813128B (zh) 2017-03-22
ES2564757T3 (es) 2016-03-28
RU2670821C9 (ru) 2018-11-28
EP2784421A1 (fr) 2014-10-01
RU2015120690A (ru) 2017-05-12
BR112015011539A2 (pt) 2017-07-11

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