EP0916917A1 - Schutzeinrichtung für Einbauten eines Drehrohkühler in der Zementindustrie - Google Patents

Schutzeinrichtung für Einbauten eines Drehrohkühler in der Zementindustrie Download PDF

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Publication number
EP0916917A1
EP0916917A1 EP97203588A EP97203588A EP0916917A1 EP 0916917 A1 EP0916917 A1 EP 0916917A1 EP 97203588 A EP97203588 A EP 97203588A EP 97203588 A EP97203588 A EP 97203588A EP 0916917 A1 EP0916917 A1 EP 0916917A1
Authority
EP
European Patent Office
Prior art keywords
cooler
lifters
clinker
lifter
cap
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.)
Granted
Application number
EP97203588A
Other languages
English (en)
French (fr)
Other versions
EP0916917B1 (de
Inventor
Helmut Arnold
Bruno Wolan
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.)
Magotteaux International SA
Original Assignee
Magotteaux International SA
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 Magotteaux International SA filed Critical Magotteaux International SA
Priority to DE69723268T priority Critical patent/DE69723268T2/de
Priority to EP19970203588 priority patent/EP0916917B1/de
Priority to ES97203588T priority patent/ES2202540T3/es
Priority to BR9804559A priority patent/BR9804559A/pt
Priority to TR1998/02336A priority patent/TR199802336A2/xx
Publication of EP0916917A1 publication Critical patent/EP0916917A1/de
Application granted granted Critical
Publication of EP0916917B1 publication Critical patent/EP0916917B1/de
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
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • 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
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F27B7/162—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels

Definitions

  • the present invention relates to a device for protecting lifters in rotary tubular and satellite coolers cement plant, said lifters being in the form of a tunnel with an arc of almost 180 ° and designed to be fixed by their base on the face inside of a cylindrical shell constituting the wall of the cooler which is traversed longitudinally by clinker intended to be cooled by air passing through the cooler in the opposite direction to the clinker progression.
  • tubular coolers are intended to cool down to a lowest possible temperature, the clinker which has been heated in a clinkerization oven at temperatures of the order of 1450 ° C. Cooling is carried out as the progression progresses axial of the clinker through the cooler thanks to an air circulation against the grain, which makes it possible to recover, at least in part, the clinker heat.
  • the cooler is lined with lifters which, during the rotation of the shell, raise the clinker and improve heat exchange with air when the clinker falls at the bottom of the shell.
  • lifters of the kind described in the preamble i.e. in the shape of an arc
  • Zement-Kalk-Gips No. 6/1992 are proposed in the publication "Zement-Kalk-Gips No. 6/1992 ". These are arc-shaped lifters or tunnel whose interior fills when passing to the bottom of the cooler. These lifters allow better lifting of the clinker and therefore better contact with the cooling air.
  • lifters are exposed to very poor working conditions severe. They must not only have good properties refractory and good resistance to wear and abrasion, but also a certain ductility to resist stresses mechanical. However, it is well known that these properties are not compatible with each other and that the choice of material for the lifters must, therefore, constitute a compromise which must necessarily be made at the expense of either of these properties. The result is that the lifters are subject to rapid wear and have, in general, too short a service life.
  • the object of the present invention is to provide a device for protection of the lifters which makes it possible to significantly extend their duration on duty.
  • the present invention provides a lifter protection device in a tubular cooler rotary cement plant of the kind described in the preamble which is characterized in that the lift vault is topped with a hat protection with good wear resistance.
  • the invention thus makes it possible to distribute tasks and power choose for the hat, on the one hand, and for the reliever, on the other hand, materials whose properties are most suitable for each of the two parts withstands the conditions and stresses well to which it is exposed.
  • the hat is advantageously made up of two parts separated longitudinally at the top of the take-up vault. Each of these parts has, for reference, on the entry side from the cooler, a radial flange. These two parts of the hat can be fixed each with a through fixing rod this radial flange and the lifter.
  • the lifter generally represented by the reference 10 on the Figure 1 is a tunnel-shaped lifter made up of two sections 12 and 14 in the form of an arc articulated to each other by their apex and intended to be fixed on the inner wall of a cylindrical shell 16 of a tubular cooler using fixing supports 18.
  • the base of section 14 which, viewed in the direction of rotation of the cooler, is at the front, is more shorter than the base of the rear section 12, so that the lifter has, seen in developed, a trapezoid shape.
  • Each of the two sections 12 and 14 constituting the lifter comprises a full arch 20 provided with external reinforcing ribs 22 which extend radially from the base of each section 12 and 14 to the articulated summit. These ribs give more resistance mechanical lifters 10.
  • the vault full 22 degrades quickly and even disappears completely, if although only the reinforcing ribs 22 remain. obvious that, under these conditions, the lifters can no longer correctly perform their function of lifting the clinker.
  • the present invention provides for styling each lifter 10 of a protective hat generally designated by the reference 30.
  • the cap 30 is preferably made up of two parts 32 and 34 adapted to the two sections 12 and 14 of the lifter which are separated longitudinally at the top of the lifter 10. Both parts 32, 34 have flanges on the inlet side of the cooler radial 36, 38 which hold the cap on the lifters and which protect the lifters from wear by the clinker advancing in the cooler.
  • the fixing of the cap 30 is carried out using rods of fixing 40 passing through the flanges 36 and 38 and the ribs 22 to which they can be welded.
  • the caps 30 essentially cover the upper part of the arch of the lifters 10, where degradation by heat and by wear is the most important, but can extend to all near the base of the lifters 10.
  • the caps 30 are made of a refractory material having good wear resistance, such as refractory steel chrome or even ceramic. When the caps 32 are worn, it it is possible to replace or even recharge them. It is also possible to let the lifters wear out until a stop program. In any event, tests have shown that the protective hats proposed by the present invention allow double the lifespan of lifters.

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)
  • Furnace Details (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP19970203588 1997-11-18 1997-11-18 Schutzeinrichtung für Streuschaufel eines Drehrohkühlers in der Zementindustrie Expired - Lifetime EP0916917B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69723268T DE69723268T2 (de) 1997-11-18 1997-11-18 Schutzeinrichtung für Streuschaufel eines Drehrohkühlers in der Zementindustrie
EP19970203588 EP0916917B1 (de) 1997-11-18 1997-11-18 Schutzeinrichtung für Streuschaufel eines Drehrohkühlers in der Zementindustrie
ES97203588T ES2202540T3 (es) 1997-11-18 1997-11-18 Dispositivo de proteccion de elevadores en un refrigerador tubular rotativo de fabrica de cemento.
BR9804559A BR9804559A (pt) 1997-11-18 1998-11-05 Dispositivo de proteção de levantadores em um resfriador tubular rotativo de cimenteira
TR1998/02336A TR199802336A2 (xx) 1997-11-18 1998-11-17 Çimento imalathanesinin döner borulu soğutucusundakı kaldırma tablalarını koruyucu tertibat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970203588 EP0916917B1 (de) 1997-11-18 1997-11-18 Schutzeinrichtung für Streuschaufel eines Drehrohkühlers in der Zementindustrie

Publications (2)

Publication Number Publication Date
EP0916917A1 true EP0916917A1 (de) 1999-05-19
EP0916917B1 EP0916917B1 (de) 2003-07-02

Family

ID=8228934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970203588 Expired - Lifetime EP0916917B1 (de) 1997-11-18 1997-11-18 Schutzeinrichtung für Streuschaufel eines Drehrohkühlers in der Zementindustrie

Country Status (5)

Country Link
EP (1) EP0916917B1 (de)
BR (1) BR9804559A (de)
DE (1) DE69723268T2 (de)
ES (1) ES2202540T3 (de)
TR (1) TR199802336A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208248A1 (de) * 2002-02-26 2003-09-04 Kloeckner Humboldt Wedag Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119108A1 (de) * 1981-05-14 1982-12-02 O & K Orenstein & Koppel AG, 4600 Dortmund "waermetauscher fuer rieselfaehiges gut"
EP0367956A1 (de) * 1988-11-05 1990-05-16 Klöckner-Humboldt-Deutz Aktiengesellschaft Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119108A1 (de) * 1981-05-14 1982-12-02 O & K Orenstein & Koppel AG, 4600 Dortmund "waermetauscher fuer rieselfaehiges gut"
EP0367956A1 (de) * 1988-11-05 1990-05-16 Klöckner-Humboldt-Deutz Aktiengesellschaft Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SU ILLUSTRATED WEEK D16, no. 28599, XP002061523 *
SU ILLUSTRATED WEEK E35, no. 74234, XP002061522 *
SU ILLUSTRATED WEEK K23, no. 55851, XP002061517 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208248A1 (de) * 2002-02-26 2003-09-04 Kloeckner Humboldt Wedag Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Also Published As

Publication number Publication date
DE69723268D1 (de) 2003-08-07
TR199802336A3 (tr) 1999-06-21
ES2202540T3 (es) 2004-04-01
EP0916917B1 (de) 2003-07-02
DE69723268T2 (de) 2004-05-27
TR199802336A2 (xx) 1999-06-21
BR9804559A (pt) 2001-03-20

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