EP1166876A1 - Auskleidung für Drehtrommelmühle - Google Patents

Auskleidung für Drehtrommelmühle Download PDF

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Publication number
EP1166876A1
EP1166876A1 EP00202178A EP00202178A EP1166876A1 EP 1166876 A1 EP1166876 A1 EP 1166876A1 EP 00202178 A EP00202178 A EP 00202178A EP 00202178 A EP00202178 A EP 00202178A EP 1166876 A1 EP1166876 A1 EP 1166876A1
Authority
EP
European Patent Office
Prior art keywords
mill
fin
base
deflectors
shield
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Withdrawn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
EP00202178A
Other languages
English (en)
French (fr)
Inventor
Robert Schneider
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP00202178A priority Critical patent/EP1166876A1/de
Priority to CNB018115993A priority patent/CN1305575C/zh
Priority to ES01947375T priority patent/ES2312452T3/es
Priority to JP2002503449A priority patent/JP2003535690A/ja
Priority to HU0301539A priority patent/HU228663B1/hu
Priority to CZ20024234A priority patent/CZ298084B6/cs
Priority to US10/311,089 priority patent/US6951315B2/en
Priority to AU6907901A priority patent/AU6907901A/xx
Priority to RU2003102371/03A priority patent/RU2266789C2/ru
Priority to KR1020027017451A priority patent/KR100754645B1/ko
Priority to EP01947375A priority patent/EP1292394B1/de
Priority to PT01947375T priority patent/PT1292394E/pt
Priority to PCT/EP2001/006867 priority patent/WO2001097975A1/fr
Priority to MXPA02012720A priority patent/MXPA02012720A/es
Priority to BRPI0111794-7A priority patent/BR0111794B1/pt
Priority to AT01947375T priority patent/ATE406958T1/de
Priority to DE60135651T priority patent/DE60135651D1/de
Priority to PL358740A priority patent/PL198458B1/pl
Priority to CA002413342A priority patent/CA2413342A1/fr
Priority to AU2001269079A priority patent/AU2001269079B2/en
Publication of EP1166876A1 publication Critical patent/EP1166876A1/de
Priority to ZA200300613A priority patent/ZA200300613B/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers

Definitions

  • the present invention relates to a shield for a tubular crusher rotary comprising a packed cylindrical ferrule intended to contain of the material to be ground and a charge of grinding material, in which the shielding consists of rings of individual shielding plates juxtaposed.
  • the invention relates more particularly to the shredders used for the dry grinding of cement (clinker), coal, limestone and dry or wet ores.
  • These shredders consist of a metallic cylindrical shell rotating around its longitudinal axis and containing a grinding charge consisting of grinding media, generally balls, but can also be made of cylpebs, boulpebs, etc., of variable dimensions.
  • the material to be ground is introduced on one side of the grinder and, as it progresses towards the outlet, on the opposite side, it is crushed and ground between the machines grinding.
  • a conventional mill is generally divided, in the direction axial, by means of a diametrical partition dividing into two chambers successive.
  • the first room in which the crushing takes place coarse material contains grinding balls usually having a diameter between 60 mm and 90 mm.
  • These shields are, moreover, very sensitive to grains, that is to say when there is a certain accumulation of very hard grains (about 6 to 12 mm) in areas where small grinding devices are found, the classification is very disturbed, up to the reverse classification, that is to say the return of small devices to the entrance and large devices to the exit.
  • the plates have corrugations which can be tilted at an angle of 15 to 30 ° relative to the generator of the mill.
  • the purpose of the inclination of these undulations is to create a screw effect to act on the grinding charge and the material to be ground. Indeed, when the crusher rotates, large grinding machines are generally found, in majority, at the periphery of the grinding load and the purpose of the inclination of the corrugations is to push these grinding machines by screw effect towards the entrance of the grinding chamber. In practice, the desired classification of this however is very difficult and often random.
  • the plates are also relatively heavy and the ranking effect decreases as measurement of the progress of the wear of the corrugations.
  • the object of the present invention is to provide a new shielding for a tubular mill which eliminates or, at least, reduces the disadvantages of conventional shielding, more specifically a grinder with lighter armor which creates a good ranking, which is effective and very flexible to use.
  • the present invention provides a grinder tubular of the kind described in the preamble which is characterized in that that a number of armor plates found in places selected consist of deflectors comprising a fin erected from the field on a base plate fixed to the ferrule and forming an angle less than 25 ° relative to a diametrical plane of the mill.
  • the lateral side of the fin located on the front side, viewed in the direction of rotation of the mill, is preferably beveled, this beveling being provided on the side facing the entrance to the mill.
  • This beveled lateral side of the fin is located, relative to the direction material advancement, set back from the lateral side opposite.
  • This inclination of the fins which is preferably greater than 5 °, thus creates a helix effect which promotes the progression of the material and contributes to the classification of shredding machines.
  • the fin can form an integral part of the base plate and be made together with it by casting.
  • the fin can also be a separate piece, integral with a base provided with a hole so that it can be fixed to the shell of the mill.
  • This base may have a frusto-conical periphery which may enter an opening complementary in shape to a base plate. So fixing the fin by its base constitutes, at the same time, a fixing of the plate basic to the ferrule.
  • a number of armor plates are formed in the form of deflectors 20 such as shown in Figures 1 and 2,
  • Figure 1 is a bird's-eye view on a deflector 20 while
  • FIG. 2 is a side view in the direction of arrow II in FIG. 1 which also represents the direction of rotation of the mill.
  • Each deflector has a plate of base 22 provided with a central hole 24 to be fixed on the interior wall of the crusher shell.
  • a fin 26 which is erected on the plate 22, preferably perpendicularly to this one.
  • This fin 26 can have a thickness of between 25 and 50 mm and a height (radial to the mill) of preferably between 100 and 350 mm.
  • each fin 26 is inclined relative to a diametral plane of the mill at an angle ⁇ less than 25 °, preferably between 5 ° and 25 ° depending on the conditions of the grinder and the nature of the grinding load and the material to be ground.
  • This edge 28 facilitates penetration into the load and contributes continuous lifting, i.e. prevents projection of gear shredding on the armor.
  • the fins 26 will generally be made of very hard cast iron or steel if the grinding working conditions are harsher, for example example when using grinding balls 90 mm in diameter.
  • the face working of these deflectors that is to say the face turned towards the exit of the grinder (to the right in Figure 1), as well as edge 28 can be made more resistant to abrasion wear by using padding (i.e. a mixture of metal and ceramic material).
  • padding i.e. a mixture of metal and ceramic material.
  • Figures 3, 4 and 5 each show part of the shell of the grinder in development and with different configuration examples placement of the deflectors.
  • the arrow R designates the direction of rotation of the mill while arrow D designates the direction of movement of the material to be ground.
  • the designated plates by A are conventional normal plates, while the plates designated by B are plates designed in accordance with the present invention as deflectors.
  • each deflector B is adjacent to another deflector B at the two diametrically opposite corners to thus define a full or partial spiral all around the inside of the shell.
  • Figure 4 shows a configuration similar to that of Figure 3 with the difference that between a deflector B and two neighboring deflectors of the same spiral is a longitudinal row of plates A without deflectors.
  • Figure 5 shows an example of a configuration similar to that of Figure 4, but here each deflector B is separated from neighboring deflectors of the same spiral by a diametrical row of plate without deflectors. Note that, in this configuration, the axial spacing between two deflectors neighbors is larger than in the configurations of figures 3 and 4.
  • the number of deflectors can vary between 5% and 15% of the total number of armor plates.
  • Figure 6 shows the complete development of a shell of a grinder 4 meters in diameter and 10 meters long.
  • the deflectors are arranged in a spiral in the grinder according to the configuration of the figure 3.
  • Another advantage is that the material to be ground is pushed faster through the crusher and there is, thanks to these deflectors, better mixing between the grinding media and the material to be ground.
  • the deflector shown in the figures 1 and 2 is a single piece produced by casting. We will describe below, with reference to the following figures, an embodiment with a composite deflector.
  • This composite deflector generally designated by the reference 30 in FIG. 7, has a fin 36 comparable to the fin 26 of Figures 1 and 2 but provided at its base with a base 34 which, in the mode of shown embodiment, has a square shape.
  • the base 34 and the fin 36 form a single piece which can be produced by casting but separate from the base plate 32.
  • This base plate has a opening 40 of shape complementary to that of the base 34 and forming a frame to receive it.
  • the base 34 and the opening 40 of the base plate 32 have complementary frustoconical sections, so that when the base 34 is disposed in its housing of the base plate 32 and is fixed, through its fixing hole 38, to the ferrule of the crusher, the base plate 32 is held in place by the base 34 and no longer needs to be attached to the shell.
  • parts are provided filling 42 shown in Figures 10 and 11. These parts of filling 42 have exactly the same shape and the same section as the bases 34 shown in FIGS. 7 to 9 but are devoid of the fins 36. These parts make it possible to fill the openings 40 in the plates basic 32 when it is desired to remove, as desired, certain deflectors 30 shown in FIGS. 7 to 9. It suffices, in fact, to unbolt the base 34, to remove it with its fin 36, to fill the opening with the piece of filling 42 and bolt it to the ferrule through its opening central 44.
  • the fins 26 and 36 shown in the different figures do not due to their bevelled edge 28, are suitable only for a grinder turning in the direction shown in Figures 1 and 3 to 5. In a grinder turning in the opposite direction, it is necessary to provide deflectors which are symmetrical with respect to those shown in the figures.
  • Standard base plates are usually thick average of ⁇ 40 mm, i.e. a DIN standard plate (314.16 x 250 mm) has a weight of the order of 24 kg.
  • a DIN standard plate 314.16 x 250 mm
  • the assembly of a fin and a base weighs a maximum of 25 kg. Therefore, from an ergonomic and security in mounting the shielding, the deflectors proposed do not constitute not a handicap.
  • the comparison shows a decrease in weight of almost 25%.
  • the weight per m 2 would be 366 kg corresponding to a total weight of ⁇ 55,200 kg, ie a decrease of around 20%.
  • a standard class shielding we are sometimes faced with the problem that we cannot absorb all the available power of the engine driving the crusher. This is due to the average thickness of these shields which reduces the useful interior volume of the mill.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP00202178A 2000-06-23 2000-06-23 Auskleidung für Drehtrommelmühle Withdrawn EP1166876A1 (de)

Priority Applications (21)

Application Number Priority Date Filing Date Title
EP00202178A EP1166876A1 (de) 2000-06-23 2000-06-23 Auskleidung für Drehtrommelmühle
PT01947375T PT1292394E (pt) 2000-06-23 2001-06-14 Blindagem para triturador tubular rotativo
PCT/EP2001/006867 WO2001097975A1 (fr) 2000-06-23 2001-06-14 Blindage pour broyeur tubulaire rotatif
ES01947375T ES2312452T3 (es) 2000-06-23 2001-06-14 Blindaje para molino tubular rotativo.
HU0301539A HU228663B1 (hu) 2000-06-23 2001-06-14 Csõmalom palástbélés és csõmalom
CZ20024234A CZ298084B6 (cs) 2000-06-23 2001-06-14 Pancérové vylození pro trubnatý rotacní mlýn
US10/311,089 US6951315B2 (en) 2000-06-23 2001-06-14 Tubular rotary mill liner
AU6907901A AU6907901A (en) 2000-06-23 2001-06-14 Tubular rotary mill liner
RU2003102371/03A RU2266789C2 (ru) 2000-06-23 2001-06-14 Футеровка барабанной мельницы
MXPA02012720A MXPA02012720A (es) 2000-06-23 2001-06-14 Revestimiento de molino tubular giratorio.
EP01947375A EP1292394B1 (de) 2000-06-23 2001-06-14 Auskleidung für drehtrommelmühle
CNB018115993A CN1305575C (zh) 2000-06-23 2001-06-14 旋转式管状碾磨机用的衬垫
JP2002503449A JP2003535690A (ja) 2000-06-23 2001-06-14 管状回転ミル用のライナー
KR1020027017451A KR100754645B1 (ko) 2000-06-23 2001-06-14 튜브형 회전 분쇄기 라이너
BRPI0111794-7A BR0111794B1 (pt) 2000-06-23 2001-06-14 camisa de moinho giratório tubular.
AT01947375T ATE406958T1 (de) 2000-06-23 2001-06-14 Auskleidung für drehtrommelmühle
DE60135651T DE60135651D1 (de) 2000-06-23 2001-06-14 Auskleidung für drehtrommelmühle
PL358740A PL198458B1 (pl) 2000-06-23 2001-06-14 Wykładzina obrotowego młyna rurowego oraz obrotowy młyn rurowy
CA002413342A CA2413342A1 (fr) 2000-06-23 2001-06-14 Blindage pour broyeur tubulaire rotatif
AU2001269079A AU2001269079B2 (en) 2000-06-23 2001-06-14 Tubular rotary mill liner
ZA200300613A ZA200300613B (en) 2000-06-23 2003-01-22 Tubular rotary mill liner.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00202178A EP1166876A1 (de) 2000-06-23 2000-06-23 Auskleidung für Drehtrommelmühle

Publications (1)

Publication Number Publication Date
EP1166876A1 true EP1166876A1 (de) 2002-01-02

Family

ID=8171673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202178A Withdrawn EP1166876A1 (de) 2000-06-23 2000-06-23 Auskleidung für Drehtrommelmühle

Country Status (2)

Country Link
EP (1) EP1166876A1 (de)
ZA (1) ZA200300613B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833892C (de) * 1947-11-18 1952-03-13 Fischer Ag Georg Panzerplatten-Auskleidung fuer Rohrmuehlen
US4211370A (en) * 1978-11-24 1980-07-08 Midland-Ross Corporation Lining for grinding mills
SU1144719A1 (ru) * 1983-03-17 1985-03-15 Montvila Vintsas V Бронефутеровка трубной мельницы

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833892C (de) * 1947-11-18 1952-03-13 Fischer Ag Georg Panzerplatten-Auskleidung fuer Rohrmuehlen
US4211370A (en) * 1978-11-24 1980-07-08 Midland-Ross Corporation Lining for grinding mills
SU1144719A1 (ru) * 1983-03-17 1985-03-15 Montvila Vintsas V Бронефутеровка трубной мельницы

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section PQ Week 8539, 8 November 1985 Derwent World Patents Index; Class P41, AN 85-241638, XP002151998 *

Also Published As

Publication number Publication date
ZA200300613B (en) 2004-02-03

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