EP0645190A2 - Hubelement für Rohrmühle und Rohrmühle versehen mit solchen Elementen - Google Patents

Hubelement für Rohrmühle und Rohrmühle versehen mit solchen Elementen Download PDF

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Publication number
EP0645190A2
EP0645190A2 EP94114265A EP94114265A EP0645190A2 EP 0645190 A2 EP0645190 A2 EP 0645190A2 EP 94114265 A EP94114265 A EP 94114265A EP 94114265 A EP94114265 A EP 94114265A EP 0645190 A2 EP0645190 A2 EP 0645190A2
Authority
EP
European Patent Office
Prior art keywords
elements
mill
lifting
crusher
grinding machines
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
EP94114265A
Other languages
English (en)
French (fr)
Other versions
EP0645190A3 (de
EP0645190B1 (de
Inventor
Jean-Marie Brisbois
Serge Rycerski
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
Publication of EP0645190A2 publication Critical patent/EP0645190A2/de
Publication of EP0645190A3 publication Critical patent/EP0645190A3/de
Application granted granted Critical
Publication of EP0645190B1 publication Critical patent/EP0645190B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B02C17/225—Lining for containers using rubber or elastomeric material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/30—Rubber elements in mills

Definitions

  • the present invention relates to a lifting element for a rotary mill consisting of a parallelepipedal elastomer block designed to be fixed to the inner wall of a rotary mill containing grinding machines and to form part of the shielding thereof.
  • the invention also relates to a rotary crusher comprising a cylindrical shell, the inner shielding of which includes such lifters.
  • the invention relates more particularly to the field of wet mills, in particular those used in cement works or in the mining industry for crushing and grinding ores.
  • These grinders consist of a cylindrical shell rotating around its longitudinal axis and containing a grinding load consisting of grinding machines such as balls, cylpebs, boulpebs, etc. of different dimensions.
  • the ferrule has an inner shield consisting of shielding plates and so-called lifting elements or levers having the function of brewing and driving the grinding load and the material to be ground. This is introduced on one side of the mill and, as it progresses towards the exit, on the opposite side, it is ground and crushed between the grinding machines.
  • the grinding Since the grinding is carried out gradually in the direction of the passage through the grinder, the best grinding conditions are achieved when the size of the grinding machines is adapted to that of the material to be ground.
  • the largest grinding machines should preferably be concentrated on the inlet side of the crusher, while the smallest should be on the outlet side. This is called the classification of grinding machines according to their size. Under optimal conditions, this classification should therefore be carried out automatically during the operation of the mill.
  • the shields of mills working in the wet process have been either of cast iron or alloy steel or of elastomer.
  • the cast iron or alloy steel shields have the disadvantage of a heavy weight and a tedious handling during the installation of the elements forming the shielding. In addition, they are extremely noisy and no longer meet the increasingly severe environmental criteria.
  • the elastomeric shields had more lifting elements than those of the metallic shields. These thicker and more protruding elements always tend to project the grinding bodies during the rotation of the grinder. However, the projection of the grinding machines reduces the efficiency of the grinding and accelerates the wear of the grinding machines by fragmentation and micro-chipping.
  • the purpose of the present invention is to provide a new elastomeric lifting element which is less exposed to wear, as well as a crusher in which these new elements are arranged so as to ensure the desired classification of the grinding machines and to improve grinding efficiency.
  • the lifting element proposed by the present invention is characterized in that at least a part of its face exposed to the grinding machines has cells to allow the grinding machines to be embedded therein.
  • the grinding machines which thus become encrusted, during the grinding operation, in the lifting elements, generally remain attached thereto under the effect of the elasticity of the elastomer.
  • the invention also provides a mill equipped with such lifting elements and in which these elements and the armor plates are arranged in alternating longitudinal rows.
  • each row of lifting elements comprises, over at least part of the length of the ferrule, straight elements parallel to the generator of the ferrule and elements inclined relative to the generator of the ferrule.
  • Each straight element is preferably surrounded by two inclined elements and vice versa.
  • the straight elements and the inclined elements have different radial thicknesses. Thanks to this design, it causes, in the diametral planes of the mill, relative movements and sliding between the different layers of the grinding load and the material to be ground.
  • the reference 10 in FIG. 1 represents a metallic cylindrical shell of a crusher with an internal coating forming a shield 12 for protecting the shell 10.
  • This shield consists of shielding plates 14 as well as lifting elements 16 fixed to using appropriate bolts 18 on the ferrule.
  • the armor plates 14 are not fixed directly to the shell 10 but are held in place by means of the attachments of the neighboring lifting elements 16.
  • the ferrule 10 is designed to be rotated about its longitudinal axis in the direction of the arrow A. During this rotation, the function of the lifting elements 16 whose radial thickness is greater than that of the armor plates 14 is d '' drive the grinding charge and the material to be ground not shown. Since the mill is only partially filled, generally on the order of 30%, the grinding charge and the material to be ground accumulate, during the rotation of the mill, essentially in the fourth trigonometric quarter of the mill seen in the axial direction of Figure 1. Following the winding of this mass around oneself and the relative sliding between the different layers, the material is crushed progressively by the crushing charge as it progresses from the entry up to the mill outlet.
  • the lifting elements 16 are parallelepipedal blocks of elastomer, for example rubber, fixed in longitudinal rows on the wall of the shell 10.
  • the radial side 20 of each lifting element 16 in the attack zone of the grinding load, seen in the direction of rotation A, is shallower than the opposite radial side 22 so that the face 24 exposed to the load and connecting the sides 20 and 22 is oblique with respect to the shell.
  • This face 24 can be straight or slightly curved as shown in FIG. 1.
  • the face 24 of each lifting element 16 comprises a series of cells 26. These can be distributed in a regular or random manner over the entire length of the lifting elements, the main thing being that the grinding machines can become embedded therein during the operation of the crusher in order to improve the resistance of the lifting elements 16 to wear.
  • the dimensions of the lifting elements are generally larger if the filling factor of the mill is greater or if the mill rotates more slowly.
  • the armor plates 14 can be made of elastomer, either of the cellular type with inlay, or with a surface roughness.
  • the lifters are arranged in a particular arrangement contributing to greater grinding efficiency. Indeed, as shown in Figure 2, the lifting elements are arranged in longitudinal rows a which alternate with longitudinal rows b of armor plates.
  • each row a of lifting elements comprises, according to a preferred embodiment, a series of straight elements 16a, that is to say parallel to the generator of the mill and a series of inclined elements 16b relative to the generator of the mill.
  • the arrangement and arrangement of the straight elements 16a and of the inclined elements 16b can be modified over the length of the mill according to the operating conditions of the mill, in particular as regards the speed of rotation, the filling coefficient and the diameter of the mill.
  • each row has lifting elements comprises an alternating succession of straight elements and inclined elements. It is preferable to provide, in the entrance area of the grinder, not shown in the Figure but located on the left side thereof, only straight elements.
  • the lifting elements 16b are inclined in the direction of the outlet of the mill, which is on the right side of the Figure.
  • both the direction and the angle of inclination of the lifting elements can be modified according to the nature and shape of the grinding machines in order to obtain the best classification effect.
  • the straight lifting elements 16a and the inclined lifting elements 16b do not have the same thickness.
  • the inclined elements 16b are thicker than the straight elements 16a, but the opposite is also possible.
  • the purpose of this design is to cause, during the rotation of the mill, in diametrical planes, shearing between different layers of the grinding load and the material to be ground.
  • the level of the shielding is uniform from the inlet to the outlet of the mill.
  • the level of the shielding is slightly higher at the outlet than at the inlet so that the section of the mill is slightly convergent towards the outlet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP94114265A 1993-09-17 1994-09-10 Hubelement für Rohrmühle und Rohrmühle versehen mit solchen Elementen Expired - Lifetime EP0645190B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU88409 1993-09-17
LU88409A LU88409A1 (fr) 1993-09-17 1993-09-17 Elément de relevage pour broyeur rotatif et broyeur équipé de tels éléments

Publications (3)

Publication Number Publication Date
EP0645190A2 true EP0645190A2 (de) 1995-03-29
EP0645190A3 EP0645190A3 (de) 1995-08-16
EP0645190B1 EP0645190B1 (de) 1999-12-08

Family

ID=19731444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114265A Expired - Lifetime EP0645190B1 (de) 1993-09-17 1994-09-10 Hubelement für Rohrmühle und Rohrmühle versehen mit solchen Elementen

Country Status (8)

Country Link
US (1) US5516051A (de)
EP (1) EP0645190B1 (de)
AU (1) AU672717B2 (de)
BR (1) BR9403086A (de)
CA (1) CA2132240C (de)
DE (1) DE69421988T2 (de)
LU (1) LU88409A1 (de)
ZA (1) ZA937490B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2176553C1 (ru) * 2001-01-15 2001-12-10 Предприятие с иностранными инвестициями Общество с ограниченной ответственностью "Научно-производственное предприятие АЛТАЙПОЛИМЕР" Футеровка барабанной мельницы самоизмельчения
RU2193924C2 (ru) * 2001-01-12 2002-12-10 Открытое акционерное общество "ТЯЖМАШ" Броня клиновая
RU2284861C1 (ru) * 2005-02-01 2006-10-10 Закрытое акционерное общество "Кварц" Барабанная мельница
CN102847590A (zh) * 2012-09-14 2013-01-02 沈阳恒创思源矿业科技开发有限公司 非均匀永磁场超高分子量聚乙烯磁性衬板

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842654A (en) * 1993-04-23 1998-12-01 Slegten Societe Anonyme Device for fixing a partition for tube mill and method for this purpose
US6082646A (en) * 1999-07-07 2000-07-04 Me International Fastening system for liner assemblies of ore mills
US6651709B1 (en) * 2002-09-11 2003-11-25 Cae Wood Products, G.P. Retractable debarking apparatus
CA2600972C (en) * 2005-01-18 2015-11-24 Vulco S.A. Cushioning element for mill liner
US20060169359A1 (en) * 2005-01-28 2006-08-03 Carmanah Design And Manufacturing Inc. Debarking apparatus with adjustable rate of debarking
US7354266B2 (en) * 2005-01-31 2008-04-08 Metso Minerals Industries, Inc. Replaceable lump breaker system for a rotary kiln
SE531347C2 (sv) * 2007-07-10 2009-03-03 Metso Minerals Wear Prot Ab Slitfoderelement och anordning för fastsättning av sådant
US9533309B2 (en) * 2010-12-14 2017-01-03 Weir Minerals Australia Ltd. Lifter bar with attachment point for hoisting
CA2764262C (en) 2011-01-13 2019-03-05 Polycorp Ltd. Mill liner assembly
AU2013100347A4 (en) * 2012-11-21 2013-05-02 HAIG, Ian E. A guard
US9475057B2 (en) * 2013-01-24 2016-10-25 Cabot Corporation Liner elements with improved wear-life for grinding operations
CN106061614A (zh) * 2013-10-17 2016-10-26 泰加工业有限公司 有梯级的提升条
US20150224509A1 (en) * 2014-02-12 2015-08-13 Kennametal Inc. Grain mill liner assembly
US10456884B2 (en) 2016-05-19 2019-10-29 Polycorp Ltd. Liner system for a mill shell
MX2019008669A (es) * 2017-01-26 2019-09-13 Outotec Finland Oy Mejoras en molinos de lecho agitado.
CL2017002894A1 (es) * 2017-11-14 2019-06-14 Asesorias Y Servicios Innovaxxion Spa Lifter multicapa para molinos semiautógenos o molinos sag.

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US1539237A (en) * 1924-02-11 1925-05-26 John Herman Screening ball mill
US1921672A (en) * 1931-12-21 1933-08-08 Goodrich Co B F Ball mill lining
US2809789A (en) * 1953-12-29 1957-10-15 Allis Chalmers Mfg Co Ball mill liner
US2876957A (en) * 1954-10-23 1959-03-10 Henricot Usines Emile Sa Ribbed frusto-conical lining for tube mills
US2949247A (en) * 1956-11-20 1960-08-16 Bofors Ab Liners for ball and tube mills
SU613545A1 (ru) * 1975-06-12 1979-08-25 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Механической Обработки Полезных Ископаемых "Механобр" Футеровка барабана мельницы самоизмельчени
US4289279A (en) * 1977-02-25 1981-09-15 Trelleborg Ab Mill lining
SE417282B (sv) * 1977-05-16 1981-03-09 Socared Sa Kvarninfodring
SE421868B (sv) * 1979-07-13 1982-02-08 Socared Sa For notning utsatt vegg, vilken vid anvendning utsettes for notning av stycke- eller partikelformigt gods, som omfattar magnetiska partiklar
SE434805B (sv) * 1980-06-10 1984-08-20 Skega Ab Slitgodsinfodring av gummi for roterande trummor
SU1079286A1 (ru) * 1982-12-03 1984-03-15 Акмянское Ордена Трудового Красного Знамени Цементно-Шиферное Производственное Объединение Им.50-Летия Ссср "Акмянцементас" Конусно-ступенчата бронефутеровка трубной мельницы
SU1217468A1 (ru) * 1984-10-08 1986-03-15 Днепропетровский Ордена Ленина Металлургический Завод Им.Петровского Бронефутеровка барабанной мельницы
FR2615412A1 (fr) * 1987-05-22 1988-11-25 Magotteaux Sa Piece d'usure composite pour broyeurs horizontaux
AU654608B2 (en) * 1992-01-10 1994-11-10 Envirotech Pumpsystems, Inc. Grinding mill, lining and associated method of manufacture
SE468627B (sv) * 1992-02-14 1993-02-22 Harald Kenneth Lejonklou Slitelement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2193924C2 (ru) * 2001-01-12 2002-12-10 Открытое акционерное общество "ТЯЖМАШ" Броня клиновая
RU2176553C1 (ru) * 2001-01-15 2001-12-10 Предприятие с иностранными инвестициями Общество с ограниченной ответственностью "Научно-производственное предприятие АЛТАЙПОЛИМЕР" Футеровка барабанной мельницы самоизмельчения
RU2284861C1 (ru) * 2005-02-01 2006-10-10 Закрытое акционерное общество "Кварц" Барабанная мельница
CN102847590A (zh) * 2012-09-14 2013-01-02 沈阳恒创思源矿业科技开发有限公司 非均匀永磁场超高分子量聚乙烯磁性衬板

Also Published As

Publication number Publication date
EP0645190A3 (de) 1995-08-16
EP0645190B1 (de) 1999-12-08
CA2132240C (en) 2004-11-23
ZA937490B (en) 1994-04-25
CA2132240A1 (en) 1995-03-18
DE69421988D1 (de) 2000-01-13
US5516051A (en) 1996-05-14
BR9403086A (pt) 1995-05-02
AU7163894A (en) 1995-03-30
DE69421988T2 (de) 2000-04-20
AU672717B2 (en) 1996-10-10
LU88409A1 (fr) 1994-04-01

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