EP0645190B1 - Elément de relevage pour broyeur rotatif et broyeur équipé de tels éléments - Google Patents

Elément de relevage pour broyeur rotatif et broyeur équipé de tels éléments Download PDF

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Publication number
EP0645190B1
EP0645190B1 EP94114265A EP94114265A EP0645190B1 EP 0645190 B1 EP0645190 B1 EP 0645190B1 EP 94114265 A EP94114265 A EP 94114265A EP 94114265 A EP94114265 A EP 94114265A EP 0645190 B1 EP0645190 B1 EP 0645190B1
Authority
EP
European Patent Office
Prior art keywords
elements
mill
lifting
grinding
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
EP94114265A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0645190A2 (fr
EP0645190A3 (fr
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/fr
Publication of EP0645190A3 publication Critical patent/EP0645190A3/fr
Application granted granted Critical
Publication of EP0645190B1 publication Critical patent/EP0645190B1/fr
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 an element of linkage for rotary mill consisting of a block elastomeric parallelepiped designed to be fixed on the inner wall of a rotary grinder containing crushing machines and to be part of the armor of this one.
  • the invention also relates to a grinder rotary comprising a cylindrical ferrule whose interior shielding includes such lifters.
  • Relevege elements are known, for example FR-A-2 615 412 to US-A-1,921,672.
  • the invention relates more particularly to field of wet mills, especially those used in cement works or in the mining industry for crushing and grinding of ores.
  • These shredders consist of a rotating cylindrical shell around its longitudinal axis and containing a load grinding consisting of grinding devices such as balls, cylpebs, boulpebs, etc. of different dimensions.
  • the ferrule has an inner shield made up armor plates and so-called lifting or lifting elements having the function of stir and entrain grinding charge and matter to grind. This is introduced on one side of the mill and, as it progresses towards the outlet, on the opposite side, it is crushed and crushed between the grinding machines.
  • the grinding machines Since the grinding is carried out gradually in the direction of the grinder crossing, the better grinding conditions are achieved when the size of the grinding machines is adapted to that of the material to be ground. In other words, the grinding machines the larger ones should preferably focus on the inlet side of the mill, while the most little ones should end up on the exit side. This is called the classification of gear grinding depending on their size. In the optimal conditions, this classification should therefore be automatically perform during operation of the grinder.
  • the shields of the shredders working wet were either cast iron or alloy steel, either elastomer.
  • the shields in cast iron or alloy steel have the disadvantage of a weight high and tedious handling when putting in place of the elements forming the shielding. In addition, they are extremely noisy and no longer respond to increasingly stringent environmental criteria.
  • elastomer had more lift elements important than those of metal shielding. These thicker and more prominent elements always have tendency to project the crushing bodies during the rotation of the mill. Now, the projection of the machines grinders reduces grinding efficiency and accelerates wear of grinding machines by fragmentation and micro-chipping.
  • the object of the present invention is to provide a new elastomeric lifting element which is less exposed to wear, as well as a shredder in which these new elements are arranged to ensure the desired classification of grinding and improving equipment grinding efficiency.
  • the lifting element proposed by the present invention is characterized in that that at least part of its face exposed to devices grinders has cells to allow grinding machines to become embedded there.
  • the grinding machines which thus become encrusted, during the grinding operation, in the lifting elements, generally remain attached to it under the effect of 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 rows longitudinal alternating.
  • each row lifting elements comprises, on at least one part of the length of the ferrule, straight elements parallel to the generator of the ferrule and elements inclined with respect to the generator of the ferrule.
  • Each straight element is preferably surrounded by two inclined elements and vice versa.
  • this alternating combination straight and angled elements promotes classification of grinding machines along the length of the grinder in the desired direction, that is to say that the machines the largest shredders remain at the entrance to the grinder and the smallest are pushed back towards from the outlet, where the material to be ground is finer.
  • the elements straight and inclined elements have thicknesses different radials.
  • Reference 10 in Figure 1 represents a metallic cylindrical shell of a crusher with a inner lining forming a shield 12 of protection of the shell 10.
  • This shielding is constituted armor plates 14 as well as elements of linkage 16 fixed with appropriate bolts 18 on the ferrule.
  • the plates of shield 14 are not fixed directly to the shell 10 but are kept in place thanks to the fixings neighboring lifting elements 16.
  • the ferrule 10 is designed to be driven in rotation around its longitudinal axis in the direction of arrow A.
  • the function of lifting elements 16 whose radial thickness is greater than that of the shield plates 14 is entrain the grinding charge and the material to be ground not shown.
  • the shredder is not only partially filled, usually around 30%, the grinding charge and the material to be ground accumulate, during the rotation of the mill, basically in the fourth trigonometric quarter of the mill viewed in the axial direction of Figure 1.
  • the material is gradually crushed by the charge grinding as it progresses since entry to exit of the mill.
  • the lifting elements 16 are parallelepipedic blocks made of elastomer, for example rubber, fixed in longitudinal rows on the wall of the ferrule 10.
  • the radial side 20 of each element of lifting 16 in the attack zone of the load grinding, seen in the direction of rotation A, is less deep than the opposite radial side 22 so much so that the face 24 exposed to the load and connecting the sides 20 and 22 is oblique to the ferrule.
  • This face 24 can be straight or slightly domed as shown in Figure 1.
  • the face 24 of each lifting element 16 comprises a series of cells 26. These can be distributed regularly or randomly over the entire length of the lifting elements, the main thing being that the crushing machines can become encrusted there during the operation of the grinder to improve the resistance lifting elements 16 to wear.
  • the dimensions of the lifting elements are generally higher if the coefficient of filling the grinder is larger or if the grinder rotates more slowly.
  • the armor plates 14 can be in elastomer, either of the cellular type with inlay, either with a surface roughness.
  • the lifters are arranged according to a special arrangement contributing to greater grinding efficiency.
  • the elements of lift are arranged in longitudinal rows to which alternate with longitudinal rows b of plates shielding.
  • each row has elements of lifting includes, according to one embodiment preferred, a series of straight elements 16a, i.e. parallel to the generator of the mill and a series of elements 16 b inclined with respect to the generator of the crusher.
  • the arrangement and arrangement of straight elements 16a and inclined elements 16b is changeable on the length of the mill according to operating conditions of the crusher, particularly with regard to concerns the speed of rotation, the coefficient of filling and the diameter of the mill.
  • each row has of lifting elements comprises an alternating succession straight and angled elements. It is better to plan, in the entrance area of the crusher, not shown in the Figure but located on the left side of it, only elements rights.
  • the elements of lift 16b are inclined in the direction of the outlet of the crusher, which is on the right side of the Figure.
  • both the direction and the angle of the tilting elements can be modified according to the nature and form of grinding machines in order to obtain the best effect from ranking.
  • the elements of straight linkage 16a and the linkage elements inclined 16b do not have the same thickness.
  • the inclined elements 16b are thicker than the straight elements 16a, but the otherwise is also possible.
  • the goal of this design is to cause, when rotating the crusher, in diametrical planes, shears between different layers of the grinding charge and the material to be ground.
  • the level of the armor either uniform from the inlet to the outlet of the mill.
  • the level of shielding is slightly higher at the outlet than the inlet so that the section of the mill is slightly converging towards the exit.

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 Elément de relevage pour broyeur rotatif et broyeur équipé de tels éléments Expired - Lifetime EP0645190B1 (fr)

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 EP0645190A2 (fr) 1995-03-29
EP0645190A3 EP0645190A3 (fr) 1995-08-16
EP0645190B1 true EP0645190B1 (fr) 1999-12-08

Family

ID=19731444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114265A Expired - Lifetime EP0645190B1 (fr) 1993-09-17 1994-09-10 Elément de relevage pour broyeur rotatif et broyeur équipé de tels éléments

Country Status (8)

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

Families Citing this family (17)

* 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
WO2006076763A1 (en) * 2005-01-18 2006-07-27 Weir Minerals Australia Ltd 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
PE20171756A1 (es) * 2010-12-14 2017-12-14 Weir Minerals Australia Ltd Barra de levante con punto de fijacion para izar
US8622330B2 (en) 2011-01-13 2014-01-07 Polycorp Ltd. Mill liner assembly
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
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
PE20160642A1 (es) * 2013-10-17 2016-07-21 Tega Ind Ltd Barra elevadora con dibujo
US20150224509A1 (en) * 2014-02-12 2015-08-13 Kennametal Inc. Grain mill liner assembly
CA2967850A1 (en) 2016-05-19 2017-11-19 Polycorp Ltd. Liner system for a mill shell
WO2018138405A1 (en) * 2017-01-26 2018-08-02 Outotec (Finland) Oy Improvements in stirred bead grinding mills
CL2017002894A1 (es) * 2017-11-14 2019-06-14 Asesorias Y Servicios Innovaxxion Spa Lifter multicapa para molinos semiautógenos o molinos sag.

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE69421988T2 (de) 2000-04-20
BR9403086A (pt) 1995-05-02
EP0645190A2 (fr) 1995-03-29
ZA937490B (en) 1994-04-25
CA2132240C (en) 2004-11-23
LU88409A1 (fr) 1994-04-01
AU672717B2 (en) 1996-10-10
US5516051A (en) 1996-05-14
EP0645190A3 (fr) 1995-08-16
AU7163894A (en) 1995-03-30
CA2132240A1 (en) 1995-03-18
DE69421988D1 (de) 2000-01-13

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