EP3134212B1 - Galet de broyage comportant des inserts a massivite elevee - Google Patents

Galet de broyage comportant des inserts a massivite elevee Download PDF

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Publication number
EP3134212B1
EP3134212B1 EP15716795.8A EP15716795A EP3134212B1 EP 3134212 B1 EP3134212 B1 EP 3134212B1 EP 15716795 A EP15716795 A EP 15716795A EP 3134212 B1 EP3134212 B1 EP 3134212B1
Authority
EP
European Patent Office
Prior art keywords
inserts
grinding roller
insert
metal
roller
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.)
Not-in-force
Application number
EP15716795.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3134212A1 (fr
Inventor
Norbert Guerard
Eric Lejeune
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 PL15716795T priority Critical patent/PL3134212T3/pl
Publication of EP3134212A1 publication Critical patent/EP3134212A1/fr
Application granted granted Critical
Publication of EP3134212B1 publication Critical patent/EP3134212B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/004—Shape or construction of rollers or balls
    • B02C15/005—Rollers or balls of composite construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/06—Casting in, on, or around objects which form part of the product for manufacturing or repairing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like

Definitions

  • the present invention relates to grinding rollers made by casting in the technical field of the foundry. These rollers are used in vertical axis mills for the grinding of various materials including coal, cement raw material, clinker or slag.
  • the invention more particularly relates to grinding rollers having inserts with higher massivity modules than those of the state of the art, possibly reinforced with agglomerates of infiltrable ceramic grains during casting.
  • each insert has on at least one of its longitudinal flanks protruding ribs so as to form a space between two inserts juxtaposed.
  • preferential wear of the ductile alloy in the space is achieved, resulting in the formation of grooves between the inserts.
  • the massivity module is measured by the ratio of the volume to the surface. He is designated by V / S. This value, universally used by the founders, is notably taken into account in the calculation of the masselottage of the castings because, to obtain a sound part, it is appropriate that the weight has a ratio V / S higher than that of the piece to be cast.
  • the object of the present invention is to limit the disadvantages of the state of the art by minimizing the presence of grooves formed by the interstices between the inserts of a grinding roller. To reduce this number of grooves, it is necessary to increase the size and massiveness module of these inserts. With more massive inserts, the latent heat available during casting will be higher and allow easier infiltration infiltrable ceramic reinforcements thicker. In corollary, the invention thus allows the increase in the thickness of the ceramic reinforcement of the insert. By improving the conditions of infiltration of the reinforcement by the casting metal, one can use thicker reinforcements which in turn improve the wear resistance of the assembly.
  • the present invention discloses a grinding roller for mills with a vertical axis, produced by casting in a casting, said roller comprising inserts with a V / S massivity module of between 3 and 5 cm, preferably between 3.2 and 4.5. cm, said inserts being embedded in a metal matrix composed of ductile iron or steel.
  • the present invention also discloses a vertical axis mill comprising a grinding roller according to the invention.
  • the grooves between the inserts 2 of a grinding roller 1 constitute a preferential place of wear which not only adversely affects the life of the grinding roller 1, but also the grinding efficiency and the quality of the crushed product. . These grooves can also be a source of unwanted vibrations during the operation of the grinder 6. The wear is further accentuated in the case of inserts reinforced by infiltrable ceramics 5 because, creating itself, the groove deforce the edges of the insert 2, the optional ceramic reinforcement 5 therefore has a tendency to crumble and wear more quickly.
  • the depth of infiltration depends on the latent heat available and therefore the amount of liquid metal available to achieve the infiltration.
  • the quantity of metal available for a given insert volume is insufficient to correctly infiltrate a ceramic reinforcement beyond a thickness of about 50 mm.
  • the infiltrable ceramic reinforcement 5 is sometimes called a cake or "padding", "cake” or “wafer” in English and generally consists of an agglomerate of ceramic grains leaving gaps to let penetrate the casting metal. He is well known to the skilled person. In terms of composition, it is generally, without pretention to exhaustivity, oxides such as alumina, zirconia, alumina-zirconia, silica or metal nitrides, metal carbides such as carbide titanium or tungsten carbide, borides or mixtures of these various constituents.
  • the massivity module of the insert is therefore directly related to the infiltration capacity of the infiltratable ceramic reinforcement 5 of the insert 2 by the casting metal 4.
  • the number of inserts placed on the periphery of the grinding roller 1 is generally determined empirically by the dimension of the insert in order to obtain sufficient mechanical strength of the roller in use (see Fig. 5 ).
  • the thickness of the ceramic reinforcement 5 is set at a value of less than about 50 mm to ensure good infiltration during casting.
  • the lengths of the insert 2 and the ceramic reinforcement 5 are approximately equal to the width of the grinding roller 1.
  • the width of the ceramic reinforcement 5 generally corresponds to approximately the width of the insert (see FIG. Fig. 4 ).
  • the number of inserts as a function of the outer diameter of the roller is given by the upper curve of the figure 5 .
  • the inserts placed in the grinding rollers have a V / S ratio of between 1 and 2.8 cm (see Fig. 2a ).
  • the V / S ratio of the inserts should be between 3 and 5 cm, preferably between 3.2 and 4.5 cm and particularly preferably between 3.4 and 4 cm.
  • the figure 13a shows an insert 2 designed according to a preferred embodiment of the invention. It has, on the lateral faces, cylindrical recesses 3 which alternate concave parts and convex parts. During the casting of the metal constituting the structure of the roller 1, the recesses 3 are filled with metal and the alternation of shape of the recess 3 can generate stud-type connecting elements with undercuts allowing a high performance fixing of inserts 2 in their metal matrix 4. They solidarisent the inserts 2 with the structure of the roller 1.
  • the insert 2 generally comprises a small thickness protrusion on the lower face, thus eliminating the risk of sliding in the radial direction of the roller 1.
  • This small thickness protrusion may be in particular in the form of a dovetail assuring anchoring, as illustrated in particular in figure 11b .
  • the figures 11 and 12 represent solutions that are differentiated by the thickness of the ceramic reinforcement 5 considered, given the importance of the demands encountered in service.
  • Certain wavy shapes of the inserts in the shape of an "S", for example, illustrated in FIGS. Figures 8a and 8b , Create grooves of the same shape between the inserts during wear and soften the shock generated by the groove through the progressiveness of the meeting thereof with the bed of material to be grind. This reduces the risk of vibrations.
  • the examples of shapes given in the present description are not limiting; other geometric shapes can of course be imagined and are part of the present invention.
  • the three types of inserts 2 are represented in Figures 10, 11 and 12 .
  • the inserts are cast in a type of cast iron of 3% by weight of carbon and 16% by weight of chromium (U19) and then integrated (embedded) in a grinding roller whose metal matrix consists of a spheroidal graphite cast iron. type GGG40.
  • the crushed material is a cement raw material.
  • the inserts 2 comprise infiltratable ceramic reinforcements 5 of the alumina-zirconia type.
  • the diameter of the rollers is 2000 mm in the 3 cases.
  • the number of hours of service represents the service life of the rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crushing And Grinding (AREA)
  • Ceramic Products (AREA)
  • Crushing And Pulverization Processes (AREA)
EP15716795.8A 2014-04-23 2015-04-16 Galet de broyage comportant des inserts a massivite elevee Not-in-force EP3134212B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15716795T PL3134212T3 (pl) 2014-04-23 2015-04-16 Walec kruszarki zawierający wkładki o wysokiej masywności

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2014/0287A BE1021839B1 (fr) 2014-04-23 2014-04-23 Galet de broyage comportant des inserts a massivite elevee
PCT/EP2015/058222 WO2015162047A1 (fr) 2014-04-23 2015-04-16 Galet de broyage comportant des inserts a massivite elevee

Publications (2)

Publication Number Publication Date
EP3134212A1 EP3134212A1 (fr) 2017-03-01
EP3134212B1 true EP3134212B1 (fr) 2018-06-06

Family

ID=51133724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15716795.8A Not-in-force EP3134212B1 (fr) 2014-04-23 2015-04-16 Galet de broyage comportant des inserts a massivite elevee

Country Status (18)

Country Link
US (1) US20170043349A1 (ru)
EP (1) EP3134212B1 (ru)
JP (1) JP2017513695A (ru)
KR (1) KR20160145594A (ru)
CN (1) CN106413900B (ru)
AU (1) AU2015250957B2 (ru)
BE (1) BE1021839B1 (ru)
BR (1) BR112016022484A2 (ru)
CA (1) CA2945061A1 (ru)
CL (1) CL2016002594A1 (ru)
DK (1) DK3134212T3 (ru)
ES (1) ES2680675T3 (ru)
MX (1) MX2016013902A (ru)
PL (1) PL3134212T3 (ru)
PT (1) PT3134212T (ru)
RU (1) RU2673191C2 (ru)
WO (1) WO2015162047A1 (ru)
ZA (1) ZA201606497B (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084259B (zh) * 2014-08-01 2017-02-22 张珂 一种辊子及其辊压装置
DE102015207922A1 (de) * 2015-04-29 2016-11-03 Takraf Gmbh Hartkörper als Rasterpanzerung für eine Rollenpresse, Verfahren zur dessen Herstellung, und Rolle für eine Rollenpresse
DE102016200912A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
EP3308861A1 (fr) * 2016-10-12 2018-04-18 Magotteaux International S.A. Galet de broyage
CN107138712B (zh) * 2017-05-31 2023-07-14 南通高欣耐磨科技股份有限公司 一种zgm型可修复金属陶瓷复合磨辊及制造方法
BE1027444B1 (fr) 2020-02-11 2021-02-10 Magotteaux Int Piece d'usure composite

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377370A (en) * 1920-01-10 1921-05-10 William G Stevenson Rock-crusher roll
DE2643307A1 (de) * 1976-09-25 1978-03-30 Willy Rueschhoff Gmbh & Co Kg Walzenmantel fuer mahlwalzen von walzenschuesselmuehlen
JPS62244449A (ja) * 1986-04-15 1987-10-24 三菱重工業株式会社 粉砕機
SU1426633A1 (ru) * 1986-05-26 1988-09-30 Государственный Всесоюзный Научно-Исследовательский Институт Цементной Промышленности Валок дробилки
BE1004573A4 (fr) * 1990-09-20 1992-12-15 Magotteaux Int Procede de fabrication d'une piece de fonderie bimetallique et piece d'usure realisee par ce procede.
US5238046A (en) * 1990-09-20 1993-08-24 Magotteaux International Method of manufacturing a bimetal casting and wearing part produced by this method
JP2863768B2 (ja) * 1993-06-08 1999-03-03 アイエヌジ商事株式会社 粉砕機に使用される破砕面部材
LU90006B1 (fr) * 1997-01-15 1997-08-21 Magotteaux Int Insert pour pièces d'usure composites procédé de fabrication d'une pièce d'usure à l'aide de tels inserts et pièce d'usure ainsi réalisée
DE10354679A1 (de) * 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
EP1570905A1 (fr) * 2004-03-03 2005-09-07 Magotteaux International S.A. Galets de broyage pour broyeur vertical
DE102009050636B4 (de) * 2009-10-24 2011-07-07 Siempelkamp Giesserei GmbH, 47803 Mahlwalze und Ringbandage für eine Mahlwalze
JP2012035157A (ja) * 2010-08-04 2012-02-23 Ube Techno Enji Kk 粉砕ローラ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
BR112016022484A2 (pt) 2017-08-15
RU2673191C2 (ru) 2018-11-22
RU2016142139A (ru) 2018-05-23
JP2017513695A (ja) 2017-06-01
DK3134212T3 (en) 2018-09-10
PL3134212T3 (pl) 2019-02-28
PT3134212T (pt) 2018-07-30
ES2680675T3 (es) 2018-09-10
CL2016002594A1 (es) 2017-02-24
AU2015250957A1 (en) 2016-10-06
CN106413900A (zh) 2017-02-15
CA2945061A1 (en) 2015-10-29
KR20160145594A (ko) 2016-12-20
WO2015162047A1 (fr) 2015-10-29
MX2016013902A (es) 2017-01-11
ZA201606497B (en) 2018-05-30
RU2016142139A3 (ru) 2018-08-02
CN106413900B (zh) 2018-09-28
BE1021839B1 (fr) 2016-01-21
EP3134212A1 (fr) 2017-03-01
US20170043349A1 (en) 2017-02-16
AU2015250957B2 (en) 2018-12-13

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