EP3308861A1 - Galet de broyage - Google Patents

Galet de broyage Download PDF

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Publication number
EP3308861A1
EP3308861A1 EP16193517.6A EP16193517A EP3308861A1 EP 3308861 A1 EP3308861 A1 EP 3308861A1 EP 16193517 A EP16193517 A EP 16193517A EP 3308861 A1 EP3308861 A1 EP 3308861A1
Authority
EP
European Patent Office
Prior art keywords
roller
zone
wear
inserts
stress
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Withdrawn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
EP16193517.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Xavier Prignon
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 EP16193517.6A priority Critical patent/EP3308861A1/fr
Priority to ES17768810T priority patent/ES2965916T3/es
Priority to BR112019006614-4A priority patent/BR112019006614B1/pt
Priority to CN201780058615.1A priority patent/CN109843442B/zh
Priority to US16/341,375 priority patent/US11123742B2/en
Priority to KR1020197010265A priority patent/KR20190065283A/ko
Priority to PCT/EP2017/073701 priority patent/WO2018069006A1/fr
Priority to AU2017342978A priority patent/AU2017342978B2/en
Priority to RU2019113884A priority patent/RU2730026C1/ru
Priority to EP17768810.8A priority patent/EP3525934B1/fr
Priority to DK17768810.8T priority patent/DK3525934T3/da
Priority to JP2019516500A priority patent/JP6931387B2/ja
Priority to PT177688108T priority patent/PT3525934T/pt
Priority to CA3036461A priority patent/CA3036461A1/en
Priority to PL17768810.8T priority patent/PL3525934T3/pl
Priority to MX2019004261A priority patent/MX2019004261A/es
Publication of EP3308861A1 publication Critical patent/EP3308861A1/fr
Priority to ZA2019/01867A priority patent/ZA201901867B/en
Priority to CL2019000786A priority patent/CL2019000786A1/es
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention relates to a grinding roller for vertical axis mills used for grinding materials such as rocks, coal, cement clinker or any other related material such as slag.
  • These rollers are particularly wear-resistant thanks to specially shaped reinforcing inserts placed near the working surfaces of the roller, allowing uniform and constant wear over the entire work surface and thus longer service life.
  • EP 1570905A1 discloses a grinding roller comprising a plurality of peripheral inserts made of a material with high wear resistance and high hardness, mechanically sealed in a cast matrix of ductile material with first zones subjected to a high wear stress and second zones subject to low wear stress.
  • the roller presents on its peripheral face inserts comprising a contiguous part, and in the second zone, a non-contiguous part.
  • WO 9605005 discloses a bimetallic casting part mounted on the hub of a vertical axis milling roller. It comprises a core made of a ductile iron provided with mechanical connection elements in the form of studs which are made integral by casting a casing, made of a non-ductile wear material with a high chromium content.
  • the present invention provides a roller reinforced by inserts whose profile has a particular design that results in constant wear of the entire working surface of the roller avoiding local occasional wear. These rollers allow to maintain the performance of the mill to a satisfactory level while minimizing the risks of breakage and reducing manufacturing costs.
  • Compression stresses and relative velocities between the rollers and the table vary over the width (thickness) of the roller.
  • the level of compressive stress depends on the height of the bed of material and the spacing between the rollers and the table over the width of the roller.
  • the level of wear is not constant over the width of the roller. Over time, more marked wear zones are formed along the generatrix of the rollers, which cause a drop in grinding efficiency and ultimately require the rollers to be replaced.
  • the intensity of wear on a roller of a vertical axis mill depends mainly on the abrasiveness of the material, the pressure applied locally and the relative speed between the surface of the roller and the material to be ground. As the mill rotates, the material accumulates outside the turntable, resulting in a much greater wear stress on the outer portion of the working surface of the milling wheel (see FIG. figure 3 ). This is the reason why this part must be particularly reinforced by inserts.
  • the invention discloses grinding rollers whose metal matrix is a relatively ductile material such as a GS cast iron or a mild steel. These rollers are provided with a plurality of high-wear inserts distributed over the entire periphery near the working surface of the roller (see figure 2 ).
  • the originality of the grinding roller according to the present invention lies in the design of the inserts which are profiled in such a way that part of them is in the immediate vicinity, or even flush with the work surface (in the state nine of the roller) at places of high stress, and another part set back from the working surface (in new condition of the roller) in areas of least stress.
  • This original distribution of reinforcement makes it possible to ensure more constant wear over the entire width of the working surface of the grinding roller.
  • the distance between the portion of the insert near the work surface and the working surface itself in the high stress area (Z1) is defined by d1.
  • the distance between the portion of the insert set back from the working surface and the working surface itself in the zone of low stress (Z2) is defined by d2, the distance d1 in the zone of strong stress (Z1) being always less than d2 in the zone of low stress (Z2).
  • d1 d2.
  • d1 0 or is close to zero.
  • the concept "flush with the work surface” must however be relativized knowing that the size of grinding rollers whose diameter is sometimes close to three meters for a mass of 15 tons.
  • the distance d1 is generally less than 10 mm, preferably 8 mm or even 5 mm or less depending on the practical conditions of the casting.
  • the inserts will often have a transition zone (Z3) joining the portions nearby and those set back from the work surface. These portions correspond to a zone (Z3) where the outer surface of the insert progressively moves away from the working surface of the roller in new condition.
  • the ductile material filling the volume between the outer surface of the inserts and the original surface of the roller thus has a variable thickness on the thickness of the roller.
  • transition zone Z3 The presence of a transition zone Z3 is not always necessary, however, and in some cases, the zone of high wear stress Z1 can pass without transition to a zone of low wear stress Z2 (see FIG. figure 7 ).
  • the roller will thus have two zones on its working width, the zone 1 (Z1) being subjected to a strong stress where the outer surface of the insert will be closest to or flush with the surface of the work (original profile) of the roller, the zone 2 (Z2) being subjected to a low stress where the outer surface of the insert will be furthest away and set back from the work surface (original profile) of the roller (peripheral surface).
  • the rollers will often have a transition zone 3 (Z 3) corresponding to an average stress intensity where the distances d 1 and d 2 meet.
  • the distances d1 and d2 are not necessarily totally constant but may vary slightly according to the difficulties encountered in placing the inserts in the molds during the preparation of the casting.
  • the invention aims to accelerate the wear in the zones 2 and possibly 3, which has the consequence that the wear gradient between the zone 1 and the rest of the
  • the thickness of the roller is lower.
  • the rollers can thus keep a profile closer to the original profile and therefore have a longer life.
  • the observed increase in life is between 10 and 80%, preferably between 30 and 70%. The most significant improvements have been observed on frusto-conical models.
  • the grinding rollers which have an axial symmetry with a generator of revolution giving rise to a roller of type "cylinder” or “tire” (see figure 4 ) can be used on both external peripheral faces and can be turned over (for example, rollers for RM grinders).
  • the inserts may contain ceramic grains (oxides, carbides, nitrides or metal borides, intermetallic compounds) in order to improve their resistance to wear.
  • these grains will be arranged in the part of the insert which is closest to the peripheral (original) surface of the roller in zone Z1.
  • the arrangement of the ceramic grains is preferably in the form of infiltrable slab by melting of the casting. The slabs are preformed to a desired section and placed in the mold before casting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP16193517.6A 2016-10-12 2016-10-12 Galet de broyage Withdrawn EP3308861A1 (fr)

Priority Applications (18)

Application Number Priority Date Filing Date Title
EP16193517.6A EP3308861A1 (fr) 2016-10-12 2016-10-12 Galet de broyage
EP17768810.8A EP3525934B1 (fr) 2016-10-12 2017-09-20 Galet de broyage
DK17768810.8T DK3525934T3 (da) 2016-10-12 2017-09-20 Formalingsvalse
CN201780058615.1A CN109843442B (zh) 2016-10-12 2017-09-20 磨辊
US16/341,375 US11123742B2 (en) 2016-10-12 2017-09-20 Grinding roller
KR1020197010265A KR20190065283A (ko) 2016-10-12 2017-09-20 분쇄 롤러
PCT/EP2017/073701 WO2018069006A1 (fr) 2016-10-12 2017-09-20 Galet de broyage
AU2017342978A AU2017342978B2 (en) 2016-10-12 2017-09-20 Grinding roller
RU2019113884A RU2730026C1 (ru) 2016-10-12 2017-09-20 Измельчающий валок
ES17768810T ES2965916T3 (es) 2016-10-12 2017-09-20 Rodillo triturador
BR112019006614-4A BR112019006614B1 (pt) 2016-10-12 2017-09-20 Rolo de britagem
JP2019516500A JP6931387B2 (ja) 2016-10-12 2017-09-20 粉砕ローラー
PT177688108T PT3525934T (pt) 2016-10-12 2017-09-20 Rolete de trituração
CA3036461A CA3036461A1 (en) 2016-10-12 2017-09-20 Grinding roller
PL17768810.8T PL3525934T3 (pl) 2016-10-12 2017-09-20 Rolka krusząca
MX2019004261A MX2019004261A (es) 2016-10-12 2017-09-20 Rodillo de molienda.
ZA2019/01867A ZA201901867B (en) 2016-10-12 2019-03-26 Grinding roller
CL2019000786A CL2019000786A1 (es) 2016-10-12 2019-03-26 Rodillo de molienda.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16193517.6A EP3308861A1 (fr) 2016-10-12 2016-10-12 Galet de broyage

Publications (1)

Publication Number Publication Date
EP3308861A1 true EP3308861A1 (fr) 2018-04-18

Family

ID=57130280

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16193517.6A Withdrawn EP3308861A1 (fr) 2016-10-12 2016-10-12 Galet de broyage
EP17768810.8A Active EP3525934B1 (fr) 2016-10-12 2017-09-20 Galet de broyage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17768810.8A Active EP3525934B1 (fr) 2016-10-12 2017-09-20 Galet de broyage

Country Status (16)

Country Link
US (1) US11123742B2 (pl)
EP (2) EP3308861A1 (pl)
JP (1) JP6931387B2 (pl)
KR (1) KR20190065283A (pl)
CN (1) CN109843442B (pl)
AU (1) AU2017342978B2 (pl)
CA (1) CA3036461A1 (pl)
CL (1) CL2019000786A1 (pl)
DK (1) DK3525934T3 (pl)
ES (1) ES2965916T3 (pl)
MX (1) MX2019004261A (pl)
PL (1) PL3525934T3 (pl)
PT (1) PT3525934T (pl)
RU (1) RU2730026C1 (pl)
WO (1) WO2018069006A1 (pl)
ZA (1) ZA201901867B (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1027444B1 (fr) 2020-02-11 2021-02-10 Magotteaux Int Piece d'usure composite
JP2024067390A (ja) * 2022-11-04 2024-05-17 三菱重工業株式会社 粉砕ローラ、粉砕テーブル及び固体燃料粉砕装置並びに粉砕ローラの製造方法
JP2024067391A (ja) * 2022-11-04 2024-05-17 三菱重工業株式会社 粉砕ローラ、粉砕テーブル及び固体燃料粉砕装置並びに粉砕ローラの製造方法
EP4450164A1 (fr) 2023-04-19 2024-10-23 Magotteaux International S.A. Galet de broyage composite monobloc

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606506A (en) * 1984-05-04 1986-08-19 Kawasaki Jukogyo Kabushiki Kaisha Vertical type roller mill
WO1996005005A1 (fr) 1994-08-17 1996-02-22 Magotteaux International S.A. Piece de fonderie bimetallique servant de piece d'usure dans les broyeurs verticaux, son procece de fabrication et utilisation dans les broyeurs verticaux
EP1570905A1 (fr) 2004-03-03 2005-09-07 Magotteaux International S.A. Galets de broyage pour broyeur vertical
JP2012035157A (ja) * 2010-08-04 2012-02-23 Ube Techno Enji Kk 粉砕ローラ
WO2015015507A1 (en) * 2013-07-30 2015-02-05 Balaji Industrial Products Ltd., A grinding roller for vertical roller mill and method of manufacturing the same
CN104549654A (zh) * 2015-01-12 2015-04-29 溧阳中材重型机器有限公司 立磨磨辊辊套与磨盘衬板之间的耐磨装置
WO2015162047A1 (fr) 2014-04-23 2015-10-29 Magotteaux International S.A. Galet de broyage comportant des inserts a massivite elevee

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579289A (en) * 1983-11-07 1986-04-01 Eschweiler Bergwerks-Verein Aktiengesellschaft Skew roller for a planetary type skew rolling mill
JPS63143949A (ja) * 1986-12-09 1988-06-16 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
US5238046A (en) * 1990-09-20 1993-08-24 Magotteaux International Method of manufacturing a bimetal casting and wearing part produced by this method
US6399176B1 (en) * 1996-10-01 2002-06-04 Magotteaux International S.A. Composite wear component
JP2003225578A (ja) * 2002-02-01 2003-08-12 E & A:Kk 粉砕装置の破砕歯
JP3807734B2 (ja) * 2002-08-09 2006-08-09 アイエヌジ商事株式会社 破砕面部材
JP2009183877A (ja) * 2008-02-06 2009-08-20 Ube Techno Enji Kk 竪型粉砕機の粉砕ローラ
BR112014004384A2 (pt) * 2011-09-09 2017-03-28 Bühler AG cilindro
US9566662B2 (en) * 2013-04-11 2017-02-14 Fujico Co., Ltd. Method for manufacturing mill roll, mill roll and manufacturing apparatus of mill roll
CN205020152U (zh) * 2015-09-10 2016-02-10 中材（天津）粉体技术装备有限公司 立式辊磨磨辊和立式辊磨

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606506A (en) * 1984-05-04 1986-08-19 Kawasaki Jukogyo Kabushiki Kaisha Vertical type roller mill
WO1996005005A1 (fr) 1994-08-17 1996-02-22 Magotteaux International S.A. Piece de fonderie bimetallique servant de piece d'usure dans les broyeurs verticaux, son procece de fabrication et utilisation dans les broyeurs verticaux
EP1570905A1 (fr) 2004-03-03 2005-09-07 Magotteaux International S.A. Galets de broyage pour broyeur vertical
JP2012035157A (ja) * 2010-08-04 2012-02-23 Ube Techno Enji Kk 粉砕ローラ
WO2015015507A1 (en) * 2013-07-30 2015-02-05 Balaji Industrial Products Ltd., A grinding roller for vertical roller mill and method of manufacturing the same
WO2015162047A1 (fr) 2014-04-23 2015-10-29 Magotteaux International S.A. Galet de broyage comportant des inserts a massivite elevee
CN104549654A (zh) * 2015-01-12 2015-04-29 溧阳中材重型机器有限公司 立磨磨辊辊套与磨盘衬板之间的耐磨装置

Also Published As

Publication number Publication date
CN109843442B (zh) 2021-10-15
MX2019004261A (es) 2019-06-12
DK3525934T3 (da) 2024-01-29
EP3525934B1 (fr) 2023-10-25
RU2730026C1 (ru) 2020-08-14
PL3525934T3 (pl) 2024-04-08
CN109843442A (zh) 2019-06-04
WO2018069006A1 (fr) 2018-04-19
AU2017342978A1 (en) 2019-04-18
CL2019000786A1 (es) 2019-07-26
JP6931387B2 (ja) 2021-09-01
PT3525934T (pt) 2023-12-18
ZA201901867B (en) 2020-09-30
US11123742B2 (en) 2021-09-21
EP3525934A1 (fr) 2019-08-21
US20200055055A1 (en) 2020-02-20
CA3036461A1 (en) 2018-04-19
ES2965916T3 (es) 2024-04-17
KR20190065283A (ko) 2019-06-11
AU2017342978B2 (en) 2022-09-15
JP2019531888A (ja) 2019-11-07
BR112019006614A2 (pt) 2019-07-02

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