EP3308861A1 - Galet de broyage - Google Patents
Galet de broyage Download PDFInfo
- 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- Withdrawn
Links
Images
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)
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)
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)
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)
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 |
-
2016
- 2016-10-12 EP EP16193517.6A patent/EP3308861A1/fr not_active Withdrawn
-
2017
- 2017-09-20 CN CN201780058615.1A patent/CN109843442B/zh active Active
- 2017-09-20 KR KR1020197010265A patent/KR20190065283A/ko not_active Application Discontinuation
- 2017-09-20 PT PT177688108T patent/PT3525934T/pt unknown
- 2017-09-20 ES ES17768810T patent/ES2965916T3/es active Active
- 2017-09-20 JP JP2019516500A patent/JP6931387B2/ja active Active
- 2017-09-20 WO PCT/EP2017/073701 patent/WO2018069006A1/fr unknown
- 2017-09-20 CA CA3036461A patent/CA3036461A1/en active Pending
- 2017-09-20 PL PL17768810.8T patent/PL3525934T3/pl unknown
- 2017-09-20 DK DK17768810.8T patent/DK3525934T3/da active
- 2017-09-20 US US16/341,375 patent/US11123742B2/en active Active
- 2017-09-20 RU RU2019113884A patent/RU2730026C1/ru active
- 2017-09-20 AU AU2017342978A patent/AU2017342978B2/en active Active
- 2017-09-20 MX MX2019004261A patent/MX2019004261A/es unknown
- 2017-09-20 EP EP17768810.8A patent/EP3525934B1/fr active Active
-
2019
- 2019-03-26 CL CL2019000786A patent/CL2019000786A1/es unknown
- 2019-03-26 ZA ZA2019/01867A patent/ZA201901867B/en unknown
Patent Citations (7)
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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Effective date: 20181019 |