EP1570905A1 - Mahlwerkzeug für Walzenmühle - Google Patents

Mahlwerkzeug für Walzenmühle Download PDF

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Publication number
EP1570905A1
EP1570905A1 EP04447053A EP04447053A EP1570905A1 EP 1570905 A1 EP1570905 A1 EP 1570905A1 EP 04447053 A EP04447053 A EP 04447053A EP 04447053 A EP04447053 A EP 04447053A EP 1570905 A1 EP1570905 A1 EP 1570905A1
Authority
EP
European Patent Office
Prior art keywords
inserts
roller
wear
contiguous
faces
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Withdrawn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
EP04447053A
Other languages
English (en)
French (fr)
Inventor
Léon Leclercq
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 EP04447053A priority Critical patent/EP1570905A1/de
Priority to EP04802155A priority patent/EP1725336A1/de
Priority to US10/591,030 priority patent/US7438247B2/en
Priority to PCT/BE2004/000179 priority patent/WO2005084809A1/fr
Priority to CA002557664A priority patent/CA2557664A1/en
Priority to RU2006132319/03A priority patent/RU2357801C2/ru
Priority to BRPI0418584-6A priority patent/BRPI0418584A/pt
Priority to KR1020067017877A priority patent/KR20060125886A/ko
Priority to CNB2004800422544A priority patent/CN100425348C/zh
Priority to JP2007501070A priority patent/JP4746029B2/ja
Publication of EP1570905A1 publication Critical patent/EP1570905A1/de
Priority to ZA200606924A priority patent/ZA200606924B/en
Priority to MA29293A priority patent/MA28371A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B02C4/02—Crushing or disintegrating by roller mills with two or more 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
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • B02C4/34—Adjusting, applying pressure to, or controlling the distance between, milling members in mills wherein a roller co-operates with a stationary member
    • 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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/22—Nonparticulate element embedded or inlaid in substrate and visible

Definitions

  • the present invention aims to provide improvements to grinding rollers for grinders in general and in particular for so-called axis mills vertical.
  • the so-called vertical axis mills are used for example to grind coal or clinker. They are essentially consisting of a rotating track supporting pebbles which are driven by the rotary movement of the track along the vertical axis. The material to be grinded is introduced into a central feeding channel and falls on the track, where it is crushed and crushed between the track and the pebble. The crushed material is then removed to the periphery of the track.
  • pebble shapes such as frustoconical rollers or rollers.
  • This patent describes among other things a configuration particular grinding rollers whose characteristic is that the wear surface is essentially constituted by peripheral inserts made of very hard material at high wear resistance (such as high-grade fonts) chromium), mechanically sealed in a matrix of material ductile.
  • the inserts are obtained at with a protruding rib on at least one flank longitudinal and are then placed against each other others in a mold leaving, between them, a space defined by the thickness of their ribs.
  • the roller as a bi-metallic piece by a Casting technique by casting a more ductile material which ensures a mechanical connection of the inserts in the mass remaining roller formed by the ductile material.
  • peripheral inserts being thus spaced the one against the other by ribs, the material ductile, during the manufacture of the roller by molding, can infiltrate between the inserts up to the wear surface the device itself, thus guaranteeing a good fixation of the inserts in the room.
  • This provision leads to a succession of hard inserts basically separated by spacing in more ductile material (except spacing ribs).
  • the inserts contain, according to a recent development of the technique, an internal reinforcement of ceramic materials to reduce wear, the presence of a unprotected space between the inserts does that in service, a groove is hollowed between the inserts thus giving off ceramic reinforcement and causing a chipping of the edges of this one.
  • This phenomenon greatly reduces the effectiveness of the ceramic reinforcement because it becomes a producer of very abrasive materials, in addition to the fact that its potential wear resistance decreases with its size.
  • the inserts do not extend into their longitudinal direction along the entire length of the generator so as to leave on the edge outside the pebbles, a peripheral nose forming part of ductile iron support, constituting the rest of the roller.
  • the purpose of the present invention is to provide a new form of inserts so as to avoid disadvantages of the solutions of the state of the art.
  • the present invention discloses a roller of grinding comprising several peripheral inserts in material with high wear resistance and high hardness, mechanically sealed in a cast material matrix ductile, said roller having first zones subjected to high stress to wear as well as second areas subject to low wear stress characterized in that in said first zone said roller presents on its peripheral face inserts comprising a contiguous part and in said second zone, a part non-contiguous, the spacing in said non-joined part being filled with said ductile material of the cast matrix allowing a sufficient mechanical attachment of the inserts.
  • the contiguous faces coming into contact with their neighbors in successive inserts have a line of contact corresponding to the radii of the circle formed by the roller.
  • the report the length of the faces contiguous to the length of the zones where the faces are not contiguous is equal to or greater than 0.2.
  • the invention specifies that the ratio between the length of the areas where the faces are joined to the length of the zones where the faces are joined is between 0.2 and 20.
  • the wear resistance of the inserts, especially in joined parts is accentuated by a ceramic reinforcement selected from the group of oxides, carbides, nitrides or borides.
  • said insert comprises at least one undercut allowing its sealing in said cast matrix of ductile material.
  • Figure 1 schematically shows a crusher says to vertical axis.
  • Figure 2 shows the grinding mechanism taking place between the track and the wheel 1 with zones to higher wear 2 and 4 and lower wear 3. It shows also the wear that can occur on the track.
  • Figure 3 schematically represents perspective a roller according to the state of the art for which shows a number of spaced inserts extending longitudinally over the total length of the generator of the roller.
  • FIG. 4 represents the insert according to the state of the technique revealing the spacing ribs 20 which have not been shown in Figure 3.
  • Figure 5 shows an example of profiles of wear observed on two types of rollers a and b following the state of the art.
  • Figure 6 illustrates the formation of grooves 16 in the inserts according to the state of the art
  • Figure 7 illustrates the flaking of the edge of ceramic reinforcements 17 and 18 inserts resulting from the forming grooves illustrated in Figure 6.
  • Figure 8 is a view of a set of inserts juxtaposed according to the invention.
  • FIG. 9 is a sectional view of an insert in zone 14, according to FIG.
  • Figure 10 is a plan view of the partially contiguous arrangement of three inserts according to the invention.
  • FIG. 11 is a sectional view of an insert according to Figure 10.
  • Figures 10 and 11 respectively correspond to in Figures 8 and 9 for the case where the inserts contain a ceramic reinforcement (illustrated by dotted lines).
  • the wear profile 4 as shown in Figure 5, varying for example between one or two areas of high wear 2 and 4 and a zone with less wear 3.
  • inserts 5 in particular in their outer part 14, it can be provided reinforcement by infiltration of a porous ceramic core: oxides, carbides, nitrides, borides or others as described for example in the patent EP 0 930 948 B1 or by creating a structure ceramic in situ.
  • a porous ceramic core oxides, carbides, nitrides, borides or others as described for example in the patent EP 0 930 948 B1 or by creating a structure ceramic in situ.
  • Figure 6 shows the formation of grooves 16 following the old design, with inserts 5 without ceramic reinforcement.
  • Figure 7 shows what happens in service when a ceramic reinforcement 18 has been incorporated into the inserts 5. It is found that after the formation of grooves 16 in the ductile metal, the ridges 17 of the mass of infiltrated ceramic 18 break, releasing material very abrasive and accelerates the formation of the wear profile irregular.
  • the inserts are designed according to the invention so as to create a differential wear resistance between the parts to heavy wear 2 and 4 and parts with less wear 3.
  • this effect is obtained by the use of inserts 5 (see FIG. 8 and following) which are joined in the high-wear part 2 mentioned above and which retain spacings 12 in the part with less wear stress 3 that are filled by a ductile cast metal 19.
  • a zone 14 is thus obtained.
  • the faces 6 and 7 coming into contact with their neighbors in successive inserts are drawn on the center of the roller, that is to say that cut, their contact line corresponds to the spokes of the circle formed by the pebble.
  • the relative position of the area or areas with strong wear compared to the position of one of the low areas wear will depend on the type of grinder and type of roller and, more particularly its geometric form.
  • the ratio of the width of the zone (s) heavily loaded with wear to the width of the areas with low wear stress is generally equal to or greater than unity. Relationships between respective widths of these same areas from 1 to 1.5 allow both to have a grinding surface adequate and suitable interlocking of the inserts in the matrix.
  • the fact that the inner part 3 of the insert retains the possibility of groove formation is in itself beneficial in that it thus makes it possible to better training of the roller by reducing the effect of slipping or skidding on the material to be ground.
  • This form is chosen to allow a strong against draft of the dovetail type, hole or other means of attachment.
  • Figures 10 and 11 show the continuity according to the invention of ceramic reinforcements 18 in the part 14 of the wear surface of the inserts constituted of the two parts 13 and 14, which eliminates the edges fragile and, consequently, the loss of material intended to resist wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP04447053A 2004-03-03 2004-03-03 Mahlwerkzeug für Walzenmühle Withdrawn EP1570905A1 (de)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP04447053A EP1570905A1 (de) 2004-03-03 2004-03-03 Mahlwerkzeug für Walzenmühle
RU2006132319/03A RU2357801C2 (ru) 2004-03-03 2004-12-20 Измельчающие валки для вертикальной дробилки
US10/591,030 US7438247B2 (en) 2004-03-03 2004-12-20 Grinding rollers for a vertical crusher
PCT/BE2004/000179 WO2005084809A1 (fr) 2004-03-03 2004-12-20 Galets de broyage pour broyeur vertical
CA002557664A CA2557664A1 (en) 2004-03-03 2004-12-20 Milling rollers for vertical miller
EP04802155A EP1725336A1 (de) 2004-03-03 2004-12-20 Mahlwalzen für vertikale mühle
BRPI0418584-6A BRPI0418584A (pt) 2004-03-03 2004-12-20 rolo de moagem composto
KR1020067017877A KR20060125886A (ko) 2004-03-03 2004-12-20 수직 분쇄기용 분쇄 롤러
CNB2004800422544A CN100425348C (zh) 2004-03-03 2004-12-20 用于垂直粉碎机的粉碎滚轮
JP2007501070A JP4746029B2 (ja) 2004-03-03 2004-12-20 竪型粉砕機のための粉砕ローラ
ZA200606924A ZA200606924B (en) 2004-03-03 2006-08-18 Milling rollers for vertical miller
MA29293A MA28371A1 (fr) 2004-03-03 2006-08-29 Galets de broyage pour broyeur vertical

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04447053A EP1570905A1 (de) 2004-03-03 2004-03-03 Mahlwerkzeug für Walzenmühle

Publications (1)

Publication Number Publication Date
EP1570905A1 true EP1570905A1 (de) 2005-09-07

Family

ID=34746238

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04447053A Withdrawn EP1570905A1 (de) 2004-03-03 2004-03-03 Mahlwerkzeug für Walzenmühle
EP04802155A Withdrawn EP1725336A1 (de) 2004-03-03 2004-12-20 Mahlwalzen für vertikale mühle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04802155A Withdrawn EP1725336A1 (de) 2004-03-03 2004-12-20 Mahlwalzen für vertikale mühle

Country Status (11)

Country Link
US (1) US7438247B2 (de)
EP (2) EP1570905A1 (de)
JP (1) JP4746029B2 (de)
KR (1) KR20060125886A (de)
CN (1) CN100425348C (de)
BR (1) BRPI0418584A (de)
CA (1) CA2557664A1 (de)
MA (1) MA28371A1 (de)
RU (1) RU2357801C2 (de)
WO (1) WO2005084809A1 (de)
ZA (1) ZA200606924B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3308861A1 (de) 2016-10-12 2018-04-18 Magotteaux International S.A. Zerkleinerungsrolle
RU2673191C2 (ru) * 2014-04-23 2018-11-22 Маготто Интернасьональ С.А. Измельчающий ролик, содержащий вставки повышенной массивности
US11534822B2 (en) 2020-02-11 2022-12-27 Magotteaux International S.A. Composite wear part

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7641135B1 (en) * 2006-02-28 2010-01-05 Emily Lo Combinative cutting wheel of a rotary cutter of paper shredder
JP2009183877A (ja) * 2008-02-06 2009-08-20 Ube Techno Enji Kk 竪型粉砕機の粉砕ローラ
JP2012035157A (ja) * 2010-08-04 2012-02-23 Ube Techno Enji Kk 粉砕ローラ
CN102773129A (zh) * 2011-05-10 2012-11-14 北京能为科技发展有限公司 耐磨分体辊套
DE102011104854B4 (de) * 2011-06-21 2015-06-11 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern
DE102012102199A1 (de) * 2012-03-15 2013-09-19 Maschinenfabrik Köppern GmbH & Co KG Presswalze
JP5791556B2 (ja) * 2012-03-26 2015-10-07 三菱日立パワーシステムズ株式会社 竪型粉砕装置
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
WO2015123770A1 (en) * 2014-02-19 2015-08-27 Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. Segmented roller and method of reconditioning same
WO2015123772A1 (en) * 2014-02-19 2015-08-27 Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. Roller with replaceable edge reinforcements
CN104084259B (zh) * 2014-08-01 2017-02-22 张珂 一种辊子及其辊压装置
DE102016200912A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
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
EP4450164A1 (de) 2023-04-19 2024-10-23 Magotteaux International S.A. Einteilige verbundschleifrolle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000392A (en) * 1989-05-10 1991-03-19 Krupp Polysius Ag Grinding roller
US5328776A (en) * 1993-01-04 1994-07-12 Michail Garber Abrasion and impact resistant composite castings and wear resistant surface provided therewith
DE4400797A1 (de) * 1994-01-13 1995-07-20 Krupp Polysius Ag Mahlwerkzeug für Walzenmühlen
JP2001129418A (ja) * 1999-11-01 2001-05-15 Nisshin Flour Milling Co Ltd 機械式粉砕機

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Publication number Priority date Publication date Assignee Title
JPS6198548U (de) * 1984-12-04 1986-06-24
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.
JPH0647299A (ja) * 1992-07-31 1994-02-22 Kobe Steel Ltd 衝撃式破砕機
US5755033A (en) * 1993-07-20 1998-05-26 Maschinenfabrik Koppern Gmbh & Co. Kg Method of making a crushing roll
JP3155149B2 (ja) * 1994-05-31 2001-04-09 株式会社神戸製鋼所 ジョークラッシャ用の固定ジョープレート
DE69702988T2 (de) 1996-10-01 2001-03-01 Hubert Francois Verschleissfester verbundkörper
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
CN2577951Y (zh) * 2002-09-25 2003-10-08 张店钢铁总厂 组合式破碎辊

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000392A (en) * 1989-05-10 1991-03-19 Krupp Polysius Ag Grinding roller
US5328776A (en) * 1993-01-04 1994-07-12 Michail Garber Abrasion and impact resistant composite castings and wear resistant surface provided therewith
DE4400797A1 (de) * 1994-01-13 1995-07-20 Krupp Polysius Ag Mahlwerkzeug für Walzenmühlen
JP2001129418A (ja) * 1999-11-01 2001-05-15 Nisshin Flour Milling Co Ltd 機械式粉砕機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 22 9 March 2001 (2001-03-09) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2673191C2 (ru) * 2014-04-23 2018-11-22 Маготто Интернасьональ С.А. Измельчающий ролик, содержащий вставки повышенной массивности
EP3308861A1 (de) 2016-10-12 2018-04-18 Magotteaux International S.A. Zerkleinerungsrolle
WO2018069006A1 (fr) 2016-10-12 2018-04-19 Magotteaux International S.A. Galet de broyage
US11123742B2 (en) 2016-10-12 2021-09-21 Magotteaux International S.A. Grinding roller
US11534822B2 (en) 2020-02-11 2022-12-27 Magotteaux International S.A. Composite wear part

Also Published As

Publication number Publication date
CN1925920A (zh) 2007-03-07
EP1725336A1 (de) 2006-11-29
MA28371A1 (fr) 2006-12-01
RU2357801C2 (ru) 2009-06-10
US20070184235A1 (en) 2007-08-09
CN100425348C (zh) 2008-10-15
JP2007526118A (ja) 2007-09-13
WO2005084809A1 (fr) 2005-09-15
US7438247B2 (en) 2008-10-21
RU2006132319A (ru) 2008-04-10
KR20060125886A (ko) 2006-12-06
BRPI0418584A (pt) 2007-06-19
ZA200606924B (en) 2007-11-28
JP4746029B2 (ja) 2011-08-10
CA2557664A1 (en) 2005-09-15

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