EP2498911B1 - Mahlwalze einer walzenmühle - Google Patents

Mahlwalze einer walzenmühle Download PDF

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Publication number
EP2498911B1
EP2498911B1 EP11790945.7A EP11790945A EP2498911B1 EP 2498911 B1 EP2498911 B1 EP 2498911B1 EP 11790945 A EP11790945 A EP 11790945A EP 2498911 B1 EP2498911 B1 EP 2498911B1
Authority
EP
European Patent Office
Prior art keywords
roller
grinding
mill
grinding roller
shrink fit
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
EP11790945.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2498911A2 (de
Inventor
Ralf Martens
Herbert Pingel
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp Resource Technologies GmbH
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 ThyssenKrupp Resource Technologies GmbH filed Critical ThyssenKrupp Resource Technologies GmbH
Publication of EP2498911A2 publication Critical patent/EP2498911A2/de
Application granted granted Critical
Publication of EP2498911B1 publication Critical patent/EP2498911B1/de
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
    • 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
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Definitions

  • the invention relates to a grinding roller of a roller mill with a roller shaft, a roller body and an outer wear protection wear ring.
  • the invention relates to a roller mill for crushing the brittle material to be ground with two counter-rotating grinding rollers.
  • a roller for processing iron or steel into thin plates or strips according to the preamble of claim 1 is known. It consists of a roll shaft with shrunk roll body, wherein the roll body has a heat treated hardened surface.
  • the DE 38 43 173 C2 As a wear-resistant surface armor for rolls of rolling machines, it provides a plurality of metallic layers of different materials or hardnesses welded onto a roll main body.
  • a grinding roll for a roll press which has a roll base body applied to a stepped and integrally formed shaft 3 and a one-piece or split-ring wear ring attached thereto.
  • the invention is therefore based on the object of reducing the operating costs of a grinding roller or roller mill by prolonged use of the roller body.
  • the grinding roller of a roller mill consists essentially of a roller shaft, a roller base body and an outer, a wear protection wear ring, wherein the connection between the roller shaft and roller body is formed by shrink fit.
  • the roller base body is formed by at least 3 or 4 coaxially arranged intermediate rings.
  • roller body Due to the subdivision of the roller body in at least 3 or 4 coaxially arranged intermediate rings, it is sufficient if only the outermost intermediate ring is replaced after repeated processing, while previously the entire roller body was replaced. Due to this design, the operating costs of a roller mill can be reduced by up to 10% depending on the number of intermediate rings.
  • the basic cylinder body or the intermediate rings are cast steel or forgings whose radial strength is limited in terms of manufacturing technology.
  • the grinding roller according to the invention has the further advantage that the overall diameter of the roller body can be significantly increased by a correspondingly increased number of intermediate rings. Therefore, grinding rolls having large diameters of at least 3 m, preferably at least 3.5 m and more, can be easily produced.
  • connections between the intermediate rings and between the outer intermediate ring and the wear ring are preferably also formed by shrink fit, with either a conical or a cylindrical shrink fit can be used.
  • the cylindrical shrink fit will be chosen especially in later connections no longer to be solved, while the conical shrink fit can be solved easily.
  • a conical shrink fit is particularly advantageous for the connection of the outermost intermediate ring with the wear ring and with the next inner intermediate ring.
  • the grinding roller may have a diameter of at least 4.5 m and a width of at least 2.5 m.
  • the wear protection can also be formed by protruding from the surface of the wear ring profile bodies and / or hard surfacing.
  • the grinding rolls described above are used in a roll mill for the comminution of brittle material to be ground, in which two counter-rotating grinding rolls are provided. This can happen in particular to act a high-pressure roller mill, in which there is provided with at least one grinding roller in operative connection force application system for generating a grinding pressure of at least 50 MPa.
  • roller mill shown for crushing brittle grinding material essentially comprises grinding rollers 1, 2, the roller shafts 3, 4 are mounted in bearings 5, 6 and 7, 8.
  • the bearings 5 to 8 are preferably plain bearings.
  • an adjustable grinding gap 9 is maintained and the required grinding pressure of, for example, at least 50 MPa is generated by a Kraftbeaufyerungssystem 10. Both grinding rollers 1, 2 are driven in opposite directions via coupled to the roller shafts 3, 4 drives 11, 12.
  • roller mill is preferably a high-pressure roller press
  • other mills are also conceivable within the scope of the invention, such as, for example, a vertical roller mill, in which the grinding rollers described in more detail below could also be used.
  • both grinding rollers 1, 2 are constructed identically, will be described below with reference to the Fig. 2 and 3 two embodiments described in more detail only with reference to the grinding roller 1.
  • the roller base 13 is formed in the illustrated embodiment by 3 coaxially arranged intermediate rings 13a, 13b and 13c, the intermediate rings 13a to 13c forming the roller base 1 of the roller body can be made of different materials. So it is conceivable that only the outer intermediate ring 13c from the usual, relatively expensive bearing steel, e.g. 18NiCrMo14-6 is manufactured, while for the other intermediate rings 13a and 13b a sufficiently strong structural steel, for example S355J2G3 is used. Through this possibility, the procurement situation for the material of the roll body is noticeably relaxed. In addition, the mild steel compared to the bearing steel is excellentgüstiger.
  • Fig. 2 are the connections between the intermediate ring 13a and shaft 3 and between the intermediate rings and the connection between the outer intermediate ring 13c and the wear ring 14 carried out by means of cylindrical shrink fit.
  • connection between the two intermediate rings 13'c and 13'b and between the wear ring 14 'and the intermediate ring 13'c are provided by means of conical shrink fit.
  • the conical Shrink fit allows for easier release of the connection, if this should be required later in the treatment.
  • the grinding roller according to the invention can initially be processed several times only by processing the wear ring. Once the wear ring allows no further treatment and the roll body is attacked, only the outermost intermediate ring must be replaced 13c and 13'c of the roll body. The remaining roll body can therefore remain in use. Of course, it is also possible to convert a large grinding roller instead of removing the worn outer intermediate ring in a correspondingly smaller grinding roller. The operating costs of a grinding roller can be significantly reduced in this way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP11790945.7A 2010-12-17 2011-11-28 Mahlwalze einer walzenmühle Not-in-force EP2498911B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010061309A DE102010061309B3 (de) 2010-12-17 2010-12-17 Mahlwalze einer Walzenmühle
PCT/EP2011/071156 WO2012079965A2 (de) 2010-12-17 2011-11-28 Mahlwalze einer walzenmühle

Publications (2)

Publication Number Publication Date
EP2498911A2 EP2498911A2 (de) 2012-09-19
EP2498911B1 true EP2498911B1 (de) 2013-08-28

Family

ID=45093738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11790945.7A Not-in-force EP2498911B1 (de) 2010-12-17 2011-11-28 Mahlwalze einer walzenmühle

Country Status (11)

Country Link
US (1) US9272284B2 (da)
EP (1) EP2498911B1 (da)
AU (1) AU2011344551B2 (da)
BR (1) BR112013013401A8 (da)
CA (1) CA2818801C (da)
CL (1) CL2013001688A1 (da)
DE (1) DE102010061309B3 (da)
DK (1) DK2498911T3 (da)
MX (1) MX2013006890A (da)
PE (1) PE20131507A1 (da)
WO (1) WO2012079965A2 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110639218A (zh) * 2019-09-10 2020-01-03 上海上诺精细化学有限公司 聚合高分子降失水剂干燥及堆积密度提高的方法及装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201814882T4 (tr) 2013-12-20 2018-10-22 Khd Humboldt Wedag Gmbh Bir silindir merdanesinde girintilerin işlenmesine yönelik yöntem.
DE102015222020A1 (de) 2015-11-09 2017-05-11 Thyssenkrupp Ag Werkzeug zur Bearbeitung von abrasiven Materialien
DE102019200190A1 (de) * 2019-01-09 2020-07-09 Thyssenkrupp Ag Mahlwalze mit Randelementen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1885241A (en) 1930-10-24 1932-11-01 Charles B Duckworth Crushing roll
US1938995A (en) * 1931-08-17 1933-12-12 Ross E Beynon Built-up roll
US2588900A (en) * 1949-11-01 1952-03-11 Jeffrey Mfg Co Crusher-roll covering element
SE408326B (sv) 1977-10-07 1979-06-05 Asbrink Eiker Ab Regleranordning for hydraulanleggning
US4546527A (en) * 1981-12-01 1985-10-15 Kubota Ltd. Composite sleeve for use in rolling rolls for H-section steel and channel steel
DE3843173A1 (de) * 1988-12-22 1990-07-05 Kloeckner Humboldt Deutz Ag Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere hochdruck-walzenpressen
DE9422077U1 (de) * 1993-07-20 1998-01-22 Maschinenfabrik Köppern GmbH & Co KG, 45529 Hattingen Walzenpresse, insbesondere zum Zerkleinern von stark abrasiven Stoffen
AU7531894A (en) 1993-07-20 1995-02-20 Gunter, Harald Roller presses, in particular for crushing strongly abrasive substances
US20120048976A1 (en) * 2009-04-20 2012-03-01 Hofmann Engineering Pty Ltd. Pressure roller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110639218A (zh) * 2019-09-10 2020-01-03 上海上诺精细化学有限公司 聚合高分子降失水剂干燥及堆积密度提高的方法及装置

Also Published As

Publication number Publication date
DK2498911T3 (da) 2013-11-18
DE102010061309B3 (de) 2012-05-24
AU2011344551B2 (en) 2016-03-03
CA2818801A1 (en) 2012-06-21
US20130248630A1 (en) 2013-09-26
MX2013006890A (es) 2013-07-05
EP2498911A2 (de) 2012-09-19
WO2012079965A2 (de) 2012-06-21
WO2012079965A3 (de) 2012-08-09
CL2013001688A1 (es) 2013-12-06
PE20131507A1 (es) 2014-01-10
BR112013013401A8 (pt) 2018-02-06
BR112013013401A2 (pt) 2016-09-06
CA2818801C (en) 2018-03-20
US9272284B2 (en) 2016-03-01
AU2011344551A1 (en) 2013-06-13

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