EP2817100B1 - Vertikalrollenmühle und verfahren zum betreiben einer vertikalrollenmühle - Google Patents

Vertikalrollenmühle und verfahren zum betreiben einer vertikalrollenmühle Download PDF

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Publication number
EP2817100B1
EP2817100B1 EP13701064.1A EP13701064A EP2817100B1 EP 2817100 B1 EP2817100 B1 EP 2817100B1 EP 13701064 A EP13701064 A EP 13701064A EP 2817100 B1 EP2817100 B1 EP 2817100B1
Authority
EP
European Patent Office
Prior art keywords
grinding
roller
plate
driven
braked
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
EP13701064.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2817100A2 (de
Inventor
Markus Berger
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 Industrial Solutions AG
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Filing date
Publication date
Application filed by ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp Industrial Solutions AG
Publication of EP2817100A2 publication Critical patent/EP2817100A2/de
Application granted granted Critical
Publication of EP2817100B1 publication Critical patent/EP2817100B1/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
    • 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
    • B02C15/006—Ring or disc drive gear arrangement
    • 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
    • B02C15/14—Edge runners, e.g. Chile mills

Definitions

  • the invention relates to a vertical roller mill and a method for operating a vertical roller mill whose grinding units, consisting of a grinding plate and at least one grinding roller, cooperate such that grinding material is comminuted between the grinding plate and the at least one grinding roller, wherein at least one grinding unit driven and at least one grinding unit is being towed.
  • a roller mill with a rotatably mounted about a vertical axis table which is provided with an annular groove in its upper side and cooperates with convex grinding rollers, which forms a gap between the spherical peripheral part of the grinding rollers and the annular groove, crushed in the ground material and crushed.
  • the present invention is therefore based on the object to improve the vertical roller mill and the method for operating the vertical roller mill to the effect that the fines per MahltechnikmaschinectionAND (crushing progress during the stress in the grinding bed between the grinding roller and grinding plate) is increased.
  • its grinding units consisting of a grinding plate and at least one grinding roller, cooperate in such a way that the material to be ground in the grinding bed is between the grinding plate and the at least one grinding roller is comminuted, wherein at least one grinding unit is driven and at least one grinding unit is towed, and the towed grinding unit is braked to increase the flow of energy through the grinding bed between the grinding table and the at least one grinding roller.
  • the vertical roller mill according to the invention has at least one driven and at least one towed grinding unit, wherein the grinding units are formed by a grinding table and at least one grinding roller, which cooperate in such a way that ground material is comminuted in the grinding bed between the grinding table and the at least one grinding roller.
  • the towed grinding aggregate also acts to increase the flow of energy through the grinding bed between the grinding table and the at least one grinding roller with a braking device for braking the towed grinding aggregate.
  • the towed grinding unit is not driven by a drive, but only rotated about the material to be ground in rotation.
  • the increase in the energy flow through the grinding bed results in an increase in the slip between the grinding table and the at least one grinding roller, which will be described below with reference to FIGS FIGS. 1 to 3 is explained in more detail.
  • a grinding table 1 a grinding roller 2 and the grinding bed 3 are shown schematically.
  • the force application point of the grinding roller 2 on the grinding bed 3 is indicated by the reference numeral 4.
  • the slip is defined by the differential speed ⁇ v S between the peripheral speed of the grinding roller 2 in the force application point 4 and the peripheral speed of the grinding table 1 in the force application point (radius R K ) projected vertically downwards onto the grinding table 1.
  • Fig. 2 shows an example with driven grinding roller 2 and dragged grinding table 1 in the region of the force application point 4. It is clear that the upper, coming into contact with the grinding roller 2 layer of the grinding bed 3, a higher speed than those with the towed grinding plate 1 in contact having lower layer. The difference between the highest and the lowest speed is referred to as slip ⁇ v S1 .
  • Fig. 3 the trailed grinding table 1 is additionally braked. While the speed of the uppermost layer of the grinding bed 3 remains substantially unchanged, the speed of the lower layer in contact with the grinding table 1 is reduced. Accordingly, the slip ⁇ v S2 is in Fig. 3 greater than the slip ⁇ v S1 in the situation according to Fig. 2 , On the other hand, if the grinding plate speed is influenced by regulation (eg constant speed), then the speed of the layer in contact with the grinding roller 2 increases.
  • regulation eg constant speed
  • the resulting slip ⁇ v S1 of Fig. 2 depends mainly on the force exerted on the grinding bed on the grinding bed normal force, the grinding bed 3 of the geometry of grinding rollers and grinding table and the transmitted moment.
  • the braking of the grinding table 1 in Fig. 3 increases with the same normal force of the slip .DELTA.v S2 , resulting in an increased shear stress in the grinding bed 3. This in turn has an immediate effect on a higher fines content per run.
  • the increase in the energy flow through the grinding bed can be realized in various ways.
  • a grinding roller can be driven and the grinding table can be braked, or at least the grinding table can be driven and at least one grinding roller can be braked.
  • energy is generated during braking of a grinding unit, which is used to drive the other grinding unit.
  • the energy consumption of the entire system increases only slightly, whereas the grinding efficiency increases significantly with a desired target fineness.
  • the slip between the grinding plate and the at least one grinding roller is regulated within a predetermined range.
  • the rotational speed of the braked grinding unit can be determined and for Regulation can be used.
  • the slip between the grinding plate and at least one grinding roller is regulated as a function of the fines content of the comminuted material to be ground.
  • the braked grinding unit is advantageously braked relative to the driven grinding unit in such a way that the slip between the grinding plate and the at least one grinding roller is controlled within a range of 3-10%. Furthermore, the braked unit with respect to the driven grinding unit can be braked so that the slip between the grinding table and the at least one grinding roller relative to an unrestrained and merely towed grinding unit increased by 15-100%.
  • the at least one driven grinding unit can be formed by at least one grinding roller, which cooperates with a Mahlrollenantrieb and the at least one trailed grinding unit can be formed by the grinding table, which cooperates with a braking device.
  • the at least one driven grinding unit is formed by the grinding table, which cooperates with a Mahltellerantrieb and the at least one towed grinding unit is formed by at least one grinding roller, which cooperates with the braking device.
  • the braking action can be formed in particular by a generator.
  • two milling rollers 2, 5 are driven by associated Mahlrollenantriebe 6, 7.
  • the grinding table 1 is towed over the grinding bed 3 and is connected to a braking device 8 for controlling the slip between the grinding table 1 and the grinding rollers 2, 5 in operative connection.
  • a control device 9 is provided, which is in communication with the Mahlrollenantrieben 6, 7 and the braking device 8.
  • the actual slip can, for example, via sensors, in particular sensors for detecting the Revolution speeds of grinding plate 1 and possibly the grinding rollers 2, 5, are determined.
  • the braking device 8 is designed here as a generator to generate energy when braking the grinding plate 1, which can be used for the Mahlrollenantriebe 6 and / or 7 via a common intermediate energy storage device 14.
  • the grinding table 1 is driven via a grinding table drive 11. Furthermore, the grinding roller 2 is driven via the Mahlrollenantrieb 6. A grinding roller 12, however, is braked by a braking device 10. Again, the resulting braking energy for driving the grinding roller 2 and / or the grinding table 1 can be used. The slip between the grinding roller 12 and the grinding table 1 can be controlled again via the control device 9 in a predetermined range.
  • the variant according to Fig. 5 has the advantage of greater flexibility of the mill, in particular a higher proportion of fines can be realized with an increased throughput.
  • Fig. 6 and Fig. 7 the situation of slippage between a merely dragged or braked grinding roller and a driven grinding plate is shown, wherein the grinding roller 13 in Fig. 6 only dragged and the grinding roller 12 in Fig. 7 is additionally braked. Again, it can be seen that by the additional braking of the grinding roller 12, the slip between the grinding roller 12 and Grinding plate 1 or the shear stress within the grinding bed 3 is again increased ( ⁇ v S3 ⁇ v S4 ).
  • a grinding table 1 driven by a grinding table drive 11 is combined with a grinding roller 12 braked by a braking device 10 and a grinding roller 13 only towed.
  • the adjustment of the slip between the braked grinding roller 12 and the grinding table 1 is again via the control device 9.
  • the energy obtained during the braking process can be used to drive the grinding table 1.
  • the resulting slip in the area of the grinding rollers 12 and 13 is also from the 6 and 7 seen.
  • a braked grinding plate 1 is combined with a driven grinding roller 2 and a braked grinding roller 12.
  • Mahltellerantrieb 11 and braking device 10 of the grinding table are realized by an aggregate, which can optionally drives or brakes.
  • the Mahlrollenantriebe 6 and 7 and the braking device 12 may be formed by an aggregate, which can realize both tasks.
  • each of the additional grinding rollers can either be driven, braked or merely towed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP13701064.1A 2012-02-24 2013-01-22 Vertikalrollenmühle und verfahren zum betreiben einer vertikalrollenmühle Not-in-force EP2817100B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101489.2A DE102012101489B4 (de) 2012-02-24 2012-02-24 Vertikalrollenmühle und Verfahren zum Betreiben einer Vertikalrollenmühle
PCT/EP2013/051134 WO2013124106A2 (de) 2012-02-24 2013-01-22 Vertikalrollenmühle und verfahren zum betreiben einer vertikalrollenmühle

Publications (2)

Publication Number Publication Date
EP2817100A2 EP2817100A2 (de) 2014-12-31
EP2817100B1 true EP2817100B1 (de) 2016-03-30

Family

ID=47603706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13701064.1A Not-in-force EP2817100B1 (de) 2012-02-24 2013-01-22 Vertikalrollenmühle und verfahren zum betreiben einer vertikalrollenmühle

Country Status (7)

Country Link
US (1) US9643188B2 (da)
EP (1) EP2817100B1 (da)
JP (1) JP6196243B2 (da)
CN (1) CN104220172B (da)
DE (1) DE102012101489B4 (da)
DK (1) DK2817100T3 (da)
WO (1) WO2013124106A2 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015203856A1 (de) 2015-03-04 2016-12-15 Thyssenkrupp Ag Vertikal-Rollenmühle
CN114867560B (zh) * 2020-02-14 2023-07-04 蒂森克虏伯工业解决方案股份公司 具有同步装置的辊磨机
CN112452465A (zh) * 2020-11-02 2021-03-09 中创科技孵化器泰州有限公司 一种稳固型新材料生产加工用磨粉装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507010A (en) * 1976-07-27 1978-04-12 Smidth & Co As F L Roller mill
JPS58159854A (ja) 1982-03-16 1983-09-22 株式会社神戸製鋼所 竪型ロ−ラミルのロ−ラ駆動方法及びその装置
JPS614548A (ja) * 1984-06-16 1986-01-10 川崎重工業株式会社 竪型ミル
DE19702854A1 (de) * 1997-01-27 1998-07-30 Krupp Polysius Ag Verfahren und Rollenmühle zur Zerkleinerung von Mahlgut
CN101332442A (zh) * 2007-06-28 2008-12-31 中信重工机械股份有限公司 一种立式辊磨机磨辊加压装置
DE102007033256A1 (de) * 2007-07-17 2009-01-22 Polysius Ag Rollenmühle
AU2008313822B2 (en) * 2007-10-16 2013-05-02 Flsmidth A/S Roller mill
JP5549180B2 (ja) * 2009-10-26 2014-07-16 株式会社Ｉｈｉ 竪型ミル
JP2011092818A (ja) * 2009-10-27 2011-05-12 Ihi Corp 竪型ミル
JP2011245372A (ja) 2010-05-24 2011-12-08 Mitsubishi Heavy Ind Ltd 竪型ミル

Also Published As

Publication number Publication date
EP2817100A2 (de) 2014-12-31
DK2817100T3 (da) 2016-07-04
WO2013124106A3 (de) 2014-03-20
CN104220172A (zh) 2014-12-17
CN104220172B (zh) 2016-08-24
JP2015508021A (ja) 2015-03-16
US20150014455A1 (en) 2015-01-15
JP6196243B2 (ja) 2017-09-13
DE102012101489B4 (de) 2016-04-28
DE102012101489A1 (de) 2013-08-29
US9643188B2 (en) 2017-05-09
WO2013124106A2 (de) 2013-08-29

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