EP2734304B1 - Rollenmühle und verfahren zum betreiben einer rollenmühle - Google Patents

Rollenmühle und verfahren zum betreiben einer rollenmühle Download PDF

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Publication number
EP2734304B1
EP2734304B1 EP13700910.6A EP13700910A EP2734304B1 EP 2734304 B1 EP2734304 B1 EP 2734304B1 EP 13700910 A EP13700910 A EP 13700910A EP 2734304 B1 EP2734304 B1 EP 2734304B1
Authority
EP
European Patent Office
Prior art keywords
grinding
water
ground
roller
fact
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
EP13700910.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2734304A2 (de
Inventor
Björn Olaf ASSMANN
Jörg PETRING
Guido Kache
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
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Application filed by ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp Industrial Solutions AG
Publication of EP2734304A2 publication Critical patent/EP2734304A2/de
Application granted granted Critical
Publication of EP2734304B1 publication Critical patent/EP2734304B1/de
Not-in-force 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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • 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
    • B02C15/007—Mills with rollers pressed against a rotary horizontal disc
    • 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
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed

Definitions

  • the invention relates to a roller mill for grinding regrind with a grinding table and at least one cooperating with the grinding table grinding roller and a method for operating such a roller mill as these are known for example from JPH 07 204 528 A.
  • the ground material In roller mills the ground material is usually given up centrally and passes through centrifugal force to the outside, where it is detected by rolling on the grinding table grinding rollers. From the EP 0 858 839 A1 it is already known that a moistening of the ground material causes stabilization of the grinding bed and in this way the smoothness of the roller mill and the efficiency of grinding can be improved. It is known to supply the water together with the material to be ground or directly at the delivery point on the grinding table. In the EP 0 858 839 A1 a water lance is used, which is arranged in the direction of rotation of the grinding plate before the grinding roller.
  • the volume flow of the sprayed water is controlled in response to a vibration sensor. If a certain vibration level is exceeded, the injected water volume flow is increased and vice versa.
  • the invention is therefore based on the object to make the task of water on the grinding bed even more efficient, on the one hand to positively influence the smoothness of the roller mill and to optimize the efficiency of grinding and throughput of the roller mill and on the other hand to get along with the smallest possible water flow rates.
  • this object is achieved by a roller mill with the features of claim 1 and by a method having the features of claim 6.
  • the roller mill according to the invention for grinding regrind has a grinding plate and at least one co-rotating with the grinding plate grinding roller, wherein a water lance for applying water to the material to be ground in the direction of rotation of the grinding plate is arranged in front of the grinding roller.
  • the water lance is rotatably formed and means for rotating the water lance are provided in order to influence the action time of the water on the ground material before the ground material is detected by the grinding roller, specifically.
  • a grinding plate and at least one grinding roller cooperating with the grinding plate are provided. Furthermore, water is applied to the ground material via a water lance arranged in the direction of rotation of the grinding table in front of the grinding roller.
  • the action time of the water on the material to be ground before the grinding roller detects the material to be ground is influenced by the fact that the distance between the impact of the water on the material to be ground and the detection of the material to be ground by the grinding roller is adjusted by rotation of the water lance.
  • the water lance expediently has a plurality of nozzles with nozzle axes aligned in the direction of the grinding disk in order to cover the entire width of the grinding material flow to be detected by the grinding roller.
  • the means for rotating the water lance are preferably designed such that the distance between the impact of the water on the ground material and the detection of the ground material through the grinding roller by a rotation of the water lance is variable.
  • a grinding path is formed in the active region of the grinding roller, wherein the water lance expediently extends transversely to this grinding path and thus radially to the grinding table.
  • the water lance is additionally arranged to be displaceable in the direction of its longitudinal extent. In this way, a further adaptation and alignment of the water jets is possible.
  • the lance can be pulled out of the grinding chamber in the maintenance and / or repair case in this way. If this is possible during operation, the grinding process does not have to be interrupted.
  • the rotation of the water lance is expediently carried out as a function of at least one operating parameter (for example fluctuations in the power consumption of the drive, fluctuations in the hydraulic pressure, grinding bed height, theoretical rolling points of the grinding rollers).
  • at least one operating parameter for example fluctuations in the power consumption of the drive, fluctuations in the hydraulic pressure, grinding bed height, theoretical rolling points of the grinding rollers.
  • the illustrated roller mill essentially has a grinding table 1 and two grinding rollers 2 cooperating with the grinding table.
  • each grinding roller 2 is associated with a water lance 3, which is arranged in the direction of rotation of the grinding table 1 before each grinding roller 2.
  • the grinding roller 2 and the grinding table 1 are arranged in a limited by a mill housing 5 grinding chamber.
  • water lance 3 is here designed as an elongated pipe section, which has on the grinding table 1 side facing a plurality of nozzles 3a.
  • the water lance 3 supplied water 6 is injected in the form of emerging from the nozzles 3a water jets 6a on the grinding table 1 supplied millbase 7.
  • the water lance is according to the double arrow 8 ( Fig. 1 ) via means 9 rotatable.
  • the nozzles 3a of the water lance 3 can in particular the in Fig. 4b . 5b and 6b represented position with respect to the grinding table 1 and the associated grinding roller 2.
  • the water lance is also slidably disposed in the direction of its longitudinal extent according to the double arrow 10 and can be pulled out in particular from the mill housing 5, for example for maintenance or repair purposes.
  • the adjustment according to the double arrows 8 and 10 can be done in particular during the ongoing grinding operation.
  • the material to be ground 7 is usually placed centrally on the grinding table 1, and then moves due to the centrifugal force according to the dashed arrows 11 to the outside, where it comes in the region of the grinding path 12 on which the grinding rollers 2 roll on the grinding table 1.
  • the location and direction with which the material to be ground 7 in the Area of the grinding path is different, as in the Fig. 4a .
  • 5a and 6a is shown schematically for three different situations.
  • this distance is a 1 shortest and in the position according to Fig. 6a and 6b (Distance a 2 ) the longest, while the Fig. 4a and 4b show a mean distance a 3 .
  • the impact area of the water jets 6a on the ground material 7 can be influenced in a targeted manner.
  • the water injection can be optimally adjusted to the present operating conditions of the roller mill.
  • the exposure time of the water in the ground material 7 to the detection of the grinding roller 2 can be selectively influenced and the water injection is focused on a localized area. As a result, the necessary volume flow for stabilizing the grinding bed can be minimized, since an alignment of the injected water volume flow can be made to the most effective range.
  • the means 9 are set for turning to rotate and / or radial displacement of the water lance 3 as a function of at least one operating parameter.
  • operating parameters for example, the fluctuation of the power consumption of the drives for the grinding table 1 and / or the grinding rollers 2, fluctuations in the hydraulic contact pressure of the grinding rollers 2, the Mahlbettière or the theoretical rolling point of the grinding rollers 2 can be used.
  • the above-described rotatable water lance for water injection is particularly suitable for roller mills with varying grinding materials or grinding properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP13700910.6A 2012-02-06 2013-01-22 Rollenmühle und verfahren zum betreiben einer rollenmühle Not-in-force EP2734304B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012100946.5A DE102012100946B4 (de) 2012-02-06 2012-02-06 Rollenmühle und Verfahren zum Betreiben einer Rollenmühle
PCT/EP2013/051133 WO2013117423A2 (de) 2012-02-06 2013-01-22 Rollenmühle und verfahren zum betreiben einer rollenmühle

Publications (2)

Publication Number Publication Date
EP2734304A2 EP2734304A2 (de) 2014-05-28
EP2734304B1 true EP2734304B1 (de) 2014-10-29

Family

ID=47598842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13700910.6A Not-in-force EP2734304B1 (de) 2012-02-06 2013-01-22 Rollenmühle und verfahren zum betreiben einer rollenmühle

Country Status (8)

Country Link
US (1) US9573138B2 (enrdf_load_stackoverflow)
EP (1) EP2734304B1 (enrdf_load_stackoverflow)
JP (1) JP6162151B2 (enrdf_load_stackoverflow)
CN (1) CN104271246B (enrdf_load_stackoverflow)
DE (1) DE102012100946B4 (enrdf_load_stackoverflow)
DK (1) DK2734304T3 (enrdf_load_stackoverflow)
IN (1) IN2014DN06217A (enrdf_load_stackoverflow)
WO (1) WO2013117423A2 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012107740A1 (de) * 2012-08-22 2014-02-27 GFB Gesellschaft für Bemessungsforschung mbH Verfahren zum Mahlen
DE102015203856A1 (de) 2015-03-04 2016-12-15 Thyssenkrupp Ag Vertikal-Rollenmühle
EP3917897A4 (en) * 2019-02-01 2022-09-14 GCP Applied Technologies Inc. MOISTURE MANAGEMENT IN VERTICAL ROLLER MILLS
CN115461155B (zh) 2020-04-23 2023-11-24 吉布尔法伊弗股份公司 具有材料输入识别的研磨方法和设施

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926735B1 (de) * 1969-05-24 1970-12-17 Perrot Regnerbau Gmbh & Co Auf unterschiedlich grosse Beregnungsflaechen einstellbarer Regner
JPS51163172U (enrdf_load_stackoverflow) * 1975-06-20 1976-12-25
SE421752B (sv) * 1978-05-02 1982-02-01 Broman John S Forfarande och kvarn for klasserande-separerande vatmalning av bergarter o dylikt
DE3033417A1 (de) 1980-09-05 1982-04-22 Perrot-Regnerbau Gmbh & Co, 7260 Calw Auf unterschiedliche beregnungsbeduerfnisse variierbarer regner
JPS6179651A (ja) 1984-09-27 1986-04-23 株式会社アイジー技術研究所 サンドイッチ板の製造方法
JPS6179651U (enrdf_load_stackoverflow) * 1984-10-31 1986-05-27
JPH06296886A (ja) * 1993-04-16 1994-10-25 Sumitomo Metal Ind Ltd 高炉水砕スラグ微粉末の製造方法
JP2744403B2 (ja) * 1994-01-13 1998-04-28 川崎重工業株式会社 竪型ミル
US6193176B1 (en) 1997-02-18 2001-02-27 Kawasaki Jukogyo Kabushiki Kaisha Cement clinker grinding method using vertical roller mill and apparatus
JP2000140662A (ja) * 1998-11-02 2000-05-23 Babcock Hitachi Kk ローラミル
JP2000140663A (ja) 1998-11-09 2000-05-23 Babcock Hitachi Kk ローラミル
JP2000157882A (ja) 1998-11-26 2000-06-13 Mitsubishi Heavy Ind Ltd ローラミル
CN201161202Y (zh) 2008-02-21 2008-12-10 江苏恒远国际工程有限公司 一种研磨机
CN201524599U (zh) 2009-05-26 2010-07-14 中国建材装备有限公司 一种立磨磨内喷水装置

Also Published As

Publication number Publication date
IN2014DN06217A (enrdf_load_stackoverflow) 2015-10-23
EP2734304A2 (de) 2014-05-28
DE102012100946A1 (de) 2013-08-08
DE102012100946B4 (de) 2017-12-28
US9573138B2 (en) 2017-02-21
JP6162151B2 (ja) 2017-07-12
CN104271246A (zh) 2015-01-07
JP2015506273A (ja) 2015-03-02
WO2013117423A3 (de) 2013-12-19
CN104271246B (zh) 2016-05-25
DK2734304T3 (en) 2015-02-02
US20150014452A1 (en) 2015-01-15
WO2013117423A2 (de) 2013-08-15

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