EP2653224A1 - Testvorrichtung für Walzenbrecher - Google Patents

Testvorrichtung für Walzenbrecher Download PDF

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Publication number
EP2653224A1
EP2653224A1 EP12164953.7A EP12164953A EP2653224A1 EP 2653224 A1 EP2653224 A1 EP 2653224A1 EP 12164953 A EP12164953 A EP 12164953A EP 2653224 A1 EP2653224 A1 EP 2653224A1
Authority
EP
European Patent Office
Prior art keywords
test device
crushing
materials
sector shaped
shaped roll
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Withdrawn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
EP12164953.7A
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English (en)
French (fr)
Inventor
Andrzej Niklewski
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.)
Metso Brasil Industria e Comercio Ltda
Original Assignee
Metso Brasil Industria e Comercio Ltda
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 Metso Brasil Industria e Comercio Ltda filed Critical Metso Brasil Industria e Comercio Ltda
Priority to EP12164953.7A priority Critical patent/EP2653224A1/de
Priority to AU2013205189A priority patent/AU2013205189B2/en
Priority to CN2013201987261U priority patent/CN203323723U/zh
Priority to PCT/IB2013/053095 priority patent/WO2013156964A1/en
Priority to ARP130101298 priority patent/AR090753A1/es
Publication of EP2653224A1 publication Critical patent/EP2653224A1/de
Withdrawn legal-status Critical Current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
    • B02C4/02—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

Definitions

  • the present invention relates to a test device and a method for a test device for a roller crusher of the type which comprises a pair of crushing rolls rotating in opposite directions for crushing or pulverizing materials.
  • interparticle crushing When materials, such as stones or minerals, are crushed or pulverized using a roller crusher or a roller grinder equipment, two opposed rotatably mounted rolls, separated from each other by a gap, form a draw in nip where the materials are drawn in, force fed or fed by gravity and crushed or grinded between the rolls and against each other in a process which may be called interparticle crushing.
  • An advantage of this type of crushing is that an effective crushing may be achieved, even to very small grain sizes, with a reduced energy consumption compared to many other crushing techniques.
  • Another positive side is that the level of noise during the process is reduced compared to other crushing techniques.
  • a test device for a roller crusher of the type which comprises a pair of crushing rolls rotating in opposite directions for crushing or pulverizing materials
  • which comprises a first sector shaped roll part having a first crushing surface and which is rotatably mounted so that the first crushing surface forms one side of a gap through which materials is fed, a second sector shaped roll part having a second crushing surface and which is rotatably mounted so that the second crushing surface forms the other side of the gap.
  • the test device further comprises a sensor arrangement arranged to sense at least one property of the interaction between the materials fed through the gap and the test device.
  • the test device makes it possible to test materials in full scale, without having to build a complete roller crusher equipment.
  • the test device has the advantage of being able to test the materials as they are, without any downscaling to smaller size materials, as would have been necessary with a test device of a smaller scale. Only making the sector shaped roll parts further provides a much cheaper alternative than entire rolls.
  • the sensor arrangement makes it possible to analyze the impact that the materials crushed in the test device have on the test device, which in turn makes it possible to classify the materials in terms of density and granularity, i.e. sizes of the stones or minerals in the materials.
  • the test device can also be used to obtain valuable information on how a roller crusher equipment for the tested materials should be designed or set up, in terms of power needed for the roller crusher equipment, gap between the rolls and optimum pressing force, as information may be provided on product size and shape and effective surface pressure variations as regards the local position in a roll.
  • the sensor arrangement may comprise an opening sensor arranged to sense the width of the gap.
  • This gap has a direct relationship to the capacity of the equipment, which means that this width may then be used when selecting the distance between the rollers in a roller crusher equipment for the tested material.
  • the measured width of the gap is also used for calculating the density of the materials.
  • the sensor arrangement may comprise a first pressure sensor arranged to sense the pressure exerted on the sector shaped roll parts by the materials fed through the gap. This in turn gives the compression of the materials, which may be used to determine part of the crushing load, which in turn may be used for optimizing the pressure exerted on the rolls to improve the efficiency of the roller crusher equipment.
  • the sensor arrangement may comprise a second pressure sensor arranged to sense the force used for rotating the sector shaped roll parts. This will give an indication of the power used for rotating the sector shaped roll parts which gives valuable information when setting up an roller crusher equipment since it allows for an optimization regarding the drive train and bearings, or in other words to determine the energy necessary to crush the sample of material, which is another part of the crushing load.
  • the test device may further comprise a first hydraulic cylinder which is arranged to rotate the first sector shaped roll part, and a second cylinder which is arranged to rotate the second sector shaped roll part. In this way the rotation of the roll parts may be controlled in a simple and efficient manner.
  • the test device may further comprise a hydraulic unit which is arranged to bias the sector shaped roll parts against each other. Thereby the two roll parts will be forced towards each other creating a properly sized gap in an efficient manner, and at the same time the force used can easily be measured by the sensor arrangement.
  • the sector shaped roll parts may be arranged to rotate about 45° from a first angular position to a second angular position during a test session. In this way the test device is easily installed and takes up a reasonable amount of space. Further, this amount of rotation gives the sensor arrangement a good chance to measure the desired properties of the interaction between the test device and the tested materials.
  • a test device 1 for a roller grinder or roller crusher equipment has a first sector shaped roll part 2 and a second sector shaped roll part 3. Each roll part has a crushing surface 4, 5, respectively.
  • the test device is equally useful for a roller crusher or a roller grinder or for any type of equipment where materials are crushed, grinder or pulverized between two rolls rotating in opposite directions.
  • the sector shaped roll parts are mounted on the test device 1 so that they are able to rotate about 45° in opposing directions with their crushing surfaces 4 and 5 facing each other. That the roll parts are sector shaped means in this case that their crushing surfaces form an angular sector of an entire roll in a roller crusher equipment. As an example, a part of a roll corresponding to a sector angle of around 45° could be used in the test device.
  • a gap 6 is formed, through which materials, e.g. in the form of stones or minerals is fed, by force of gravity or in some other suitable manner.
  • materials e.g. in the form of stones or minerals is fed, by force of gravity or in some other suitable manner.
  • a brief session of crushing takes place as the materials are crushed between the rolls and against each other while passing between the sector shaped roll parts 2 and 3, which rotate in opposite directions, from a first position shown in Fig. 1 , to a second position shown in Fig. 2 , to make the material pass through the gap.
  • a first hydraulic cylinder 7 is connected to the first sector shaped roll part 2 and a second hydraulic cylinder 8 is connected to the second sector shaped roll part 3, in such a way that the hydraulic cylinders 7 and 8 are able to rotate the sector shaped roll parts 2 and 3 about 45° from the first position shown in Fig.1 to the second position shown in Fig. 2 .
  • a hydraulic unit 9 is connected to the first sector shaped part 2, in such a way that the first sector shaped roll part 3 is biased against the second sector shaped roll part 3. This in turn means that the crushing surfaces 4 and 5 are biased towards each other and the width of the gap is limited to what is necessary for materials to enter and pass through the gap during a test session.
  • the test device comprises a sensor arrangement 10, which includes a number of sensors arranged to sense different properties of the interaction between the materials passing through the gap 6 and the test device 1.
  • the sensor arrangement can in turn be connected to a data logging device (not shown), for storing the output received from each of the sensors in the sensor arrangement 10, so that the information on the properties of the interaction between the materials and the test device can be analyzed for use e.g. in setting up a new roller crusher equipment for crushing or pulverizing the tested materials.
  • a first opening sensor 11 is connected to the second hydraulic cylinder 8, for measuring the position of the cylinder, which in turn gives the angular position of the second sector shaped roll part 3.
  • ⁇ the nip angle
  • a similar sensor may be connected to the first hydraulic cylinder and will then perform a corresponding function for the first hydraulic cylinder 7. The measurements of such a sensor may then be combined with the measurements of the first opening sensor 11.
  • a second opening sensor 12 is connected to the first and the second sector shaped roll parts 2 and 3 and is arranged to measure the distance between the roll parts, which in turn gives the width of the gap 6.
  • the first and the second opening sensors 11 and 12 may be in the form of strain gauges.
  • the second opening sensor 12 in the form of a strain gauge may be attached to the rotation centers 18 and 19 of the two sector shaped roll parts 2 and 3, and the width of the gap 6 is then easily calculated from the distance measured by the strain gauge between the center points of the roll parts.
  • the first opening sensor 11 also in the form of a strain gauge, may be attached to the moving part 20 of one of the hydraulic cylinders - in the figures the second cylinder 8 - and to the non-moving part 21, thereby measuring the extension of the moving part 20 from the non-moving part 21, which in turn gives the angle of the sector shaped roll parts.
  • the nip angle is defined by the strain gauges measurement, when the crushing starts. The nip angle may then be used to calculate the expected capacity in field use.
  • a first pressure sensor 13 is connected to the hydraulic unit 9 and is arranged to measure the pressure with which the roll parts are forced or biased against each other, or correspondingly, the pressure which the materials exert on the sector shaped roll parts. By combining this pressure measurement with the pressure measured by a second pressure sensor, described below, the nominal working pressure of the equipment in relation to the application may be defined. This may then be used for optimizing the roller crusher equipment to improve the life time of the machine, reduce the wear and achieve a better performance.
  • a second pressure sensor 14 is connected to the hydraulic cylinder 7 and 8 and is arranged to measure the force that the hydraulic cylinders use to rotate the two sector shaped roll parts 2 and 3.
  • flanges may be mounted on one or both of the sector shaped roll parts 2 and 3 and further sensors may be arranged to measure the effect that the material will have on those flanges as well as the effect that the flanges have on the material being crushed.
  • a method for a test device for a roller crusher is illustrated.
  • materials M are fed into a gap 6 between the crushing surfaces 4 and 5 of the first and the second sector shaped roll parts 2 and 3.
  • step 16 the materials, or at least part of the materials, are crushed by interparticle crushing as the two roll parts rotate from the first angular position shown in Fig. 1 to the second position shown in Fig. 2 .
  • step 17 at least one property of the interaction between the materials M and the test device which took place during the crushing, or the rotation of the sector shaped roll parts, is sensed by the sensor arrangement 10.
  • the property sensed could be one of those discussed above, but any property which can be sensed and which will give information on the interaction could be chosen, and the sensing arrangement would then include sensors for that purpose.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP12164953.7A 2012-04-20 2012-04-20 Testvorrichtung für Walzenbrecher Withdrawn EP2653224A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12164953.7A EP2653224A1 (de) 2012-04-20 2012-04-20 Testvorrichtung für Walzenbrecher
AU2013205189A AU2013205189B2 (en) 2012-04-20 2013-04-14 Test device for roller crusher
CN2013201987261U CN203323723U (zh) 2012-04-20 2013-04-19 用于辊式破碎机的测试装置
PCT/IB2013/053095 WO2013156964A1 (en) 2012-04-20 2013-04-19 Test device for roller crusher
ARP130101298 AR090753A1 (es) 2012-04-20 2013-04-19 Dispositivo de prueba para trituradora de rodillos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12164953.7A EP2653224A1 (de) 2012-04-20 2012-04-20 Testvorrichtung für Walzenbrecher

Publications (1)

Publication Number Publication Date
EP2653224A1 true EP2653224A1 (de) 2013-10-23

Family

ID=46044412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164953.7A Withdrawn EP2653224A1 (de) 2012-04-20 2012-04-20 Testvorrichtung für Walzenbrecher

Country Status (3)

Country Link
EP (1) EP2653224A1 (de)
CN (1) CN203323723U (de)
AU (1) AU2013205189B2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795796A1 (de) * 2019-09-17 2021-03-24 think and vision GmbH Verfahren zur bestimmung der eigenschaften von bohrklein aus gesteinsbohrungen
US12287312B2 (en) 2019-10-04 2025-04-29 Minpraxis Solutions Ltd. Rock hardness measurement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113811393B (zh) * 2019-05-09 2023-01-10 美卓奥图泰美国有限公司 破碎装置
EP3965938A4 (de) * 2019-05-09 2023-08-23 Metso Outotec USA Inc. Zerkleinerungsvorrichtung
CN111744623A (zh) * 2020-06-28 2020-10-09 台州四强新型建材有限公司 一种用于环保型搅拌站的混凝土回收装置
US11801516B2 (en) * 2021-06-11 2023-10-31 Metso Outotec USA Inc. Roller crusher, a method for monitoring physical conditions thereof, and a refitting kit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758042A1 (de) * 1977-12-24 1979-06-28 Peter Voelskow Zerkleinerungsmaschine fuer sperrige abfaelle
GB2142446A (en) * 1983-06-30 1985-01-16 Gen Electric Method and apparatus for improved sensing of roll separation force in a rolling mill
US5078327A (en) * 1987-05-19 1992-01-07 Kemetter Georg L Device for the processing of materials
EP0492004A1 (de) * 1989-11-14 1992-07-01 MASCHINEN- UND MÜHLENBAU WITTENBERG GmbH Anordnung zum Erfassen des Walzenspaltes eines Walzenpaares
WO2008131488A1 (en) * 2007-05-01 2008-11-06 The University Of Queensland Crushing method and assembly
US20110101139A1 (en) * 2009-11-03 2011-05-05 Inoue Mfg., Inc. Roll mill with automatic control of roll-to-roll distance and inter-roll pressure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758042A1 (de) * 1977-12-24 1979-06-28 Peter Voelskow Zerkleinerungsmaschine fuer sperrige abfaelle
GB2142446A (en) * 1983-06-30 1985-01-16 Gen Electric Method and apparatus for improved sensing of roll separation force in a rolling mill
US5078327A (en) * 1987-05-19 1992-01-07 Kemetter Georg L Device for the processing of materials
EP0492004A1 (de) * 1989-11-14 1992-07-01 MASCHINEN- UND MÜHLENBAU WITTENBERG GmbH Anordnung zum Erfassen des Walzenspaltes eines Walzenpaares
WO2008131488A1 (en) * 2007-05-01 2008-11-06 The University Of Queensland Crushing method and assembly
US20110101139A1 (en) * 2009-11-03 2011-05-05 Inoue Mfg., Inc. Roll mill with automatic control of roll-to-roll distance and inter-roll pressure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795796A1 (de) * 2019-09-17 2021-03-24 think and vision GmbH Verfahren zur bestimmung der eigenschaften von bohrklein aus gesteinsbohrungen
WO2021053005A1 (en) * 2019-09-17 2021-03-25 Think And Vision Gmbh A method for determination of properties of cuttings from rock drilling
US20220412854A1 (en) * 2019-09-17 2022-12-29 Think And Vision Gmbh A method for determination of properties of cuttings from rock drilling
US12111292B2 (en) 2019-09-17 2024-10-08 Think And Vision Gmbh Method for determination of properties of cuttings from rock drilling
US12287312B2 (en) 2019-10-04 2025-04-29 Minpraxis Solutions Ltd. Rock hardness measurement

Also Published As

Publication number Publication date
AU2013205189B2 (en) 2015-07-23
AU2013205189A1 (en) 2013-11-07
CN203323723U (zh) 2013-12-04

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