WO2015166139A1 - Procédé et agencement pour fournir de l'énergie à un agencement détecteur sur un tube broyeur - Google Patents

Procédé et agencement pour fournir de l'énergie à un agencement détecteur sur un tube broyeur Download PDF

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Publication number
WO2015166139A1
WO2015166139A1 PCT/FI2015/050287 FI2015050287W WO2015166139A1 WO 2015166139 A1 WO2015166139 A1 WO 2015166139A1 FI 2015050287 W FI2015050287 W FI 2015050287W WO 2015166139 A1 WO2015166139 A1 WO 2015166139A1
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WO
WIPO (PCT)
Prior art keywords
coil element
grinding mill
arrangement
metallurgical
transmitting
Prior art date
Application number
PCT/FI2015/050287
Other languages
English (en)
Inventor
Nikolai Vatanski
Ari Rantala
Jussi JÄRVINEN
Original Assignee
Outotec (Finland) Oy
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 Outotec (Finland) Oy filed Critical Outotec (Finland) Oy
Publication of WO2015166139A1 publication Critical patent/WO2015166139A1/fr

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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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/1805—Monitoring devices for tumbling mills

Definitions

  • the present invention relates to the field of mineral and metallurgical processes, to disintegrating in general and to disintegrating by tumbling mills, and more particularly to a method and arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill, and to a sensor arrangement on a large rotating mineral and metallurgical grinding mill.
  • the processes concerned are preceded by comminution processing i.e. mechanical crushing, grinding or disintegration of the material in a manner to liberate the valuable components.
  • comminution processing i.e. mechanical crushing, grinding or disintegration of the material in a manner to liberate the valuable components.
  • concentration methods i.e. flotation, gravimetric separation, magnetic separation, this isolation being contingent on differences in color, shape, density or in differences in their respective surface active and magnetic properties, or other properties.
  • Comminution is particle size reduction of materials. Comminution is achieved by blasting, crushing and grinding. In comminution processing first ore or rock is excavated, broken down or removed by blasting. Blasting is the controlled use of explosives and other methods in mining, quarrying and civil engineering. Typically blasting produces particles in the size having a diameter of 500 mm or more.
  • Crushing is particle size reduction of ore or rock materials by using crushing devices i.e. crushers.
  • Crushers e.g. jaw crushers, gyratory crushers or cone crushers are used to reduce the size, or change the form, of materials so that pieces of different composition can be differentiated.
  • the crushing devices hold material being crushed between two parallel or tangent solid surfaces of a stronger material and apply sufficient force to bring said surfaces together.
  • particles having a diameter up to 1000 mm are crushed to particles having a diameter of 5 mm or more.
  • Grinding is particle size reduction of ore or rock materials in grinding mills.
  • the demands for rotating mineral and metallurgical grinding mills are very high both in terms of grinding efficiency and energy consumption.
  • particles having a diameter up to 1000 mm are grinded to particles having a diameter of 0,010 mm or more.
  • This conventional grinding of materials results in considerable wear on the grinding bodies present in the mill, due to the hardness of the rock concerned, therewith also resulting in considerable costs for the provision of such grinding bodies.
  • the rotating mineral and metallurgical grinding mills are typically very large, having a diameter of several meters.
  • the grinding mills may be trunnion-supported or shell-supported.
  • Trunnion support is the most common way of supporting a mill in a mineral processing application, especially in very large grinding mills.
  • the support bearings In a bearing arrangement of a trunnion-supported grinding mill the support bearings have a relatively small bearing diameter and the trunnion journals have a high consistent stiff journal surfaces, this facilitating the formation of a good bearing lubricant film distribution.
  • the shell-supported grinding mills are more compact, occupy less floor space and require simpler foundations than comparable trunnion-supported grinding mills. Because the end plates of the shell-supported grinding mill do not support the structure, the feed and discharge openings may be sized to meet process conditions without being constrained by trunnion bearing limitations.
  • a ball mill is a typical type of fine grinder.
  • the rotating mineral and metallurgical grinding mills are today very often autogenous grinding mills or semi-autogenous grinding mills designed for grinding or primary crushed ore.
  • Autogenous grinding mills are so-called due to the self-grinding of the ore.
  • a rotating drum throws larger rocks of ore in a cascading motion which causes impact breakage of larger rocks and compressive grinding of finer particles.
  • the actual material itself i.e. the material to be ground, forms the grinding bodies.
  • Semi-autogenous grinding mills are similar to autogenous mills, but utilize grinding balls e.g. steel grinding balls to aid in grinding like in a ball mill. Attrition between grinding balls and ore particles causes grinding of finer parti- cles. Semi-autogenous grinding mills typically use a grinding ball charge of 8 to 21 %, sometimes a grinding ball charge of 5 to 60%. A semi-autogenous grinding mill is generally used as a primary or first stage grinding solution. Semi- autogenous grinding mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries.
  • Autogenous and semi-autogenous grinding mills are typically characterized by their large diameter and short length as compared to ball mills.
  • the rotating mineral and metallurgical grinding mills such as autogenous and semi-autogenous grinding mills are typically driven by ring gears, with a 360° fully enclosing guard.
  • the large rotating mineral and metallurgical grinding mill is usually operated in an environment having a lot of dust and dirt as well as noise vibra- tion and moisture, all these elements contributing to the challenges in the measurements carried by the on-apparatus type of sensor arrangement.
  • Fur- thermore on shell measurement apparatus requires continuing maintenance free and reliable power supply in order to function properly.
  • a typical grinding mill is operating 365 days per year with only few maintenance breaks therefore the power supply and measurement apparatus needs to be practically mainte- nance free and design for high availability.
  • Figure 1 shows a perspective view of a prior art sensor arrangement on a large rotating mineral and metallurgical grinding mill.
  • FIG. 1 shows a perspective view of a prior art sensor arrangement on a large rotating mineral and metallurgical grinding mill.
  • the presented prior art grinding mill has a drum shell surface marked with a reference number 1 .
  • On the grinding mill drum shell surface 1 there is arranged a sensor arrangement 2 according to the prior art.
  • the sensor arrangement 2 according to the prior art arranged on the grinding mill drum shell surface 1 is powered by ex- ternal batteries 3, 4 arranged on the grinding mill drum shell surface 1 .
  • the external batteries 3, 4 provide power to the sensor arrangement 2 according to the prior art.
  • the problem therefore is to find a solution for providing power to a sensor arrangement on large rotating mineral and metallurgical grinding mill which can provide power reliably for the entire runtime of the large rotating mineral and metallurgical grinding mill.
  • a method for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill which method would provide power more reliably and more durable when compared to the prior art solutions.
  • an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill which arrangement would be more reliable and and more durable when compared to the prior art solutions; and also a demand for a sensor arrangement on a large rotating mineral and metallurgical grinding mill having such characteristics.
  • An object of the present invention is thus to provide a method and an apparatus for implementing the method so as to overcome the above problems and to alleviate the above disadvantages.
  • the objects of the invention are achieved by a method for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill which method comprises the steps of:
  • said at least one receiving coil element is arranged on a portion of the entire shell surface around the rotating mineral and metallurgical grinding mill.
  • said at least one receiving coil element for receiving inductive charge is arranged on the entire shell surface around the rotating mineral and metallurgical grinding mill.
  • transmitting unit arranged outside said large rotating mineral and metallurgical grinding mill, said transmitting unit having at least one transmitting coil element for creating an alternating electromagnetic field to said at least one transmitting coil element for transmitting inductive charge to an at least one receiving coil element;
  • an at least one receiving coil element for taking power by receiving inductive charge, said at least one receiving coil element being arranged at the shell surface of said large rotating mineral and metallurgical grinding mill;
  • said at least one transmitting coil element of said transmitting unit is arranged close to the said at least one receiving coil element at the shell surface of said large rotating mineral and metallurgical grinding mill.
  • said at least one receiving coil element comprises one receiving coil element.
  • said at least one receiving coil element comprises several receiving coil elements.
  • said at least one receiving coil element is arranged on a portion of the entire shell surface around the rotating mineral and metallurgical grinding mill.
  • said at least one receiving coil element for receiving inductive charge is arranged on the entire shell surface around the rotating mineral and metallurgical grinding mill.
  • said at least one receiving coil element is arranged on one end of said shell surface.
  • said at least one transmitting coil element and/or the transmitting unit is/are installed at the drum bearing housing.
  • said at least one transmitting coil element of said transmitting unit comprises one transmitting coil element.
  • said at least one transmitting coil element of said transmitting unit comprises several transmitting coil elements.
  • said arrangement comprises an external power unit coupled to said transmitting unit.
  • said arrangement provides power to a sensor arrangement on a large grinding mill drum.
  • Figure 1 shows a perspective view of a prior art sensor arrangement on a large rotating mineral and metallurgical grinding mill
  • Figure 2 shows a perspective view of a grinding mill drum having one embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention
  • Figure 3 shows a perspective view of a grinding mill drum having another embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention
  • Figure 4 shows one embodiment of a transmitting unit of an ar- rangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention
  • Figure 5 shows another embodiment of a transmitting unit of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention
  • Figure 6 shows a side view of a large rotating mineral and metallurgical grinding mill having an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention
  • Figure 7 shows a perspective view of a grinding mill drum having a third embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the present invention relates to a method and an arrangement for providing power to a sensor arrangement on a large rotating mineral and met- allurgical grinding mill.
  • the presented arrangement for providing power to a sensor arrangement comprises at least one receiving coil element for receiving inductive charge, said at least one receiving coil element being arranged at the shell surface of the large rotating mineral and met- allurgical grinding mill; and a transmitting unit being arranged outside said large rotating mineral and metallurgical grinding mill, said transmitting unit having at least one transmitting coil element for transmitting inductive charge to said at least one receiving coil element, said at least one transmitting coil element of said transmitting unit being arranged close to the said at least one re- DCving coil element at the shell surface of the large rotating mineral and metallurgical grinding mill.
  • FIG. 2 shows a perspective view of a grinding mill drum having one embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the presented grinding mill has a drum shell surface marked with a reference number 5.
  • a sensor arrangement 6 according to the present invention.
  • the presented embodiment of an arrangement for providing power to a sensor arrangement comprises one receiving coil element 7 for receiving inductive charge, said receiving coil element 7 being arranged on the grinding mill drum shell surface 5.
  • the receiving coil element 7 on the grinding mill drum shell surface 5 is arranged for receiving inductive charge from an at least one transmitting coil element arranged outside said large rotating mineral and metallurgical grinding mill.
  • FIG. 3 shows a perspective view of a grinding mill drum having another embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the presented grinding mill has a drum shell surface marked with a reference number 5.
  • a sensor arrangement 6 according to the present invention.
  • the presented another embodiment of an arrangement for providing power to a sensor arrangement according to the present invention comprises several receiving coil elements 8-1 1 for receiving inductive charge, said receiving coil elements 8-1 1 being arranged on the grinding mill drum shell surface 5.
  • the receiving coil elements 8-1 1 on the grinding mill drum shell surface 5 are arranged for receiving inductive charge from an at least one transmitting coil element arranged outside said large rotating mineral and metallurgical grinding mill.
  • the presented at least one receiving coil element 7-1 1 for receiving inductive charge may be arranged on the entire shell surface 5 around the rotating mineral and metallurgical grinding mill, or arranged only on a portion of the entire shell surface 5 around the rotating mineral and metallurgical grinding mill.
  • Figure 4 shows one embodiment of a transmitting unit of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the presented embodiment of a transmitting unit of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention is marked with a reference number 12.
  • the transmitting unit 12 comprises one transmitting coil element 13 for transmitting inductive charge to said at least one receiving coil element being arranged at the shell surface of the large rotating mineral and metallurgical grinding mill.
  • Figure 5 shows another embodiment of a transmitting unit of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the presented another embodiment of a transmitting unit of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention is marked with a reference number 14.
  • the transmitting unit 14 comprises several transmitting coil elements 15-18 for transmitting inductive charge to said at least one receiving coil element being arranged at the shell surface of the large rotating mineral and metallurgical grinding mill.
  • Figure 6 shows a side view of a large rotating mineral and metallurgical grinding mill having an arrangement for providing power to a sensor ar- rangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the large rotating mineral and metallurgical grinding mill shown in Figure 6 has a shell surface marked with a reference number 19. On said apparatus shell surface 19 there is arranged a sensor arrangement 20 according to the present invention.
  • the presented arrangement for providing power to the said sensor arrangement 20 comprises at least one receiving coil element 21 for receiving inductive charge, said at least one receiving coil element 21 being arranged on the apparatus shell surface 19; and a transmitting unit 22 for transmitting inductive charge, said transmitting unit 22 being arranged outside said large ro- tating mineral and metallurgical grinding mill and having at least one transmitting coil element for transmitting inductive charge to said at least one receiving coil element 21 .
  • the presented arrangement for providing power to the said sensor arrangement 20 may also comprise an external power unit 23 coupled to said transmitting unit 22.
  • the at least one receiving coil element 21 on the apparatus shell surface 19 are arranged for receiving inductive charge from an at least one transmitting coil element arranged outside said large rotating mineral and metallurgical grinding mill. Respectively the at least one transmitting coil element of said transmitting unit 22 are arranged for transmitting inductive charge to said at least one receiving coil element 21 . Furthermore, the at least one transmitting coil element of said transmitting unit 22 are arranged close to the said at least one receiving coil element 21 at the shell surface of the large rotating mineral and metallurgical grinding mill.
  • the arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill provides power to the sensor arrangement 20 on the apparatus shell surface 19 using a specific induction charging apparatus.
  • Inductive charging uses an electromagnetic field to transfer energy between the at least one transmitting coil element of said transmitting unit 22 and the at least one receiving coil element 21 . Energy is transferred through an inductive coupling to the at least one receiving coil element 21 , which can then use that energy to function and to charge batteries.
  • an alternating electromagnetic field is created to the at least one transmitting coil element of said transmitting unit 22, and the at least one receiving coil element 21 in the large rotating min- eral and metallurgical grinding mill takes power from the electromagnetic field and converts said power back into electrical current for functioning and for charging the batteries of said sensor arrangement 20.
  • Greater distances between the at least one transmitting coil element of said transmitting unit 22 and the at least one receiving coil element 21 can be used when the inductive charging system uses resonant inductive coupling.
  • the inductive power transfer is done either over the whole rotation cycle of the large rotating mineral and metallurgical grinding mill or during a portion of said rotation cycle.
  • Figure 7 shows a perspective view of a grinding mill drum having a third embodiment of an arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill according to the present invention.
  • the presented grinding mill has a drum shell surface marked with a reference number 5.
  • a sensor arrangement 25 On one end 24 of the grinding mill drum shell surface 5 there is arranged a sensor arrangement 25 according to the present invention.
  • the presented third embodiment of an arrangement for providing power to a sensor arrangement according to the present invention also comprises one receiving coil element 26 for receiving inductive charge, said receiving coil element 26 being arranged on one end 24 of the grinding mill drum shell surface 5.
  • the receiving coil element 26 on one end 24 of the grinding mill drum shell surface 5 is arranged for receiving inductive charge from an at least one transmitting coil element arranged outside said large rotating mineral and metallurgical grinding mill.
  • Said at least one transmitting coil element and/or the transmitting unit can be installed at the drum bearing housing.
  • the solution according to the present invention provides power to the sensor arrangement on large rotating mineral and metallurgical grinding mill sufficiently and reliably and for the entire runtime of the large rotating mineral and metallurgical grinding mill.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

La présente invention concerne le domaine des procédés minéralurgiques et métallurgiques, et plus particulièrement elle concerne un procédé et un agencement pour fournir de l'énergie à un agencement détecteur sur un grand broyeur rotatif métallurgique et minéralurgique, et un agencement détecteur sur un grand broyeur rotatif métallurgique et minéralurgique. Un agencement pour fournir de l'énergie à un agencement détecteur (6), (20), (25) selon la présente invention comprend une unité de transmission (12), (14), (22) ménagée à l'extérieur dudit grand broyeur rotatif métallurgique et minéralurgique, ladite unité de transmission (12), (14), (22) ayant au moins un élément bobine de transmission (13), (15-18) pour créer un champ électromagnétique alternatif au niveau dudit élément bobine de transmission (13), (15-18) pour transmettre une charge inductive à au moins un élément bobine de réception (7-11), (21), (26) ; et au moins un élément bobine de réception (7-11), (21), (26) pour prise de puissance par réception de charge inductive, ledit élément bobine de réception, (7-11), (21) (26) étant agencé au niveau de la surface de coque (5), (19), (24) dudit grand broyeur rotatif métallurgique et minéralurgique, ledit élément bobine de transmission (13), (15-18) de ladite unité de transmission (12), (14), (22) étant agencé à proximité dudit élément bobine de réception (7-11), (21), (26) au niveau de la surface de coque (5), (19), (24) dudit grand broyeur rotatif métallurgique et minéralurgique.
PCT/FI2015/050287 2014-04-28 2015-04-27 Procédé et agencement pour fournir de l'énergie à un agencement détecteur sur un tube broyeur WO2015166139A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20145393A FI20145393A (fi) 2014-04-28 2014-04-28 Menetelmä ja järjestely tehon järjestämiseksi anturijärjestelylle suuressa pyörivässä mineraali- ja metallurgian prosessilaitteessa, ja anturijärjestely suuressa pyörivässä mineraali- ja metallurgian prosessilaitteessa
FI20145393 2014-04-28

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WO2015166139A1 true WO2015166139A1 (fr) 2015-11-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021045720A1 (fr) * 2019-09-02 2021-03-11 Shumway Sheldon Dean Système de commande de paramètres d'un broyeur
CN115121334A (zh) * 2022-07-04 2022-09-30 广东技术师范大学 一种持续监视研磨介质磨损余量的研磨装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360174A (en) 1991-07-12 1994-11-01 Skega Ab Arrangement for registering the instant grinding charge volume of a grinding drum
DE19933995A1 (de) * 1999-07-20 2001-03-01 Kima Ges Fuer Echtzeitsysteme Füllstandsmessung für Kugelmühlen
WO2004004908A1 (fr) * 2002-07-05 2004-01-15 Metso Minerals (Tampere) Oy Procede et appareil de mesure et de reglage des parametres d'un broyeur
US20040255680A1 (en) * 2003-01-31 2004-12-23 Ortega Luis Alberto Magne System to determine and analyze the dynamic internal load in revolving mills, for mineral grinding
US6874364B1 (en) 1999-07-09 2005-04-05 Commonwealth Scientific And Industrial Research Organisation System for monitoring mechanical waves from a moving machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360174A (en) 1991-07-12 1994-11-01 Skega Ab Arrangement for registering the instant grinding charge volume of a grinding drum
US6874364B1 (en) 1999-07-09 2005-04-05 Commonwealth Scientific And Industrial Research Organisation System for monitoring mechanical waves from a moving machine
DE19933995A1 (de) * 1999-07-20 2001-03-01 Kima Ges Fuer Echtzeitsysteme Füllstandsmessung für Kugelmühlen
WO2004004908A1 (fr) * 2002-07-05 2004-01-15 Metso Minerals (Tampere) Oy Procede et appareil de mesure et de reglage des parametres d'un broyeur
US20040255680A1 (en) * 2003-01-31 2004-12-23 Ortega Luis Alberto Magne System to determine and analyze the dynamic internal load in revolving mills, for mineral grinding

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021045720A1 (fr) * 2019-09-02 2021-03-11 Shumway Sheldon Dean Système de commande de paramètres d'un broyeur
US20220297133A1 (en) * 2019-09-02 2022-09-22 Sheldon Dean Shumway System to Control Parameters of a Mill
US11794193B2 (en) * 2019-09-02 2023-10-24 Sheldon Dean Shumway System to control parameters of a mill
CN115121334A (zh) * 2022-07-04 2022-09-30 广东技术师范大学 一种持续监视研磨介质磨损余量的研磨装置
CN115121334B (zh) * 2022-07-04 2023-04-14 广东技术师范大学 一种持续监视研磨介质磨损余量的研磨装置

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