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EP2769769A1 - Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage - Google Patents

Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage Download PDF

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Publication number
EP2769769A1
EP2769769A1 EP13156417.1A EP13156417A EP2769769A1 EP 2769769 A1 EP2769769 A1 EP 2769769A1 EP 13156417 A EP13156417 A EP 13156417A EP 2769769 A1 EP2769769 A1 EP 2769769A1
Authority
EP
European Patent Office
Prior art keywords
der
grinder
parameter
des
mahleinrichtung
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Withdrawn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
EP13156417.1A
Other languages
German (de)
English (en)
Inventor
Andreas Lekscha
Bernd Zehentbauer
Victor Seleznev
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP13156417.1A priority Critical patent/EP2769769A1/fr
Priority to PCT/EP2014/052132 priority patent/WO2014127989A1/fr
Publication of EP2769769A1 publication Critical patent/EP2769769A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

Definitions

  • the invention relates to a method for controlling and / or regulating a grinding plant and a grinding plant.
  • Milling is a mechanical process whose task is to reduce the particle sizes of solids by overcoming the binding forces in the starting particles.
  • the grinding process is carried out in a closed grinding circle.
  • a grinding plant also comprises a separating device, such as a classifier, with which the ground material is separated, ie classified, depending on the grain size or grain size.
  • a separating device such as a classifier
  • sufficiently ground particles (finished grade) leave the separator over the overflow, the insufficiently ground particles in the lower run. The latter are returned to the grinder and thus added to the grinding process again.
  • the grinding plant comprises a separator in the form of a magnetic separator. This is designed to separate ferromagnetic parts of the overflow of the separator leaving ground material from non-magnetic.
  • Grinders without speed control are predominantly used in the existing grinding plants. At present, the pulping process is used without speed control of the grinder, which significantly reduces the effectiveness of the grinding processes.
  • the milling process depends on a variety of factors (grindability of the ore, drum speed, volume of drum filling with orb-ball load, ratio of solid to liquid in the grinder, state of wear of the balls and the lining, etc.), which are in real time in a sufficiently broad range.
  • the task of process control at constant speed is to stabilize the process variables (raw-material throughput, amount of circulating sands, volume of drum loading, percentage solids in the outlet of the grinder, solid or finished-class proportion in the outlet of the classifier, outlet volume).
  • the first object is achieved by a method for controlling and / or regulating a grinding plant with the features of claim 1.
  • a grinding plant comprises a variable speed grinder for grinding a substance, a separator for classifying the ground material and a separator downstream separator.
  • the second object is achieved by a grinding plant with the features of claim 10.
  • a grinding plant on a milling device for grinding a substance and a separator for classifying the ground material and a control / regulating unit in which a software for performing the inventive Method is implemented.
  • FIG. 1 shows a grinding plant 2, with a substance to be ground S, such as iron ore containing rock is ground and classified.
  • the material S to be ground is first fed to a variable-speed grinder 4 and ground.
  • the grinder is driven by an output 5.
  • the milled substance S enters a separating device 6 as a classifier, in which the milled substance S is separated depending on the grain size or grain size, that is classified.
  • the separator is driven by a motor 7.
  • sufficiently ground particles of the substance S leave the separating device 6 via the overflow 8, the particles which have not been ground sufficiently leave the separating device 6 through the underflow 10 and are returned to the grinding device 4.
  • the milling device 4 leaving the overflow 8 particles are then fed to a separator 12, in the embodiment of a magnetic separator. This is designed to separate ferromagnetic parts of the ground substance S from non-magnetic.
  • the ferromagnetic parts leave the separator 12 as an intermediate product at the exit 14.
  • the non-ferromagnetic parts leave the separator 12 in its tailing 16.
  • the grinding plant 2 comprises measuring devices for detecting measured variables 17, which are used for controlling / regulating the grinding plant 2. Specifically, this involves a measuring device 18 for detecting the circulation load C, a measuring device 20 for detecting the power of the drive of the separating device 6 Icl, a measuring device 22 for detecting the water consumption of the separating device 6 Gvk, a measuring device 24 for detecting the finished-grade content the grinder 4 Rm, Sm, a measuring device 26 for detecting the finished class content at the overflow 8 of the separator 6 Scl, a measuring device 28 for detecting the inverter frequency f of the drive 5 of the grinder 4, a measuring device 30 for detecting the speed ndv of the grinder 4, a Measuring device 32 for detecting the power Pdv of the drive 5 of the grinder 4, a measuring device 34 for detecting the filling volume V of the grinder 4, a measuring device 36 for detecting the filling volume F of the grinder 4, a measuring device 38 for detecting the rotational speed nm of the grinder 4,
  • the grinding plant 2 includes various controllers that regulate the grinding process. It is a controller 44 for feeding the grinder 4 with the material to be ground S, a controller 46 for regulating the ratio liquid / solid in the grinder 4 W / F, a controller 48 for controlling the speed of the grinder. 4 , a controller 50 for controlling the computing class of the overflow 8 of the separator 6.
  • the measured variables 17 are detected by a control unit 51. This calculates on the basis of the measured variables control variables 52, which forwards them to the controllers mentioned above.
  • dimensionless power factor S dimensionless power factor
  • relative speed of the grinder 4 no liquid-solid ratio W / F
  • energy consumption taking into account the motor power E
  • proportion of finished class in the outlet of the grinder 4 Sm and separator 6 Scl circulation load C for "Grinder 4 - separator 6" and their derivatives.
  • the control / regulation of the grinding plant 2 takes place by means of a control circuit of the relative speed of the grinder Vrel as a function of the optimum net power (of the dimensionless power factor S).
  • the regulation of the optimum motor power takes place in the predetermined range of the relative speed of the grinder 4 and predetermined range of the filling of the grinder 4 with Roherz.
  • the control unit 51 receives and calculates the measured quantities 17 from the raw-mass weight measuring devices Qr, water consumption of the grinder G VM , water consumption of the separator 4 Gvk, load volume of the grinder 4, power of the drive 5 of the grinder 4 Pdv, currents of the spirals 1 -2 of the separator 6 Icl, outlet density of Separator 6 Rcl, density of pulp outlet of grinder 4 Rm, sand circulation C, mass of sands in circuit "Grinder 4 - separator 6" Sp, product grain in the separator outlet for computational class Scl *, speed of the grinder 4 nm, speed of the drive 5 nd, Inverter frequency f, ore to water ratio Qr / Qv, liquid / solid matter ratio in the grinder 4 W / F, relative speed of the grinder 4 of the critical Vrel, derivations of the dependencies.
  • Control circuit for the volume of internal milling device filling of the grinding device 4 with orbital ball load with respect to raw heart throughput, water flow in the grinder and related motor power at speed control of the grinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP13156417.1A 2013-02-22 2013-02-22 Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage Withdrawn EP2769769A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13156417.1A EP2769769A1 (fr) 2013-02-22 2013-02-22 Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage
PCT/EP2014/052132 WO2014127989A1 (fr) 2013-02-22 2014-02-04 Procédé pour la commande et/ou la régulation d'une installation de broyage et installation de broyage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13156417.1A EP2769769A1 (fr) 2013-02-22 2013-02-22 Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage

Publications (1)

Publication Number Publication Date
EP2769769A1 true EP2769769A1 (fr) 2014-08-27

Family

ID=47757402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13156417.1A Withdrawn EP2769769A1 (fr) 2013-02-22 2013-02-22 Procédé de commande et/ou de réglage d'une installation de broyage ainsi que l'installation de broyage

Country Status (2)

Country Link
EP (1) EP2769769A1 (fr)
WO (1) WO2014127989A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116140039B (zh) * 2023-04-23 2023-07-18 中铁工程服务有限公司 一种机制砂流量调节方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179345A (en) * 1963-07-29 1965-04-20 United States Steel Corp Method and apparatus for controlling a grinding mill
DE1940200A1 (de) * 1968-10-24 1971-02-25 Vyzk Ustav Stavebnich Hmot V B Verfahren zum selbsttaetigen Regeln einer Umlaufmuehle und Anordnung zum Ausfuehren dieses Verfahrens
DE3012653A1 (de) * 1980-04-01 1981-10-08 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und vorrichtung zur anpassung der von einer mahltrocknungsanlage insbesondere fuer brennbares gut erzeugten menge von fertiggut an die entnahmemenge eines verbrauchers
WO2006117017A1 (fr) * 2005-04-28 2006-11-09 Akw Apparate + Verfahren Gmbh Procede et dispositif d'utilisation d'un moulin a l'eau
DE102010012620A1 (de) * 2010-03-24 2011-09-29 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Mühle
EP2412418A1 (fr) * 2010-07-27 2012-02-01 Siemens Aktiengesellschaft Procédé et dispositif destinés à la commande et/ou au réglage d'une installation de filtration

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179345A (en) * 1963-07-29 1965-04-20 United States Steel Corp Method and apparatus for controlling a grinding mill
DE1940200A1 (de) * 1968-10-24 1971-02-25 Vyzk Ustav Stavebnich Hmot V B Verfahren zum selbsttaetigen Regeln einer Umlaufmuehle und Anordnung zum Ausfuehren dieses Verfahrens
DE3012653A1 (de) * 1980-04-01 1981-10-08 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und vorrichtung zur anpassung der von einer mahltrocknungsanlage insbesondere fuer brennbares gut erzeugten menge von fertiggut an die entnahmemenge eines verbrauchers
WO2006117017A1 (fr) * 2005-04-28 2006-11-09 Akw Apparate + Verfahren Gmbh Procede et dispositif d'utilisation d'un moulin a l'eau
DE102010012620A1 (de) * 2010-03-24 2011-09-29 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Mühle
EP2412418A1 (fr) * 2010-07-27 2012-02-01 Siemens Aktiengesellschaft Procédé et dispositif destinés à la commande et/ou au réglage d'une installation de filtration

Also Published As

Publication number Publication date
WO2014127989A1 (fr) 2014-08-28

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