WO2015049051A1 - Installation de broyage et procédé de production de fines de minerai - Google Patents

Installation de broyage et procédé de production de fines de minerai Download PDF

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Publication number
WO2015049051A1
WO2015049051A1 PCT/EP2014/002673 EP2014002673W WO2015049051A1 WO 2015049051 A1 WO2015049051 A1 WO 2015049051A1 EP 2014002673 W EP2014002673 W EP 2014002673W WO 2015049051 A1 WO2015049051 A1 WO 2015049051A1
Authority
WO
WIPO (PCT)
Prior art keywords
stage
outlet
grinding
screening
crushing
Prior art date
Application number
PCT/EP2014/002673
Other languages
German (de)
English (en)
Inventor
Ulrich Voss
Richard Erpelding
Torsten Loohß
Reinhard Giesemann
Ludwig KÖNNING
Sven Hauschildt
Original Assignee
Thyssenkrupp Industrial Solutions Ag
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 Thyssenkrupp Industrial Solutions Ag filed Critical Thyssenkrupp Industrial Solutions Ag
Publication of WO2015049051A1 publication Critical patent/WO2015049051A1/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
    • B02C21/00—Disintegrating plant with or without drying of the material
    • 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

Definitions

  • the invention relates to a crushing plant and a method for producing a fine ore product.
  • the Gutbettzerkleintation is still for the crushing of brittle regrind, such as cement clinker or ore, a preferred crushing process, which is characterized by high efficiency.
  • brittle regrind such as cement clinker or ore
  • comminution pressures of at least 1 N / mm 2 acting.
  • Good-bed roller mills are also used for ultrafine grinding, many circulation grinding plants are used. In order to increase the efficiency of the good bed roller mill, the maximum grain size of the feed material has been limited in an upstream crushing stage in conjunction with a screening device.
  • the Siebunterkorn was supplied to the high-grade bed mill, which has a grain size of 50 mm for ore material, for example. Furthermore, the high-grade bed mill was operated together with a screening device, wherein the Sieboberkorn was returned to the Goodbettwalzenmühle until the millbase is comminuted to the desired particle size.
  • the invention is based on the object to reduce the cost of producing a fine ore product.
  • the crushing plant according to the invention for producing a fine ore product consists essentially of
  • CONFIRMATION COPY a. a first screening stage with at least one sieve bottom, at least one oversize outlet and at least one sub-grain outlet, b. a crushing stage connected to the first-stage over-grain outlet and having at least one crushing stage outlet, c. a first milling stage having at least one good bed roller mill having at least one inlet communicating with the first stage screening sub-grain outlet and crushing stage outlet, two counter-rotating rolls and at least one outlet therebetween, forming a first grinding nip; a second screening stage having at least one sieve tray, at least one inlet communicating with the outlet of the first grinding stage, at least one subgrain outlet and at least one oversize outlet, and e.
  • the first screening stage is designed for an oversize of at least 1.5 times the first nip.
  • the inventive method for producing a fine ore product is characterized in that a. an ore-containing starting material is screened in a first screening stage with at least one sieve bottom into an oversize and an undersize, b. the oversized grain of the first screening stage is comminuted in a subsequent crushing stage, c. the oversized grain comminuted in the crushing stage and the undersized grain of the first screening stage are ground together in a first grinding stage between two rolls driven in opposite directions and forming a first grinding gap between them, d. the material ground in the first grinding stage is fed to a second screening stage with at least one sieve bottom and sieved there into an oversize and an undersize, the undersized matter being discharged and e.
  • the oversize grain is ground in a second grinding stage between two rollers driven in opposite directions and forming a second grinding gap between them and a resulting comminuted product is likewise fed to the second screening stage, f. wherein the first screening stage is set to an undersize of at least 1.5 times the first nip.
  • the solution according to the invention is characterized in particular by the fact that the crushing stage outlet is connected to the inlet of the first good-bed roller mill and thus the breaking stage is not operated in circulation with the first screening stage.
  • the avoidance of circulation means that transport devices between the breaking stage and the first screening stage can be avoided.
  • this results in an increased proportion of coarse material in the feedstock of the first good bed roller mill, It thus takes place a shift in the transport and crushing energy from the crushing step for Gutbettwalzenmühle instead.
  • this measure results in lower investment costs, lower operating costs and space savings, since in particular no conveyor belt systems for the return to the first screening stage are required.
  • the first screening stage is designed for an oversize of at least 1.5 times the first nip, preferably in the range> 80 mm, most preferably in the range> 120 mm.
  • the feed material for the first good bed roller mill is therefore considerably coarser, which is due to the fact that the Reduction work is increasingly shifted from the crushing stage to the first good bed roller mill. Since a good bed roller mill compared to a normal crushing stage, such as cone crushers, can be operated much more energy efficient, thereby significant energy savings and a reduction of costs can be achieved.
  • a second good bed roller mill is connected downstream, the feed material of which has already passed the first good bed roller mill and thus already pre-shredded accordingly.
  • the second good bed roller mill is adjusted with its operating parameters to the correspondingly finer feed material in order to produce the desired product fineness of, for example, ⁇ 20 mm, preferably ⁇ 10 mm.
  • the first screening stage is designed for an oversize of at least twice the first nip.
  • a good bed roller mill with a diameter of 2.4 m, and a nip of 60 mm results in an oversize of 120 mm.
  • the second screening stage may be designed in particular for an undersize of less than 1/3 of the second nip.
  • the screened stream then has, for example, a particle size ⁇ 20 mm, preferably ⁇ 10 mm.
  • An aggregate for breaking up the comminuted fine ore product into the finished product expediently follows the subcompressor of the second screening stage.
  • the outlet of the first good bed roller mill and the outlet of the second good bed roller mill can be connected to the inlet of the second screening stage by at least one common conveyor.
  • the Brechcutnauslass and the Unterkornauslass the first screening stage are connected via at least one common conveyor with the inlet of the first Goodbettwalzenmühle.
  • the first good bed roll mill is operated at a crushing pressure which is less than the crushing pressure of the second high bed mill mill.
  • the first good bed roller mill can be operated with a comminution pressure of 2 +/- 1 N / mm 2 and the second good bed roller mill with a comminution pressure of 4 +/- 1.5 N / mm 2 .
  • the drawing shows a schematic representation of a crushing plant according to the invention for producing a fine ore product.
  • the comminution plant for producing a fine ore product essentially consists of a first screening stage 1, a crushing stage 2, a first grinding stage 3, a second screening stage 4 and a second grinding stage 5.
  • An ore material 6 to be comminuted is drawn off a stockpile 7 and passes through first conveyors 8 in the first screening stage 1.
  • In the illustrated embodiment consists of two parallel connected sieve plates la, lb with upstream latches lc, ld.
  • the ore material 6 to be comminuted is first of all split up over a material diverter le onto the two intermediate stores 1 c, 1 d, before it is fed to the two sieve trays 1 c, 1 d.
  • the first screening stage 1 accordingly has a first and a second Mechanismkomauslass lf or lg and a first and a second Unterkornauslass la, Ii.
  • the oversize 6a enters the crushing stage 2, which in turn is equipped with two crushing units 2a, 2b connected in parallel.
  • the oversize 6a comminuted in the crushing units 2a, 2b is fed, together with the lower grain 6b of the first screening stage 1, via second conveyors 9, to two intermediate buffers 10a, 10b connected in parallel, from where the material passes into two parallel-bedded good-bed roll mills 3a, 3b of the first grinding stage ,
  • the inlets 3 c 3 d of the two roll mills 3 a, 3 b are formed by feed stitches, which above a first grinding gap 3e are arranged, which is formed by two counter-rotating rollers 3f, 3g.
  • the inlet 3c or 3d of the first grinding stage 3 is thus connected to the Unterkornaus lass lh or Ii of the first screening stage 1 and the Brechmonynauslass 2c and 2d of the breaking stage 2 in combination.
  • the ore material which is further comminuted in the first grinding stage 3 is fed via third conveying means 11 to an inlet 4a of the second screening stage 4.
  • the second screening stage 4 has a plurality of mutually parallel sieve trays 4b, which in turn are fed via a plurality of temporary storage 4c.
  • the oversize of the second screening stage 4 is discharged via Studentskornaus outlets 4 e and fed via fourth conveyors 12 of the second grinding stage 5, which in turn are intermediate memory 13 a, 13 b connected upstream.
  • the second grinding stage 5 in turn consists of two parallel connected 5a, 5b whose inlets 5c, 5d are formed by feed shafts 5c, 5d.
  • the good bed roller mills are in turn formed with two rollers 5f, 5g which are driven in opposite directions and form a second grinding gap 5e between them.
  • the outlets 3h of the first grinding stage and outlets 5h of the second grinding stage 5 transfer the comminuted material to the shared third conveying devices 11.
  • a first peculiarity of the crushing plant shown is that the crushing stage 2 is not operated in circulation, that is, the shredded in the Brechtmark material is not supplied to a viewing stage, but passes together with the lower grain of the first screening stage 1 without further crushing the first grinding stage 3 , Furthermore, the first screening stage is designed with respect to the width of the first grinding nip of the good-bed roller mills 3a, 3b of the first grinding stage 2 such that an oversize of at least 1.5 times the first nip 3e is formed.
  • the first screening stage results for the first screening stage an Automatkomkorn of at least 80 mm, preferably 120 mm, which approximately equal to 2 times the first nip.
  • the material to be applied to the second milling stage is already significantly finer, so that the proportion of comminuted material comminution in the high-pressure bed mill of the second milling stage is substantially higher.
  • the first bed mill bed granulator mills will be operated at a comminution pressure lower than the comminution bed pressure of the second bed mill bed mill mill.
  • the crushing pressure of the good bed roller mills 3a, 3b is 2 +/- 1 N / mm 2
  • the crushing pressure of the good bed roller mills 5a, 5b of the second grinding stage 5 can be set to 4 +/- 1, 5 N / mm 2 .
  • the decision as to which maximum grain size is to be produced for the undersize of the first screening stage 1 will preferably be made dependent on the hardness of the starting material. By setting the undersize in the first screening stage, it is determined which amount of oversize grain enters the crushing stage and thereby also determines the ratio of the energy expenditure in the crushing stage in comparison to the energy expenditure in the first milling stage. With a harder starting material you will choose a smaller undersize.

Landscapes

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

Abstract

L'invention concerne une installation de broyage, destinée à la production de fines de minerai, constituée essentiellement par a) un premier étage de tamisage comprenant au moins un fond de tamis, au moins une sortie de déclassés supérieurs et au moins une sortie de passants, b) un étage de concassage qui est relié à la sortie de déclassés supérieurs du premier étage de tamisage et qui comporte au moins une sortie d'étage de concassage, c) un premier étage de broyage comprenant au moins un broyeur à cylindres à lit de matière comprenant au moins une entrée qui est en liaison avec la sortie de passants du premier étage de tamisage et la sortie d'étage de concassage, deux cylindres entraînés dans des sens contraires et formant entre eux une première fente de broyage et au moins une sortie, d) un second étage de tamisage comprenant au moins un fond de tamis, au moins une entrée qui est en liaison avec la sortie du premier étage de broyage, au moins une sortie de passants et au moins une sortie de déclassés supérieurs, et e) au moins un second étage de broyage comprenant au moins un broyeur à cylindres à lit de matière, comprenant au moins une entrée qui est en liaison avec la sortie de déclassés supérieurs du second étage de tamisage, deux cylindres entraînés dans des sens contraires et formant entre eux une seconde fente de broyage et au moins une sortie, qui est en liaison avec l'entrée du second étage de tamisage. Selon l'invention, f) le premier étage de tamisage est conçu pour donner un déclassé supérieur au moins égal à 1,5 fois la première fente entre cylindres.
PCT/EP2014/002673 2013-10-01 2014-10-01 Installation de broyage et procédé de production de fines de minerai WO2015049051A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013110881.4A DE102013110881B4 (de) 2013-10-01 2013-10-01 Zerkleinerungsanlage und Verfahren zur Erzeugung eines Feinerzproduktes
DE102013110881.4 2013-10-01

Publications (1)

Publication Number Publication Date
WO2015049051A1 true WO2015049051A1 (fr) 2015-04-09

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PCT/EP2014/002673 WO2015049051A1 (fr) 2013-10-01 2014-10-01 Installation de broyage et procédé de production de fines de minerai

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DE (1) DE102013110881B4 (fr)
WO (1) WO2015049051A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106035981A (zh) * 2016-07-18 2016-10-26 山东省阳信万信生物制品开发有限公司 一种植物蛋白提取装置
CN112619855A (zh) * 2020-12-25 2021-04-09 日昌升建筑新材料设计研究院有限公司 一种干法砂石联合生产工艺
CN114471850A (zh) * 2022-02-08 2022-05-13 西南医科大学附属医院 一种中药球磨机及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106914308A (zh) * 2017-05-02 2017-07-04 苍南博雅科技有限公司 一种用于导电银胶制备的研磨设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738228A1 (de) * 1997-09-02 1999-03-04 Kloeckner Humboldt Wedag Verfahren zur Kreislaufmahlung spröden Mahlgutes und Mahlanlage hierzu
DE102004050720A1 (de) * 2004-10-19 2006-04-20 Tu Bergakademie Freiberg Verfahren zur Zerkleinerung im Gutbett
WO2010072276A1 (fr) * 2008-12-23 2010-07-01 Maschinenfabrik Köppern Gmbh & Co. Kg Procédé et dispositif pour désagréger de la matière minérale à broyer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302176A1 (de) 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738228A1 (de) * 1997-09-02 1999-03-04 Kloeckner Humboldt Wedag Verfahren zur Kreislaufmahlung spröden Mahlgutes und Mahlanlage hierzu
DE102004050720A1 (de) * 2004-10-19 2006-04-20 Tu Bergakademie Freiberg Verfahren zur Zerkleinerung im Gutbett
WO2010072276A1 (fr) * 2008-12-23 2010-07-01 Maschinenfabrik Köppern Gmbh & Co. Kg Procédé et dispositif pour désagréger de la matière minérale à broyer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106035981A (zh) * 2016-07-18 2016-10-26 山东省阳信万信生物制品开发有限公司 一种植物蛋白提取装置
CN106035981B (zh) * 2016-07-18 2024-04-12 山东省阳信万信生物制品开发有限公司 一种植物蛋白提取装置
CN112619855A (zh) * 2020-12-25 2021-04-09 日昌升建筑新材料设计研究院有限公司 一种干法砂石联合生产工艺
CN114471850A (zh) * 2022-02-08 2022-05-13 西南医科大学附属医院 一种中药球磨机及其使用方法

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DE102013110881A1 (de) 2015-04-02
DE102013110881B4 (de) 2016-08-04

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