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WO2002038275A1 - Procede et installation permettant la production de matiere fine - Google Patents

Procede et installation permettant la production de matiere fine Download PDF

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Publication number
WO2002038275A1
WO2002038275A1 PCT/EP2001/013075 EP0113075W WO0238275A1 WO 2002038275 A1 WO2002038275 A1 WO 2002038275A1 EP 0113075 W EP0113075 W EP 0113075W WO 0238275 A1 WO0238275 A1 WO 0238275A1
Authority
WO
WIPO (PCT)
Prior art keywords
classifier
mill
coarse
inlet
outlet
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.)
Ceased
Application number
PCT/EP2001/013075
Other languages
German (de)
English (en)
Inventor
Hubert Eickholt
Ludger Schulte
Franz-Josef Zurhove
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
Krupp Polysius AG
Polysius 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7663100&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2002038275(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Krupp Polysius AG, Polysius AG filed Critical Krupp Polysius AG
Priority to AU2002217019A priority Critical patent/AU2002217019A1/en
Publication of WO2002038275A1 publication Critical patent/WO2002038275A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B02C17/1845—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone with return of oversize material to crushing 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
    • 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

Definitions

  • the invention relates to a method and a plant for the production of fine material with a grinding circuit consisting of classifier and mill.
  • a material to be processed for example cement clinker
  • the material that has been given to the sifter is separated into coarse and fine material, the coarse material is sent to the mill and the material that has been comminuted in the mill is given to the sifter.
  • the fines are derived as finished goods from the grinding circle.
  • the goods that have not yet been sufficiently shredded may be passed through the mill in several rounds.
  • the product properties are secondary to the operational settings of the classifier (air speed in the classifying zone, speed of the rotor of the classifier, position of the air baffles at the point where the classifying air enters the classifying zone) and primarily by the control of the mill Class is influenced by the amount of material in circulation.
  • the mill circulation and the classifier circulation are coupled.
  • the invention is based on the object of specifying a method and a plant for producing fine goods with which the efficiency can be further increased.
  • the properties of the fine material of the sifter (product) can be set in a targeted manner by decoupling the mill circulation and classifier circulation by means of recirculation from the coarse sieve to the classifier.
  • the process according to the invention for the production of fine material with a grinding circuit consisting of a classifier and a mill provides that a material to be processed is fed to the grinding circuit and furthermore the material given to the classifier is separated into coarse material and fine material becomes.
  • the coarse material leaving the classifier is again divided, part of the coarse material being sent to the mill and another part of the coarse material being recirculated to the classifier.
  • the material crushed in the mill is also given to the classifier.
  • the plant according to the invention for the production of fine material with a grinding circuit consisting of classifier and mill provides that the classifier has at least one classifier inlet, at least one coarse material outlet and at least one classifier outlet, the coarse material outlet of the classifier with an inlet of the mill and an outlet of the mill communicates with the classifier inlet and furthermore means are provided for feeding a material to be processed to the grinding circuit. Furthermore, a distributor is provided with an inlet and a first and a second outlet, the inlet with the coarse material outlet of the classifier and the first outlet with the inlet of the mill for feeding part of the coarse material to the mill and the second outlet with the classifier inlet for recirculation another part of the coarse good back to the classifier.
  • the solution according to the invention now provides that part of the coarse material is immediately recirculated to the classifier in order to see out the remaining fine fraction in the coarse material.
  • the coarse material leaving the classifier is loaded with a smaller proportion of fine material, so that subsequently the efficiency of the mill, in particular a ball mill, can also be increased.
  • the quantity of the coarse material recirculated to the classifier is controlled as a function of the fineness of the material supplied to the classifier.
  • the classifier 1 has a classifier inlet 1.1, a coarse material outlet 1.2 and a fine material outlet 1.3.
  • a distributor 3 with an input 3.1 and a first and a second output 3.2, 3.3 is provided.
  • the inlet 3.1 of the distributor 3 is connected to the coarse material outlet 1.2 of the classifier.
  • the first outlet 3.2 is connected to an inlet 2.1 of the mill and the second outlet 3.3 is connected to the classifier inlet 1.1.
  • An outlet 2.2 of the mill 2 is also connected to the classifier inlet 1.1 via a conveying device, for example a bucket elevator 4.
  • the material to be processed can be fed to the grinding circuit in such a way that it first reaches the sifter 1 or, alternatively, the mill 2 first.
  • the means for supplying a material to be processed to the grinding circuit are indicated schematically by an arrow 5, the material first being fed to the classifier via the bucket elevator 4.
  • direct loading of the goods in the area of the classifier is also conceivable.
  • the task for the mill is indicated by dashed arrow 5 '.
  • the material to be processed is a product from a pre-grinding circle, it is conceivable to feed it through the classifier as well as through the mill. When feeding via the classifier, the difference between the fine material and the classifier task would increase automatically. The task on the classifier is therefore particularly appropriate when the pre-meal product has already reached a certain fineness.
  • the grinding system shown is operated as a single-stage grinding system, the material to be processed is fresh material, which is usually placed in the area of the mill.
  • the distributor 3 divides the coarse material flow coming from the classifier 1 in terms of quantity, the ratio of the two partial flows from the outputs 3.2 and 3.3 being adjustable.
  • the distributor can be formed, for example, by a simple splitter flap.
  • the classifier 1 is designed as a dynamic classifier, in particular as a dynamic wind classifier.
  • the material to be processed is processed in the grinding circuit consisting of classifier 1 and mill 2.
  • the feed is separated into coarse and fine goods, whereby the fine goods can be deducted as finished goods.
  • the coarse material arrives in the distributor 3 and is divided there quantitatively between the two outlets 3.2 and 3.3, so that part of the coarse material is passed to the mill and another part of the coarse material is recirculated to the classifier.
  • the quantitative distribution between the two outputs is adjustable and is expediently controlled depending on the fineness of the classifier feed.
  • the comminuted material in the mill reaches the sifter via the bucket elevator 4 together with the recirculated coarse material.
  • the fine material portion of the classifier task can be better and more efficiently sorted out, so that a coarser coarse material is obtained.
  • the mill is relieved of fines, so that the grinding efficiency is increased.
  • the process according to the invention can be used particularly advantageously in the post-grinding circuit of a two-stage grinding realizing plants. But this idea can also be used to advantage in a single-stage grinding circuit without a pre-grinding circuit, especially when very high classifier feed fineness results, which occurs particularly when grinding high-quality cements with approx. 4,200 crrr / g according to Blaine.
  • the partial recirculation of the coarse material to the classifier in a post-grinding circuit can increase the efficiency of the grinding system by at least 10%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

La présente invention concerne un procédé et une installation permettant la préparation de matière fine, comprenant un circuit de broyage comprenant un séparateur (1) et un broyeur (2). Selon l'invention, le circuit de broyage est alimenté avec une matière à traiter, et la matière alimentant le séparateur est séparée en matière grossière et matière fine. La matière grossière est au moins partiellement introduite dans le broyeur, et la matière fragmentée dans le broyeur alimente le séparateur. La matière grossière quittant le séparateur est séparée, une partie de la matière grossière étant introduite dans le broyeur, et l'autre partie de la matière grossière étant réintroduite dans le séparateur.
PCT/EP2001/013075 2000-11-13 2001-11-12 Procede et installation permettant la production de matiere fine Ceased WO2002038275A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002217019A AU2002217019A1 (en) 2000-11-13 2001-11-12 Method and installation for producing fine material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000156158 DE10056158C5 (de) 2000-11-13 2000-11-13 Verfahren und Anlage zur Herstellung von Feingut
DE10056158.6 2000-11-13

Publications (1)

Publication Number Publication Date
WO2002038275A1 true WO2002038275A1 (fr) 2002-05-16

Family

ID=7663100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/013075 Ceased WO2002038275A1 (fr) 2000-11-13 2001-11-12 Procede et installation permettant la production de matiere fine

Country Status (3)

Country Link
AU (1) AU2002217019A1 (fr)
DE (1) DE10056158C5 (fr)
WO (1) WO2002038275A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976469A (en) * 1988-07-22 1990-12-11 Cle Method of crushing and compacting any mineral material whatsoever and system for carrying out this method
EP0542043A1 (fr) * 1991-11-12 1993-05-19 Krupp Polysius Ag Procédé de régulation d'une installation de broyage en circuit fermé
US5897063A (en) * 1995-04-04 1999-04-27 Krupp Polysius Ag Method of comminuting ore material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH505651A (de) * 1968-03-21 1971-04-15 Escher Wyss Ag Vorrichtung zum Mahlen und Sichten eines körnigen Gutes, insbesondere von Zement
DE3506486A1 (de) * 1985-02-23 1986-08-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie zum beispiel zementklinker, erz, kohle oder dergleichen
CH683155A5 (de) * 1991-07-03 1994-01-31 R & D Carbon Ltd Verfahren zur Aufbereitung eines Trockenstoffes zur Herstellung von Elektroden.
DE4239602A1 (de) * 1992-11-25 1994-05-26 Krupp Polysius Ag Verfahren und Vorrichtung zur Zerkleinerung von Mahlgut
DE19526040A1 (de) * 1995-07-17 1997-01-23 Krupp Polysius Ag Verfahren und Anlage zur Zerkleinerung von Mahlgut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976469A (en) * 1988-07-22 1990-12-11 Cle Method of crushing and compacting any mineral material whatsoever and system for carrying out this method
EP0542043A1 (fr) * 1991-11-12 1993-05-19 Krupp Polysius Ag Procédé de régulation d'une installation de broyage en circuit fermé
US5897063A (en) * 1995-04-04 1999-04-27 Krupp Polysius Ag Method of comminuting ore material

Also Published As

Publication number Publication date
AU2002217019A1 (en) 2002-05-21
DE10056158B4 (de) 2008-11-27
DE10056158A1 (de) 2002-05-29
DE10056158C5 (de) 2014-11-13

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