EP0614701A2 - Procédé et installation pour le broyage en lit de matière de matériau friable - Google Patents

Procédé et installation pour le broyage en lit de matière de matériau friable Download PDF

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Publication number
EP0614701A2
EP0614701A2 EP94102585A EP94102585A EP0614701A2 EP 0614701 A2 EP0614701 A2 EP 0614701A2 EP 94102585 A EP94102585 A EP 94102585A EP 94102585 A EP94102585 A EP 94102585A EP 0614701 A2 EP0614701 A2 EP 0614701A2
Authority
EP
European Patent Office
Prior art keywords
classifier
deagglomeration
roller mill
deagglomerator
stage
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
EP94102585A
Other languages
German (de)
English (en)
Other versions
EP0614701A3 (fr
Inventor
Detlev Dr.-Ing. Kupper
Manfred Dipl.-Ing. Müller
Norbert Dipl.-Ing. Patzelt
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
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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0614701A2 publication Critical patent/EP0614701A2/fr
Publication of EP0614701A3 publication Critical patent/EP0614701A3/fr
Ceased legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a method for comminuting the bed of brittle regrind, in particular cement clinker, ore or the like. Mineral material, according to the preamble of claim 1. Furthermore, the invention relates to a system for comminuting the bed of such regrind, according to the preamble of claim 4.
  • brittle ground material is comminuted in the grinding gap of two rollers of a material bed roller mill that are pressed against one another at high pressure, at least some of the comminuted material exiting the material bed roller mill in the form of more or less solid agglomerates, so-called flakes.
  • This deagglomerated material is then fed to a subsequent classifier, in particular an air classifier, in which it is classified into at least two material fractions of different fineness, of which the coarse material fraction is fed to a further comminution, for example returned to the material bed roller mill, and the fine material fraction, which can form a finished product , is subtracted.
  • a subsequent classifier in particular an air classifier, in which it is classified into at least two material fractions of different fineness, of which the coarse material fraction is fed to a further comminution, for example returned to the material bed roller mill, and the fine material fraction, which can form a finished product , is subtracted.
  • the invention is therefore based on the object of providing a method of the type required in the preamble of claim 1 and a device of the type required in the preamble of claim 4, as a result of which, in a relatively simple manner and with relatively simple means, significantly higher degrees of deagglomeration are achieved than in the known designs can.
  • the degree of dissolution or disagglomeration of the agglomerates or slugs leaving the material bed roller mill can be increased considerably in comparison to the known designs by branching off an adjustable part of the disagglomerated material between the deagglomeration stage and the classifier and again the disagglomeration stage is abandoned. This enables multiple disagglomeration stresses on the slugs or agglomerates, i. H.
  • An adjustable portion of the goods coming from the disagglomeration stage is continuously recirculated to the deagglomeration stage, while the remaining portion of the disagglomerated goods is fed in the usual way to the classifier, from which the fine material is withdrawn (for example as a finished product) and the coarse material fraction (so-called size) fed further comminution, for example returned to the material bed roller mill.
  • the higher degree of deagglomeration achieved by the method according to the invention also has particularly advantageous effects for the entire comminution operation in this material bed comminution, inter alia in that a greater proportion of fine material is sighted in the classifier, for example with the same finished product fineness and the same quantity of finished product, and thereby the return of coarse material further comminution, in particular to the Gutbett roll mill, correspondingly significantly reduced becomes.
  • this method according to the invention advantageously also offers the possibility of accommodating special requirements of product quality, for example in the final grinding of cement, if a flatter grain size (grain size distribution) can be achieved in comparison with the known designs.
  • a flatter grain size grain size distribution
  • the throughput of existing material bed crushing plants can thus also be increased and, in addition, crushing energy can be saved.
  • a lower roller circumferential speed can be set, as a result of which material-related machine vibrations (mill vibrations) can be counteracted.
  • a portion of the good that has branched off from the disagglomerated product (Schülpen) after the disagglomeration stage is subjected to more than two times the disagglomeration application.
  • a plant for material bed crushing is characterized in particular by the fact that an adjustable material distribution device with two branch lines is arranged in the conveying connection between the material outlet of the deagglomerator and the classifier, of which one branch line with the material inlet of the deagglomerator and the second branch line with the material inlet of the preparer communicates.
  • FIGS. 1 to 3 three different plant examples for the material bed comminution are illustrated very schematically.
  • the plant examples of all three drawing figures serve to comminute the bed of brittle regrind, in particular cement clinker, ores or similar mineral goods, to a predetermined fine or product fineness.
  • the three plant examples in FIGS. 1, 2 and 3 contain a material bed roller mill 1, a deagglomerator 2 arranged downstream of the material bed roller mill 1, and a classifier 3 downstream of the deagglomerator 2 and used to classify deagglomerated material.
  • the material bed roller mill 1 contains two rollers 4, 5, which can be driven in opposite directions and driven against one another at relatively high pressure, as well as a material inlet shaft 6 and a material outlet 7.
  • the material bed roller mill 1 is fed fresh ground material (arrow 8) via the material inlet shaft 6.
  • the regrind is subjected to a material bed comminution in a grinding gap 9, which is formed between the two rollers 4, 5, in which the comminuted regrind is obtained predominantly in the form of agglomerates or flakes 10.
  • the slugs 10 coming from the material bed roller mill 1 enter the deagglomerator 2 via the material inlet 2a so that they are dissolved or deagglomerated there.
  • a deagglomerator 2 is a suitable comminution device which is particularly adapted to the dissolving or deagglomerating of the slugs 10.
  • a deagglomerator 2 with a corresponding racket mechanism is illustrated; however, it can also be formed in a manner known per se by any other suitable device.
  • Deagglomerated material is then fed to the sifter 3 via a conveying connection 11 (FIG. 1) or 11 ′ (FIG. 2) or 11 ′′ (FIG. 3), which on the one hand has the product outlet 2b of the deagglomerator 2 and on the other hand has the Good inlet 3a of classifier 3 is connected.
  • a conveying connection 11 FIG. 1
  • 11 ′ FIG. 2
  • 11 ′′ FIG. 3
  • Any suitable classifying or classifying device can be provided as classifier 3; in the three system examples illustrated in FIGS. 1, 2 and 3 it is assumed that it is a known air circulation classifier, in particular in the form of a rotor classifier.
  • This sifter 3 also contains a fine material separator 12, from which sufficient ground material is removed as fine material or finished product 13.
  • the sifter 3 also has a coarse material outlet 3b, which is connected via a semolina line 14 to the material inlet shaft 6 of the material bed roller mill 1, so that not yet comminuted coarse material (meal) can be returned to the material bed roller mill 1 for renewed comminution. It is therefore assumed for the sake of simplicity that the classifier 3 is designed for classifying deagglomerated goods into a coarse material fraction to be returned to the material bed roller mill 1 and a fine material fraction to be derived.
  • the conveying connection 11 between the deagglomerator 2 and the classifier 3 can be a very simple line connection, mechanical or pneumatic conveying connection, in which an adjustable material distribution device in Form of a simple good divider 15 is provided, which has two branch lines or line connections 15a and 15b.
  • the first branch line 15a of this product divider 15 is connected to the product inlet 2a of the deagglomerator 2 via a return line 16, while the second branch line 15b is connected to the product inlet 3a of the classifier 3 via the remaining part of the associated conveying connection 11.
  • the conveying connection 11 'between the deagglomerator 2 and classifier 3 is essentially formed by a pneumatic conveying line with a separator 17, under which in turn a separator 15 with two branch lines 15a and 15b is arranged.
  • a return line 16 leads from the first branch line 15a to the good inlet 2a of the deagglomerator, while the second branch line 15b is connected to the good inlet 3a of the classifier 3 via a good line 18.
  • FIG. 3 shows a third system example in which the conveying connection 11 ′′ between the deagglomerator 2 and the classifier 3 is likewise essentially formed by a pneumatic conveying device.
  • a pre-sifter (static wind sifter) 19 which is designed for a relatively coarse appraisal and has a coarse material outlet 19 a, which is connected via the return line 16 to the material inlet 2a of the deagglomerator 2, is switched on as the material dividing device the fine material outlet 19b of this pre-classifier 19 is connected to the product inlet 3a of the classifier 3 via a pneumatic partial conveying line 11''a.
  • a corresponding adjustable crop dividing device ensures that an adjustable subset of the deagglomerated material can be recirculated to the deagglomerator (deagglomeration stage) for multiple use.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP94102585A 1993-03-08 1994-02-21 Procédé et installation pour le broyage en lit de matière de matériau friable. Ceased EP0614701A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934307230 DE4307230A1 (de) 1993-03-08 1993-03-08 Verfahren und Anlage zur Gutbettzerkleinerung von sprödem Mahlgut
DE4307230 1993-03-08

Publications (2)

Publication Number Publication Date
EP0614701A2 true EP0614701A2 (fr) 1994-09-14
EP0614701A3 EP0614701A3 (fr) 1995-02-08

Family

ID=6482219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102585A Ceased EP0614701A3 (fr) 1993-03-08 1994-02-21 Procédé et installation pour le broyage en lit de matière de matériau friable.

Country Status (2)

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EP (1) EP0614701A3 (fr)
DE (1) DE4307230A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785259A (en) * 1996-03-18 1998-07-28 Ein Engineering Co., Ltd. Process for regenerating laminated thermoplastic molded resin articles and apparatus for regenerating the same
WO2009068465A1 (fr) * 2007-11-29 2009-06-04 Khd Humboldt Wedag Gmbh Installation de broyage cylindrique avec tamis et dispositif de séparation de produit fin
FR3088833A1 (fr) * 2018-11-26 2020-05-29 Cfgedis Ensemble pour le traitement d’un produit pulvérulent ou d’un produit granulé

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512498A1 (de) * 1995-04-04 1996-10-10 Krupp Polysius Ag Verfahren zur Gewinnung von Metallen aus Erzmaterial
DE19512509B4 (de) * 1995-04-04 2009-07-30 Polysius Ag Verfahren zur Zerkleinerung von Erzmaterial
DE19526040A1 (de) * 1995-07-17 1997-01-23 Krupp Polysius Ag Verfahren und Anlage zur Zerkleinerung von Mahlgut
DE19626387C2 (de) * 1996-07-01 2003-05-28 Polysius Ag Verfahren zur Gewinnung von Metall aus Erzmaterial
CN108855557B (zh) * 2018-08-31 2021-02-09 江苏鹏飞集团股份有限公司 可切换生产水泥或矿粉的立磨生产***

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719251A1 (de) * 1987-06-10 1988-12-22 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
DE4023624A1 (de) * 1989-09-15 1991-03-28 Zementanlagen Und Maschinenbau Rohrkugelmuehlen zur effektiven desagglomeration und zerkleinerung von hochdruckzerkleinertem sproeden material

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US1498181A (en) * 1921-08-31 1924-06-17 Lindsay Lycurgus Separator
DE972656C (de) * 1951-11-08 1959-08-27 Metallgesellschaft Ag Umschaltvorrichtung mit Absperrschiebern fuer eine Staubabscheideanlage mit einem Vorabscheider, einem Nachabscheider und einer zu diesem parallel angeordneten Umgehungsleitung
GB1167686A (en) * 1968-05-21 1969-10-22 Air Sifters Inc Classifying System
DE3439129A1 (de) * 1984-10-25 1986-05-07 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur waermebehandlung von feinkoernigem gut
DE3544798C2 (de) * 1985-10-29 1995-04-20 Kloeckner Humboldt Deutz Ag Einrichtung zur Zerkleinerung und Mahlung und Trocknung (Mahltrocknung) von feuchtem Gut
DE3644341A1 (de) * 1986-12-23 1988-07-07 Krupp Polysius Ag Verfahren und anlage zur zweistufigen zerkleinerung von sproedem mahlgut
GB8630999D0 (en) * 1986-12-30 1987-02-04 Coal Industry Patents Ltd Separation of granular solid material
DE3711926A1 (de) * 1987-04-08 1988-10-27 Kloeckner Humboldt Deutz Ag Einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie z. b. zementklinker, erz, kohle oder dergleichen
DE3813661A1 (de) * 1988-04-22 1989-11-02 Krupp Polysius Ag Mahlanlage
DE3823380C2 (de) * 1988-07-09 1994-09-08 Kloeckner Humboldt Deutz Ag Sichter zum Sichten von körnigem, insbesondere agglomeriertem Gut
DE3901436C2 (de) * 1989-01-19 2001-01-25 Deutz Ag Verfahren zum Betrieb einer Kreislaufmahlanlage zur Mahlung und Trocknung feuchten Gutes
DE3915432C2 (de) * 1989-05-11 1996-05-09 Kloeckner Humboldt Deutz Ag Verfahren zur Herstellung von normgerechtem Zement
DE3921823A1 (de) * 1989-07-03 1991-01-17 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719251A1 (de) * 1987-06-10 1988-12-22 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
DE4023624A1 (de) * 1989-09-15 1991-03-28 Zementanlagen Und Maschinenbau Rohrkugelmuehlen zur effektiven desagglomeration und zerkleinerung von hochdruckzerkleinertem sproeden material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, Bd.28, Nr.4, August 1992, NEW YORK, US Seiten 954 - 961, XP000306819 A.J. KREISBERG 'Selection and Application of Roller Press for Raw Meal Preparation' *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785259A (en) * 1996-03-18 1998-07-28 Ein Engineering Co., Ltd. Process for regenerating laminated thermoplastic molded resin articles and apparatus for regenerating the same
WO2009068465A1 (fr) * 2007-11-29 2009-06-04 Khd Humboldt Wedag Gmbh Installation de broyage cylindrique avec tamis et dispositif de séparation de produit fin
US8066211B2 (en) 2007-11-29 2011-11-29 Khd Humboldt Wedag Gmbh Closed-circuit grinding plant having sifter and fine material settling device
CN101835539B (zh) * 2007-11-29 2011-12-14 Khd洪保德韦达克有限公司 具有筛分器和细料分离装置的循环碾磨设备
FR3088833A1 (fr) * 2018-11-26 2020-05-29 Cfgedis Ensemble pour le traitement d’un produit pulvérulent ou d’un produit granulé

Also Published As

Publication number Publication date
DE4307230A1 (de) 1994-09-15
EP0614701A3 (fr) 1995-02-08

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