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 PDFInfo
- 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
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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
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.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
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)
Country | Link |
---|---|
EP (1) | EP0614701A3 (fr) |
DE (1) | DE4307230A1 (fr) |
Cited By (3)
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)
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)
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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1993
- 1993-03-08 DE DE19934307230 patent/DE4307230A1/de not_active Withdrawn
-
1994
- 1994-02-21 EP EP94102585A patent/EP0614701A3/fr not_active Ceased
Patent Citations (2)
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)
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)
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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