EP0237641B1 - Installation pour le broyage de matière à broyer fragile - Google Patents

Installation pour le broyage de matière à broyer fragile Download PDF

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Publication number
EP0237641B1
EP0237641B1 EP86117585A EP86117585A EP0237641B1 EP 0237641 B1 EP0237641 B1 EP 0237641B1 EP 86117585 A EP86117585 A EP 86117585A EP 86117585 A EP86117585 A EP 86117585A EP 0237641 B1 EP0237641 B1 EP 0237641B1
Authority
EP
European Patent Office
Prior art keywords
agglomerates
feed plate
impact elements
grinding
roller mill
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.)
Expired - Lifetime
Application number
EP86117585A
Other languages
German (de)
English (en)
Other versions
EP0237641A3 (en
EP0237641A2 (fr
Inventor
Gerhard Dipl.-Ing. Gudat
Manfred Dipl.-Ing. Müller
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
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Application filed by Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0237641A2 publication Critical patent/EP0237641A2/fr
Publication of EP0237641A3 publication Critical patent/EP0237641A3/de
Application granted granted Critical
Publication of EP0237641B1 publication Critical patent/EP0237641B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • 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
    • B02C21/002—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill
    • B02C21/005—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill the roller mill having cooperating rollers
    • 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
    • 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
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone

Definitions

  • the invention relates to a system (according to the preamble of claim 1) for crushing brittle regrind, such as cement clinker.
  • a system according to the preamble of claim 1 is known from EP-A 0 084 383.
  • the ground material is first subjected to single-grain size reduction and material bed size reduction in a roller mill using high pressure and the formation of agglomerates. These agglomerates are then dissolved in a device downstream of the roller mill, for example a tube mill, a spreading disc wind sifter or a classifying sifter.
  • a further grinding stage can also be provided for further comminution of the semolina resulting from the screening.
  • the invention has for its object to develop a system of the type required in the preamble of claim 1 so that with good dissolution of the agglomerates, improved economy, in particular reduced energy consumption, is achieved.
  • the high fine fraction of the regrind contained in the agglomerates is exposed and removed from the grinding system during the subsequent screening, so that this fine fraction no longer loads the following grinding stage.
  • the regrind feed plate is driven independently of the classifier's view organ, so that the screening and the dissolution of the agglomerates can be optimized independently of one another. In this way, the efficiency of the entire system is significantly improved, and by relieving the further size reduction, there is a considerable reduction in energy consumption.
  • the size reduction stage downstream of the classifier (generally a ball mill) can be dimensioned smaller in new plants and in existing plants (in which there is subsequently a deagglomeration of the regrind the sighting is provided) is loaded less.
  • the operation of the downstream comminution stage can also be better adapted to the operation of the roller mill in this embodiment according to the invention.
  • the grinding system shown in FIG. 1 for comminuting brittle ground material for example cement clinker, contains a roller mill 1, a classifier 2 with a built-in deagglomerator and a ball mill 3.
  • the roller mill 1 contains two rollers 4, 5, in the gap of which the millbase is subjected to single grain size reduction and material bed size reduction using high pressure and the formation of agglomerates.
  • the ground material discharged from the roller mill 1 is then fed to the classifier 2.
  • the classifier 2 (the details of which can be seen in FIG. 2) contains a rotating classifying system 7 in the upper part of the housing 6, which is driven by a shaft 8.
  • a rotating regrind feed plate 9 is arranged below the rotating viewing system 7 and is equipped with impact elements 10, 11 of different heights.
  • the grinding material feed plate 9 is driven from below by a shaft 12.
  • regrind feed plate 9 there is a feed hopper 13 to which the regrind is fed via a screw conveyor 14.
  • the classifying air enters in the lower area of the housing 6 via a nozzle 15 and then passes through a fixed blind ring 16.
  • the fine material is removed from the classifying air through the nozzle 17 and separated in a cyclone or filter (not shown in FIG. 1).
  • the semolina (arrow 23) are discharged from the housing 6 via a funnel 18 and fed to the ball mill 3. Their grains are again fed to the classifier 2 (arrow 19), while the fine material obtained in the ball mill 3 is drawn off with the mill exhaust air 20.
  • the regrind discharged from the roller mill i contains a high proportion of agglomerates (flakes). These agglomerates are largely dissolved in the sifter 2, specifically before they enter the classifying chamber 21, when the regrind on the rotating regrind feed plate 9 passes the impact elements 10 during the movement outwards. As a result of this dissolution of the agglomerates, the high fine fraction contained therein is exposed, carried upward by the classifying air (arrows 22) and separated in a cyclone or filter arranged downstream of the classifier 2. The ball mill 3 is therefore only loaded with the semolina accumulating in the classifier 2, but not with fines.
  • the screening and the dissolution of the agglomerates can be optimized independently of one another.
  • the regrind feed plate 9 ' which is also equipped with impact elements 10' on its circumference and is driven by a core shaft 8 ', is located within a further drum 24, which has circumference with impact elements 25 is occupied and is driven by an outer shaft 26.
  • the regrind is fed in via a feed hopper 13.
  • the speeds of the shafts 8 'and 26 can be selected differently. It is also possible that the outer drum 24 with the impact elements 25 is arranged to be stationary and only the regrind feed plate 9 'is driven.
  • the agglomerates formed in the roller mill 1 are thus effectively dissolved before the ground material is introduced into the classifying area 21 of the classifier 2.

Claims (4)

1. Installation de fragmentation de matière friable, comprenant:
a) un broyeur à cylindres dans lequel la matière est soumise à une fragmentation des grains individuels et à une fragmentation en lit avec utilisation d'une pression élevée et formation d'agglomérés,
b) un séparateur (2) monté en aval du broyeur à cylindres (1) et comprenant au moins un organe rotatif de triage (7), une désagrégation des agglomérés formés dans le broyeur à cylindres ayant lieu dans ledit séparateur,
c) un étage de broyage (3) destiné à la poursuite de la fragmentation des graviers provenant du triage dans le séparateur,
caractérisée par la particularité suivante:
d) le dispositif prévu pour la désagrégation des agglomérés à l'intérieur du séparateur (2) consiste en une sole rotative d'alimentation (9) équipée d'éléments percutants (10, 11), disposée au-dessous de l'organe rotatif de triage (7) et dont la commande est indépendante de celle de ce dernier.
2. Installation selon la revendication 1, caractérisée en ce que la sole d'alimentation (9) est équipée d'éléments percutants (10, 11) ayant des hauteurs différentes.
3. Installation selon la revendication 1, caractérisée en ce que la sole d'alimentation (9'), qui est équipée à la périphérie d'éléments percutants (10') et qui est commandée au moyen d'un arbre central (8'), est disposée à l'intérieur d'un tambour (24) équipé à la périphérie d'éléments percutants (25).
4. Installation selon la revendication 1, caractérisée en ce que l'étage de broyage destiné à la poursuite de la fragmentation des graviers provenant du triage dans le séparateur est formé d'un broyeur à boulets (3).
EP86117585A 1986-03-19 1986-12-17 Installation pour le broyage de matière à broyer fragile Expired - Lifetime EP0237641B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863609229 DE3609229A1 (de) 1986-03-19 1986-03-19 Verfahren und anlage zur zerkleinerung von sproedem mahlgut
DE3609229 1986-03-19

Publications (3)

Publication Number Publication Date
EP0237641A2 EP0237641A2 (fr) 1987-09-23
EP0237641A3 EP0237641A3 (en) 1988-07-27
EP0237641B1 true EP0237641B1 (fr) 1990-08-29

Family

ID=6296762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117585A Expired - Lifetime EP0237641B1 (fr) 1986-03-19 1986-12-17 Installation pour le broyage de matière à broyer fragile

Country Status (4)

Country Link
US (1) US4732334A (fr)
EP (1) EP0237641B1 (fr)
DE (2) DE3609229A1 (fr)
ES (1) ES2017626B3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712147A1 (de) * 1987-04-10 1988-10-20 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von sproedem mahlgut
DE3815217A1 (de) * 1988-05-04 1989-11-16 Pfeiffer Christian Maschf Verfahren zur zerkleinerung von sproedem mahlgut
DE3822729A1 (de) * 1988-07-05 1990-01-11 Krupp Polysius Ag Anlage zur zerkleinerung von sproedem mahlgut
DE3843338A1 (de) * 1988-12-22 1990-06-28 Krupp Polysius Ag Sichter
DD298600A5 (de) * 1989-09-15 1992-03-05 Forschungsinstitut Fuer Aufbereitung,De Rohrkugelmuehlen zur effektiven desagglomeration und zerkleinerung von hochdruckzerkleinertem sproeden material
DE4005323A1 (de) * 1990-02-20 1991-08-22 Krupp Polysius Ag Verfahren und mahlanlage zur zweistufigen zerkleinerung von sproedem mahlgut
DK167054B1 (da) * 1990-11-26 1993-08-23 Smidth & Co As F L Dobbeltseparator til udskillelse af partikelformet materiale
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung
ATE175594T1 (de) * 1992-10-20 1999-01-15 Waeschle Maschf Gmbh Vorrichtung und verfahren zum reinigen eines im wesentlichen in granulatform vorliegenden korngemenges
BRPI1004773B1 (pt) * 2010-11-22 2020-12-08 Edinez Bilk silo para separação da areia de brita do material pulverulento

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1757161B1 (de) * 1968-04-06 1971-10-21 Steinmueller Gmbh L & C Prallmuehle
US4597537A (en) * 1982-09-14 1986-07-01 Onoda Cement Company, Ltd. Vertical mill
DE3302176A1 (de) * 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
DE3314103A1 (de) * 1983-04-19 1984-10-25 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur gemeinsamen mahlung zweier oder mehrerer unterschiedlich mahlbarer sproeder stoffe
GB8327201D0 (en) * 1983-10-11 1983-11-09 Croft Impresa Ltd Obtaining comminuted product from solid feed material
DE3337615A1 (de) * 1983-10-15 1985-04-25 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur zerkleinerung, mahlung und aufbereitung gruben- oder naturfeuchter mineralischer rohstoffe wie erze oder dergleichen
DE3343788A1 (de) * 1983-12-03 1985-06-13 Bert 5470 Andernach Steffens Verfahren und vorrichtung zur trennung von produkten oder werkstoffmischungen aus faserigen werkstoffen und nichtfaserigen werkstoffen
JPS60231447A (ja) * 1984-04-27 1985-11-18 日本セメント株式会社 セメント粉砕方法
DE3504584A1 (de) * 1985-02-11 1986-08-21 Krupp Polysius Ag, 4720 Beckum Anlage zur zerkleinerung von mahlgut
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

Also Published As

Publication number Publication date
EP0237641A3 (en) 1988-07-27
ES2017626B3 (es) 1991-03-01
DE3673808D1 (de) 1990-10-04
DE3609229A1 (de) 1987-09-24
US4732334A (en) 1988-03-22
EP0237641A2 (fr) 1987-09-23

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