EP0237641A2 - 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
EP0237641A2
EP0237641A2 EP86117585A EP86117585A EP0237641A2 EP 0237641 A2 EP0237641 A2 EP 0237641A2 EP 86117585 A EP86117585 A EP 86117585A EP 86117585 A EP86117585 A EP 86117585A EP 0237641 A2 EP0237641 A2 EP 0237641A2
Authority
EP
European Patent Office
Prior art keywords
agglomerates
regrind
roller mill
feed plate
plant
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.)
Granted
Application number
EP86117585A
Other languages
German (de)
English (en)
Other versions
EP0237641A3 (en
EP0237641B1 (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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6296762&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0237641(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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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Classifications

    • 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 plant for comminuting brittle regrind, such as cement clinker, according to the preamble of claim 1.
  • the agglomerates formed in the roller mill can also be connected in a downstream device, such as. B. ball mill, spreading plate wind sifter or classifying sieve, one making use of the simultaneously deagglomerating effect of a device which is primarily assigned to another process step. If the dissolution of the agglomerates is to be carried out, for example, in a conventional spreading plate wind sifter, this places an additional load on the spreading or feed plate of the wind sifter, so that a completely inadequate dissolution of the agglomerates must be expected.
  • a downstream device such as. B. ball mill, spreading plate wind sifter or classifying sieve
  • the invention is therefore based on the object of developing a system of the type required in the preamble of claim 1 in such a way that, with a good dissolving effect of the agglomerates, it is characterized by improved economy, in particular reduced energy consumption.
  • the agglomerates formed in the roll nip of the roll mill are dissolved by a special device before the screening and within the classifier, that is to say this special device is not formed by the spreading or feed plate alone, as in the known embodiment explained last, but rather the rotating regrind feed plate is equipped with impact elements.
  • This impact elements exposes the high fine fraction of the ground material contained in the agglomerates (slugs) and removes them from the grinding system during the subsequent screening, so that this fine fraction no longer stresses the subsequent comminution stage.
  • 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 found 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 ground material discharged from the roller mill 1 contains a high proportion of agglomerates (flakes). These agglomerates are largely dissolved in the sifter 2, specifically before they enter the classifying space 21, when the regrind on the rotating regrind feed plate 9 passes the impact elements 10 during the outward movement. 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 discharged in a cyclone or filter connected downstream of the classifier 2 divorced. 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 covered on its circumference with impact elements 10 declare and is driven by a core shaft 8 ⁇ , is located within a further drum 24, which is circumferentially occupied with impact elements 25 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 stationary and only the regrind feed plate 9eller is driven.
  • the agglomerates formed in the roller mill 1 are effectively dissolved before the ground material is introduced into the classifying chamber 21 of the classifier 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
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 true EP0237641A2 (fr) 1987-09-23
EP0237641A3 EP0237641A3 (en) 1988-07-27
EP0237641B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374491A2 (fr) * 1988-12-22 1990-06-27 Krupp Polysius Ag Séparateur pneumatique
WO1992009376A1 (fr) * 1990-11-26 1992-06-11 F.L. Smidth & Co. A/S Separateur double servant a trier des matieres particulaires
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung
US5458245A (en) * 1992-10-20 1995-10-17 Buhler Gmbh Device for cleaning a mixture of substantially granular grains and method for cleaning this mixture of grains

Families Citing this family (6)

* 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
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
BRPI1004773B1 (pt) * 2010-11-22 2020-12-08 Edinez Bilk silo para separação da areia de brita do material pulverulento

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0084383B1 (fr) * 1983-01-24 1986-06-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable

Family Cites Families (8)

* 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
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084383B1 (fr) * 1983-01-24 1986-06-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
27TH IEEE CEMENT INDUSTRY TECHNICAL CONFERENCE, New Orleans, Louisiana, 20.-23. Mai 1985, Seiten 1-11, Annexe 1-13, IEEE, New York, US; C. HERRMANN: "Increased cement grinding efficiency by using high efficiency separators" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374491A2 (fr) * 1988-12-22 1990-06-27 Krupp Polysius Ag Séparateur pneumatique
EP0374491A3 (fr) * 1988-12-22 1991-12-11 Krupp Polysius Ag Séparateur pneumatique
WO1992009376A1 (fr) * 1990-11-26 1992-06-11 F.L. Smidth & Co. A/S Separateur double servant a trier des matieres particulaires
TR25513A (tr) * 1990-11-26 1993-05-01 Smidth & Co As F L Tanecik halindeki maddeleri tasnif etmeye mahsus cift katli separatör (ayirici)
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung
US5458245A (en) * 1992-10-20 1995-10-17 Buhler Gmbh Device for cleaning a mixture of substantially granular grains and method for cleaning this mixture of grains

Also Published As

Publication number Publication date
ES2017626B3 (es) 1991-03-01
EP0237641A3 (en) 1988-07-27
DE3673808D1 (de) 1990-10-04
US4732334A (en) 1988-03-22
DE3609229A1 (de) 1987-09-24
EP0237641B1 (fr) 1990-08-29

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