EP0901828A1 - Procédé et installation de broyage en circuit fermé de matériau friable - Google Patents

Procédé et installation de broyage en circuit fermé de matériau friable Download PDF

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Publication number
EP0901828A1
EP0901828A1 EP98115289A EP98115289A EP0901828A1 EP 0901828 A1 EP0901828 A1 EP 0901828A1 EP 98115289 A EP98115289 A EP 98115289A EP 98115289 A EP98115289 A EP 98115289A EP 0901828 A1 EP0901828 A1 EP 0901828A1
Authority
EP
European Patent Office
Prior art keywords
press
roller
pressure
roller press
grain
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.)
Withdrawn
Application number
EP98115289A
Other languages
German (de)
English (en)
Inventor
Akbar Dr. Farahmand
Rene Klymowsky
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag 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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP0901828A1 publication Critical patent/EP0901828A1/fr
Withdrawn legal-status Critical Current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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more 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
    • B02C21/00—Disintegrating plant with or without drying of the material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers

Definitions

  • the invention relates to a method for cycle grinding brittle Ground material in the nip of a high pressure high pressure roller press with rollers, the gap width of which occurs during operation is greater than in the area of the narrowest nip the grain size of the ground material pressed there.
  • the Invention a grinding plant for performing the method.
  • the high pressure roller mill or roller press becomes the nip bulk material supplied from the counter-rotating rollers detected and drawn into the nip by friction.
  • the individual particles of the bulk material that has been drawn in become grain against grain in a good bed, i.e. in one between the two roller surfaces compressed material when used a high pressure crushed each other, so that one here speaks of a material bed crushing (DE-C 27 08 053).
  • product this pressure treatment or good pressing are good agglomerates crushed bulk material, which can then be processed with relatively little unlock mechanical effort or let dissolve, whereby the overall low specific energy requirement of material bed crushing results.
  • the energy saving is at the pure material bed shredding on biggest. Then the grain size of the feed must be smaller than the nip width of the high pressure roller press. With rough goods therefore at least one pre-shredding machine is required, which crushes the entire feed material to a grain size, which is smaller than the gap width of the material bed roller mill. Therefore e.g. proposed in EP-B-0 278 858 Figure 1, a Gutbett roll mill a crushing mill provided with roll profiles upstream, in which the entire feed is pre-shredded. The upstream crushing mill can also be a good bed roller mill act, in the nip of the whole bulk material supplied, including particles with enough already small grain size can be crushed, which reduces the specific energy requirement the entire grinding process is enlarged.
  • the invention has for its object brittle regrind, in particular moist ores and / or other moist minerals with insert a high-pressure high-pressure roller press in which the Roller surfaces by means of a screen armor by an autogenous Wear protection layer are protected against wear, with to grind the lowest possible specific energy requirement without the Risk of premature deterioration of the wear protection layer in the case of coarse / oversize / sprayed grain to have to.
  • moist ores or other moist minerals in the nip of a high pressure high pressure roller press as well as with classifier and recirculation of the coarse sifter are the surfaces of the press rolls by means of a screen armor by one in the press operation autogenous wear protection layer protected against wear, whereby for better construction and firmer adhesion of autogenous wear protection layer below this one fine-grained foreign material such as SiC and binder existing highly wear-resistant adhesive layer can be arranged.
  • this wear protection layer / protective layers against premature Destruction is according to the invention of the high-pressure high-pressure roller press a smooth roller mill upstream, in the Roller gap, which limits its gap width to a maximum of about 4mm not all of the feed material is pre-shredded, but only the oversize (spray) included in the feed material larger is shredded about 2 to 4mm by single grain.
  • the smooth roller mill is not used as a normal pre-shredder, but only to crush what is contained in the feed Oversize, so that the energy requirement of the upstream smooth roller mill is not high.
  • the high-pressure high-pressure roller press is in the nip a single-grain shredder, which in the case of equipment of the roller surfaces with an autogenous wear protection layer is undesirable, according to the invention with certainty avoided, thereby reducing the service life of the roller surfaces of the roller press even when crushing wet bed, one high wear-causing ore material significantly increased becomes.
  • the upstream smooth roller mill Good bed size reduction in the nip of the roller press is favored, because, as experience has shown, the energy saving is greatest largest if the regrind is smaller than the gap width Has grain.
  • the invention in the grinding cycle with the material bed crushing roller press and one High-performance classifier high grinding fineness with not too high good circulation rates reached.
  • the method according to the invention is particularly suitable for grinding of moist material, e.g. for pigment grinding, for grinding of preliminary products for ore pellet production etc.
  • the drawing shows the flow diagram of a circular grinding plant with a Roller press 10 and with a deagglomerator 11 and classifier 12 with recirculation of the coarse sifter 13 to the feed chute 14 the roller press 10.
  • a narrowest nip with a gap width of e.g.
  • rollers of the high-pressure material bed crushing high-pressure roller press 10 these roller surfaces are protected by a screen armor Protected against premature wear, i.e. on the roller surfaces a large number of profile bodies, in particular stud bolts, with a height of approximately greater than 5 mm and with a Distance of approximately less than 40 mm, so that in operation of the roller press 10 the spaces or pockets between the stud bolts with compressed, highly compacted fine-grained material to be filled in, with the good compacts during the roller revolutions in the pockets as ideal autogenous roller wear protection remain.
  • the autogenous Wear protection layer In order to ensure even greater liability for the autogenous Wear protection layer can be below this, so in advance on the with the studs provided roller surface one of fine-grained Foreign material such as silicon carbide and existing binder wear-resistant, rough surface adhesive layer applied have been.
  • the feed material 25 of the grinding plant is in particular: wet ore or other wet materials with a wet between about 2 to 10%, which is already pre-shredded, but some Portion of oversize grain (spray grain) that contains a grain size from e.g. larger than 4mm and that should it in the nip the material bed crushing roller press 10 arrive there can destroy the autogenous wear protection layer prematurely.
  • oversize grain spray grain
  • the material bed crushing high-pressure roller press 10 a smooth roller mill 26 upstream, in the nip, the one in its Gap width is limited to a maximum of about 4 mm, only that in the feed oversize contained pre-crushed by single grain crushing is, while the rest of the feed of the smooth roller mill 26 is not crushed there, so that the specific energy requirement the smooth roll mill 26 is comparatively small.
  • the in the Smooth roller mill 26 is the pressing force acting on the feed material about a power of ten lower than in the material bed crushing roller press 10, so that the roller surfaces of the smooth roller mill 26 not by means of a grid armor against wear must be protected.
  • the peripheral speed of the rolls of the material bed crushing roller press 10 is the upstream Smooth roller mill 26 to approximately greater than 6.0 m / sec. set, which also results in that only the pressure reduction of Oversize grain smooth roller mill 26 due to its high throughput can be built comparatively small.
  • the classifier 12 be operated with hot gas 35 as a visual air stream, so that the Good bed crushing high pressure roller press 10 recirculated reformergriese 13 are dried, causing the operation of the roller press 10 is equalized.
  • the problem underlying the invention could be solved by one of the Good bed crushing roller press 10 upstream jaw crusher, Cone crusher, impact crusher / impact mill, roll crusher with Crushing cams on the roller surfaces, roller bowl mill, ball mill, Vibrating mill etc. cannot be solved.
EP98115289A 1997-09-02 1998-08-14 Procédé et installation de broyage en circuit fermé de matériau friable Withdrawn EP0901828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19738228A DE19738228A1 (de) 1997-09-02 1997-09-02 Verfahren zur Kreislaufmahlung spröden Mahlgutes und Mahlanlage hierzu
DE19738228 1997-09-02

Publications (1)

Publication Number Publication Date
EP0901828A1 true EP0901828A1 (fr) 1999-03-17

Family

ID=7840889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115289A Withdrawn EP0901828A1 (fr) 1997-09-02 1998-08-14 Procédé et installation de broyage en circuit fermé de matériau friable

Country Status (5)

Country Link
US (1) US6032882A (fr)
EP (1) EP0901828A1 (fr)
AU (1) AU8305398A (fr)
BR (1) BR9803316A (fr)
DE (1) DE19738228A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115975A1 (de) * 2014-11-03 2016-05-19 Thyssenkrupp Ag Verfahren zur Herstellung von in Fraktionen unterschiedlicher Korngrößen separierten Gesteinskörnungen
CN105903540A (zh) * 2016-06-22 2016-08-31 中国葛洲坝集团第五工程有限公司 一种堆石坝垫层料的制备系统及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200505B1 (en) 2000-07-31 2001-03-13 Bayer Corporation Method to improve pour-in place molding technology
DE102005045591A1 (de) * 2005-09-23 2007-03-29 Polysius Ag Vorrichtung zum Sichten von Aufgabegut
CN102553700A (zh) * 2011-07-06 2012-07-11 洛阳宇航重工机械有限公司 一种破碎氧化铝结壳块的斗提生产线装置和方法
DE102013110881B4 (de) * 2013-10-01 2016-08-04 Thyssenkrupp Ag Zerkleinerungsanlage und Verfahren zur Erzeugung eines Feinerzproduktes

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084383A2 (fr) * 1983-01-24 1983-07-27 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable
DE2708053C3 (de) 1977-02-24 1986-05-07 Schönert, Klaus, Prof. Dr.-Ing., 7500 Karlsruhe Verfahren zur Fein- und Feinstzerkleinerung von Materialien spröden Stoffverhaltens
EP0278858A2 (fr) 1987-02-10 1988-08-17 Technip Procédé de broyage de matières minérales quelconques et installation pour la mise en oeuvre de ce procédé
FR2616359A1 (fr) * 1987-06-10 1988-12-16 Kloeckner Humboldt Deutz Ag Procede et installation pour le broyage continu par compression de materiaux cassants
EP0399192A1 (fr) * 1989-05-22 1990-11-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Presse à cylindres, notamment pour le broyage par pression de matériau granulé
EP0443195A1 (fr) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Blindage de surface résistant à l'usure pour les cylindres de machines à cylindres, en particulier les presses à cylindres à haute pression
DE19618143A1 (de) * 1996-05-06 1997-11-13 Krupp Polysius Ag Mahlwalze sowie Betriebs- und Reparaturverfahren
EP0829301A1 (fr) * 1996-08-16 1998-03-18 DEUTZ Aktiengesellschaft Machine à deux rouleaux et procédé pour le traitement en pression de matière granulaire

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US2138715A (en) * 1935-05-06 1938-11-29 Paper & Ind Appliances Inc Apparatus for treating paper pulp and the like
DE939301C (de) * 1949-05-12 1956-02-16 Arno Andreas Vorrichtung zum Mahlen von Massenguetern
US4052013A (en) * 1976-03-08 1977-10-04 Georgia-Pacific Corporation Apparatus for shredding rubber tires and other scrap materials
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
DE3518543C3 (de) * 1985-05-23 1996-12-19 Kloeckner Humboldt Deutz Ag Verfahren und Einrichtung zur Zerkleinerung bzw. Mahlung spröden Mahlgutes
EP0220681B1 (fr) * 1985-10-29 1991-05-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Installation pour fractionner et broyer des matériaux fragiles et mouillés
DE3731934A1 (de) * 1987-09-23 1989-04-13 Kloeckner Humboldt Deutz Ag Zweiwalzenmaschine wie z. b. walzenpresse
DE3926882A1 (de) * 1989-08-16 1991-02-21 Kloeckner Humboldt Deutz Ag Kreislaufmahlanlage zur mahlung von sproedem gut
DE3926883A1 (de) * 1989-08-16 1991-02-21 Kloeckner Humboldt Deutz Ag Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere von hochdruck-walzenpressen
DE4126899A1 (de) * 1991-08-14 1993-02-18 Krupp Polysius Ag Verfahren und anlage zum zerkleinern von sproedem mahlgut
DE4223762B4 (de) * 1992-07-18 2009-07-23 Khd Humboldt Wedag Gmbh Sichtereinrichtung zum Sichten von körnigem Gut und Umlaufmahlanlage mit Einschaltung einer solchen Sichtereinrichtung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708053C3 (de) 1977-02-24 1986-05-07 Schönert, Klaus, Prof. Dr.-Ing., 7500 Karlsruhe Verfahren zur Fein- und Feinstzerkleinerung von Materialien spröden Stoffverhaltens
EP0084383A2 (fr) * 1983-01-24 1983-07-27 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable
DE3302176C2 (fr) 1983-01-24 1992-05-07 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln, De
EP0278858A2 (fr) 1987-02-10 1988-08-17 Technip Procédé de broyage de matières minérales quelconques et installation pour la mise en oeuvre de ce procédé
FR2616359A1 (fr) * 1987-06-10 1988-12-16 Kloeckner Humboldt Deutz Ag Procede et installation pour le broyage continu par compression de materiaux cassants
EP0399192A1 (fr) * 1989-05-22 1990-11-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Presse à cylindres, notamment pour le broyage par pression de matériau granulé
EP0443195A1 (fr) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Blindage de surface résistant à l'usure pour les cylindres de machines à cylindres, en particulier les presses à cylindres à haute pression
DE19618143A1 (de) * 1996-05-06 1997-11-13 Krupp Polysius Ag Mahlwalze sowie Betriebs- und Reparaturverfahren
EP0829301A1 (fr) * 1996-08-16 1998-03-18 DEUTZ Aktiengesellschaft Machine à deux rouleaux et procédé pour le traitement en pression de matière granulaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
H.G. ELLERBROCK: "Gutbett-Walzenmühlen", ZKG INTERNATIONAL., vol. 47, no. 2, February 1994 (1994-02-01), WIESBADEN DE, pages 75 - 82, XP000426952 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115975A1 (de) * 2014-11-03 2016-05-19 Thyssenkrupp Ag Verfahren zur Herstellung von in Fraktionen unterschiedlicher Korngrößen separierten Gesteinskörnungen
CN105903540A (zh) * 2016-06-22 2016-08-31 中国葛洲坝集团第五工程有限公司 一种堆石坝垫层料的制备系统及方法

Also Published As

Publication number Publication date
US6032882A (en) 2000-03-07
BR9803316A (pt) 2000-03-08
DE19738228A1 (de) 1999-03-04
AU8305398A (en) 1999-03-18

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