EP0403778B1 - Procédé d'exploitation d'une installation de broyage pour matériau friable - Google Patents

Procédé d'exploitation d'une installation de broyage pour matériau friable Download PDF

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Publication number
EP0403778B1
EP0403778B1 EP19900108764 EP90108764A EP0403778B1 EP 0403778 B1 EP0403778 B1 EP 0403778B1 EP 19900108764 EP19900108764 EP 19900108764 EP 90108764 A EP90108764 A EP 90108764A EP 0403778 B1 EP0403778 B1 EP 0403778B1
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EP
European Patent Office
Prior art keywords
feed
roll press
semolina
discharge
classifier
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
EP19900108764
Other languages
German (de)
English (en)
Other versions
EP0403778A2 (fr
EP0403778A3 (fr
Inventor
Siegfried Strasser
Franz Göddecke
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.)
Deutz AG
Original Assignee
Deutz AG
Kloeckner Humboldt Deutz 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 Deutz AG, Kloeckner Humboldt Deutz AG filed Critical Deutz AG
Publication of EP0403778A2 publication Critical patent/EP0403778A2/fr
Publication of EP0403778A3 publication Critical patent/EP0403778A3/fr
Application granted granted Critical
Publication of EP0403778B1 publication Critical patent/EP0403778B1/fr
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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
    • B02C25/00—Control arrangements specially adapted for 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
    • B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
    • B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone

Definitions

  • the invention relates to a method for operating a system for comminuting or grinding brittle material, comprising a high-pressure roller press operated with high pressing force with material bed comminution of the material and a sifter downstream of the roller press, the coarse material discharge of which is recirculated to the material feed shaft of the roller press.
  • the feed material fed to the nip When operating the high-pressure roller press for compacting or for pressure treatment of the granular material, the feed material fed to the nip must be gripped by the rollers driven in opposite directions and drawn into the nip by friction.
  • the individual particles of the ground material are crushed in a bed, ie in a bed of material compressed between the two roller surfaces when the extremely high pressure is applied, so that one speaks of the so-called bed size reduction.
  • a large or high material feed chute arranged above the nip of the high-pressure roller press can, however, cause the following difficulties: Is the feed material given in the feed chute of the roller press at least partly very fine-grained, for example by adding fresh material to the fresh material. B.
  • a roller mill with material bed size reduction is not followed by a classifier, but a ball mill characterized by low energy utilization, which is not present at all in the method according to the invention.
  • the classifier sizes are divided in a quantity-controlled manner for recirculation on the one hand to the feed chute of the roll mill and on the other hand for the material inlet of the ball mill, by the sum of the quantity of fresh material plus the quantity of semolina and quantity to keep constant in the feed shaft of the roller mill.
  • the classifier sizes are recirculated directly into the feed chute of the roller mill without intermediate storage, which gives rise to the difficulties described at the outset when operating such a shredding system.
  • the invention has for its object to provide a method for operating a comminution system of the type mentioned, which manages with only minor system fluctuations during operation in the event of necessary control interventions to maintain the fill level of the roller press feed chute and which is quick when starting up the operation Structure of the grinding circuit guaranteed.
  • the level of material in the feed chute of the roller press is measured and, depending on the level of this level, there is a control intervention not on the quantity of fresh material fed to the feed chute, but on the discharge quantity metering device of the semolina bunker and thus the amount of semolina that flows from the semolina bunker to the metering device Roll press feed slot is promoted.
  • the fill level in the roller press feed hopper can be regulated to a constant level or quantity or within permitted limit values.
  • the amount of semolina recirculated by the classifier is about 3 to 8 times as large as the amount of fresh material, so that in conjunction with the intermediate semolina buffer, a more uniform control behavior of the entire crushing plant is achieved with less system fluctuations.
  • roller press feed chute in which it is ensured that it is always fully filled with goods, can remain comparatively small or low, so that the difficulties mentioned at the outset associated with high feed chutes, such as the venting problem, wall friction effects, segregation effects or the like, are reduced or avoided .
  • the roller press discharge is bypassed by the classifier and conveyed directly into the semolina bunker until the desired level or quantity is reached in the semolina bunker, after which the further operation of the crushing plant, the roller press discharge to the sifter and its semolina to the semolina bunker.
  • roller press feed hopper and the semolina bunker can be weighed for the purpose of level or quantity measurement.
  • the fill level or fill level in the semolina bunker can be regulated constantly or within permitted limit values, the regulating behavior preferably being set such that only small fluctuations in the quantity of fresh material occur.
  • the drawing shows schematically the flow diagram of a circular grinding for the production of z. B. cement.
  • the first stage of the cycle grinding consists of a high-pressure roller press (10), on the nip of which the feed material to be comminuted or ground, e.g. B. cement clinker and gypsum on metering belt scales (11 and 12), conveyor (13) and a comparatively small or low feed shaft (14) is abandoned.
  • the grain size of an essential part of the feed material can be larger than the width of the narrowest nip of z. B. 20 mm between the two press rolls, which can have a diameter of 900 mm, for example.
  • the pressing force of the rollers of the roller press (10) pressing the material is more than 2 MN / m roller length, for example 6 to 9 MN / m.
  • the feed material is shredded in the gap between the rollers by a combined single-grain shredder and material bed shredder.
  • the Schülpen (15) are on a conveyor (16), for. B. bucket elevator for the good entry of a classifier (17) transported into the spiral air (18) flows.
  • a rotating deagglomerator is arranged in the classifier (17), which can simultaneously be an impact crusher, and slugs (15) are in the classifier disagglomerated and sighted. It is also possible to connect an external deagglomerator / shredder (19) upstream of the classifier (17).
  • the classifying air / fines discharge of the classifier (17) leads via a cyclone separator (20), suction fan (21) and filter (22) to a suction fan (23) which frees the exhaust gas (24) from finished goods, ie finished cement (25, 26) subtracts the plant with a grain size of z. B. less than 90 um.
  • a partial flow of the exhaust gas flow leaving the induced draft fan (21) is recirculated as classifying air (18) into the classifier (17).
  • the coarse grain fraction (meal) (27) of the classifier (17) is first temporarily stored in a semolina bunker (28), which can be large in comparison to the roller press feed hopper (14) and which has a discharge quantity metering device such as, for. B. dosing belt weigher (29) which is connected upstream of the feed hopper (14).
  • the fill level (L 1) in the feed hopper (14) of the roller press (10) is measured and, depending on this fill level, a control unit (30) intervenes in the feed belt weigher (29) of the semolina hopper (28) in such a way that the fill level (L 1) in the roller press feed hopper (14) always at a constant height or regulated within permitted limits.
  • the fill level (L 2) in the semolina bunker (28) is also measured and, depending on this fill level, a control intervention on the fresh material quantity metering element (11) and / or fresh material quantity metering element (12) takes place via a control unit (31).
  • the fill level (L 2) in the semolina bunker (28) can be regulated to a constant level or at least within permitted limit values.
  • the feed hopper (14) and the semolina bunker (28) can be weighed by z. B. stored on load cells.
  • the roller press discharge (15) is so long via a material switch or via a broken line bypass (32) bypassing the sifter (17) conveyed directly into the semolina bunker (28) until the desired fill level (L 2) or fill level is reached in the semolina bunker, after which the roller press discharge (15), the sifter (17) and its semolina (27) the semolina bunker (28 ) are forwarded. Thanks to this start-up technology, the grinding circuit can be set up more quickly and the dosing belt scales can remain small.

Claims (2)

  1. Procédé d'exploitation d'une unité de broyage ou de concassage de produit friable, comprenant une presse à cylindres à haute pression (10) chargée par une force de pression élevée avec broyage en lit du produit et un séparateur (17) placé en aval de la presse à cylindres, dont le produit grossier (granulat) est recyclé dans la trémie d'alimentation de la presse à cylindre, caractérisé en ce que le granulat séparé (27) est stocké en intermédiaire dans une réserve à granulat (28) avec un organe doseur (29) de quantités broyées, qu'on mesure le remplissage (L1) dans la trémie d'alimentation en produit initial (14) de la presse à cylindres (10) et en fonction de ce niveau une action de régulation est déclenchée pour l'organe de doseur (29) de la réserve à granulat (28) et qu'au démarrage de l'unité le produit sortant de la presse à cylindres (15) évite le séparateur (17) par un by-pass (32) et est conduit directement dans la réserve à granulat (28) jusqu'à ce que le niveau ou la quantité de remplissage atteigne la valeur souhaitée (L2), après quoi le produit sortant de la presse à cylindres (15) est conduit au séparateur (17).
  2. Procédé selon la revendication 1, caractérisé en ce que pour mesurer les hauteurs ou les quantités de remplissage, on pèse la trémie d'alimentation de la presse à cylindres (14) ainsi que la réserve à granulat (28).
EP19900108764 1989-06-20 1990-05-10 Procédé d'exploitation d'une installation de broyage pour matériau friable Expired - Lifetime EP0403778B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893920005 DE3920005A1 (de) 1989-06-20 1989-06-20 Anlage zur zerkleinerung bzw. mahlung von sproedem gut und verfahren zum betrieb einer solchen anlage
DE3920005 1989-06-20

Publications (3)

Publication Number Publication Date
EP0403778A2 EP0403778A2 (fr) 1990-12-27
EP0403778A3 EP0403778A3 (fr) 1991-05-29
EP0403778B1 true EP0403778B1 (fr) 1994-07-20

Family

ID=6383060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900108764 Expired - Lifetime EP0403778B1 (fr) 1989-06-20 1990-05-10 Procédé d'exploitation d'une installation de broyage pour matériau friable

Country Status (3)

Country Link
EP (1) EP0403778B1 (fr)
DE (2) DE3920005A1 (fr)
DK (1) DK0403778T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103464240A (zh) * 2013-09-17 2013-12-25 中冶北方（大连）工程技术有限公司 高压辊磨机防偏析配矿系统
RU2568129C2 (ru) * 2010-06-16 2015-11-10 Кхд Хумболдт Ведаг Гмбх Установка дробления в замкнутом цикле с интегрированным буфером

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE4239602A1 (de) * 1992-11-25 1994-05-26 Krupp Polysius Ag Verfahren und Vorrichtung zur Zerkleinerung von Mahlgut
DE4334904A1 (de) * 1993-10-13 1995-04-20 Kloeckner Humboldt Deutz Ag Umlaufmahlanlage
DE4414367A1 (de) * 1994-04-25 1995-10-26 Krupp Polysius Ag Verfahren zur Regelung der einem Bunker zuzuführenden Gutmenge
DE19719445A1 (de) * 1997-05-07 1998-11-12 Krupp Polysius Ag Verfahren und Anlage zur Zerkleinerung von Mahlgut
DE19757431A1 (de) * 1997-12-23 1999-06-24 Kloeckner Humboldt Wedag Verfahren zum Betrieb einer Kreislaufmahlanlage zum Mahlen von sprödem Gut
DE102006049742A1 (de) * 2006-10-21 2008-04-24 Khd Humboldt Wedag Gmbh Sichter zum Sichten körnigen Gutes
CN103990538A (zh) * 2014-06-03 2014-08-20 南京凯盛国际工程有限公司 一种辊压机用备料装置
CN103990509A (zh) * 2014-06-03 2014-08-20 南京凯盛国际工程有限公司 一种新型辊压机
DE102014015549A1 (de) * 2014-10-22 2016-04-28 Thyssenkrupp Ag Mahlanlage zum Zerkleinern von Mahlgut sowie Verfahren zum Zerkleinern von Mahlgut
DE102017115856A1 (de) * 2017-07-14 2019-01-17 Maschinenfabrik Köppern Gmbh & Co. Kg Walzenpresse und Verfahren zur Bestimmung des Füllstandes
CN107930823A (zh) * 2017-11-13 2018-04-20 盐城吉达环保设备有限公司 一种串联选粉机粉磨系统工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE566774A (fr) *
DE2032736C3 (de) * 1970-07-02 1975-07-24 Polysius Ag, 4723 Neubeckum Verfahren zum Vermählen von grobkörnigen Mineralien
DE2620461A1 (de) * 1976-05-08 1977-11-24 Kloeckner Humboldt Deutz Ag Mahltrocknungsanlage
DE3520069A1 (de) * 1985-06-04 1986-12-04 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur zweistufigen zerkleinerung
DE3719251A1 (de) * 1987-06-10 1988-12-22 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2568129C2 (ru) * 2010-06-16 2015-11-10 Кхд Хумболдт Ведаг Гмбх Установка дробления в замкнутом цикле с интегрированным буфером
CN103464240A (zh) * 2013-09-17 2013-12-25 中冶北方（大连）工程技术有限公司 高压辊磨机防偏析配矿系统

Also Published As

Publication number Publication date
DE59006479D1 (de) 1994-08-25
DE3920005A1 (de) 1991-01-03
EP0403778A2 (fr) 1990-12-27
EP0403778A3 (fr) 1991-05-29
DK0403778T3 (da) 1994-10-31

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