EP0292739B1 - Procédé et installation pour le broyage de matière à broyer - Google Patents

Procédé et installation pour le broyage de matière à broyer Download PDF

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Publication number
EP0292739B1
EP0292739B1 EP88107072A EP88107072A EP0292739B1 EP 0292739 B1 EP0292739 B1 EP 0292739B1 EP 88107072 A EP88107072 A EP 88107072A EP 88107072 A EP88107072 A EP 88107072A EP 0292739 B1 EP0292739 B1 EP 0292739B1
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EP
European Patent Office
Prior art keywords
grinding
sifter
track
sifting
tailings
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
EP88107072A
Other languages
German (de)
English (en)
Other versions
EP0292739A3 (en
EP0292739A2 (fr
Inventor
Ludger Ing. Lohnherr (Grad.)
Walter Dipl.-Ing. Holz
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 EP0292739A2 publication Critical patent/EP0292739A2/fr
Publication of EP0292739A3 publication Critical patent/EP0292739A3/de
Application granted granted Critical
Publication of EP0292739B1 publication Critical patent/EP0292739B1/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
    • 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

Definitions

  • the invention relates to a method (according to the preamble of claim 1) and a system (according to the preamble of claim 5) for crushing brittle regrind.
  • the invention is therefore based on the object of designing a method (in accordance with the preamble of claim 1) and a system (in accordance with the preamble of claim 5) in such a way that the throughput of the system is considerably increased with comparatively low system complexity.
  • the plant illustrated in FIG. 1 for comminuting brittle ground material for example cement clinker, contains a roller mill 1, a classifier 2 arranged above it, a material bed roller mill 3, a bucket elevator 4, a fine material separator 5 and a number of other ones in connection with the Function of described system parts.
  • the roller mill 1 shown in its details from FIG. 2 has a horizontal grinding path 7 which rotates around the vertical axis 6 and on which grinding rollers 8, 9 are supported with pressure.
  • the grinding track 7 is driven by a drive motor 10 and a gear (not illustrated in detail) in the base of the roller mill 1.
  • An adjustable nozzle ring 11 is arranged on the circumference of the grinding track 7, through which an air flow (arrows 12) is fed to the grinding track 7.
  • the dynami arranged above the roller mill 1 cal classifier 2 contains a fixed (suitably adjustable) guide vane ring 15 and a sight basket 18 driven by a motor 17 via a shaft 16.
  • the shaft is supported at its lower end via radial struts 19.
  • the shaft 16 also carries above the viewing basket 18 a spreading plate 20, to which the material to be sifted is fed via nozzles 21, 22 from the bucket elevator 4 (arrow 23).
  • the classifier 2 has a funnel 24 below the guide vane ring 15, through which the grains can be guided back onto the grinding path 7 of the roller mill 1.
  • the raw material is fed onto the grinding track 7 via an opening 25 (arrow 26).
  • a semolina screw 27 At the lower end of the funnel 24 there is also connected a semolina screw 27, the speed of which can be regulated and which feeds an adjustable part of the semolina directly to the roller mill 3 (arrow 28 in FIG. 1).
  • the air stream carrying the fine material is discharged from the classifier 2 via a nozzle 29 (arrow 30).
  • the regrind to be crushed is the roller mill 1 fed from a silo 31 via a weigh feeder 32 and an air seal 33.
  • the ground material that has been comminuted sufficiently on the grinding path 7 is conveyed to the classifier 2 by the air flow.
  • the fine material leaving the classifier together with the air flow is separated in the separator 5.
  • the grains accumulating in the sifter 2 are partly returned to the grinding path 7 of the roller mill 1.
  • a further, adjustable portion of the semolina reaches the roller mill 3 directly via the semolina screw 27.
  • This material bed roller mill is also supplied with the regrind that falls down over the edge of the grinding track 7.
  • the rollers of which are pressed against one another at high pressure, the material undergoes comminution of the material bed with clear formation of agglomerates.
  • the regrind discharged from the roller mill 3 is conveyed upwards via the bucket elevator 4 and fed via a flap 34 either to the spreading plate 20 of the classifier 2 or to another purpose (vehicle 35) (if desired, this stream of material passed via the bucket elevator 4 can also be divided).
  • the agglomerates of the ground material formed in the roller mill 3 undergo deagglomeration.
  • the finished goods that already exist after the roller mill 3 has passed through are viewed in this way and are no longer fed to the roller mill 1 again.
  • the roller mill 1 is significantly relieved. This results in a significant reduction in pressure loss for the roller mill, which leads to significant energy savings in the pneumatic conveying of the ground material.
  • the bucket conveyor material is already largely dried, since in the roller mill 3 the ground material falling down over the edge of the grinding path 7 is ground together with the largely dried semolina (supplied via the semolina screw 27).
  • the pneumatic transport of the ground material in a conventional grinding plant using a roller mill takes up a relatively large proportion of the total that is used for grinding Use energy.
  • the regrind falling down through the nozzle ring 11 is subjected to further comminution by means of the material bed roller mill 3 and fed to the classifier 2 via the bucket elevator 4.
  • This regrind, which is fed directly to the classifier contains (depending on the type of material to be ground) up to 50% finished product. This portion of the material is thus removed from the pneumatic transport. This results in an up to 40% lower pressure loss of the grinding system, which results in a correspondingly high energy saving on the mill fan.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Claims (8)

1. Procédé de fractionnement de matière friable à l'aide d'une zone de broyage comprenant un plateau horizon­tal tournant de roulement (7), suivant lequel :
a) la matière retombant par-dessus le bord du pla­teau de roulement est transportée mécaniquement vers le haut et dirigée au moins en partie dans une zone de sépara­tion,
b) et les graviers provenant de la séparation sont renvoyés au moins en partie dans la zone de broyage, caractérisé en ce que :
c) la matière retombant par-dessus le bord du pla­teau de roulement (7) subit tout d'abord, avant la sépara­tion, un fractionnement dans l'emprise de deux cylindres, comprimés sous haute pression l'un contre l'autre, d'un broyeur correspondant (3).
2. Procédé selon la revendication 1, caractérisé en ce qu'une fraction réglable des graviers provenant de la séparation est dirigée directement sur le broyeur à cylindres (3) pour y être fractionnée avec la matière qui est retombée par-dessus par le bord du plateau de roulement (7).
3. Procédé selon la revendication 1, caractérisé en ce que la matière fractionnée dans le broyeur à cylindres (3) subit une désagrégation avant la séparation.
4. Procédé selon la revendication 1, suivant lequel un courant d'air réglable, dirigé par le bas sur le plateau horizontal rotatif de roulement (7) par une tuyère en an­neau (11), envoie pneumatiquement sur la zone de séparation la matière fractionnée sur le plateau de roulement, carac­térisé en ce que la consommation de courant électrique par la commande du broyeur à cylindres (3) est maintenue à une valeur constante par variation de la vitesse de l'air dans la tuyère en anneau (11).
5. Installation de fractionnement de matière friable, comprenant :
a) un broyeur à meules (1) et à plateau horizontal rotatif de roulement (7),
b) un séparateur (2) disposé au-dessus du broyeur à meules (1),
c) un élévateur à godets (4) qui transporte mécani­quement vers le séparateur (2) la matière retombée par­dessus le bord du plateau de roulement (7),
d) un dispositif (39) de production d'un courant d'air qui dirige pneumatiquement vers le séparateur (2) la matière fractionnée sur le plateau de roulement (7) et qui, après séparation des graviers, envoie la matière en parti­cules fines sur un collecteur (5) tandis que les graviers provenant du séparateur sont renvoyés au moins en partie dans le broyeur à meules (1), caractérisée par :
e) un broyeur (3) comprenant deux cylindres comprimés sous haute pression l'un contre l'autre et des­tinés à fractionner la matière retombée par-dessus le bord du plateau de roulement (7).
6. Installation selon la revendication 5, caracté­risée en ce que le broyeur à cylindres (3) est disposé entre le broyeur à meules (1) et l'élévateur à godets (4).
7. Installation selon la revendication 5, caracté­risée en ce qu'un organe de transport, conformé avanta­geusement en vis sans fin (27) à vitesse de rotation réglable, est raccordé à la trémie (24) du séparateur (2) par laquelle passent les graviers, ledit organe de trans­port pouvant diriger une fraction réglable des graviers directement dans le broyeur à cylindres (3).
8. Installation selon la revendication 5, caracté­risée en ce que le séparateur (2) est du type dynamique et comprend une sole rotative de distribution (20) qui est disposée au-dessus de la zone de séparation.
EP88107072A 1987-05-27 1988-05-03 Procédé et installation pour le broyage de matière à broyer Expired - Lifetime EP0292739B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3717976 1987-05-27
DE19873717976 DE3717976A1 (de) 1987-05-27 1987-05-27 Verfahren und anlage zur zerkleinerung von mahlgut

Publications (3)

Publication Number Publication Date
EP0292739A2 EP0292739A2 (fr) 1988-11-30
EP0292739A3 EP0292739A3 (en) 1989-11-15
EP0292739B1 true EP0292739B1 (fr) 1991-03-06

Family

ID=6328599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107072A Expired - Lifetime EP0292739B1 (fr) 1987-05-27 1988-05-03 Procédé et installation pour le broyage de matière à broyer

Country Status (8)

Country Link
US (1) US4889289A (fr)
EP (1) EP0292739B1 (fr)
BR (1) BR8802553A (fr)
CA (1) CA1301134C (fr)
DE (2) DE3717976A1 (fr)
DK (1) DK286288A (fr)
ES (1) ES2021408B3 (fr)
ZA (1) ZA883511B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11833520B2 (en) 2018-06-08 2023-12-05 Sms Group Gmbh Dry preparation of kaolin in the production of HPA

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815217A1 (de) * 1988-05-04 1989-11-16 Pfeiffer Christian Maschf Verfahren zur zerkleinerung von sproedem mahlgut
DE3921823A1 (de) * 1989-07-03 1991-01-17 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut
DE3926882A1 (de) * 1989-08-16 1991-02-21 Kloeckner Humboldt Deutz Ag Kreislaufmahlanlage zur mahlung von sproedem gut
US5129586A (en) * 1990-11-26 1992-07-14 Artemjev Vladimir K Compound grinding apparatus
JPH089016B2 (ja) * 1991-05-14 1996-01-31 川崎重工業株式会社 竪型ローラミルによる粉砕装置および粉砕方法
DE4118657A1 (de) * 1991-06-07 1992-12-10 Hosokawa Mikropul Ges Fuer Mah Einrichtung mit einer muehle und einem abschneider
DE4320025A1 (de) * 1993-06-17 1994-12-22 Krupp Polysius Ag Mahlanlage und Verfahren zum Mahlen und Sichten von sprödem Mahlgut
FR2710554B1 (fr) * 1993-09-28 1995-12-01 Fcb Procédé et installation pour le broyage de vieilles brasques et de produits similaires.
DE10336801B4 (de) * 2003-08-11 2015-02-12 Thyssenkrupp Industrial Solutions Ag Verfahren und Anlage zur Mahlung von Eisenerz bzw. Eisenerzkonzentrat
AU2007214252A1 (en) * 2006-02-07 2007-08-16 Horizon Science Pty Ltd Method for processing material to produce particles of a desired size
RU2535886C2 (ru) 2010-03-05 2014-12-20 ЛЁШЕ ГмбХ, Германия Способ обогащения шлаков, содержащих высококачественные стали, и шлаков, содержащих железо, для извлечения металлов
DE102012107127B4 (de) 2012-08-03 2017-08-17 Thyssenkrupp Industrial Solutions Ag Vertikalrollenmühle
CN103721823B (zh) * 2013-11-15 2015-04-29 中冶北方（大连）工程技术有限公司 自磨机顽石旁路破碎***
DE102016121926B4 (de) * 2016-11-15 2019-12-24 Neuman & Esser Process Technology Gmbh Mühle
EP3326720B1 (fr) * 2016-11-23 2021-11-03 Loesche GmbH Procédé de préparation de matières premières minérales multiphases
DE102017115994A1 (de) * 2017-07-17 2019-01-17 Thyssenkrupp Ag Zweistufiger Mahlkreislauf und Verfahren zur Herstellung eines gemahlenen Produkts mittels einer zweistufigen Mahlung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951347A (en) * 1972-09-21 1976-04-20 Polysius Ag Apparatus for crushing material containing particles that are hard to pulverize
SE410561B (sv) * 1973-04-13 1979-10-22 Boliden Ab Anleggning for autogen eller semiautogen malning av styckeformigt material, serskilt malm
DE2620461A1 (de) * 1976-05-08 1977-11-24 Kloeckner Humboldt Deutz Ag Mahltrocknungsanlage
DE2912635A1 (de) * 1979-03-30 1980-10-09 Peters Ag Claudius Gasstrom-walzen- oder kugelringmuehle
DE3202054A1 (de) * 1982-01-23 1983-08-04 Steag Ag, 4300 Essen Kohlenmahlanlage mit griessruecklauf und abtrennung von pyrit und bergen
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
DE3520069A1 (de) * 1985-06-04 1986-12-04 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur zweistufigen zerkleinerung
EP0220681B1 (fr) * 1985-10-29 1991-05-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Installation pour fractionner et broyer des matériaux fragiles et mouillés
DE3544798C2 (de) * 1985-10-29 1995-04-20 Kloeckner Humboldt Deutz Ag Einrichtung zur Zerkleinerung und Mahlung und Trocknung (Mahltrocknung) von feuchtem Gut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11833520B2 (en) 2018-06-08 2023-12-05 Sms Group Gmbh Dry preparation of kaolin in the production of HPA

Also Published As

Publication number Publication date
DE3717976A1 (de) 1988-12-08
DK286288D0 (da) 1988-05-25
DK286288A (da) 1988-11-28
ZA883511B (en) 1988-11-22
DE3861909D1 (de) 1991-04-11
EP0292739A3 (en) 1989-11-15
ES2021408B3 (es) 1991-11-01
EP0292739A2 (fr) 1988-11-30
BR8802553A (pt) 1988-12-20
US4889289A (en) 1989-12-26
CA1301134C (fr) 1992-05-19

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