EP0338231B1 - Installation de broyage - Google Patents

Installation de broyage Download PDF

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Publication number
EP0338231B1
EP0338231B1 EP89104062A EP89104062A EP0338231B1 EP 0338231 B1 EP0338231 B1 EP 0338231B1 EP 89104062 A EP89104062 A EP 89104062A EP 89104062 A EP89104062 A EP 89104062A EP 0338231 B1 EP0338231 B1 EP 0338231B1
Authority
EP
European Patent Office
Prior art keywords
mill
arrangement
fine
fine material
branch
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
EP89104062A
Other languages
German (de)
English (en)
Other versions
EP0338231A3 (en
EP0338231A2 (fr
Inventor
Osbert Richard Dipl.-Ing. Knobloch
Ludger Dipl.-Ing. Kimmeyer
Norbert Heese
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
Application filed by Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0338231A2 publication Critical patent/EP0338231A2/fr
Publication of EP0338231A3 publication Critical patent/EP0338231A3/de
Application granted granted Critical
Publication of EP0338231B1 publication Critical patent/EP0338231B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B02C17/1845—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone with return of oversize material to crushing 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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
    • B02C17/189—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone with return of oversize material to crushing 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
    • B02C21/00—Disintegrating plant with or without drying of the material

Definitions

  • the invention relates to a grinding plant, in particular for the production of a mineral end product, such as. B. cement, according to the preamble of claim 1.
  • the regrind that is discharged from the fine grinding mill is largely directly conveyed to a dynamic air classifier provided as the main classifier, i.e. a wind classifier rotating viewing elements, while the remaining, somewhat finer portion of the ground material is discharged together with an exhaust gas stream, in particular an exhaust air stream, from the mill, the associated exhaust gas line leading to a fine material separating device from which the separated fine material is discharged as the end product.
  • a dynamic air classifier provided as the main classifier, i.e. a wind classifier rotating viewing elements
  • an exhaust gas stream in particular an exhaust air stream
  • the static air classifiers used in these known grinding plants are essentially made up of a conical outer jacket, an inner cone with coarse material discharge, an adjustable guide vane ring attached to the upper end of the inner cone, and an immersion tube for forwarding the exhaust gas stream laden with fine material.
  • air flow classifiers used in these known grinding plants are essentially made up of a conical outer jacket, an inner cone with coarse material discharge, an adjustable guide vane ring attached to the upper end of the inner cone, and an immersion tube for forwarding the exhaust gas stream laden with fine material.
  • the invention is based on the object of proposing a grinding plant of the type required in the preamble of claim 1, which, with a relatively simple structure and good energy utilization of the mill, makes it possible to produce a fine end product, in particular cement, whose grain size distribution is within very wide limits is adjustable.
  • the static air classifier is formed by a deflection classifier (instead of the static air classifier described above in the form of a conical air flow classifier) in this grinding system designed according to the invention, this area of the grinding system not only results in a structurally simple structure, but also an air classifier is used , whose separation limit is very clearly shifted towards the rough towards the dynamic air classifier device (main sighting), so that here, on the one hand, a considerably coarser fine material can be produced compared to the static wind classifier used previously, which - as will be explained - above all creates the possibility to significantly influence the grain size distribution of the end product, while on the other hand a practically fine goods-free coarse goods is delivered, which can be returned directly to the mill, ie the dynamic air classifier device is no longer burdened with this coarse material (semolina) and the sharp prospect of this coarse material favors extremely good energy utilization during further comminution in the mill.
  • the fine material produced in the deflector and separated in the separating device is fed via the other branch of the setting switch of the visible material feed to the dynamic air classifier device (together with the main part of the discharged from the mill and by the Conveyor brought in). In the latter case, only the fine material coming from the dynamic air classifier device is used as the end product.
  • the illustrated grinding system contains a mill 1, a static wind sifter designed as a deflection sifter, a fine material separating device 3 arranged downstream of this deflection sifter 2, a dynamic wind sifter 4 provided as a main sifter and a conveyor device preferably formed by an elevator 5 as a conveying connection between the mill 1 and the dynamic air classifier 4.
  • the mill 1 can be any mill suitable for the fine grinding of cement or the like, which - as drawn - can be a tube or drum mill or, in particular, a material bed roller mill.
  • This mill 1 contains on its one mill spigot a grist feed device 6 and a connection 7 for the supply of gas, in particular air (dash-dotted arrow 8), and it has their other mill spigot a discharge device for crushed ground material and mill exhaust air.
  • this discharge device 9 is designed in such a way that the majority of the ground material falls down, so that it can be fed to the lower inlet 5a of the elevator 5 via a conveyor connection 10.
  • This fine material separating device 3 can be designed in any suitable manner, a fine material filter 3 being used in the illustrated exemplary embodiment, to which a fan 12 which generates the suction and removes the cleaned exhaust air is assigned and which has a fine material drain 13, for example a cellular wheel sluice or the like .
  • This fine material drain 13 is followed by an adjustment switch, preferably in the form of a two-way switch 14 with a first branch 14a and a second branch 14b.
  • the first branch 14a of this switch 14 connects the fine material filter 3 to a finished product discharge device, for example a conveyor trough 15, while on the other hand the second branch 14b connects the fine material filter 3 to the visible material supply 4a of the dynamic air classifier 4 by this second branch 14b to the Elevator 5 is connected, the upper discharge end 5b of which is connected to the visible material feed 4a of the dynamic air classifier 4.
  • a second setting switch preferably also in the form of a two-way switch 16, is provided between the upper discharge end 5b of the elevator 5 and the visible material feed 4a of the dynamic air classifier 4, from which a first branch 16a to the visible material feed 4a and a second branch 16b to the exhaust pipe 11 im Area in front of the deflector 2 is connected.
  • a single dynamic air classifier 4 is provided as the dynamic air classifier device.
  • this can be designed in any suitable embodiment of a dynamic wind classifier known per se, so that it is suitable for a very sharp wind separation (main sighting); it can in particular be designed as a circulating air air classifier with a built-in rotor and with an internal or, as illustrated, an external circuit, or it can also be operated with up to 100% fresh air supply, that is to say largely or completely without circulating air.
  • two dynamic windsifters known per se can also be arranged — instead of a single one — which are set to different finenesses, for example; in addition, a single dynamic wind sifter can be provided which can be operated with a periodically changed setting, ie with so-called "sifting pendulum".
  • this dynamic wind sifter device in this example the wind sifter 4, has at least one coarse material discharge (semolina discharge) 4b and at least one fine material discharge (finished material discharge) 4c, which is provided at the lower end of an associated fine material separator 4d.
  • the coarse material discharge 4b is connected via a semolina line 17 to the material feed device 6 of the mill 1, while the fine material discharge 4c is connected via a fine material line 18 to the front channel 15 for discharging the finished goods.
  • this deflection sifter 2 is switched directly into the mill exhaust gas line 11, so that this exhaust gas line in one in front (below) the deflector 2 located first line section 11a and a second line section 11b located behind the deflector 2 and connecting the latter to the fine material filter 3.
  • This deflection sifter 2 is designed for a relatively rough separation limit and has an inner deflection chamber 19 which forms a viewing chamber or a coarse material separation space.
  • an inner deflection chamber 19 which forms a viewing chamber or a coarse material separation space.
  • a coarse material outlet (semolina outlet) 20 for example provided with sluice flaps, which is connected directly to the material feeding device 6 via a semolina line 21.
  • the mill exhaust gas stream loaded with regrind flows into the deflection chamber 19 via an inflow opening 23 provided in the one side wall 22 of the deflection sifter 2.
  • This deflection wall 24 is preferably an essentially flat deflection flap which can be adjusted in its position relative to the inflow opening 23 via a horizontal pivot axis 25.
  • This pivot axis 25 is preferably arranged directly under the housing cover 26 of the deflector 2.
  • a second deflection flap 27 with a likewise horizontal one can be located directly in the area of the inflow opening 23 and at a sufficient distance from the first deflection flap 24 Pivot axis 28 may be provided, but this pivot axis 28 is provided at the lower end of the deflection flap 27 or at the lower deflection edge of the inflow opening 23.
  • the two deflection flaps 24 and 25, which can be pivoted relative to one another, can act on the mill exhaust gas flow flowing into the deflection sifter 2 in such a way that the selectivity of this deflection sifter 2 can be adjusted within limits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)

Claims (5)

  1. Installation de broyage, en particulier de production d'un produit final minéral, tel que par exemple du ciment, comprenant
    a) Un broyeur (1) comprenant un dispositif (6) de déversement de produit et une décharge (9) de produit de broyage,
    b) un dispositif dynamique (4) de séparation à air prévu pour la séparation principale avec un seuil élevé de séparation, comprenant une arrivée (4a) de produit, au moins une décharge de produit en grosses particules et une décharge de produit fin (4b, 4c) et qui est monté en aval du broyeur (1), l'arrivée du produit à séparer étant reliée par un dispositif de transport (5) à la décharge (9) de produit broyé et la décharge de produit en grosses particules de ce dispositif de séparation à air étant reliée au dispositif (6) de déversement de produit dans le broyeur,
    c) un conduit (11) de gaz d'évacuation, qui relie le broyeur (1) à un dispositif (3) de séparation de produit fin comportant une décharge de produit fin et dans lequel est monté un séparateur à air statique (2) qui comprend une décharge (20) de produit en grosses particules qui a été séparé du courant de gaz évacué du broyeur,
    caractérisée par la combinaison des particularités suivantes :
    d) le séparateur à air statique qui est prévu est un séparation à déviation (2) qui est conçu pour un seuil relativement grossier de séparation et qui comprend un orifice d'admission (23) placé dans une cloison latérale (22) de son envelopppe, ainsi qu'une chambre interne de déviation (19) dans laquelle est monté au moins un déflecteur (24, 27) sensiblement parallèle à et placé à distance de l'orifice d'admission ;
    e) la sortie (20) de produit en grosses particules de séparateur à déviation (2) communique avec le dispositif (6) de déversement de produit dans le broyeur (1) ;
    f) un aiguillage régulateur (14) comprenant un premier embranchement (14a) et un second embranchement (14b) et monté en aval de la décharge (13) de produit fin du dispositif (3) de séparation de produit fin relie ce dispositif de séparation d'une part au dispositif (15) d'évacuation de produit final et d'autre part à l'arrivée (4a) de produit dans le dispositif dynamique (4) de séparation à air.
  2. Installation de broyage selon la revendication 1, caractérisée en ce qu'un second aiguillage régulateur (16) est prévu dans la liaison entre le dispositif de transport (5) et l'arrivée (4a) de produit dans le dispositif dynamique (4) de séparation à air, un premier embranchement (16a) de ce second aiguillage étant raccordé à l'arrivée (4a) de produit à séparer et un second embranchement (16b) de cet aiguillage étant raccordé au conduit (11) de gaz d'évacuation, en un emplacement situé en amont du séparateur à déviation (2).
  3. Installation de broyage selon la revendication 2, dans laquelle le dispositif de transport qui relie le broyeur au dispositif dynamique (4) de séparation à air est un transport mécanique à dénivellation, en particulier un élévateur, caractérisée en ce que le second embranchement (14b) de l'aiguillage régulateur (14) monté en aval de la décharge (13) de produit fin du dispositif (3) de séparation de produit fin est relié au transporteur mécanique à dénivellation (5).
  4. Installation de broyage selon la revendication 2, caractérisée en ce que le déflecteur monté dans la chambre de déviation (19) du séparateur à déviation (2) est formé d'un clapet sensiblement plan de déviation (24, 27), dont la position relative par rapport à l'orifice d'admission (23) est réglable au moyen d'un axe horizontal de pivotement (25, 28).
  5. Installation de broyage selon la revendication 1, caractérisée en ce que le dispositif de séparation de matière fine qui est prévu est un filtre (3) de matière fine combiné avec un ventilateur (12) des gaz d'évacuation.
EP89104062A 1988-04-22 1989-03-08 Installation de broyage Expired - Lifetime EP0338231B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3813661A DE3813661A1 (de) 1988-04-22 1988-04-22 Mahlanlage
DE3813661 1988-04-22

Publications (3)

Publication Number Publication Date
EP0338231A2 EP0338231A2 (fr) 1989-10-25
EP0338231A3 EP0338231A3 (en) 1990-08-29
EP0338231B1 true EP0338231B1 (fr) 1992-11-04

Family

ID=6352698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104062A Expired - Lifetime EP0338231B1 (fr) 1988-04-22 1989-03-08 Installation de broyage

Country Status (2)

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EP (1) EP0338231B1 (fr)
DE (2) DE3813661A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307230A1 (de) * 1993-03-08 1994-09-15 Krupp Polysius Ag Verfahren und Anlage zur Gutbettzerkleinerung von sprödem Mahlgut
AT410651B (de) 2001-04-17 2003-06-25 Anton Kahlbacher Schneekette
CN103127995A (zh) * 2013-03-11 2013-06-05 南京凯盛国际工程有限公司 一种粉状物料制备装置及其方法
CN108025314B (zh) 2015-07-16 2020-02-18 德国莱歇公司 用于制备和活化生料的方法和设备
CN105381856A (zh) * 2015-12-16 2016-03-09 河南天冠企业集团有限公司 一种淀粉质原料的粉碎系统
CN105536964B (zh) * 2015-12-18 2017-08-25 山东中粉建材股份有限公司 一种复合胶凝材料生产线及其装备系统
CN107988834B (zh) * 2016-10-27 2019-09-10 中粮集团有限公司 一种木质纤维素的前处理方法
CN110893373A (zh) * 2019-11-26 2020-03-20 成都市玄戈自动化控制技术有限公司 一种各级配产量可调控的机砂碎石生产系统
CN112524614B (zh) * 2020-12-07 2023-04-07 大连建华污泥处理有限公司 危险废物水泥窑协同处置预处理配伍系统
CN115254321B (zh) * 2022-07-12 2023-07-07 青岛海湾化工设计研究院有限公司 一种用于烟气脱硫的湿式球磨机

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US1714312A (en) * 1924-03-31 1929-05-21 Joseph E Kennedy Disintegrating apparatus
DE974442C (de) * 1953-03-21 1960-12-29 Tongeren N V Bureau Van Vorrichtung zum Zerlegen des in einem Medium suspendierten Staubes in Grob- und Feinkorn
US2980347A (en) * 1957-04-18 1961-04-18 Hischmann Maschinenfabrik Fa G Apparatus for hard disintegrating and sifting
DE1212911B (de) * 1964-04-29 1966-03-24 Fives Lille Cail Vorrichtung zur pneumatischen Aufbereitung von Feststoffteilchen
DE1607576A1 (de) * 1968-02-28 1970-09-24 Polysius Ag Verfahren zum Betrieb einer Fremdkraftmuehle
CH505651A (de) * 1968-03-21 1971-04-15 Escher Wyss Ag Vorrichtung zum Mahlen und Sichten eines körnigen Gutes, insbesondere von Zement
JPS5247183B2 (fr) * 1972-09-04 1977-11-30
US3865242A (en) * 1972-12-15 1975-02-11 Combustion Eng Upstream classifier for a multi-separator
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
DE3644341A1 (de) * 1986-12-23 1988-07-07 Krupp Polysius Ag Verfahren und anlage zur zweistufigen zerkleinerung von sproedem mahlgut

Non-Patent Citations (1)

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Title
CEMENT-DATA-BOOK, 3. Auflage 1985, Bauverlag GmbH Wiesbaden, Seiten 94, 95 und 257 *

Also Published As

Publication number Publication date
DE58902592D1 (de) 1992-12-10
DE3813661A1 (de) 1989-11-02
EP0338231A3 (en) 1990-08-29
EP0338231A2 (fr) 1989-10-25

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