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EP0525423A1 - Dispositif et procédé de broyage de matériau avec une granulométrie variable - Google Patents

Dispositif et procédé de broyage de matériau avec une granulométrie variable Download PDF

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Publication number
EP0525423A1
EP0525423A1 EP92111150A EP92111150A EP0525423A1 EP 0525423 A1 EP0525423 A1 EP 0525423A1 EP 92111150 A EP92111150 A EP 92111150A EP 92111150 A EP92111150 A EP 92111150A EP 0525423 A1 EP0525423 A1 EP 0525423A1
Authority
EP
European Patent Office
Prior art keywords
classifier
fresh
air
outlet
regrind
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
EP92111150A
Other languages
German (de)
English (en)
Other versions
EP0525423B1 (fr
Inventor
Ludger Lohnherr
Walter Dipl.-Ing. Holz
Werner Dipl.-Ing. Schöneich
Ludger Dipl.-Ing. Kimmeyer
Bernhard Zigan
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 EP0525423A1 publication Critical patent/EP0525423A1/fr
Application granted granted Critical
Publication of EP0525423B1 publication Critical patent/EP0525423B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a device (according to the preamble of claim 1) and a method (corresponding to the preamble of claim 8) for comminuting regrind of different grain sizes.
  • the invention is based on the object of improving a device of the type required in the preamble of claim 1 and a method according to the preamble of claim 8 in such a way that by relatively simple measures at least an additional increase in performance when comminuting the ground material can be reached.
  • the after-viewing device can be designed, for example, in the form of a material feed chute with an obliquely downwardly extending floor, to which at least one viewing air inlet duct which is adjustable in terms of its flow cross section is connected.
  • An after-vision device designed in this way can be parallel, if necessary. H. be provided regardless of the feed device for the fresh regrind.
  • the feed device for fresh regrind to the shredding device is also designed in the form of a fresh material feed chute with a sloping bottom, to which at least one sight air inlet duct is connected, then it can also be particularly advantageous if the size outlet of the classifier is connected to this fresh material feed chute via a conveying device and this fresh material feed chute simultaneously forms the after-inspection device for at least the largest proportion of the coarse material returned from the classifier to the comminution device or for all coarse material returned.
  • the shredding device and the sifter are arranged as separate devices, that further as a sifter both a dynamic wind sifter (with rotating viewing elements) and a static wind sifter (without rotating viewing elements) and that also as a shredding device each for the shredding of regrind different grain sizes, in particular suitable for more or less brittle mineral material, can be provided.
  • the comminution device is designed in the form of a known vertical-axis roller mill with grinding tools (grinding rollers or grinding balls) that roll on a rotatable grinding plate, and the separator is in a manner known per se directly above the roller mill arranged in a common device housing with this roller mill.
  • a mechanical conveyor preferably a screw conveyor, a simple material chute or the like, connects the Greisses outlet of this air classifier with the indulgence device, which can be formed in a particularly compact design of the overall device according to the above-described embodiment by the fresh material feed chute .
  • the comminution device according to the invention is provided as a particularly preferred, extremely compact structural unit comprising a comminution device in the form of a vertical axis roller mill (roller mill) 1 known per se and an air classifier 2 arranged directly above it (in a form known per se) .
  • the roller mill 1 and the air classifier 2 arranged above it are - as is also known per se - housed in a common device housing 3.
  • the roller mill 1 which is only illustrated schematically, has, in the usual manner, a grinding table 5 which is rotatably driven about the vertical device axis 4 and has an upper, annular grinding path 5a on which stationary grinding rollers 6 roll, so that supplied grinding material 7 is crushed between grinding path 5a and grinding rollers 6 .
  • the air classifier 2 is formed by a static air classifier, which in the usual way has ring-shaped guide vanes 8, a coarse material funnel 9, an upper fine material outlet 10 and - at the lower end of the coarse material funnel 9 - Is provided with a lower Gresse outlet 11, which, if necessary, can also have a pendulum flap - not illustrated here.
  • the fresh ground material to be comminuted (arrow 12) is fed to the roller mill 1 via a fresh material feed chute 13 which is assigned to the roller mill 1 in such a way that the ground material arrives at the grinding path 5a.
  • This fresh material feed chute 13 has a sloping bottom 13a, to which two sifting air inlet channels 14 and 15 are connected in this example.
  • This sifting air inlet channels 14, 15 can be regulated or adjusted in their flow cross section, for example with the aid of sliders, so that the amount of sifting air and the effectiveness of the sifting air on the regrind 1 to be fed to the roller mill 1 can be regulated accordingly.
  • an after-inspection device is arranged in the area between the grit outlet 11 of the air classifier 2 and the point of re-introduction of coarse material to be returned (roller) into the roller mill 1 for the purpose of viewing fine parts from this coarse material.
  • the grit outlet 11 is first connected to the fresh material feed chute 13 via a screw conveyor 16 (or else via another suitable mechanical conveyor device), this screw conveyor 16 - in the millbase conveying direction (arrow 12) considered - in the area in front of the sight air inlet (inlet channels 14 and 15) into the fresh material feed chute 13 is connected to the latter.
  • the fresh material feed chute 13 provided with the visible air inlet channels 14 and 15 thus simultaneously forms a kind of caution device for the fresh regrind (arrow 12) and rechecking device for the coarse material to be returned from the air classifier 2 to the roller mill 1 (arrow 17). .
  • a gas stream (arrows 18), preferably furnace gas, is surrounded by a grinding plate 5 by means of a fan (not illustrated in more detail) connected to the fine material outlet 10 of the device housing 3 the nozzle ring 19 is sucked in and passed to the wind sifter 2 together with the sufficiently comminuted ground material discharged over the edge of the grinding plate 5 (arrows 20).
  • coarse material (arrows 17) precipitates and is returned to the grinding path 3 of the roller mill 1 via the coarse material funnel 9, the grit outlet 11, the screw conveyor 16 and the material feed chute 13 (together with the fresh regrind), while the fine material (Arrows 21) leaves the air classifier 2 through the nozzle-like fine material outlet 10.
  • both a caution of the freshly fed ground material (arrow 12) and an indulgence of the coarse material returned via the screw conveyor 16 ( Arrow 17) is carried out in such a way that all of the fine material portions (arrows 23) aligned by the resulting cross flow can be fed directly to the wind sifter 2 together with the ground material sufficiently comminuted in the roller mill 1.
  • a roller mill 1 'with a vertical device axis 4' is provided as the crushing device and a wind sifter 2 'is provided directly above the roller mill 1' in a common device housing 3 'as a sifter, with fresh regrind (arrow 12') the roller mill 1 'is fed via a fresh material feed chute 13' of the same type, the bottom 13a 'of which is in turn provided with controllable viewing air inlet channels 14' and 15 '.
  • the wind sifter 2 ' is a dynamic wind sifter which has viewing elements which can be driven to rotate about the vertical device axis 4' and have a rotating spreading disc 2'a .
  • this air classifier 2 ' in turn has a fine material outlet 10', a coarse material funnel 9 'and a grit outlet 11'.
  • the screw conveyor 16 'does not connect the spout 11' of the air classifier 2 'to the fresh material feed chute 13' which also acts as a viewing device, but rather the screw conveyor 16 'preferably only conveys an adjustable proportion of that from the semolina - Outlet 11 'coarse material flowing out - according to arrow 25 - to a separately installed lifting device (as a mechanical lifting conveyor) 26, which this coarse material portion - possibly together with a portion of the comminuted material falling down from the grinding table 5 - to a material inlet nozzle 27 for the air classifier 2 'promotes, which in this embodiment also forms the viewing device for the portion of coarse material to be checked (portion of portion).
  • the coarse material parts conveyed out of the device housing 3 'by the screw conveyor 16' thus pass from the lifting elevator good outlet 26a via the material inlet nozzle 27 to the spreading plate 2'a of the air classifier 2 ', so that the mechanically guided and overlapped coarse material part in this dynamic air classifier 2' Forbearance is experienced, which in turn enables the desired relief of the roller mill from already comminuted fine material (finished product). As indicated in FIG.
  • a corresponding proportion of coarse material can be thrown outwards from the feed material thrown outwards from the spreading plate 2'a and can be returned directly to the grinding table 5'a along the inner wall of the device housing 3 ' , while other coarse material portions are routed centrally downwards via the coarse material funnel 9 'to the semolina outlet 11'.
  • the portion of coarse material which is not conveyed out of the device housing 3 'by the screw conveyor 16' can be fed directly to the grinding track 5'a, but possibly also to an indulgence in the fresh material feed chute 13 '.
  • the inlet spout 27 of the air classifier 2 ' opens out over the annular spreader plate 2'a
  • the inlet spout or a further inlet spout of the air classifier 2' in the at 27a indicated type can open directly into the ring-shaped upper air classifier outer area 30 through which the ground material-air mixture (arrows 20 ') conveyed from the grinding plate 5'a reaches this air classifier 2'.
  • this second crop inlet connection 27a can be connected to the lifting elevator crop outlet 26a via a connecting line or partial line 31.
  • first material inlet nozzle 27 and the second material inlet nozzle 27a can expediently be offset from one another in the circumferential direction (for example by approximately 1800). ).
  • the fines are selected in a particularly advantageous manner by the upward gas flow from the recycled semolina, and a particularly good distribution of the grinding material on the grinding plate and thereby a smoother running of the roller mill 1 'can be achieved, and there is also the possibility in an advantageous manner to retrofit existing classifiers without spreading disc, i.e. static wind classifiers, easily and inexpensively.
  • the freeze outlet 11 ' can be followed by an adjustable quantitative distribution device which, on the one hand, can be connected to the grinding plate 5' (if necessary via the Fresh material feed chute 13 ') and on the other hand - via the screw conveyor 16' and the lifting device 26 - is connected to the dynamic wind sifter 2 ', which also acts as an indulgence device.
  • an adjustable quantity distribution device can be designed in any suitable manner. In the example according to FIG.
  • the screw conveyor 16 ' has a drive 28 which can be regulated in such a way that a more or less large overflow of material occurs at the inlet end 16'a of the screw conveyor 16' and this overflowing portion of coarse material then passes to the grinding table 5 'or if necessary, the fresh material feed chute 13 'is fed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP92111150A 1991-07-23 1992-07-01 Dispositif et procédé de broyage de matériau avec une granulométrie variable Expired - Lifetime EP0525423B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124416 1991-07-23
DE4124416A DE4124416A1 (de) 1991-07-23 1991-07-23 Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung

Publications (2)

Publication Number Publication Date
EP0525423A1 true EP0525423A1 (fr) 1993-02-03
EP0525423B1 EP0525423B1 (fr) 1994-12-28

Family

ID=6436843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111150A Expired - Lifetime EP0525423B1 (fr) 1991-07-23 1992-07-01 Dispositif et procédé de broyage de matériau avec une granulométrie variable

Country Status (6)

Country Link
US (1) US5381968A (fr)
EP (1) EP0525423B1 (fr)
DE (2) DE4124416A1 (fr)
DK (1) DK0525423T3 (fr)
ES (1) ES2067274T3 (fr)
ZA (1) ZA925238B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0842702A1 (fr) * 1996-11-15 1998-05-20 Joseph E. Dipl.-Ing. Doumet Procédé et broyeur à rouleaux pour le séchage et le broyage de matière d'alimentation humide
EP2604345A1 (fr) * 2011-12-16 2013-06-19 Lafarge Equipement de broyage
CN104368528A (zh) * 2014-11-17 2015-02-25 王树波 一种高精度的控制粒度分布的分离器
LU103197B1 (de) * 2023-09-21 2025-03-21 Thyssenkrupp AG Vertikalrollenmühle
WO2025061554A1 (fr) 2023-09-21 2025-03-27 thyssenkrupp Polysius GmbH Laminoir centrifuge vertical

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DE4212097A1 (de) * 1992-04-10 1993-10-14 Boenisch Dietmar Verfahren und Vorrichtung zum Regenerieren von Giessereisand
DE4323587C2 (de) * 1993-07-14 1996-07-18 Loesche Gmbh Verfahren und Einrichtung zum Zerkleinern von Material unterschiedlicher Körnung
AT401741B (de) * 1993-08-19 1996-11-25 Thaler Horst Dipl Ing Windsichter
US5676318A (en) * 1994-03-09 1997-10-14 Nec Corporation Method of recovering valuable substances from printed circuit board
DE19504868A1 (de) * 1995-02-14 1996-08-22 Krupp Polysius Ag Verfahren und Vorrichtung zur Zerkleinerung von feuchtem mineralischem Gut
US5819947A (en) * 1996-01-29 1998-10-13 Sure Alloy Steel Corporation Classifier cage for rotating mill pulverizers
US5957300A (en) * 1996-01-29 1999-09-28 Sure Alloy Steel Corporation Classifier vane for coal mills
CA2230363C (fr) * 1998-02-24 2005-07-05 Arnold Schmidt Machines et methodes de transformation du grain
US6038987A (en) * 1999-01-11 2000-03-21 Pittsburgh Mineral And Environmental Technology, Inc. Method and apparatus for reducing the carbon content of combustion ash and related products
US6820829B1 (en) * 2000-02-25 2004-11-23 Exportech Company, Inc. Method and apparatus for separating material
US6409108B1 (en) 2000-12-22 2002-06-25 Sure Alloy Steel Corporation Damage-resistant deflector vane
CA2344511A1 (fr) 2001-04-19 2002-10-19 First American Scientific Corp. Methode de recuperation de metaux precieux et de mineraux lourds
RU2224602C2 (ru) * 2002-05-06 2004-02-27 Открытое акционерное общество "ТЯЖМАШ" Инерционный сепаратор для мельниц
RU2255808C1 (ru) * 2003-12-26 2005-07-10 Восточно-Сибирский государственный технологический университет Вихревой аппарат для охлаждения сыпучих материалов
DE102004027128A1 (de) * 2004-06-03 2005-12-22 Polysius Ag Vorrichtung zum Sichten von körnigem Gut in wenigstens drei Kornfraktionen
DE102005054209B4 (de) * 2005-11-14 2014-05-28 Loesche Gmbh Wälzmühle
DE102006039775A1 (de) * 2006-08-24 2008-02-28 Khd Humboldt Wedag Gmbh Sichteinrichtung zum Sichten körnigen Gutes und Kreislaufmahlanlage mit Einschaltung einer solchen Sichteinrichtung
RU2337595C1 (ru) * 2007-01-09 2008-11-10 Государственное образовательное учреждение высшего профессионального образования Восточно-Сибирский государственный технологический университет Вихревой аппарат для охлаждения сыпучих материалов
RU2341331C1 (ru) * 2007-03-13 2008-12-20 Государственное образовательное учреждение высшего профессионального образования Восточно-Сибирский государственный технологический университет Вихревой аппарат для охлаждения сыпучих материалов
DE102007013029A1 (de) * 2007-03-19 2008-09-25 Roland Dr. Nied Windsichter-Betriebsverfahren und Windsichter
ES2393646B2 (es) * 2008-01-24 2014-09-10 Mitsubishi Heavy Industries, Ltd. Estructura de molino triturador.
DE102009015037B4 (de) 2009-03-26 2011-03-31 Loesche Gmbh Wälzmühle
DE102009051226A1 (de) * 2009-10-29 2011-05-19 Süd-Chemie AG Verfahren und Vorrichtung zur Vermahlung von Aufgabematerial mit hohem Wassergehalt mittels Pendelmühlen
US7946516B1 (en) * 2009-12-31 2011-05-24 Flsmidth A/S Feed chute for vertical roller mill
JP5645468B2 (ja) * 2010-05-14 2014-12-24 三菱重工業株式会社 バイオマス粉砕装置及びバイオマス・石炭混焼システム
DE102011014592A1 (de) * 2011-03-21 2012-09-27 Loesche Gmbh Wälzmühle
CN102784702A (zh) * 2011-05-15 2012-11-21 盐城吉达机械制造有限公司 一种并联粉磨工艺及其设备
BR112014022216B1 (pt) * 2012-03-07 2021-06-29 Electricity Generation And Retail Corporation Método e aparelho para separar matéria particulada
KR101466887B1 (ko) * 2013-06-07 2014-12-04 한양대학교 산학협력단 인쇄회로기판의 금속 단체분리장치
US10016762B2 (en) * 2015-06-16 2018-07-10 Arvos Raymond Bartlett Snow Llc Vertical bowl mill for producing coarse ground particles
CN106423414B (zh) * 2015-08-21 2018-10-23 南京凯盛国际工程有限公司 物料粉磨系统
CN106466653B (zh) * 2015-08-21 2018-09-25 南京凯盛国际工程有限公司 新型立磨装置
US10512917B2 (en) * 2016-03-08 2019-12-24 Mineworx Technologies Ltd. Mill
US10500592B2 (en) * 2016-03-24 2019-12-10 Schenck Process Llc Roller mill system with rejects removal system
CN108339656A (zh) * 2018-02-23 2018-07-31 烟台龙源电力技术股份有限公司 一种燃煤锅炉制粉系统及其动态分离器
DE102019200191A1 (de) * 2018-06-08 2019-12-12 Sms Group Gmbh Trockenaufbereitung von Kaolin bei der Herstellung von HPA
CN112645063B (zh) * 2020-09-03 2022-04-22 江西省农业科学院农业经济与信息研究所 一种稻谷回收初选一体机

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US3951347A (en) * 1972-09-21 1976-04-20 Polysius Ag Apparatus for crushing material containing particles that are hard to pulverize
EP0112022A2 (fr) * 1982-12-16 1984-06-27 F.L. Smidth & Co. A/S Procédé et installation pour le broyage de matériaux pulvérulents ou granulaires
EP0370267A2 (fr) * 1988-11-22 1990-05-30 Krupp Polysius Ag Dispositif pour l'alimentation de matériaux vers un élément d'installation

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EP0053755B1 (fr) * 1980-12-08 1986-07-30 Edwin Eisenegger Procédé et installation pour le broyage à impact
US4498633A (en) * 1982-11-04 1985-02-12 Williams Patent Crusher And Pulverizer Company Apparatus for processing coal
US4550829A (en) * 1983-12-23 1985-11-05 Quickie Manufacturing Corporation Spring clip for push broom
DE3418197A1 (de) * 1984-05-16 1985-11-21 Krupp Polysius Ag, 4720 Beckum Mahlverfahren sowie mahlanlage
FR2591127B1 (fr) * 1985-12-11 1989-10-06 Stein Industrie Broyeur cylindrique rotatif pour la preparation d'un materiau pulverulent en deux qualites differentes.
DE3609229A1 (de) * 1986-03-19 1987-09-24 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von sproedem mahlgut
GB2214106B (en) * 1987-12-24 1991-06-26 Smidth & Co As F L Vertical roller mill
DE3801229A1 (de) * 1988-01-18 1989-07-27 Krupp Polysius Ag Mahlverfahren sowie mahlanlage

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US3951347A (en) * 1972-09-21 1976-04-20 Polysius Ag Apparatus for crushing material containing particles that are hard to pulverize
EP0112022A2 (fr) * 1982-12-16 1984-06-27 F.L. Smidth & Co. A/S Procédé et installation pour le broyage de matériaux pulvérulents ou granulaires
EP0370267A2 (fr) * 1988-11-22 1990-05-30 Krupp Polysius Ag Dispositif pour l'alimentation de matériaux vers un élément d'installation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0842702A1 (fr) * 1996-11-15 1998-05-20 Joseph E. Dipl.-Ing. Doumet Procédé et broyeur à rouleaux pour le séchage et le broyage de matière d'alimentation humide
EP2604345A1 (fr) * 2011-12-16 2013-06-19 Lafarge Equipement de broyage
CN104368528A (zh) * 2014-11-17 2015-02-25 王树波 一种高精度的控制粒度分布的分离器
LU103197B1 (de) * 2023-09-21 2025-03-21 Thyssenkrupp AG Vertikalrollenmühle
WO2025061554A1 (fr) 2023-09-21 2025-03-27 thyssenkrupp Polysius GmbH Laminoir centrifuge vertical

Also Published As

Publication number Publication date
US5381968A (en) 1995-01-17
ZA925238B (en) 1993-03-31
DE59201077D1 (de) 1995-02-09
ES2067274T3 (es) 1995-03-16
DK0525423T3 (da) 1995-04-24
DE4124416A1 (de) 1993-01-28
EP0525423B1 (fr) 1994-12-28

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