EP0370267B1 - Vorrichtung zur Materialzuführung zu einem Anlagenteil - Google Patents

Vorrichtung zur Materialzuführung zu einem Anlagenteil Download PDF

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Publication number
EP0370267B1
EP0370267B1 EP89120028A EP89120028A EP0370267B1 EP 0370267 B1 EP0370267 B1 EP 0370267B1 EP 89120028 A EP89120028 A EP 89120028A EP 89120028 A EP89120028 A EP 89120028A EP 0370267 B1 EP0370267 B1 EP 0370267B1
Authority
EP
European Patent Office
Prior art keywords
air inlet
roller mill
feed chute
material feed
separator
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
EP89120028A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0370267A3 (de
EP0370267A2 (de
Inventor
Dietmar Holsiepe
Ludger Lohnherr
Hans-Dieter Dipl.-Ing. Grudno
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 EP0370267A2 publication Critical patent/EP0370267A2/de
Publication of EP0370267A3 publication Critical patent/EP0370267A3/de
Application granted granted Critical
Publication of EP0370267B1 publication Critical patent/EP0370267B1/de
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
    • B02C23/02—Feeding devices
    • 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
    • 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
    • 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
    • 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 roller mill with a material feed chute which feeds the material to be comminuted by the force of gravity of the grinding path of the roller mill and with a classifier arranged above the grinding path, the material which is discharged over the edge of the grinding path and is sufficiently comminuted by means of a fan through the roller mill and the Sifter-sucked gas flow can be conveyed to the sifter.
  • a roller mill of this type is known, for example, from Duda Cement Data-Book, 3rd edition (1985), pp. 240 to 243.
  • a roll crusher is also known, to which the regrind to be crushed is fed by an air stream.
  • a sifting air flow is used here, which distributes the ground material to be ground in the longitudinal direction of the roller crusher, so that coarse particles of the ground material are ground over a greater part of the length of the roller crusher than fine particles of the ground material.
  • a coal powder delivery shaft which contains a Y-shaped separation point, the pulverized coal being conveyed pneumatically upwards, while heavy foreign bodies fall down against the conveying air flow.
  • US-A-2 681 768 discloses a device for the pneumatic supply of regrind to a hammer mill, a conveying air flow taking the regrind located in the upper region of a shaft with it.
  • the invention has for its object to design a device of the type required in the preamble of claim 1 so that a substantial increase in performance of the roller mill is achieved.
  • At least one air inlet duct is connected to the bottom of the material feed chute, through which an air stream which looks out the fine particles from the material to be shredded can be introduced into the material feed chute, whereby the fine particles already found in the material feed chute together with that of the Roller mill sufficient comminuted material can be fed directly to the classifier.
  • the fine particles contained in the material to be shredded are therefore already in the material feed chute, i.e. Before reaching the grinding path of the roller mill, it is sighted out of the feed material by means of an air stream and fed directly to the classifier, bypassing the roller mill.
  • the inventive precaution of the material to be shredded in the material feed chute also bears to a significant relief of the classifier, which results in a considerable increase in performance and an improvement in the selectivity.
  • the roller mill schematically illustrated in FIG. 1 with an integrated classifier contains, in a housing 1, a roller mill 2 (only shown schematically) (with an annular grinding path 3 and drive 4) and a static classifier 5 with guide vanes 6, coarse material cone 7 and pendulum flap 8.
  • the material to be shredded is fed to the roller mill 2 via a material feed chute 9 to which two air inlet ducts 10, 11 are connected in the region of the bottom of the sloping lower chute part.
  • the lower inlet openings of these air inlet channels 10 and 11 are provided with slides, as shown in FIGS. 2 and 3 in detail.
  • the air inlet opening 10 a of the upper air inlet duct 10 is limited by means of two laterally (arrows 12) adjustable sliders 13, 14. By adjusting these sliders 13, 14, not only the size but also the spatial position of the effective air inlet opening 10a can be set.
  • the size of the air inlet opening 11a of the lower air inlet duct 11 can be adjusted by means of a slide 15 which extends over the entire width of this air inlet duct 11.
  • a gas stream (arrow 16), preferably furnace gas, is drawn in through a nozzle ring 18 by means of a fan connected to the nozzle 17 of the housing 1 and, together with the one discharged over the edge of the grinding track 3, is sufficiently comminuted Well directed to classifier 5 (arrows 19).
  • the coarse material precipitates in the classifier 5 and is returned to the grinding path 3 via the cone 7 and the pendulum flap 8, while the fine material leaves the classifier through the nozzle 17 (arrow 20).
  • two air streams which are fed through the air inlet ducts 10 and 11 are now sucked through the feed material passing through the material feed chute 9 (arrow 21).
  • the fine and ultra-fine fractions contained in the feed material are detected by these sifting air flows (arrows 22, 23) and, together with the material sufficiently comminuted by the roller mill 2, are fed directly to the classifier 5.
  • the fine and ultra-fine fractions, which have already been aligned in the material supply chute 9 in this way, do not take the detour via the roller mill in this way, but are fed directly to the finished product via the classifier 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Disintegrating Or Milling (AREA)
  • Drying Of Solid Materials (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Pulverization Processes (AREA)
EP89120028A 1988-11-22 1989-10-27 Vorrichtung zur Materialzuführung zu einem Anlagenteil Expired - Lifetime EP0370267B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839419 1988-11-22
DE3839419A DE3839419A1 (de) 1988-11-22 1988-11-22 Vorrichtung zur materialzufuehrung zu einem anlagenteil

Publications (3)

Publication Number Publication Date
EP0370267A2 EP0370267A2 (de) 1990-05-30
EP0370267A3 EP0370267A3 (de) 1991-03-20
EP0370267B1 true EP0370267B1 (de) 1993-06-23

Family

ID=6367640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120028A Expired - Lifetime EP0370267B1 (de) 1988-11-22 1989-10-27 Vorrichtung zur Materialzuführung zu einem Anlagenteil

Country Status (9)

Country Link
US (1) US4982905A (es)
EP (1) EP0370267B1 (es)
KR (1) KR930008282B1 (es)
BR (1) BR8905860A (es)
DE (2) DE3839419A1 (es)
DK (1) DK580089A (es)
ES (1) ES2042935T3 (es)
MX (1) MX172501B (es)
ZA (1) ZA898257B (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU656334B2 (en) * 1990-10-30 1995-02-02 Fukutaro Kataoka Fluidized crusher/drier for use in a fluidized crusher/drier system
DE4116683A1 (de) * 1991-05-22 1992-11-26 Nied Roland Verfahren und vorrichtung fuer die windsichtung
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung
US5819947A (en) * 1996-01-29 1998-10-13 Sure Alloy Steel Corporation Classifier cage for rotating mill pulverizers
DE19651103A1 (de) * 1996-12-09 1998-06-10 Krupp Polysius Ag Verfahren und Wälzmühle zum Zerkleinern von relativ hartem, sprödem Mahlgut
US6446888B1 (en) * 2000-11-08 2002-09-10 Robert M. Williams, Sr. Grinding apparatus with vertical static separators
DE102006049742A1 (de) * 2006-10-21 2008-04-24 Khd Humboldt Wedag Gmbh Sichter zum Sichten körnigen Gutes
US8657221B2 (en) 2008-01-24 2014-02-25 Mitsubishi Heavy Industries, Ltd. Roller mill structure
US7946516B1 (en) * 2009-12-31 2011-05-24 Flsmidth A/S Feed chute for vertical roller mill
DE102012107127B4 (de) 2012-08-03 2017-08-17 Thyssenkrupp Industrial Solutions Ag Vertikalrollenmühle
US10016762B2 (en) * 2015-06-16 2018-07-10 Arvos Raymond Bartlett Snow Llc Vertical bowl mill for producing coarse ground particles
CN107243388B (zh) * 2017-05-17 2019-04-16 柳州博海科技有限公司 一种用于奶茶粉块的磨粉机
CN109261975A (zh) * 2018-10-19 2019-01-25 赣州海创钨业有限公司 一种钨粉生产用下料装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681768A (en) * 1954-06-22 Apparatus for feeding grain to
US1679997A (en) * 1928-08-07 coal pulverizing machine
US1024832A (en) * 1911-10-05 1912-04-30 E B Cox Mfg Co Apparatus for treating grain.
DE903163C (de) * 1951-06-05 1954-02-01 Soest Ferrum Appbau G M B H Kugelmuehle
DE1938772C3 (de) * 1969-07-30 1980-06-12 Krupp Polysius Ag, 4720 Beckum Walzmuhle
FR2082301A5 (es) * 1970-03-10 1971-12-10 Camail Jean
US3951347A (en) * 1972-09-21 1976-04-20 Polysius Ag Apparatus for crushing material containing particles that are hard to pulverize
IT1007568B (it) * 1973-01-24 1976-10-30 Buehler Ag Geb Telaio per rulli con un dispositivo di alimentazione e con un condotto di immissione pneumatico
US3998396A (en) * 1973-12-17 1976-12-21 Continental Oil Company Scalping apparatus for a low profile two-roll crusher
US3934826A (en) * 1974-06-05 1976-01-27 American Pulverizer Company Coal crusher
US4498633A (en) * 1982-11-04 1985-02-12 Williams Patent Crusher And Pulverizer Company Apparatus for processing coal
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
GB2181971B (en) * 1985-10-29 1988-11-09 Smidth & Co As F L Vertical roller mill
SU1414460A1 (ru) * 1986-12-19 1988-08-07 Красноярский Филиал Государственного Всесоюзного Научно-Исследовательского Института Строительных Материалов И Конструкций Им.П.П.Будникова Помольна установка
DE3863803D1 (de) * 1987-03-24 1991-08-29 Mitsubishi Heavy Ind Ltd Walzenmuehle.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Duda, CEMENT DATA-BOOK, 3. Auflage (1985), S. 240-243 *

Also Published As

Publication number Publication date
KR930008282B1 (ko) 1993-08-27
EP0370267A3 (de) 1991-03-20
MX172501B (es) 1993-12-17
BR8905860A (pt) 1990-06-12
DK580089D0 (da) 1989-11-17
DK580089A (da) 1990-05-23
KR900007479A (ko) 1990-06-01
EP0370267A2 (de) 1990-05-30
DE3839419A1 (de) 1990-05-23
US4982905A (en) 1991-01-08
DE58904791D1 (de) 1993-07-29
ZA898257B (en) 1990-07-25
ES2042935T3 (es) 1993-12-16

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