EP0164328B1 - Innenauskleidung für Kugelmühlen - Google Patents

Innenauskleidung für Kugelmühlen Download PDF

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Publication number
EP0164328B1
EP0164328B1 EP85890079A EP85890079A EP0164328B1 EP 0164328 B1 EP0164328 B1 EP 0164328B1 EP 85890079 A EP85890079 A EP 85890079A EP 85890079 A EP85890079 A EP 85890079A EP 0164328 B1 EP0164328 B1 EP 0164328B1
Authority
EP
European Patent Office
Prior art keywords
grooves
balls
webs
inner lining
depressions
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
Application number
EP85890079A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0164328A1 (de
Inventor
Erich Pichlmaier
Manfred Zoller
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.)
Maschinenfabrik Liezen Te Liez GmbH
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0164328A1 publication Critical patent/EP0164328A1/de
Application granted granted Critical
Publication of EP0164328B1 publication Critical patent/EP0164328B1/de
Expired 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
    • 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
    • B02C17/22—Lining for containers

Definitions

  • the invention relates to an inner lining for cylindrical ball mills.
  • Such cylindrical ball mills are called ball tube mills.
  • the inner linings of such ball tube mills usually consist of armor plates. If the inner lining is smooth, there is only a point contact between the balls and the inner lining. The grinding effect between the balls and the inner lining is therefore very low and the grinding effect between the balls in the ball cluster is also low because the balls are only slightly circulated due to the smooth inner lining. Since the balls are in direct contact with the inner lining, there is considerable noise.
  • the balls in the ball mill cause the balls to brake and the balls are rotated slightly during rotation, so that there is a slight shift in the ball pile, which is not sufficient for a grinding effect in the ball pile.
  • a grinding effect therefore mainly arises only between the balls and the grooves of the inner lining.
  • Such training is referred to as groove armor.
  • the top balls are thrown and are supposed to hit the ball train.
  • the impacting balls result in an impact effect, whereby the coarse fraction of the ground material is broken up.
  • the balls rest on the inner lining with point contact. There is therefore little or no grinding effect between balls and inner lining.
  • the balls are in direct contact with the bare inner lining and there is therefore a lot of noise.
  • the object of the invention is to improve the grinding effect.
  • the invention consists essentially in the combination of the features known per se that the inner lining has grooves running approximately in the circumferential direction with webs lying between the grooves, and that elevations and / or depressions arranged transversely to the circumferential direction are provided.
  • the grooves can run exactly in the circumferential direction or approximately in the circumferential direction along helical lines, such that the base of the grooves and / or the webs have the elevations and / or depressions, and that the base of the grooves and / or the ridges of the webs in the direction of the Grooves are wavy.
  • the inventive design combines the advantages of an inner lining with grooves running in the circumferential direction with the advantages of an inner lining equipped with lifting elements, without having to accept the disadvantages of these two designs.
  • the balls and the ground material are raised higher in the direction of rotation of the ball mill by the elevations and / or depressions on the groove base and / or on the webs.
  • the balls and the material to be ground in the pebble are therefore more strongly layered, so that the less fine grinding in the pebble is improved.
  • the top balls are thrown onto the ball train during rotation.
  • the ground material is coarsely ground between the balls in the ball pile and the ground material is finely ground in the grooves between the inner lining and the balls.
  • the wave-shaped design of the grooved material and / or the ridges of the webs enables the balls to be raised higher, but at the same time offers the advantage that the balls run smoothly in the groove profiles and without any disruptive vibrations and therefore complete fine grinding takes place in the grooves. The end result is improved grinding, protection of the inner lining and noise reduction.
  • the arrangement is preferably such that the elevations and / or depressions or the waves on the base of the groove run in the same direction with the elevations and / or depressions on the ridges of the webs and on the same he the inner lining.
  • the advantage here is that the depth of the groove remains approximately the same despite the elevations and depressions, so that the balls remain guided in the grooves.
  • the grooves have the same transverse profile over the entire circumference of the inner lining. There is thus a uniform grinding of the ground material in the grooves over the entire length of the grooves.
  • the intermediate layer between balls and grooves formed by the regrind is not torn.
  • the noise-absorbing layer formed by the regrind is maintained and the wave form of the base of the groove and the ridges of the webs ensure that the balls are carried along during rotation.
  • the balls striking the ball train naturally produce a certain amount of noise, but this noise development is also considerably reduced by the layer of the ground material located in the grooves.
  • the inner lining is usually composed of individual plates, so-called armor plates.
  • the plates adjoining one another in the circumferential direction result in a type of arch effect, by means of which these plates are held in their position.
  • the plates are divided in the region of the elevations or wave crests.
  • the plates naturally have a greater thickness in the area of the wave crests than in the area of the wave valleys. Because the plates are subdivided in the area of the wave crests, the greater thickness of the plates improves the arching effect.
  • FIG. 1 shows a section along line II of FIG. 2
  • FIG. 2 shows a plan view in the direction of arrow 11 of FIG. 1
  • FIG. 3 shows a section along line III - 111 of FIG. 2.
  • 4 and 5 show a tube mill with the inner lining, wherein FIG. 4 shows a cross section along line IV-IV of FIG. 5 and FIG. 5 shows a longitudinal section along line V-V of FIG. 4.
  • the outside 1 of the armor plates 2 is cylindrical with a radius which corresponds to the inner radius of curvature of the housing of the ball tube mill.
  • the armor plate 2 On the inside 3, the armor plate 2 has grooves 4, the base 5 of which is corrugated in the circumferential direction. In the area of the wave crests 6, the plate 2 has a greater thickness than in the area of the wave troughs 7.
  • the ridges 8 of the webs 9 existing between the grooves 4 are likewise corrugated and run in the cross section according to FIG. 1 equidistant from the groove base 5.
  • the transverse profile 10 the grooves 4 are the same over the entire circumference of the inner lining or over the entire length of the groove 4.
  • the web 9 ' is only half the width, since these side edges adjoin the adjacent armor plate 2.
  • the end faces 12 which delimit the armor plate 2 in the circumferential direction are inclined and run radially to the axis of the ball tube mill. When these armor plates 2 are joined together, there is a vault effect, which is particularly pronounced in that the end faces 12 are arranged in the region of the wave crests 6.
  • this bore 13 is a hole for screwing the armor plates 2 to the wall of the ball tube mill. In view of the great strength of the armor plates 2 in the region of the wave crests 6, this bore 13 can be omitted, the armor plates 2 being fixed in the housing of the ball tube mill solely by the arch effect.
  • the inner lining 16 which is composed of the armor plates 2 shown in FIGS. 1 to 3, is located in the drum-shaped housing 14, which is driven to rotate in the direction of the arrow 15. These armor plates 2 cover the entire inner wall of the drum-shaped housing 14.
  • the grooves 4 extend over the entire inner circumference and the lifting elements are formed by the wave crests 6 and wave troughs 7, which cause the ball cluster 17 to be carried in the direction of rotation 15.
  • the surface on which the pebbles 17 turn when they are rotating is indicated by a dashed line 18.
  • the pebble is raised to a height of approximately 19. The balls fall from this height 19 and fall on the ball train indicated by 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Milling Processes (AREA)
EP85890079A 1984-05-10 1985-03-26 Innenauskleidung für Kugelmühlen Expired EP0164328B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1542/84 1984-05-10
AT0154284A AT379762B (de) 1984-05-10 1984-05-10 Innenauskleidung fuer kugelmuehlen

Publications (2)

Publication Number Publication Date
EP0164328A1 EP0164328A1 (de) 1985-12-11
EP0164328B1 true EP0164328B1 (de) 1988-07-13

Family

ID=3515663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890079A Expired EP0164328B1 (de) 1984-05-10 1985-03-26 Innenauskleidung für Kugelmühlen

Country Status (8)

Country Link
US (1) US4936519A (enrdf_load_stackoverflow)
EP (1) EP0164328B1 (enrdf_load_stackoverflow)
JP (2) JPS60244349A (enrdf_load_stackoverflow)
AT (1) AT379762B (enrdf_load_stackoverflow)
BR (1) BR8502178A (enrdf_load_stackoverflow)
DE (1) DE3563694D1 (enrdf_load_stackoverflow)
ES (1) ES295240Y (enrdf_load_stackoverflow)
IN (1) IN160369B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741187A (zh) * 2014-07-23 2015-07-01 宋鲁江 一种改良的阶梯衬板

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391425B (de) * 1986-09-18 1990-10-10 Voest Alpine Ag Innenauskleidung fuer zylindrische kugelmuehlen
AT392018B (de) * 1986-11-03 1991-01-10 Voest Alpine Ag Panzerung fuer kugelmuehlen
AT393234B (de) * 1987-08-20 1991-09-10 Boehler Gmbh Mahlverfahren fuer kugelrohrmuehlen, kugelrohrmuehle und mahlplatte
DD298601A5 (de) * 1989-09-15 1992-03-05 Forschungsinstitut Fuer Aufbereitung,De Innenauskleidung fuer rohrkugelmuehlen
AU654608B2 (en) * 1992-01-10 1994-11-10 Envirotech Pumpsystems, Inc. Grinding mill, lining and associated method of manufacture
ES2128924B1 (es) * 1996-02-14 2000-01-16 Fundiciones Del Estanda S A Sistema de blindaje para molinos tubulares.
US20030062372A1 (en) * 2001-10-02 2003-04-03 Metso Minerals (Trelleborg) Ab Wear-resistant lining element and wear lining made thereof
CN104668058B (zh) * 2013-12-03 2017-08-18 陈乔 一种新型球磨机衬板及其衬板安装方法
CN116510841A (zh) * 2023-03-20 2023-08-01 白银有色集团股份有限公司 一种有效降低球磨机噪音的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741604A (en) * 1924-03-11 1929-12-31 Barratt Frederick Reeves Tube-mill shell liner
US2268661A (en) * 1939-07-07 1942-01-06 Kennedy Van Saun Mfg & Eng Tube mill
US2967671A (en) * 1958-06-26 1961-01-10 Falla Fernando Classifying liner for ball mills
US2998201A (en) * 1959-03-31 1961-08-29 American Brake Shoe Co Grinding mills
AT283092B (de) * 1965-04-08 1970-07-27 Boehler & Co Ag Geb Innenauskleidung von Kugelmühlen
JPS5435464A (en) * 1977-08-24 1979-03-15 Kubota Ltd Crusher
DE7914232U1 (de) * 1979-05-17 1979-08-23 Paul Hettich & Co, 4983 Kirchlengern Mit einer glastuer versehener schrank
DD154425A3 (de) * 1980-02-22 1982-03-24 Paul Clemens Innenauskleidung von rohrkugelmuehlen
AT380409B (de) * 1981-01-30 1986-05-26 Ver Edelstahlwerke Ag Kugelmuehle
AT373792B (de) * 1981-01-30 1984-02-27 Ver Edelstahlwerke Ag Kugelmuehle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741187A (zh) * 2014-07-23 2015-07-01 宋鲁江 一种改良的阶梯衬板

Also Published As

Publication number Publication date
EP0164328A1 (de) 1985-12-11
ES295240Y (es) 1987-08-16
AT379762B (de) 1986-02-25
US4936519A (en) 1990-06-26
IN160369B (enrdf_load_stackoverflow) 1987-07-11
DE3563694D1 (en) 1988-08-18
BR8502178A (pt) 1986-01-07
ES295240U (es) 1986-12-16
JPH02129259U (enrdf_load_stackoverflow) 1990-10-24
ATA154284A (de) 1985-07-15
JPS60244349A (ja) 1985-12-04

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