EP2874749A2 - Comminution de matière à broyer dans un broyeur vertical à rouleaux - Google Patents

Comminution de matière à broyer dans un broyeur vertical à rouleaux

Info

Publication number
EP2874749A2
EP2874749A2 EP13724591.6A EP13724591A EP2874749A2 EP 2874749 A2 EP2874749 A2 EP 2874749A2 EP 13724591 A EP13724591 A EP 13724591A EP 2874749 A2 EP2874749 A2 EP 2874749A2
Authority
EP
European Patent Office
Prior art keywords
grinding
roller
bed
width
vertical roller
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
EP13724591.6A
Other languages
German (de)
English (en)
Other versions
EP2874749B1 (fr
Inventor
Pedro Guerrero Palma
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
ThyssenKrupp Industrial Solutions 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 ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp Industrial Solutions AG
Publication of EP2874749A2 publication Critical patent/EP2874749A2/fr
Application granted granted Critical
Publication of EP2874749B1 publication Critical patent/EP2874749B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
    • 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
    • B02C15/007—Mills with rollers pressed against a rotary horizontal disc
    • 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
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

Definitions

  • the invention relates to a method for comminuting regrind in a vertical roller mill and a vertical roller mill, wherein the millbase is fed before at least one grinding roller for forming a grinding bed and comminuted between a grinding table and the at least one grinding roller.
  • the material distribution on the grinding table depends on many factors (regrind, rotational speed, grinding bed height, feeding point, etc.), some of which also influence each other.
  • DD 106 953 AI and DE 44 43 099 AI processes for comminution of millbase are known in a vertical roller mill, wherein the millbase is fed to at least one grinding roller to form a grinding bed and comminuted between a grinding table and the at least one grinding roller. Due to the geometry of the grinding roller, a grinding bed of different height is formed across the width of the grinding roller.
  • DD 225 634 AI discloses a roller mill with a feeder, with the most uniformly designed grinding bed can be achieved.
  • Grobgutanteil essentially forms an overlying second Mahlgut für in the grinding bed.
  • the material to be ground is fed centrally, while in a second embodiment, a separate feed takes place before each grinding roller.
  • the invention is therefore based on the object of improving the method for comminuting ground material in a vertical roller mill and the vertical roller mill required for this purpose so that vibrations are further reduced and the grinding efficiency is increased.
  • the material to be ground is fed to at least one grinding roller to form a grinding bed and comminuted between a grinding table and the at least one grinding roller, wherein the forming grinding bed is adjusted across the width of the grinding roller by means of a feed device with different heights becomes.
  • the inventive vertical roller mill for comminuting material to be ground has a grinding table and at least one co-rotating with the grinding table grinding roller and a feeder to supply the material to be ground to form a grinding bed of at least one grinding roller.
  • the feeding device is designed to set a different height of the forming grinding bed across the width of the grinding roller.
  • the grinding roller is already partly closed, an increase in efficiency can be achieved if the grinding bed falls down towards the edge of the grinding table and thus the radially inner area is first used. If, on the other hand, the vertical mill is to be operated with minimal energy consumption, a grinding bed with a uniform height across the width of the grinding roller will be set. Thus, the height of the grinding bed can be optimally optimized to the desired mode of operation, which reduces the vibrations in the respective mode of operation and increases the grinding efficiency.
  • the feed device is preferably designed so that the height of the grinding bed can be adjusted so that it can be continuously or stepwise changed in the direction of the Mahltellerrand. Furthermore, it can be provided that the width of the grinding bed is limited by the feeder and adapted to the width of the grinding roller.
  • the material to be ground can also optionally be placed in the middle of the grinding table and passed over guide means to the feeder or is fed directly to each feed roller associated with each feed roller.
  • the height of the grinding bed over the width of the grinding roller as a function of at least one operating parameter, for example, the smoothness or the power consumption, during the crushing continuously readjusted.
  • a suitable control and regulating device provided, which is in communication with at least one measuring device for detecting the operating parameter and the feed device.
  • the feeding device is preferably formed by one or two, most preferably by three or more slides, which are arranged side by side over the width of the grinding rollers and at the same distance from the grinding plate are adjustable differently.
  • the feed device has lateral boundaries for the grinding bed, the distance of which corresponds approximately to the width of the grinding roller.
  • the pointing to the middle of the grinding plate lateral boundary may have a Mahlgutzu Kunststoffö réelle.
  • a stripping device is further provided for stripping the ground material to be ground from the grinding table.
  • vertical roller mills come in particular an airflow mill or a muller into consideration.
  • FIG. 1 is a schematic plan view of a vertical roller mill according to a first embodiment
  • FIG. 2 shows a side view of the vertical roller mill according to FIG. 1
  • FIG. 3 shows a schematic plan view of a vertical roller mill according to a second exemplary embodiment
  • FIG. 4 is a side view of the vertical roller mill of FIG. 3,
  • 5 is a schematic representation of the feeder with three sliders, which are set so as to give a uniform in height grinding bed
  • 6 is a schematic representation of the feeder with three sliders, which are set so that there is a rising in height to the grinding edge grinding bed
  • FIG. 7 is a schematic representation of the feeder with three slides, which are set so that there is a drop in height to the grinding edge grinding bed,
  • FIG. 8 is a schematic representation of the feeder with a slide, which are set so that there is a drop in height to the grinding edge grinding bed,
  • Fig. 9 is a schematic representation of a pile up before the grinding roller
  • Fig. 10 is a schematic representation of a by the feeder in his
  • the dargados in Figures 1 and 2 vertical roller mill has a grinding table 1 and a plurality of grinding rollers 2.
  • a drive 3 is exemplified for one of the grinding rollers 2.
  • at least two grinding rollers, preferably all grinding rollers are driven, unless the vertical roller mill has only a Mahltellerantrieb.
  • each grinding roller 2 is associated with a feed device 4, with the aid of regrind 5 to form a grinding bed 50 of the grinding roller 2 is fed.
  • It consists essentially of a shaft 40 with a material feed opening 41 and lateral boundaries 401, 402, which limit the width of the grinding bed 50, and whose distance corresponds substantially to the width b of the grinding roller 2.
  • three slides 43, 44, 45 are provided, which are arranged side by side over the width of the grinding rollers and with the same or different distance to the grinding table 1 are adjustable and thereby define the Auslassöffhung 42.
  • the position of the slide 43, 44, 45 of FIG. 1 is illustrated again in a front view in Fig. 6.
  • the slides 43, 44, 45 are individually or in the group by suitable drives 46, 47, 48, for example by hydraulic cylinders, individually adjustable.
  • the height of the grinding bed 50 forming according to FIG. 6 is adjusted by the slides so that they increase stepwise in the direction of the grinding plate edge 10. Such a position of the slide is especially interesting when the vertical roller mill to be operated with maximum throughput.
  • Fig. 7 shows a position of the slide 43-45, in which the height of the grinding bed 50 increases inwardly. Such a position is useful when the inner regions of the tread of the grinding roller 2 are already more worn.
  • the slides 43, 44, 45 are set at the same distance to the grinding table. It thus turns also a uniform in height grinding bed, which allows an energetically favorable operation of the vertical roller mill.
  • the slides can also be adjusted so that the height of the grinding bed drops or increases from the center to the inside and outside. Such a position of the slide is especially interesting when the axial load and thus axial vibrations of the grinding roller to be reduced.
  • FIG. 8 also shows an embodiment with a single slider 49 which extends over the entire width b of the grinding roller and the lower edge 490 can be aligned according to the trainees grinding bed 50 straight or obliquely to the grinding table 1.
  • the height can increase or decrease continuously over the width of the grinding roller.
  • the sliders 43, 44, 45 and 49 not only have the task to adjust the height of the grinding bed across the width of the grinding roller, but also ensure that the grinding roller 2 is supplied only as much ground material that no material shaft 51 before the grinding roller 2, as shown in FIG. 9, but rather a situation as shown in FIG. 10 is illustrated.
  • the formation of a material shaft 51 would otherwise lead to significant vibration and deterioration of smoothness.
  • a stripping device 7 is provided for deriving the ground grind 5 from the grinding table 1.
  • each grinding roller 2 is associated with a feeder 4, which in turn has a plurality of juxtaposed slide 43, 44, 45 or a single slide 49, by means of which the height of the grinding bed 50 can be adjusted across the width of the grinding roller.
  • the feeder here also has a kind of shaft 40, the material inlet opening 41, however, is not arranged at the upper end of the shaft, but in the direction of the center of the grinding plate lateral boundary 401.
  • the grinding material 5 fed in via the feeding device 6 in the center of the grinding table 1 passes through the centrifugal force effect of the rotating grinding plate 1 to the material introduction openings 41 and via this into the feed device 4.
  • the comminuted material 5 comminuted by the grinding rollers 2 is stripped off again behind the grinding roller 2 with stripping devices 7 via the grinding plate edge 10.
  • This stripping device is expediently arranged so that it acts on its other side as a guide for the material to be ground 5 to the insertion openings 41 of the feeders 4.
  • the vertical roller mill can be designed, for example, as an airflow mill or as a pug mill. In the case of a miller this falls over the Mahltellerrand 10 derived, crushed regrind 5 down and is withdrawn there in a suitable manner.
  • an air-flow mill an air flow flows from bottom to top past the grinding plate edge 10 and thereby captures the comminuted material to be ground, which, together with the air flow, passes into a sifter usually arranged above the grinding plate. If the airflow mill is operated with a hot air flow, not only the comminution but also the drying of the ground material can take place at the same time. Since a pug mill or an air stream mill from the prior art are well known, therefore, the further details will not be discussed further.
  • the drives 46-48 of the slides 43-45 can also be activated during the comminution operation.
  • the mode of operation of the vertical roller mill can be selectively influenced as a function of at least one operating parameter by changing the height of the grinding bed over the width of the grinding roller 2.
  • the control and regulating device 8 is connected to a suitable measuring device 9 in connection.
  • This measuring device can record, for example, at least one of the following operating parameters: smooth running, power consumption of the drives of grinding rollers and / or grinding plates, etc.
  • the stability of the grinding bed 50 can be significantly increased by the Mahlbettiere basically over the width of the grinding roller to the mode of operation, the material to be ground and the state of wear of the grinding roller is adjusted.
  • a further increase in the Mahlbettstabiltician results from the fact that a material shaft 51, as shown in Fig. 9, is avoided.
  • the material to be ground can be distributed very precisely and optimally over the width of the grinding roller by means of the slides. This has a positive effect on smoothness and grinding efficiency and also stabilizes the material bed.

Landscapes

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

Abstract

L'invention concerne un procédé de comminution de matière à broyer dans un broyeur vertical à rouleaux. La matière à broyer est alimentée en amont d'au moins un rouleau broyeur qui assure la formation d'un lit de matière broyée, et est broyée entre un plateau de broyage et ledit au moins un rouleau broyeur, le lit de matière broyée en formation étant réglable à différentes hauteurs sur la largeur du rouleau broyeur à l'aide d'un dispositif d'alimentation.
EP13724591.6A 2012-07-19 2013-05-23 Comminution de matière à broyer dans un broyeur vertical à rouleaux Active EP2874749B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012106553.5A DE102012106553B4 (de) 2012-07-19 2012-07-19 Zerkleinerung von Mahlgut in einer Vertikalrollenmühle
PCT/EP2013/060648 WO2014012693A2 (fr) 2012-07-19 2013-05-23 Comminution de matière à broyer dans un broyeur vertical à rouleaux

Publications (2)

Publication Number Publication Date
EP2874749A2 true EP2874749A2 (fr) 2015-05-27
EP2874749B1 EP2874749B1 (fr) 2016-08-24

Family

ID=48483082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13724591.6A Active EP2874749B1 (fr) 2012-07-19 2013-05-23 Comminution de matière à broyer dans un broyeur vertical à rouleaux

Country Status (7)

Country Link
US (1) US10052635B2 (fr)
EP (1) EP2874749B1 (fr)
JP (1) JP6215322B2 (fr)
CN (1) CN104540592B (fr)
DE (1) DE102012106553B4 (fr)
DK (1) DK2874749T3 (fr)
WO (1) WO2014012693A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012106554A1 (de) * 2012-07-19 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Verfahren und Anlage zur Zerkleinerung von Mahlgut mit einer Rollenmühle
DE102015203856A1 (de) 2015-03-04 2016-12-15 Thyssenkrupp Ag Vertikal-Rollenmühle
CN106345571B (zh) * 2016-09-23 2017-05-10 连云港龙塔研磨材料有限公司 碳化硅颗粒的整形装置
US10646877B2 (en) * 2017-03-13 2020-05-12 General Electric Technology Gmbh System and method for adjusting a material bed depth in a pulverizer mill
US10758912B1 (en) * 2019-04-11 2020-09-01 Gene P. Guthmiller Material processing system
DE102019210047B3 (de) * 2019-07-08 2020-06-18 Thyssenkrupp Ag Vertikal-Rollenmühle

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US1014383A (en) * 1911-02-25 1912-01-09 Jeremiah S Frazee Crushing-rolls.
US2144911A (en) 1933-09-22 1939-01-24 Cohn Martin Apparatus for the manufacturing of flakes
DD106953A1 (fr) * 1973-10-09 1974-07-12
CA1085020A (fr) 1975-11-28 1980-09-02 Donald A. Longhurst Controle du rendement d'un laminoir par detection de la densite
JPS5861839A (ja) 1981-10-06 1983-04-13 日本セメント株式会社 破砕機
GB2118457B (en) 1982-04-13 1985-05-22 Smidth & Co As F L Edge runner mills
DD225634A1 (de) * 1984-06-06 1985-08-07 Dessau Zementanlagenbau Veb Aufgabevorrichtung fuer rollenmuehlen
JPS62109743A (ja) 1985-10-25 1987-05-20 東洋製罐株式会社 軸強度の弱い缶体の巻締方法
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JPH0753244B2 (ja) 1990-01-16 1995-06-07 宇部興産株式会社 竪型粉砕機
JPH06339639A (ja) 1993-06-01 1994-12-13 Ube Ind Ltd 竪型粉砕機
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DK176687B1 (da) 2007-07-10 2009-02-23 Smidth As F L Valsepresse til formaling af partikelformet materiale
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Also Published As

Publication number Publication date
DE102012106553A1 (de) 2014-01-23
EP2874749B1 (fr) 2016-08-24
US10052635B2 (en) 2018-08-21
DE102012106553B4 (de) 2014-05-22
JP2015522413A (ja) 2015-08-06
DK2874749T3 (en) 2016-12-19
CN104540592A (zh) 2015-04-22
WO2014012693A2 (fr) 2014-01-23
WO2014012693A3 (fr) 2014-04-17
CN104540592B (zh) 2016-09-28
US20150151304A1 (en) 2015-06-04
JP6215322B2 (ja) 2017-10-18

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