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EP2411150B1 - Broyeur à rouleaux - Google Patents

Broyeur à rouleaux Download PDF

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Publication number
EP2411150B1
EP2411150B1 EP10705268.0A EP10705268A EP2411150B1 EP 2411150 B1 EP2411150 B1 EP 2411150B1 EP 10705268 A EP10705268 A EP 10705268A EP 2411150 B1 EP2411150 B1 EP 2411150B1
Authority
EP
European Patent Office
Prior art keywords
grinding
roller mill
distributing plate
height
mill according
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.)
Revoked
Application number
EP10705268.0A
Other languages
German (de)
English (en)
Other versions
EP2411150A1 (fr
Inventor
Jörg LANGEL
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.)
Loesche GmbH
Original Assignee
Loesche GmbH
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
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Application filed by Loesche GmbH filed Critical Loesche GmbH
Priority to PL10705268T priority Critical patent/PL2411150T3/pl
Publication of EP2411150A1 publication Critical patent/EP2411150A1/fr
Application granted granted Critical
Publication of EP2411150B1 publication Critical patent/EP2411150B1/fr
Revoked legal-status Critical Current
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
    • 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
    • B02C15/003—Shape or construction of discs or rings

Definitions

  • the invention relates to a roller mill according to the preamble of claim 1.
  • Roller mills which have a grinding plate or a grinding plate with a flat grinding track with or without storage rim on the outer circumference and two, three, four or six grinding rollers which roll on the grinding path or on a grinding bed formed thereon supplied Mahlgut are out DE 102 24 009 B4 .
  • DE 31 00 341 A1 and DE 31 34 601 C2 known.
  • the grinding rollers are conical and arranged such that a predeterminable, parallel grinding gap between the roll shell of the grinding rollers and the grinding path is formed.
  • the ground material to be comminuted is usually supplied laterally via a chute, wherein this is arranged such that the ground material reaches a central region of the rotating grinding bowl. Under the influence of the centrifugal forces, the millbase then spirals on the flat grinding path to the grinding rollers and is crushed.
  • the fine and coarse material passes over the edge of the grinding bowl and falls down into a grinding material discharge.
  • the fines and the coarse material fractions are fed to a sifter arranged above the grinding chamber.
  • the fine material is discharged and the coarse material particles are returned via a semolina cone to the central area of the grinding bowl and below the grinding rolls.
  • Loesche type air flow roller mills have a storage rim on the grinding table or grinding table circumference, the height of which depends on the size of the mill
  • Number of grinding rollers, the grinding material to be ground and the fineness of the ground product to be achieved is determined.
  • storage head heights in the range of about 50 to about 130 mm and for the grinding of cement clinker, blastfurnace slag and the like are Staurand Turnern common, which can be from about 150 to about 400 mm.
  • Roller mills with crowned grinding rollers and with a complementarily designed grinding path have an increased discharge edge ( DE 19 851 103 A1 ) or are also provided with a storage area ( DD-PS 106 953 . DE 197 23 100 A1 ).
  • DE 31 00 341 A1 and DE 31 34 601 C2 are known grinding plates with an elevated central part.
  • the central part is designed as a very flat, relatively wide truncated cone and integrated into the grinding table.
  • the central part has the same height as the storage edge of the flat grinding plate.
  • DD-PS 136 799 and DD-PS 136 800 described air flow roller mills have a flat, flat grinding plate and a central two-part task cone, which consists of a relatively wide, lower truncated cone and a flat, upper cone.
  • the two-part task cone is two to three times higher than a storage rim on Mahltellerchemical.
  • a task chute is arranged decentrally above the task cone, and the feed material passes unevenly under the milling rollers arranged at a different distance from the mill axis and thus to the task cone.
  • Out AT-PS 189 039 is a roller mill with a grinding bowl is known, the central frusto-conical portion is provided with wings which are to convey the feed material into the spaces between the grinding rollers. At the same time, the air supply to the grinding bowl is divided, whereby the air should also get into these spaces in particular. With these additional facilities should Fluctuations in the throughput of the mill can be avoided and a lower energy requirement can be achieved.
  • the radially upwardly projecting wings are formed on the downwardly sloping lateral surface of the truncated cone and adjoining the lateral surface Mahlbahn is rising upwardly and outwardly formed.
  • a storage rim has a greater height than the central frustoconical portion of the grinding bowl.
  • DE 38 34 965 A1 is a vertical roller mill with a flat grinding bowl without storage margin and described with an elevated circular cylindrical central area. Above this central area of the grinding bowl is provided with sensors, additional feeder height adjustable arranged for a continuous supply of material without emptying.
  • the grinding rollers are assigned fixed or adjustable scrapers, which are arranged above the central area and are intended to ensure a uniform distribution of the material to be ground from the central area to the outside under the grinding rollers.
  • the rotating grinding plate is provided with a central circular plate.
  • an additional separation device is arranged, with the aid of a lower Mahlbett für primarily fine material and an overlying, second Mahlbett für should be formed from coarse material, whereby a sufficient venting of the grinding bed, especially when supplying relatively much fines, achieved shall be.
  • the additional separating means is an annular, conically upwardly and outwardly expanding separating comb, which is concentrically mounted on the grinding table.
  • a Gutaufteil listening is provided instead of the separating.
  • the central circular plate has a central distribution cone for the recirculated granules which are to form the lower Mahlbett für, and the coarse-grained feedstock is over several Feeds supplied, which open out over a transition portion of a slightly elevated, central circular plate for gebuldeten Mahlbahn.
  • the known frustoconical and circular cylindrical Mahlgutverteiler in the center of the grinding bowl or the grinding table are not suitable in the required manner to ensure a uniform distribution of the feed material to the grinding rolls and a nearly uniform grinding bed on the grinding path.
  • the additional facilities, such as wings, scrapers, vanes, Separierkke, in conjunction with additional air guide elements and / or more coaxially arranged feeds for the feed material are relatively expensive, susceptible to wear and can adversely affect the pressure conditions in the grinding chamber and thus the energy balance of the milling process and affect the throughput of the roller mill.
  • the invention has for its object to provide a structurally simple, inexpensive Mahlgutverteiler for roller mills with which the described disadvantages of the known solutions can be avoided and particularly good throughput performance of the roller mills can be achieved.
  • a basic idea of the invention can be seen in the use as a grinding stock distributor a scattering plate, which is formed and dimensioned in relation to the grinding rollers and the storage edge or to a discharge edge of the grinding bowl, and has a shape which the Mahlgutverannon and feed to the grinding path and below improves the grinding rolls, contributes to an increase in the throughput of the roller mill and to a significant reduction in grinding energy.
  • a spreading plate which is arranged as an elevation in the center of the grinding bowl, is to be dimensioned such that the distance of the lateral surface of the spreading plate to the end faces of the grinding rolls greatly improves the grinding material distribution.
  • the end faces of the grinding rollers are directed towards the mill axis surfaces, and the lateral surfaces as rolling surfaces
  • the grinding rollers describe on the grinding path of the grinding bowl a running circle in the form of a circular ring with an inner diameter D wi and an outer diameter D wa .
  • the distance of the front side of the grinding rollers of the lateral surface of the spreading plate in small Wälzmühlen in the range of 80 mm and large Wälzmühlen can be up to 400 mm in order to achieve an optimal distribution of the ground material.
  • the spreading plate has a virtually horizontally arranged feeding surface for the ground material and is formed with a diameter D ST which corresponds to the relationship 80 mm ⁇ 1 ⁇ 2 D wi - D ST ⁇ 400 mm enough.
  • the diameter D ST of the spreading disc is the diameter at the level of the grinding track or at the transition from the spreading disc to the grinding track, and this diameter is set on the grinding track in relation to the inner diameter D wi of the running circle of the grinding rollers.
  • small roller mills are understood to mean roller mills having a grinding bowl diameter of approximately 1.2 to 2.0 m and, in particular, two grinding rollers.
  • Large roller mills are equipped with two, three, four or more, for example six, rollers and the grinding bowls may have diameters from about 2.1 to over 6 m.
  • roller discs of the LOESCHE type which have a grinding bowl or a grinding plate with a horizontal grinding path and conical grinding rollers rolling thereon, with a frustum-shaped spreading plate and with a height H ST as a function of the height H SR of a Forming staurings on the grinding bowl circumference.
  • the height of the storage ring of the grinding bowl is selected depending on the material to be ground and the desired fineness of the ground product.
  • the height of the jam ring in the grinding of cement raw material about 50 to 130 mm and in the grinding of cement clinker or Granulated slag about 150 to 400 mm.
  • a spreading plate causes an extraordinarily advantageous distribution of the feed material whose height is greater than or at least equal to the height of the storage ring.
  • the height H ST of the spreading disc may be in the range of 60 to 250% of the height H SR of the jam ring, so that the relationship 0 . 6 H SR ⁇ H ST ⁇ 2 . 5 H SR applies.
  • the spreading plate can also be formed as a circular cylindrical elevation in order to ensure efficient distribution and feeding of the material to be ground to the grinding path and below the grinding rollers.
  • the horizontal feeding surface of the spreading disc according to the invention may have a diameter which is greater than the grinding path width.
  • the truncated cone angle ⁇ that is to say the inclination of the lateral surface of the truncated cone relative to its base, is in the range from approximately 45 ° to approximately 90 °.
  • the truncated cone angle ⁇ 45, 50, 55, 60, 65, 70, 75, 80, 85 or 89 ° it being expedient, in a frustoconical spreading plate having a height greater than the Stauring assume a truncated cone angle ⁇ in the range of about 45 ° to about 75 ° to choose, while frustoconical spreading discs with a lower height than the storage ring frustoconical angle in the range of 65 ° to 85 ° may have. It has been found that a spreading plate with a truncated cone angle of around 70 ° exhibits particularly advantageous effects, in particular with regard to the running smoothness of the mill and energy saving. This can be explained inter alia with a vertical force component at a larger truncated cone angle in the context of an oblique sliding or rolling surface in the direction of the grinding path.
  • the upper feeding surface of the spreading disc may be formed as a plane.
  • the feeding surface may also be expedient for the feeding surface to be inclined upwards or downwards in the direction of the mill axis or curved in a curved manner, that is to say concavely or convexly curved, to form, wherein the inclination angle ⁇ then a maximum of 10 ° and thus 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ° can be.
  • a concave or convex design of the lateral surface of a frusto-conical or circular cylindrical spreading plate can be advantageous for the distribution of the ground material.
  • the angle of inclination ⁇ of the inside or outside curved lateral surface can advantageously amount to a maximum of 5 °, that is to say 1, 2, 3, 4 or 5 °.
  • rounded transition areas which can be formed between the application surface and the lateral surface of the spreading plate and between the lateral surface of the spreading plate and the adjacent grinding path and favor the flow of the feed material from the application surface and the lateral surface of the storage plate.
  • a discharge edge on the outer edge of the grinding bowl or grinding track can be equated to the storage bin.
  • the height H AK of the discharge edge then corresponds to the height of the storage ring.
  • the ratio of height H ST of the spreading plate to the height H AK of the discharge edge is 1.2 to 2.2: 1, that is, the spreading plate is 1.2 to 2.2 times higher than the discharge edge is formed , wherein the height of the discharge edge from the lowest point of the grinding path is measured.
  • Roller mills with an inventively designed spreading plate show due to the centrifugal and gravity effect on the material to be ground an improved flow of the ground material and under the grinding rollers.
  • the throughput of rolling mills could be increased by up to 10% or the grinding energy could be reduced by up to 10%.
  • Due to the inventive arrangement and design of the spreading plate, in particular its dimensions and distance to the grinding rollers in the form of the inner diameter of the running circle of the grinding rollers and the diameter of the spreading plate at the level of the grinding path was found to be a further special effect that from the end faces of the grinding rollers in Millbase discarded millbase from the spreading plate, that is held by its lateral surface, on the grinding track and efficiently transported under the grinding rollers.
  • Fig. 1 shows a section of a roller mill with a mill axis 2, a rotating grinding bowl 3 and rolling thereon grinding rollers 5, wherein in the partial view, only the left part of the grinding bowl and only one grinding roller is shown.
  • the grinding bowl 3 has a flat grinding track 4, which is bounded on the outer periphery by a storage rim 15 with the height H SR .
  • a Mahlgutverteiler 7 is arranged, which is integrated in this embodiment in the grinding bowl.
  • the grinding stock distributor can also be a separate component and can be retrofitted and exchanged.
  • the Mahlgutverteiler 7 is formed as a scattering plate 10 and has the shape of a truncated cone with the height H ST and a diameter D ST in the bottom region, that is, at the level of the grinding track 4.
  • the grinding rollers 5 rolling on the grinding track 4 or a grinding bed (not shown) formed thereon describe a running circle, which has an annular shape and an inside diameter D wi and an outside diameter D wa .
  • Half the difference between the outer diameter and inner diameter of the running circle of the grinding rolls substantially corresponds the width of the lateral surface 6 of the grinding rollers 5, which are conical and face with end faces 8 in the direction of mill axis 2.
  • the grinding bowl 3 in this example has a diameter D MS of about 5.6 m and a storage rim height H SR of 0.35.
  • the inner diameter D wi of the running circle of the grinding rolls is about 3.95 m and the outer diameter D wa of the running circle of the grinding rolls 5 is about 5.5 m.
  • Mahlbahnbreite is thus D Wa - D wi 2 ⁇ 0 . 76 m ,
  • the centrally arranged and frusto-conical scattering plate 10 is formed with a flat feed surface 11 and below a central Mahlgutzu arrangement (not shown) arranged so that the ground material on the feed surface 11 and then under the action of gravity on a lateral surface 12 of the spreading plate 10 on the grinding path 4 flows and enters the catchment area of the grinding rollers 5.
  • the distance between the spreading plate 10 and the grinding rollers 5 is defined by the diameter D ST of the spreading plate 10 in the amount of the grinding track 4 and the inner diameter D wi of the running circle of the grinding rollers 5, and this distance is 350 mm in the present embodiment.
  • this distance corresponds to the relationship 80 mm ⁇ [D wi -D ST ] ⁇ 400 mm.
  • the task surface 11 and the lateral surface 12 of the spreading plate 10 are in the embodiment of Fig. 1 each just trained.
  • the truncated cone angle ⁇ is about 65 °.
  • Fig. 2 shows a left half of an alternative trained grinding bowl 3 with an inclined grinding track 4, which, like the associated grinding rollers 5, of which only one is shown again, is shown by solid lines, and with an alternative, domed grinding track 4 ', which like those on it
  • the discharge edge 17 has a height H AK of 300 mm
  • the scattering plate 10 in the center of the grinding bowl 3 has a height H ST of 335 mm.
  • the grinding bowl diameter D MS in this embodiment is 4500 mm
  • the inner diameter D wi of the running circle of the grinding rolls 5 is 2700 mm
  • the outer diameter D wa of the running circle of the grinding rolls 5 is 4200 mm
  • the spreading disc diameter D ST measures 1980 mm
  • the diameter of the feeding surface 11 is 1800 mm.
  • Fig. 4 shows a circular cylindrical scattering plate 10 with a flat feed surface 11 and vertically oriented lateral surface 12.
  • the diameter of the feed surface 11 and the diameter D ST at the level of the grinding path 4 agree here.
  • the transition regions 13, 14 are in turn rounded and dashed is indicated that the support surface 11 in addition to a flat design also in the direction of mill axis 2 up or down beveled or may have a concave or convex formation.
  • a circular cylindrical scattering plate 10 with the illustrated bearing surfaces 11, 11 ', 11 "and / or the lateral surfaces 12, 12', 12" and an inclination angle ⁇ from 1 to 10 ° or a Angle ⁇ of 1 to 5 °, each based on a horizontal shelf surface 11 and a vertical lateral surface 12 of 0 °, may be formed.
  • the spreading plate can be integrated into the grinding bowl and manufactured with this.
  • Advantageous for different feed material is a detachable and replaceable arrangement of a separately produced spreading plate, so that a retrofit is possible.

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

Claims (11)

  1. Broyeur à rouleaux,
    avec un plateau de broyage (3) pouvant tourner autour d'un axe de broyeur (2), sur la piste de broyage (4) duquel roulent des rouleaux de broyage (5) montés stationnaires en décrivant ainsi avec leurs surfaces d'enveloppe (6) sur la piste de broyage (4) le même circuit de roulement avec un diamètre intérieur DWi et un diamètre extérieur DWa, et
    avec un répartiteur de produit à broyer (7) pour le produit à broyer, qui est placé sous forme de surélévation au centre du plateau de broyage (3) de façon coaxiale à l'axe de broyeur (2),
    caractérisé
    en ce que, comme répartiteur de produit à broyer (7), il est prévu un plateau d'épandage (10) avec une surface d'approvisionnement (11) pour le produit à broyer quasiment horizontale et avec un diamètre DST au niveau de la piste de broyage (4) suivant la relation 80 mm ≤ ½ D Wi - D ST ≤ 400 mm .
    Figure imgb0011
  2. Broyeur à rouleaux selon la revendication 1,
    caractérisé
    en ce que le plateau d'épandage (10), qui est conformé en surélévation tronconique ou cylindrique circulaire, présente une hauteur HST qui, par rapport à la hauteur HSR d'un anneau d'accumulation (15) sur la circonférence extérieure du bac de broyage (3), satisfait à la relation 0 , 6 H SR ≤ H ST ≤ 2 , 5 H SR .
    Figure imgb0012
  3. Broyeur à rouleaux selon la revendication 1,
    caractérisé
    en ce que le plateau d'épandage (10) présente une hauteur HST supérieure à l'anneau d'accumulation (15), et
    en ce que la hauteur du plateau d'épandage (10) vaut 1,1 fois à 2,5 fois la hauteur HSR de l'anneau d'accumulation (15).
  4. Broyeur à rouleaux selon l'une des revendications précédentes,
    caractérisé
    en ce que le plateau d'épandage (10) présente une surface d'approvisionnement (11) qui est plane.
  5. Broyeur à rouleaux selon l'une des revendications 1 à 3,
    caractérisé
    en ce que le plateau d'épandage (10) présente une surface d'approvisionnement (11) qui est inclinée vers le haut ou le bas en direction de l'axe de broyeur (2) ou qui est réalisée avec une courbure concave ou convexe.
  6. Broyeur à rouleaux selon la revendication 5,
    caractérisé
    en ce que la surface d'approvisionnement (11) inclinée ou incurvée présente un angle d'indinaison β d'au plus 10°.
  7. Broyeur à rouleaux selon l'une des revendications 2 à 6,
    caractérisé
    en ce que le plateau d'épandage (10) conformé en cône tronqué présente un angle de tronc de cône α compris entre 45° et au plus 89°.
  8. Broyeur à rouleaux selon l'une des revendications 2 à 7,
    caractérisé
    en ce que le plateau d'épandage (10) présente une surface d'enveloppe (12) qui est concave ou convexe et présente un angle γ d'au plus 5° par rapport à une droite génératrice de la surface d'enveloppe (12).
  9. Broyeur à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que le plateau d'épandage (10) présente une zone de transition supérieure et inférieure (13, 14) entre la surface d'approvisionnement (11) et la surface d'enveloppe (12), respectivement la surface d'enveloppe (12) et la piste de broyage (14), zones qui sont réalisées arrondies.
  10. Broyeur à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que le plateau de broyage (3) présente une piste de broyage plane (4), en ce que les rouleaux de broyage (5) sont coniques, et
    en ce que le plateau d'épandage (10) présente un diamètre DST qui est supérieur ou égal à la largeur de piste de broyage des rouleaux de broyage (5) suivant D ST ≥ D Wa - D Wi / 2
    Figure imgb0013
  11. Broyeur à rouleaux selon l'une des revendications 1 à 9,
    caractérisé
    en ce que le plateau de broyage (3) présente une piste de broyage inclinée (4) ou en forme de creux (4') et des rouleaux de broyage complémentaires coniques (5) ou bombés (5'), et
    en ce que le plateau d'épandage (10) présente une hauteur HST qui, par rapport à la hauteur HAK d'un bord de rejet (17) sur le bord extérieur du bac de broyage (3), satisfait à la proportion H ST : H AK = 1 , 2 à 2 , 2 : 1.
    Figure imgb0014
EP10705268.0A 2009-03-26 2010-01-26 Broyeur à rouleaux Revoked EP2411150B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10705268T PL2411150T3 (pl) 2009-03-26 2010-01-26 Młyn krążnikowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009015037A DE102009015037B4 (de) 2009-03-26 2009-03-26 Wälzmühle
PCT/EP2010/000466 WO2010108564A1 (fr) 2009-03-26 2010-01-26 Broyeur à rouleaux

Publications (2)

Publication Number Publication Date
EP2411150A1 EP2411150A1 (fr) 2012-02-01
EP2411150B1 true EP2411150B1 (fr) 2013-07-31

Family

ID=42310716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10705268.0A Revoked EP2411150B1 (fr) 2009-03-26 2010-01-26 Broyeur à rouleaux

Country Status (11)

Country Link
US (1) US8556202B2 (fr)
EP (1) EP2411150B1 (fr)
JP (1) JP5576470B2 (fr)
CN (1) CN102369060B (fr)
CA (1) CA2723415C (fr)
DE (1) DE102009015037B4 (fr)
DK (1) DK2411150T3 (fr)
ES (1) ES2432859T3 (fr)
MX (1) MX2011009185A (fr)
PL (1) PL2411150T3 (fr)
WO (1) WO2010108564A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN104001586A (zh) * 2014-05-15 2014-08-27 江苏天鹏机电制造有限公司 一种高效立式磨磨盘辅助构件
CN114643105B (zh) * 2022-04-02 2023-07-04 天津水泥工业设计研究院有限公司 一种立式辊磨的强制喂料设计方法

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JP2002292298A (ja) * 2001-03-30 2002-10-08 Kurimoto Ltd 竪型ミル
ATE492344T1 (de) * 2002-05-29 2011-01-15 Loesche Gmbh Verbessertes erzzerkleinerungsverfahren und verbesserte erzzerkleinerungsvorrichtung
DE10224009B4 (de) 2002-05-29 2004-07-22 Loesche Gmbh Verfahren zur Zerkleinerung von Material, insbesondere von Erzen, und Wälzmühle zur Durchführung des Verfahrens
US6644576B1 (en) * 2002-05-30 2003-11-11 Stuart W. Hicklin Blade sweep for pulverizers
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US7100853B2 (en) * 2004-07-27 2006-09-05 Wark Rickey E Deflector for coal pulverizer/classifier

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DK2411150T3 (da) 2013-10-28
DE102009015037A1 (de) 2010-11-18
CN102369060B (zh) 2013-12-11
EP2411150A1 (fr) 2012-02-01
JP5576470B2 (ja) 2014-08-20
US20110155831A1 (en) 2011-06-30
WO2010108564A1 (fr) 2010-09-30
PL2411150T3 (pl) 2013-12-31
CA2723415A1 (fr) 2010-09-30
US8556202B2 (en) 2013-10-15
MX2011009185A (es) 2012-02-01
ES2432859T3 (es) 2013-12-05
JP2012521280A (ja) 2012-09-13
DE102009015037B4 (de) 2011-03-31
CN102369060A (zh) 2012-03-07

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