EP2825315A1 - Cylindre broyeur pour broyeur à cylindres - Google Patents

Cylindre broyeur pour broyeur à cylindres

Info

Publication number
EP2825315A1
EP2825315A1 EP13703366.8A EP13703366A EP2825315A1 EP 2825315 A1 EP2825315 A1 EP 2825315A1 EP 13703366 A EP13703366 A EP 13703366A EP 2825315 A1 EP2825315 A1 EP 2825315A1
Authority
EP
European Patent Office
Prior art keywords
roll
edge protection
recesses
protection elements
press
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
EP13703366.8A
Other languages
German (de)
English (en)
Other versions
EP2825315B1 (fr
Inventor
Eggert De Weldige
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 Koeppern GmbH and Co KG
Original Assignee
Maschinenfabrik Koeppern GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47681867&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2825315(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Koeppern GmbH and Co KG filed Critical Maschinenfabrik Koeppern GmbH and Co KG
Publication of EP2825315A1 publication Critical patent/EP2825315A1/fr
Application granted granted Critical
Publication of EP2825315B1 publication Critical patent/EP2825315B1/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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Definitions

  • the invention relates to a press roll for a roll press, in particular for the comminution of highly abrasive substances, with a roll body which (for the wear protection in the edge regions) on one or both roll edges a plurality of circumferentially spaced and spaced apart in the tangential direction or circumferential direction pocket-like recesses, which are each formed laterally and open at the top, wherein in the individual pocket-like recesses only one hard body is used as an exchangeable edge protection element.
  • a roll press usually has two press rolls.
  • the roll press is used in particular to comminution and in particular high-pressure crushing of coarse mineral feed materials such. As ores, cement clinker, slag, kimberlite, coal or ceramic base materials.
  • Such a roller press is also referred to as a good bed roller mill.
  • the invention also encompasses roll presses for the compaction or briquetting of material.
  • EP 1 502 650 B1 describes a press roll with circumferential recesses in the form of annular shoulders arranged on the roll edges, a multiplicity of wear protection elements being arranged one behind the other in the circumferential direction in each of these recesses.
  • the wear protection elements made of hard metal form a quasi-closed ring, which should offer a high wear protection.
  • the wear protection elements can be attached by gluing, stapling or soldering directly in the circumferential ring shoulders.
  • the wear protection elements are mounted in the circumferential recesses close together, so that
  • the wear layer of the press roll has substantially planar zones of a highly wear-resistant material, the z. B. tiles or tiles can be formed. The spaces between the highly wear-resistant zones are filled with a material of other wear resistance.
  • the tiles or tiles can z. B. made of a metal matrix composite material by hot isostatic pressing. These prefabricated hard bodies are then fastened permanently to the basic body together with the interspace material by hot isostatic pressing.
  • the invention is the technical problem of providing a press roll for a roller press, which is characterized by a particularly resistant, yet interchangeable wear protection on the roll edges.
  • the invention teaches in a generic press roll of the type described above with individual pocket-like
  • the length of the pocket-like recesses and the length of the edge protection elements used in the tangential direction or circumferential direction is greater than the distance between two immediately adjacent recesses.
  • the invention is initially based on the recognition that it is fundamentally advantageous to equip the press roll on the roll edges with exchangeable and consequently detachable edge protection elements.
  • Detachable means within the scope of the invention that these edge protection elements can be removed from the recesses without destruction for the purpose of replacement.
  • the detachable edge protection elements are not arranged in circumferential grooves or annular shoulders, but rather in individual pocket-like recesses, wherein in each individual pocket-like recess only one hard body is detachably inserted as an exchangeable edge protection element.
  • the solution according to the invention has the advantage that the individual edge protection elements, despite the very high pressing forces, do not touch each other and consequently can not butt against one another or be pressed against one another. Damage to the individual edge protection elements is thus avoided, and in particular damage due to breakage, which in principle is to be feared with brittle hard materials.
  • the arrangement of the edge protection elements in individual, locally limited pockets moreover has the advantage that the edge protection elements are not only supported on a step-like shoulder on the underside and on the inside, but also laterally. Because the design of the roll edge with individual, locally limited pockets has the consequence that the individual recesses are delimited from each other by "dividers", so that
  • the edge protection elements are supported tangentially by these dividers.
  • the high pressure forces that occur can be well diverted into the body.
  • the solution according to the invention over the known arrangements with circumferential annular shoulders has the advantage that can form an autogenous wear protection in the region of the partitions and thus in the area between the individual pockets and edge protection elements, which protects the edges of the wear protection elements used to a particular extent.
  • the autogenous wear protection can build up not only in the remaining roller areas, but also in the edge area and between the individual edge protection elements. This has the consequence that a auskolkender wear in these zones is avoided.
  • the pocket-like recesses are - as described - each side and top open.
  • Laterally open means in the context of the invention based on the roller frontally open, that is open on the side facing away from the roll center in the axial direction.
  • Open at the top means within the scope of the invention open on the side facing away from the roll axis in the radial direction. In detail, it will be discussed in the figure description.
  • the press roll according to the invention is characterized by a reliable edge protection over the entire peripheral region of the press roll
  • the length of the recesses and the length of the edge protection elements used in the circumferential direction is (significantly) greater than the (tangential) distance between two immediately adjacent recesses and consequently significantly greater than the thickness of the arranged between the recesses separating webs.
  • the length of the recesses and the length of the edge protection elements is more than two times, preferably more than five times, more preferably more than ten times the distance between the individual pockets.
  • the relatively small distance between the recesses compared to the length of the recesses also has the advantage that an autogenous wear protection can also be formed properly in the edge region.
  • the dividers between the recesses provide sufficient stability to achieve the advantages already described.
  • the invention proposes, in a preferred embodiment, that the (tangential) distance between two immediately adjacent recesses is more than 3 mm, preferably more than 4 mm.
  • edge protection elements arranged in the individual pockets can have geometrically very different shapes.
  • Edge protection elements are preferably used, which are square, for example rectangular, in the plan view of the roll surface. It is within the scope of the invention that the edge protection elements in a side view of the roller angular, z. B. are rectangular, so that the edge protection elements z. B. may have the shape of a cuboid. Alternatively, however, edge protection elements of other geometry are also covered by the invention, which may also have a non-cornered shape, particularly in plan view.
  • the invention preferably proposes that the side recesses in the side view at least partially curved wall surfaces and the edge protection elements at least partially have adapted to the curved wall surface, curved outer contour.
  • the already described lateral support of the edge protection elements and thus the derivation of the compressive forces into the main body can thereby be optimized.
  • such pockets with curved wall or floor areas can be particularly easy to introduce into the body, z. B. by milling.
  • edge protection elements made of various materials.
  • the edge protection elements used detachably in the pocket-like recesses made of hard metal or hard metal similar materials eg. As cermets exist.
  • edge protection elements of metal matrix composite material may preferably be used within the scope of the invention.
  • MMC metal matrix composite material
  • These edge protection elements made of MMC have the advantage over tungsten carbides that they can be designed less brittle by suitable choice of matrix materials, the proportion of which is much higher in comparison to carbide in MMC, and thus are less sensitive to bending.
  • the selected composition of the material moreover, it is also possible to "adjust" the wear.
  • Metal matrix composite means a material in which hard particles are bound into a continuous metallic matrix, wherein the hard particles are arranged by the continuous metallic matrix separated from each other within the composite material.
  • edge protection elements made of a metal matrix composite material are preferably produced by sintering and / or hot isostatic pressing. In the finished material, the non-metallic hard particles are distributed and each surrounded by the metallic material of the metal matrix.
  • the metal matrix composite materials therefore differ, inter alia, by the relatively low proportion of hard particles.
  • the hard particles of the metal matrix composite materials are significantly larger than the hard particles of hard metals.
  • a metal matrix composite material is used in which hard particles of a size of more than 20 ⁇ , z. B. more than 40 ⁇ (preferably more than 60 ⁇ ) and a volume fraction of less than 50% (preferably less than 40%) are used, which are embedded (discontinuously) in a (contiguous) metallic matrix.
  • the volume fractions in the (pressed) hard body are meant.
  • the edge protection elements are designed as substantially homogeneous solid body, z. As carbide, cermet or MMC.
  • the edge protection elements can have a composite structure and in each case a carrier element with an attached or attached thereto.
  • the carrier element consists of a ductile material with lower hardness than the wear layer.
  • This embodiment has the advantage that the carrier element made of a good material to be processed, for. As steel, can be made, which in particular enables an optimal attachment of the edge protection element on the roll body.
  • the wear layer itself then forms the wear protection.
  • the wear layer of the edge protection element can, for. B. hard metal or a carbide-like material, eg. As cermet, or - as already described - from a metal matrix composite material (MMC). This wear layer is firmly connected in the course of the production of the edge protection elements with the carrier element, for. By sintering and / or hot isostatic pressing (HIP).
  • HIP hot isostatic pressing
  • the applied to the carrier element wear layer can cover the entire surface of the support element and thus form the entire surface of the edge protection element. Alternatively, however, the wear layer may cover only a portion of the support element. So there is z. B. the ability to incorporate a recess in the support element, in which the wear layer is then integrated in the sense of a wear insert.
  • edge protection elements are inventively releasably attached to the roller body, so that the edge protection elements are basically interchangeable. Such attachment succeeds z. B. by a screw.
  • the edge protection elements suitable openings, z. B. bores have, through which corresponding fasteners, z. As screws, can be introduced into the roll body.
  • Such a configuration is particularly suitable when the edge protection element is a carrier element made of a ductile material, for. B. steel.
  • the edge protection element is a carrier element made of a ductile material, for. B. steel.
  • the edge protection element is a carrier element made of a ductile material, for. B. steel.
  • edge protection elements by gluing or soldering (releasably) in the pockets to attach.
  • a positive connection of the edge protection elements in the pockets can be realized, namely z. B. by a "dovetail connection".
  • the edge protection elements can be equipped with (for example dovetail-like) form-fitting webs which engage positively in corresponding negative forms in the pockets.
  • the separating webs arranged between the individual recesses or pockets can have a constant thickness in the axial direction.
  • this thickness can also vary over the width of the recess.
  • the thickness of the separating web can increase or decrease from the roll edge in the direction of the roll center.
  • the recesses and the edge protection elements can each have a cross-section widening at least in the direction of the roll center.
  • the cross-section can widen or extend in regions from the direction of the roll end side in the direction of the roll center, so that the (inner) surface of the edge protection elements, which in each case faces the center of the roll in the axial direction, is larger than the (outer) surface facing the roller end face.
  • the contour of the recesses or pockets is carried out according to "negative". In this way, the edge protection element itself are positively connected at their outer contours with the roller, so that they are secured in the course of assembly against falling out.
  • the invention relates not only to the described press roll itself, but in a preferred development also a roll press with two such press rolls.
  • the press roll may be formed as a solid roll, that is, the roll body is formed as a solid body.
  • the roller body can also have a (cylindrical) base body and a bandage arranged thereon, so that the wear protection is then mounted on / on this bandage.
  • the pocket-like recesses can in the body, ie in the solid body or in the bandage, z. B. be machined by machining to form the partitions.
  • FIG. 1 is a perspective view of a press roll according to the invention in a first embodiment (detail)
  • Fig. 2 shows the article of FIG. 1 in a modified second
  • Fig. 3 shows the article of FIG. 1 in a modified third
  • Fig. 4 shows a cross section through a modified embodiment of
  • Fig. 5 shows another option of the invention.
  • a press roll 1 for a roll press in particular for the high-pressure crushing of brittle, mineral feed material is shown.
  • the roller press usually consists of two press rollers 1, of which in the figures, however, only one is shown in the cutout.
  • Such a press roll 1 can-as shown in the figures-be designed as a solid roll, wherein the roll body 2 is then formed as a solid body.
  • the roller body can also have a base body and a bandage surrounding it. This is not shown in the figures.
  • such a press roller is equipped with a suitable wear protection, which can be configured in various ways.
  • the illustrations in the figures are limited to the wear protection measures in the region of the (frontal) roll edges.
  • the roll body 2 has at one or both roll edges a multiplicity of pocket-like recesses 3 distributed over the circumference and spaced apart in the circumferential direction or tangential direction T.
  • the individual pocket-like recesses 3 are separated from one another in the circumferential direction T by separating webs 4.
  • the recesses are open both laterally and above.
  • a single hard body is used as an exchangeable edge protection element 5 releasably.
  • the figures show the press roll 1 while in a partially assembled state, that is, some recesses 3 are shown for better understanding without inserted edge protection element.
  • Fig. 1 moreover, the circumferential direction or tangential direction T, the axial direction A and the radial direction R are shown.
  • the individual pocket-like recesses 3 are each open both laterally and upwardly. Open on the side therefore means open on the front side, d. H. on the side facing away from the roller center in the axial direction A. Open top means on the side facing away from the roll axis in the radial direction R side.
  • the length L of the pocket-like recesses and also the length I of the edge protection elements 5 used according to the invention is greater than the distance a between two immediately adjacent recesses 3.
  • the lengths L, I and the distance a relate to the circumferential direction T of the roller, namely in the area of the outer, upper edges of the edge protection elements.
  • the distance a between the individual pockets 3 thus corresponds to the thickness of the webs 4 arranged between the recesses 3 and consequently also between the edge protection elements 5, which are part of the roller body 2.
  • the pocket-like recesses 3 are consequently in the roll body 2 z. B. introduced by machining.
  • the inventive design with individual pockets 3 causes the individual edge protection elements 5, which are designed as hard body, not abutting and despite the large forces occurring can not be pressed against each other, so that damage to the edge protection elements can be avoided. Furthermore, the pressure forces that occur can be introduced into the roller body 2 without any problem by means of this embodiment.
  • both the curved wall region 3a and the curved outer contour 5a are each formed (partially) cylindrically.
  • Fig. 1 shows a first embodiment in which the edge protection elements 5 are made "homogeneous" from one and the same material. It can be z. B. hard body of hard metal or hard metal-like materials (eg., Cermets) act. Alternatively, the hard bodies can also be made of a metal matrix composite material. In the embodiment shown in FIG. 1, the edge protection elements or hard body 5 in the recesses without screws, z. B. attached by gluing or soldering.
  • FIG. 2 shows, in an alternative embodiment, edge protection elements 5 which, as a composite structure, each have a carrier element 5b and a wear layer 5c arranged thereon.
  • the carrier element 5b consists of a ductile material, for. Steel.
  • the carrier element 5b serves primarily to fasten the edge protection element 5 in the recess 3, while the wear layer 5c determines the edge protection properties or wear properties.
  • the individual edge protection elements 5 are prefabricated with carrier element 5b and wear layer 5c and then mounted in the recesses 3.
  • Fig. 2 shows an embodiment in which the edge protection elements 5 are fastened by means of screws to the roller body 2.
  • the edge protection elements 5 therefore have suitable perforations 6 or bores through which the screws can be introduced into the roller body 2.
  • these bores 6 for the screws are arranged in the region of the carrier elements 5 and consequently in the region of the ductile material.
  • FIG. 3 shows an alternative embodiment in which the edge protection elements 5 are fastened in a form-fitting manner to the roll body 2 by means of a dovetail construction.
  • the edge protection elements 5 each have a mounting web 7 and in the roller body 2 are each arranged in the radial direction of grooves 8 in the region of the individual recesses 3, wherein both the mounting webs and the grooves 8 can be designed dovetailed.
  • these elements 5 can also be designed as a composite component with a wear layer 5c and a carrier element 5b, this wear layer 5c forming a wear insert 5c which is introduced into a prepared recess of the carrier element 5b.
  • the edge protection elements 5 shown in the figures are rectangular in a plan view of the roller. In a side view of the end face of the roller edge protection elements 5 in the embodiment, however - as described - partially rounded.
  • the invention basically also includes embodiments in which the edge protection elements in a side view on the front page polygonal, z. B. rectangular, are formed, so that
  • edge protection elements alternatively or additionally on the upper side with a curved contour, so that in particular an adaptation to the radius of curvature of the roller takes place. This option is not shown.
  • the recesses 3 and the edge protection elements 5 have a cross-section widening at least in regions in the direction of the roller center. These options are shown by way of example in FIGS. 4 and 5.
  • FIG. 4 shows an embodiment in which the lower wall region 3 a drops in an axial section from the roll edge in the direction of the roll center, so that an oblique lower flank is formed.
  • This embodiment has the effect that the edge protection elements are securely pressed into the recesses by the pressing forces occurring.
  • Such an embodiment can be realized in the edge protection elements in various forms, eg. B. also in those shown in Figs. 1 to 3 edge protection elements.
  • the recesses 3 and the edge protection elements 5 have a cross-section widening at least in regions in the direction of the roll center, this referring in FIG. 5 to the lateral wall regions or the lateral outer contour.
  • the considerations underlying FIG. 4 can consequently also be provided in the lateral regions of the recesses according to FIG. 5, wherein these possibilities can also be combined with one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Crushing And Grinding (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

La présente invention concerne un cylindre broyeur (1) pour broyeur à cylindres, en particulier pour le broyage de matériaux fortement abrasifs, comportant un corps (2) présentant, sur un bord, ou sur ses deux bords, une pluralité d'évidements (3) de type poche, ouverts sur le côté et sur le dessus, et répartis sur la périphérie de manière à être écartés les uns des autres dans la direction périphérique (T), seul un corps dur servant d'élément de protection de bord interchangeable (5) étant logé de manière amovible dans chaque évidement (3) de type poche. La longueur (L) des évidements (3) de type poche et la longueur (l) des éléments de protection de bord (5) utilisés, sont supérieures, dans la direction périphérique (T), à l'écartement (A) entre deux évidements (3) directement voisins.
EP13703366.8A 2012-03-15 2013-01-31 Rouleau pour une presse à rouleaux Active EP2825315B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012102192.9A DE102012102192B4 (de) 2012-03-15 2012-03-15 Presswalze für eine Walzenpresse
PCT/EP2013/051966 WO2013135425A1 (fr) 2012-03-15 2013-01-31 Cylindre broyeur pour broyeur à cylindres

Publications (2)

Publication Number Publication Date
EP2825315A1 true EP2825315A1 (fr) 2015-01-21
EP2825315B1 EP2825315B1 (fr) 2018-11-21

Family

ID=47681867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13703366.8A Active EP2825315B1 (fr) 2012-03-15 2013-01-31 Rouleau pour une presse à rouleaux

Country Status (13)

Country Link
US (1) US9718063B2 (fr)
EP (1) EP2825315B1 (fr)
CN (1) CN104271244B (fr)
AU (1) AU2013231612B2 (fr)
BR (1) BR112014022698B1 (fr)
CA (1) CA2866554C (fr)
CL (1) CL2014002433A1 (fr)
DE (1) DE102012102192B4 (fr)
DK (1) DK2825315T3 (fr)
HK (1) HK1202090A1 (fr)
RU (1) RU2606791C2 (fr)
WO (1) WO2013135425A1 (fr)
ZA (1) ZA201407425B (fr)

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Publication number Priority date Publication date Assignee Title
US8708264B2 (en) * 2012-04-20 2014-04-29 Metso Minerals (Sweden) Ab Roller crusher having at least one roller comprising a flange
WO2015123772A1 (fr) * 2014-02-19 2015-08-27 Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. Rouleau doté de renforcements de bord remplaçables
WO2015123770A1 (fr) * 2014-02-19 2015-08-27 Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. Rouleau segmenté et son procédé de reconditionnement
EP2940169A1 (fr) * 2014-04-30 2015-11-04 Sandvik Intellectual Property AB Composant résistant à l'usure et dispositif de décomposition mécanique de matériau pourvu d'un tel composant
DE102015207922A1 (de) * 2015-04-29 2016-11-03 Takraf Gmbh Hartkörper als Rasterpanzerung für eine Rollenpresse, Verfahren zur dessen Herstellung, und Rolle für eine Rollenpresse
DE102016200911A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
CN105728106A (zh) * 2016-05-09 2016-07-06 张进才 一种辊子及其辊压装置
CN107716818A (zh) * 2017-11-08 2018-02-23 铜陵市宏达家电有限责任公司 一种内螺纹成型机压轮
US11931745B2 (en) * 2021-06-23 2024-03-19 Metso Outotec USA Inc. Grinding roll

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JPS63143949A (ja) * 1986-12-09 1988-06-16 アイエヌジ商事株式会社 粉砕機に使用される破砕面部材
DE4132474A1 (de) 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
US5755033A (en) 1993-07-20 1998-05-26 Maschinenfabrik Koppern Gmbh & Co. Kg Method of making a crushing roll
CN2506344Y (zh) * 2001-07-25 2002-08-21 广州有色金属研究院 一种耐磨磨辊
DE10335115A1 (de) 2003-07-31 2005-02-24 Polysius Ag Mahlwalze
DE10354679A1 (de) 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
CN2805914Y (zh) * 2005-07-29 2006-08-16 中信重型机械公司 一种新型辊压磨辊面
DE102007007276B4 (de) * 2007-02-14 2019-12-05 Khd Humboldt Wedag Gmbh Panzerung der Oberflächen von Rollenpressen-Presswalzen
DE102009050636B4 (de) * 2009-10-24 2011-07-07 Siempelkamp Giesserei GmbH, 47803 Mahlwalze und Ringbandage für eine Mahlwalze
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Also Published As

Publication number Publication date
HK1202090A1 (zh) 2015-09-18
ZA201407425B (en) 2016-10-26
US9718063B2 (en) 2017-08-01
RU2014141356A (ru) 2016-05-10
US20150034749A1 (en) 2015-02-05
DE102012102192A1 (de) 2013-09-19
CA2866554A1 (fr) 2013-09-19
DK2825315T3 (en) 2019-02-18
RU2606791C2 (ru) 2017-01-10
CN104271244A (zh) 2015-01-07
BR112014022698B1 (pt) 2021-04-20
WO2013135425A1 (fr) 2013-09-19
DE102012102192B4 (de) 2020-01-23
EP2825315B1 (fr) 2018-11-21
AU2013231612B2 (en) 2017-08-17
AU2013231612A1 (en) 2014-10-02
CA2866554C (fr) 2017-07-25
CL2014002433A1 (es) 2014-11-14
CN104271244B (zh) 2016-08-31

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