EP0634219A1 - Procédé et dispositif de broyage de matériau avec une granulométrie variable - Google Patents

Procédé et dispositif de broyage de matériau avec une granulométrie variable Download PDF

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Publication number
EP0634219A1
EP0634219A1 EP94109122A EP94109122A EP0634219A1 EP 0634219 A1 EP0634219 A1 EP 0634219A1 EP 94109122 A EP94109122 A EP 94109122A EP 94109122 A EP94109122 A EP 94109122A EP 0634219 A1 EP0634219 A1 EP 0634219A1
Authority
EP
European Patent Office
Prior art keywords
semolina
grinding
flow
stream
housing wall
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
EP94109122A
Other languages
German (de)
English (en)
Other versions
EP0634219B1 (fr
Inventor
Horst Dipl.-Ing. Brundiek
Willy Dipl.-Ing. Lohle
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
Application filed by Loesche GmbH filed Critical Loesche GmbH
Publication of EP0634219A1 publication Critical patent/EP0634219A1/fr
Application granted granted Critical
Publication of EP0634219B1 publication Critical patent/EP0634219B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • 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
    • B02C15/001—Air flow directing means positioned on the periphery of the horizontally rotating milling surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/30—Driving mechanisms
    • 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
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • 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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge
    • B02C2013/28609—Discharge means
    • 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 method for comminuting material of different grain size according to the preamble of claim 1 and a device, in particular for carrying out the method, according to the preamble of claim 15.
  • the flow resistance in the grinding visible space decreases, which means that the conveying energy for a fluid stream to be used on an aggregate can be reduced.
  • the mechanical energy required for an external mechanical semolina return arranged outside the grinding viewing area is comparatively significantly lower.
  • an airflow roller mill with an integrated Sifter a fluid such as air or a gas, is introduced into a grinding classifying room.
  • the fluid is brought to such a high speed in an annular space between the grinding bowl and the housing wall that essentially all regrind particles thrown out from the grinding bowl under centrifugal force, i.e. from feed piece size to finished grain size, are captured by the fluid flow and transported to the classifier as a two-phase mixture become.
  • regrind particles are removed from the grinding, classifying, drying and pneumatic transport process taking place in the mill and classifier, as a result of which one of the numerous influencing variables which influence a complex dynamic grinding classifier system is changed.
  • a reduction in the flow energy leads to a saving in pneumatic conveying energy at the fan.
  • this procedure is associated with a reduced grinding capacity, so that, when viewed in a complex manner, there is no saving in the total specific work requirement.
  • the invention has for its object to provide a method and a device for shredding material, which leads to reduced energy consumption per metric ton of ground material and enables an increased throughput of the shredding device or shredding system.
  • the object is achieved by the characterizing features of claim 1 and in terms of furnishings by the characterizing features of claim 15.
  • the regrind particles centrifugally thrown out of a rotating, horizontally arranged, for example almost flat, inclined or also hollowed-out grinding path are exposed to a rotational flow of a fluid conveying stream introduced on the circumference of the grinding path.
  • the regrind particles which are transported in a helical upward movement, form an almost deaerated dense stream due to a defined flow rate and the rotation or swirl flow of a gas guide device, which is at least partially removed from the grinding classifying chamber and preferably returned to the grinding chamber via an external conveyor device .
  • the basic idea of the invention is to design an almost fine material-free, external semolina stream essentially directly on the housing wall as a vented dense stream and to remove at least partially its dead mass or dead material.
  • the method according to the invention consequently also provides for the saving of pneumatic conveying energy by removing semolina from the grinding visible space in order to reduce the flow resistance.
  • semolina from the grinding visible space in order to reduce the flow resistance.
  • only those grains are removed which burden the grinding visible space as dead mass or dead material because they do not continuously participate in the grinding and viewing process.
  • the almost fine material-free, vented dense stream referred to as the outer semolina stream
  • the outer semolina stream is fed through a defined flow at a speed> 30 m / s, in particular with a gas guiding device that produces a swirl, for example by angular adjustment of a blade ring in the tangential direction produce.
  • the rotational flow or the Flow swirl leads to a helical upward movement of the fluid flow with the regrind particles thrown off the grinding bowl. Due to the inherent tendency to expand, a swirl flow creates centrifugal forces which also act on the regrind particles.
  • the regrind particles are subject to a drag force of the fluid flow generated in the direction of the classifier, that is to say towards the center of the mill classroom.
  • the equilibrium conditions that arise depend on the mass of the regrind particles.
  • semolina portions of the external semolina flow of 200% +/- 50%, based on the finished product rate of the mill, or any underlying percentage can be removed without the effectiveness of the comminution process and the screening being adversely affected.
  • a continuous removal of the outer grains not involved in the grinding and classifying process leads to a continuous relief of the grinding class and to a reduction of the flow energy to be used by approx. 30%.
  • the disadvantage of the previously known method that sufficient ground particles are also removed from the grinding process does not exist.
  • a device for comminuting material with an airflow mill in particular for carrying out the method, provides a gas guiding device designed by a known blade ring in an annular space around a rotating grinding bowl for forming a rotational and circulating flow of the fluid delivery flow and at least one removal device in the area of the housing wall of the airflow mill for a portion of an external semolina flow or the deaerated dense stream.
  • a preferred removal device is a catch pocket connected tangentially in the mill and / or classifier housing, in which the semolina rotating on the wall under the influence of centrifugal force and gravity can collect and self-vent due to dynamic pressure.
  • the catch bag is expediently provided with an outlet connection which opens into an airlock.
  • the extracted semolina in the vented, compressed state, in particular by gravity, can be fed from the catch bag to a mechanical conveyor, for example a bucket elevator.
  • This mechanical conveyor device can be connected to a further comminution device.
  • the mechanical conveying device for returning the semolina portions removed is preferably connected to a feed device for the feed material or directly to the grinding visible space or the grinding bowl for almost central feeding.
  • the mechanical conveying device is at least partially given the internal grains separated from the classifier and / or regrind particles falling down over the grinding bowl and returned to a further comminution, in particular the grinding bowl of the airflow roller mill.
  • the gas guiding device is to be designed in such a way that a fluid flow entering the air flow mill from below the grinding bowl is forced into a rotational flow or swirl flow, so that the regrind particles thrown off the grinding bowl are transported upwards in a helical path directly on the housing wall.
  • Flow channels are expediently formed by vanes of a vane ring arranged at an angle and in the tangential direction, through which a fluid stream exerts an ejector effect at a speed> 30 m / s, so that the rotating dense stream or external semolina stream is generated on the housing wall.
  • FIG. 1 an airflow mill 4 is shown with a grinding bowl 6, on the grinding track 5 grinding rollers 7 frictionally roll or be driven separately.
  • a sifter 29 with a sifter rotor 24 is provided above the grinding rollers 7 and in an integrated arrangement within a grinding sifting space 8 delimited by a housing wall 15.
  • the material of different grain size to be shredded is fed as feed material 10 almost centrally to the grinding path 5 via a feed device, not shown.
  • a blade ring 16 of blades which are designed and arranged in a defined manner forms an annular gas guide device 19, the flow channels 20 of which impart an ejector effect to a flow 9 of a fluid, in particular a gas .
  • a rotation and circulation flow 21, 22 is generated in the immediate vicinity of the housing wall 15, in which regrind particles 13 are received in an almost vented dense stream 17.
  • the deaerated dense stream 17 is formed by a blade ring sifting of the comminuted regrind particles 13 thrown off from the grinding track 5 to the annular gas guide device 19.
  • This vented dense stream 17 is not deflected in the direction of classifier 29 due to the helical upward movement of the flow swirl generated in the gas guide device 19.
  • gravity acts, and together with an ejector effect on each flow channel 20, a circulation flow 21, 22 is formed about an almost vertical axis, which is characterized by an inner upward flow 21 and an outer downward flow 22.
  • This total flow which extends in the wall area of the airflow mill 4, is of limited radial expansion and represents a particle torus.
  • the particle torus can be regarded as dead mass 23, which thickens up to a certain radial extent and is then only suspended in a flow space without participating in the grinding and classifying.
  • These portions originate from a circulation (arrows 40) within the grinding visible space 8.
  • a higher portion flows from above through the center of the air flow mill due to the lower partial pressure and with the comminuted ground material flow via the grinding path 5 to the edge of the grinding bowl 6.
  • a relatively small proportion is sucked in between the upward flow 40 and the housing wall 18.
  • the centrifugal force of the vertical or swirl flow is used to remove semolina portions of the outer semolina flow 18.
  • FIGS. 2 and 3 show a highly schematic representation of an arrangement and design of a removal device 25 in the upper region of the housing wall 15.
  • the removal device 25 is designed as a catch pocket 27 arranged tangentially on the housing wall 15 at the level of the sifter 29.
  • the catch pocket 27 has a slit-like removal area 26 and a bottom outlet opening 28 arranged at right angles to the removal area on.
  • the almost slot-like removal area 26 of the removal device 25 is provided with an adjustable baffle plate 31 for adjustable removal of the semolina, which is articulated on the housing wall 15 via a vertical pivot axis 32.
  • the drain opening 28 can be designed as an adjustable opening analogous to the removal area 26.
  • FIG. 4 shows a system diagram with the essential units for carrying out the method according to the invention.
  • the material of different grain size to be shredded is fed to a feed device 38, for example in the form of a three-component mixture, and fed into the airflow mill 4 via an inlet connection 39.
  • a feed device 38 for example in the form of a three-component mixture
  • semolina portions of the outer semolina stream 18 are fed from a catch bag 27 as a removal device 25 and with the aid of a mechanical conveyor device 36, for example a bucket elevator.
  • a mechanical conveyor device 36 for example a bucket elevator.
  • regrind particles 33, in particular semolina which have failed downwards via the annular gas guide device 19 (FIG.
  • the tangentially arranged removal device 25 is provided with an outlet connection 34, optionally a metering discharge conveyor 41 and with an air lock 37.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Crushing And Pulverization Processes (AREA)
EP94109122A 1993-07-14 1994-06-14 Procédé et dispositif de broyage de matériau avec une granulométrie variable Expired - Lifetime EP0634219B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4323587A DE4323587C2 (de) 1993-07-14 1993-07-14 Verfahren und Einrichtung zum Zerkleinern von Material unterschiedlicher Körnung
DE4323587 1993-07-14

Publications (2)

Publication Number Publication Date
EP0634219A1 true EP0634219A1 (fr) 1995-01-18
EP0634219B1 EP0634219B1 (fr) 1999-09-15

Family

ID=6492786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109122A Expired - Lifetime EP0634219B1 (fr) 1993-07-14 1994-06-14 Procédé et dispositif de broyage de matériau avec une granulométrie variable

Country Status (13)

Country Link
US (1) US5531388A (fr)
EP (1) EP0634219B1 (fr)
JP (1) JPH07163895A (fr)
KR (1) KR950002859A (fr)
CN (1) CN1122730A (fr)
AT (1) ATE184508T1 (fr)
CA (1) CA2127389A1 (fr)
DE (2) DE4323587C2 (fr)
DK (1) DK0634219T3 (fr)
ES (1) ES2138636T3 (fr)
TW (1) TW302298B (fr)
VN (1) VN339A1 (fr)
ZA (1) ZA944315B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0979675A1 (fr) * 1998-08-11 2000-02-16 Loesche Gmbh Procédé et installation de broyage de matières premières
CN109847888A (zh) * 2017-11-30 2019-06-07 曾金穗 粉体干式微细化装置
US20220219174A1 (en) * 2019-06-21 2022-07-14 Librixer Ab Librixer Comminutor and Particle Air Classifier System

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2179899T3 (es) * 1996-03-19 2003-02-01 Crompton Gmbh Formulaciones homogeneas de compuestos organicos metalicos, sensibles a la oxidacion, en parafinas, y procedimiento para su preparacion.
US5769332A (en) * 1996-04-10 1998-06-23 Cgc Inc. Efficient production of landplaster by collecting and classsifying gypsum fines
DE19651103A1 (de) * 1996-12-09 1998-06-10 Krupp Polysius Ag Verfahren und Wälzmühle zum Zerkleinern von relativ hartem, sprödem Mahlgut
US6038987A (en) * 1999-01-11 2000-03-21 Pittsburgh Mineral And Environmental Technology, Inc. Method and apparatus for reducing the carbon content of combustion ash and related products
US6820829B1 (en) * 2000-02-25 2004-11-23 Exportech Company, Inc. Method and apparatus for separating material
DE102008019830B4 (de) * 2008-04-11 2019-01-24 Khd Humboldt Wedag Gmbh Umwälzmahlanlage mit außen liegenden Steigrohren
CN102580839B (zh) * 2011-01-05 2014-04-16 张仁鸿 粉体分离装置
DE102011014592A1 (de) * 2011-03-21 2012-09-27 Loesche Gmbh Wälzmühle
CN107614112B (zh) * 2015-06-01 2019-06-14 Fl史密斯公司 立式辊磨机
CN107413455A (zh) * 2016-03-25 2017-12-01 成都宸鸿科技有限公司 一种全自动辊切磨碎机
CN107398337B (zh) * 2016-05-19 2023-02-28 华电电力科学研究院 一种全自动干燥磨粉系统及方法
CN106964547A (zh) * 2017-05-15 2017-07-21 江西省浩燃冶金设备有限责任公司 一种矿山开采分级装置
CN107971097B (zh) * 2017-10-24 2023-10-27 河北凯诺制药有限公司 一种中药粉碎机
CN108100674B (zh) * 2017-11-28 2024-04-30 佛山科学技术学院 一种化工原料吸取器
CN111052918B (zh) * 2019-12-03 2024-02-13 农业农村部南京农业机械化研究所 一种有序抛秧机气力定植立苗系统及方法
CN111450970B (zh) * 2020-04-13 2021-03-09 青岛理工大学 同腔集成立式核桃壳高速多级超微粉碎装置及方法
CN113731549B (zh) * 2020-05-28 2022-12-06 临沂会宝岭铁矿有限公司 一种立磨机预选系统
CN113457792B (zh) * 2021-07-20 2022-06-21 天津水泥工业设计研究院有限公司 一种立式辊磨选粉机回料控制装置设计方法
CN114733614B (zh) * 2022-05-26 2023-12-12 淄博大力矿山机械有限公司 无轴高效轮碾制粉机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152297B (de) * 1956-07-24 1963-08-01 Loesche Kg Luftstrommuehle
DE3202054A1 (de) * 1982-01-23 1983-08-04 Steag Ag, 4300 Essen Kohlenmahlanlage mit griessruecklauf und abtrennung von pyrit und bergen
EP0112022A2 (fr) * 1982-12-16 1984-06-27 F.L. Smidth & Co. A/S Procédé et installation pour le broyage de matériaux pulvérulents ou granulaires
US4550879A (en) * 1983-02-10 1985-11-05 Kabushiki Kaisha Hosokawa Funtai Kogaku Kenkyusho Vertical type pulverizing and classifying apparatus
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE141791C (fr) * 1902-06-07
US3510071A (en) * 1967-06-29 1970-05-05 Foster Wheeler Corp Pyrite and tramp iron removal apparatus for coal pulverizers
US3677478A (en) * 1970-11-19 1972-07-18 Schutte Pulverizer Co Inc Metal trap for hammer mills or the like
DE2505379A1 (de) * 1975-02-08 1976-08-19 Loesche Kg Kombinierter fluegel-/rotorsichter, insbesondere fuer waelzmuehlen
US4084754A (en) * 1976-07-27 1978-04-18 Loesche Hartzerkleinerungs-Und Zementmaschinen Gmbh & Co. Kg Combined vane-rotor separator
DD141791A1 (de) * 1977-11-09 1980-05-21 Helmut Engelmann Gehaeuseoberteil fuer waelzmuehlen
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
DE3515444A1 (de) * 1985-04-29 1986-10-30 Claudius Peters Ag, 2000 Hamburg Waelzmuehle
GB2214106B (en) * 1987-12-24 1991-06-26 Smidth & Co As F L Vertical roller mill
DE3801229A1 (de) * 1988-01-18 1989-07-27 Krupp Polysius Ag Mahlverfahren sowie mahlanlage
US5251831A (en) * 1991-01-21 1993-10-12 Mitsubishi Jukogyo Kabushiki Kaisha Roller mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152297B (de) * 1956-07-24 1963-08-01 Loesche Kg Luftstrommuehle
DE3202054A1 (de) * 1982-01-23 1983-08-04 Steag Ag, 4300 Essen Kohlenmahlanlage mit griessruecklauf und abtrennung von pyrit und bergen
EP0112022A2 (fr) * 1982-12-16 1984-06-27 F.L. Smidth & Co. A/S Procédé et installation pour le broyage de matériaux pulvérulents ou granulaires
US4550879A (en) * 1983-02-10 1985-11-05 Kabushiki Kaisha Hosokawa Funtai Kogaku Kenkyusho Vertical type pulverizing and classifying apparatus
DE4124416A1 (de) * 1991-07-23 1993-01-28 Krupp Polysius Ag Einrichtung und verfahren zur zerkleinerung von mahlgut unterschiedlicher koernung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0979675A1 (fr) * 1998-08-11 2000-02-16 Loesche Gmbh Procédé et installation de broyage de matières premières
CN109847888A (zh) * 2017-11-30 2019-06-07 曾金穗 粉体干式微细化装置
US20220219174A1 (en) * 2019-06-21 2022-07-14 Librixer Ab Librixer Comminutor and Particle Air Classifier System

Also Published As

Publication number Publication date
DE4323587A1 (de) 1995-01-19
ES2138636T3 (es) 2000-01-16
US5531388A (en) 1996-07-02
KR950002859A (ko) 1995-02-16
EP0634219B1 (fr) 1999-09-15
DK0634219T3 (da) 2000-04-03
TW302298B (fr) 1997-04-11
JPH07163895A (ja) 1995-06-27
CA2127389A1 (fr) 1995-01-15
ATE184508T1 (de) 1999-10-15
CN1122730A (zh) 1996-05-22
ZA944315B (en) 1995-02-13
DE59408740D1 (de) 1999-10-21
VN339A1 (en) 1997-04-25
DE4323587C2 (de) 1996-07-18

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