EP1908523A1 - Zerkleinerungsvorrichtung für mineralienhaltiges Material - Google Patents

Zerkleinerungsvorrichtung für mineralienhaltiges Material Download PDF

Info

Publication number
EP1908523A1
EP1908523A1 EP07291202A EP07291202A EP1908523A1 EP 1908523 A1 EP1908523 A1 EP 1908523A1 EP 07291202 A EP07291202 A EP 07291202A EP 07291202 A EP07291202 A EP 07291202A EP 1908523 A1 EP1908523 A1 EP 1908523A1
Authority
EP
European Patent Office
Prior art keywords
particles
air
outlet
separation chamber
stream
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.)
Withdrawn
Application number
EP07291202A
Other languages
English (en)
French (fr)
Inventor
René Brunone
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1908523A1 publication Critical patent/EP1908523A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after 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
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • 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
    • B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation

Definitions

  • the invention generally relates to the grinding of mineral materials.
  • the invention relates to a grinding device for mineral materials, of the type comprising a grinder capable of crushing blocks of materials and to divide them into particles.
  • These particles at the outlet of the mill, have a particle size typically ranging from 0 mm to 40 mm, with a significant proportion of particles smaller than 1 mm.
  • the particles fall on a conveyor belt, which takes them to a screening plant. In this installation, the particles are separated by size category.
  • the invention aims to provide a grinding device whose operating conditions are improved.
  • the invention relates to a grinding device of the aforementioned type, characterized in that it comprises means for separating the particles by circulating air into a first particle stream of relatively smaller particle size and a second stream particles of relatively larger particle size.
  • the grinding device 10 shown in FIG. 1 comprises a loading hopper 12 capable of receiving blocks of material to be ground, a crusher 14 capable of crushing blocks of materials and dividing them into particles, means 16 for separating the particles. by circulating air in a first particle stream of relatively smaller particle size and a second particle stream of relatively greater particle size, a support frame 18 of the mill in which is formed an outlet well 19 for the particles of the second stream , and a conveyor belt 20 capable of collecting the particles of the second stream falling from the outlet well 19 and transporting them to another installation, for example to a screening installation.
  • the device 10 is intended to grind mineral materials such as granite, porphyry, flint, being in the form of blocks. These blocks typically come from stone quarries.
  • the hopper 12 is located in the upper part of the grinding device 10 and is supported by the frame 18. It has the shape of a funnel converging downwards to the inlet orifice 21 of the grinder 14. The hopper dimensions adapted to the size of the blocks to be treated.
  • the mill 14 is, for example, of the eccentric cone type, and comprises an outer envelope 22, an eccentric cone 24 disposed inside the envelope 22, and means 26 for driving the eccentric cone 24.
  • the outer casing 22 has a frustoconical shielded upper portion 28 of vertical central axis, extended downwards by a cylindrical skirt 30 coaxial with the portion 28.
  • the frustoconical portion 28 defines the inlet 21 of the mill and flares out from from this inlet 21 to the cylindrical skirt 30.
  • the skirt 30 defines, at its lower end, the outlet 32 of the mill.
  • the eccentric cone 24 is a solid piece disposed within the frustoconical portion 28.
  • the eccentric cone 24 is delimited upwards by a plurality of frustoconical surfaces 34 placed in the extension of each other, and converging all upwards.
  • the surfaces 34 define with the portion 28 of the outer envelope an annular space for receiving and crushing the blocks of materials. In a horizontal plane, the passage section of this space is reduced from top to bottom, then increases slightly, as shown in FIG. 1, because of the respective inclinations of the frustoconical portion 28 and the surfaces 34.
  • the drive means 26 of the eccentric cone comprise a motor 36 and a kinematic chain 38 driving the cone 24 by the motor 36.
  • the central axis YY 'of the cone 24 is slightly inclined with respect to the vertical central axis XX
  • the kinematic chain 38 drives the cone 24 in an eccentric movement around the vertical axis X-X ', the central axis YY' of the cone 24 rotating about the vertical axis XX '.
  • the separation chamber 40 is housed in a portion of the frame 18 disposed immediately below the grinder 14.
  • the separation chamber 40 is delimited by a cylindrical outer peripheral wall 52 of central vertical axis and coaxial to the X-X 'axis, by an upper horizontal wall and a lower support structure 54.
  • the particle inlet is formed in the upper wall and the outlet 42 of the second flow particles through the lower structure 54.
  • the lower support structure 54 is formed of a plurality of support arms of the elements of the chamber 40. It is open between the arms for passing the second particle stream.
  • the air inlets 44 are regularly distributed around the central axis XX 'and are formed in the cylindrical outer wall 52.
  • the air inlets 44 have a duckbill shape, elongated in a horizontal plane and of low height vertically, relative to their width in a horizontal plane (see Figure 2).
  • the charged air outlet 46 is disposed at the center of the chamber 40, on the X-X 'axis, slightly above the lower structure 54. It has a large passage section compared to the passage section of an air inlet 44.
  • the outlet 46 is open upwards, a protection plate 56 being disposed above the outlet 46, at the right of this outlet, so as to prevent the particles of the second flow from falling by gravity from the entrance of chamber 40 into exit 46.
  • the means 50 comprise a cyclone 58, or a filter, capable of separating the air from the particles of the first stream, provided with an inlet 60 connected to the charged air outlet 46 by a connection pipe 62, an outlet 64 for the particles of the first stream, and a purified air outlet 66.
  • the outlet 64 is located at the foot of the cyclone 58. It comprises a rotary valve (not shown).
  • a conveyor 68 is disposed under the outlet 64. The conveyor 68 is capable of driving the particles of the first stream from the cyclone 58 to an installation located at a distance from the grinding device 10, for the purpose of packaging or using the particles of the first stream.
  • the purified air outlet 66 is provided at the top of the cyclone 58.
  • the means 48 for blowing air into the separation chamber 40 comprise an air circulation member 70, typically a fan, provided with a suction 72 connected to the purified air outlet 66 of the separator by means of a piping system. link 74 and a fan outlet 76 connected to the air inlets 44 of the separation chamber.
  • an air circulation member 70 typically a fan
  • suction 72 connected to the purified air outlet 66 of the separator by means of a piping system.
  • link 74 and a fan outlet 76 connected to the air inlets 44 of the separation chamber.
  • the fan outlet 76 is connected to the inputs 44 through an annular manifold 78 disposed around the separation chamber 40, a connecting pipe 80 communicating the fan outlet 76 with the annular manifold 78, and distribution pipes 82 each extending radially from the manifold 78 to an inlet 44.
  • the suction depression of the circulation member 70 is about -300 mm of water column.
  • the air flow at the outlet of the circulation member is between 1000 and 10000 m 3 / hour, for example between 5000 and 10000 m 3 / hour.
  • the circulation member 70 comprises control means (not shown) capable of varying the air flow at the outlet and the vacuum at the suction. The output rate is thus likely to be modified depending on the size of the particles that one seeks to cause in the first flow. The more we seek to capture large particles in the first flow, the higher the air flow at the output of the circulation member 70 will be high.
  • the particles At the outlet of the mill 14, and therefore at the inlet of the separation chamber 40, the particles have, for example, a particle size ranging from 0 mm to 40 mm. Particles of particle size between 0 mm and 1 mm are typically driven by air and form the first flow. The other particles form the second stream and leave the chamber through the outlet 54.
  • the outlet well 19 is a slot formed in the lower part of the frame 18. It is placed immediately below the outlet 54 of the separation chamber 40, coinciding with this outlet.
  • the blocks of mineral material to be ground are conveyed to the hopper 12 using a conveyor belt.
  • the cone 24 is driven by the motor 36 and the kinematic chain 38, and describes an eccentric movement around the vertical axis X-X ', which has the effect of pressing the blocks between the cone 24 and the wall 28 and crush them.
  • the blocks are thus divided into several pieces of large sizes, which can slide down between the cone 24 and the wall 28, in an area of the annular space of reduced section.
  • the large pieces of the blocks are ground again to obtain small particles which, in turn, can slide down.
  • the particles obtained by dividing the blocks end up arriving at the bottom of the frustoconical surfaces 34 delimiting the cone upwards, and then fall by gravity inside the skirt 30 to the outlet 32 of the mill. They then enter the separation chamber 40.
  • the circulation member 70 blows air inside the chamber 40 through the inlets 44.
  • the air circulates radially from the outside to the center of the chamber 40 and leaves the chamber through the outlet of the chamber. 46.
  • the particles from the mill 14 pass through the separation chamber 40 from the grinder outlet 32 to the outlet 54 of the chamber.
  • the air blown from the inlets 44 mixes with the particles passing through the chamber 40 and causes the smallest and lightest particles, that is to say the particles of the first stream.
  • the particles of the second stream because of their higher weight, are not driven and leave the chamber 40 through the outlet 42. These particles form the second stream, pass through the outlet well 19 and fall on the conveyor belt 20 which transports remotely from the grinding device 10, for example to a screening installation.
  • the charged air particles of the first stream leaves the chamber 40 through the outlet 46 and reaches the cyclone 58.
  • the particulate-laden air of the first stream rises along the cyclone in a swirling motion, so that the particles of the first stream are pressed against the outer wall of the cyclone by centrifugal force and slide down to the outlet. 64.
  • the grinding device described above has many advantages.
  • the means for separating the particles by air circulation make it possible to capture almost all the particles of small particle size coming from the mill, for example less than 1 mm in size, and to separate them from the other particles. These particles are picked up before falling on the conveyor belt, so that the amount of dust emerging around the grinding device is considerably reduced. The working conditions around this mill and the maintenance of the equipment are considerably improved.
  • the grinding device can have multiple variants.
  • the separator may not be a cyclone, but may for example be a filter, especially a bag filter.
  • the air circulation member can be of any type, and can be for example a blower, a vacuum pump, an air compressor, etc.
  • the mill 14 may also be of any type and is not necessarily an eccentric cone mill.
  • the crusher may be of smooth-cylinder, hammer or bar type.
  • the means for separating the particles may comprise several separators in series or in parallel.
  • the air inlets 44 in the separation chamber are not necessarily shaped duckbill. They may have other shapes, round, rectangular, etc. .... Moreover, the air inlets are not necessarily arranged at the outer wall of the chamber 40 but may be arranged inside the chamber. chamber, between wall 40 and exit 46.
  • the separation chamber 40 is not necessarily cylindrical but may have an oval, rectangular or other section.
  • the chamber 40 may comprise a single air inlet 44, for example a circular slot extending along the entire periphery of the chamber.
  • the chamber 40 may comprise several air outlets 46, each connected to the separator 58. These outlets 46 may all be arranged in the center of the chamber 40 on or near the X-X 'axis, or, on the contrary, distributed in different places of the room 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Cyclones (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP07291202A 2006-10-05 2007-10-03 Zerkleinerungsvorrichtung für mineralienhaltiges Material Withdrawn EP1908523A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608766A FR2906735B1 (fr) 2006-10-05 2006-10-05 Dispositif de broyage de materiaux mineraux.

Publications (1)

Publication Number Publication Date
EP1908523A1 true EP1908523A1 (de) 2008-04-09

Family

ID=37969714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291202A Withdrawn EP1908523A1 (de) 2006-10-05 2007-10-03 Zerkleinerungsvorrichtung für mineralienhaltiges Material

Country Status (2)

Country Link
EP (1) EP1908523A1 (de)
FR (1) FR2906735B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113695032A (zh) * 2021-08-20 2021-11-26 孟子悦 一种生物颗粒环保回收装置
CN114789084A (zh) * 2021-09-19 2022-07-26 宁波盈前科技有限公司 一种生物活性有机微量元素螯合物的多级式物料粉碎装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524819A1 (fr) * 1982-04-13 1983-10-14 Smidth & Co As F L Procede et broyeur a meules verticales, pour le classement pneumatique des matieres broyees
DE3441878A1 (de) * 1984-11-16 1986-05-22 Hans-Richard 6470 Büdingen Lenz Hammermuehle
EP0451290A1 (de) * 1989-10-31 1991-10-16 Kansai Zyari Kabushiki-Kaisha Sichter mit schwingmühle
US5312053A (en) * 1993-01-07 1994-05-17 Cedarapids, Inc. Cone crusher with adjustable stroke
US6390396B1 (en) * 1999-10-01 2002-05-21 Matsushita Electric Industrial Co., Ltd. Apparatus for crushing waste products and method of operating the same
JP2004089952A (ja) * 2002-09-03 2004-03-25 Okumura Corp コンクリート破砕物からの不要物除去方法及びその装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524819A1 (fr) * 1982-04-13 1983-10-14 Smidth & Co As F L Procede et broyeur a meules verticales, pour le classement pneumatique des matieres broyees
DE3441878A1 (de) * 1984-11-16 1986-05-22 Hans-Richard 6470 Büdingen Lenz Hammermuehle
EP0451290A1 (de) * 1989-10-31 1991-10-16 Kansai Zyari Kabushiki-Kaisha Sichter mit schwingmühle
US5312053A (en) * 1993-01-07 1994-05-17 Cedarapids, Inc. Cone crusher with adjustable stroke
US6390396B1 (en) * 1999-10-01 2002-05-21 Matsushita Electric Industrial Co., Ltd. Apparatus for crushing waste products and method of operating the same
JP2004089952A (ja) * 2002-09-03 2004-03-25 Okumura Corp コンクリート破砕物からの不要物除去方法及びその装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113695032A (zh) * 2021-08-20 2021-11-26 孟子悦 一种生物颗粒环保回收装置
CN114789084A (zh) * 2021-09-19 2022-07-26 宁波盈前科技有限公司 一种生物活性有机微量元素螯合物的多级式物料粉碎装置
CN114789084B (zh) * 2021-09-19 2023-08-29 宁波盈前科技有限公司 一种生物活性有机微量元素螯合物的多级式物料粉碎装置

Also Published As

Publication number Publication date
FR2906735B1 (fr) 2009-01-23
FR2906735A1 (fr) 2008-04-11

Similar Documents

Publication Publication Date Title
US5505390A (en) Two stage hammer mill with particle separator
US3981454A (en) Waste material processing apparatus
FR2524819A1 (fr) Procede et broyeur a meules verticales, pour le classement pneumatique des matieres broyees
CN101829625B (zh) 集成化制砂成套设备
CN110479462A (zh) 一种无花果果粉生产装置
CA2034619C (en) Two stage separator apparatus
JP2011005468A (ja) 籾摺精米機
CA2670906C (fr) Appareil de selection granulometrique et/ou de sechage de matiere
KR102386275B1 (ko) 기류식 하부이동식 분급분쇄기
CN208526941U (zh) 一种无扬尘石料粉碎机
EP1908523A1 (de) Zerkleinerungsvorrichtung für mineralienhaltiges Material
CN214766103U (zh) 一种负压气力式粮食作物粉碎输送系统
CN208627533U (zh) 一种新型煤灰粉碎装置
BE1020252A3 (fr) Separateur de matieres granuleuses.
EP3164217B1 (de) Verfahren und vorrichtung zum trocknen und zerkleinern von feuchten materialien
CN109701878A (zh) 大米用比重去石机
FR2768352A1 (fr) Procede pour reduire des vegetaux tels que, notamment des branches denudees ou non, des arbustes, des fleurs, des herbes ou autres, en morceaux
CN210125470U (zh) 一种谷物磨粉研磨装置
SU1734832A1 (ru) Центробежна мельница
EP0094307B1 (de) Strahlmühlen
JPH05285411A (ja) 砕砂ダスト除去装置
RU124190U1 (ru) Дробилка для зерна
KR102458453B1 (ko) 석발기가 구비된 곡물 정선장치
JPH10146285A (ja) コーヒーの製造方法及びコーヒーチャフレス装置
JPH02293583A (ja) 乾燥装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20080903

17Q First examination report despatched

Effective date: 20081010

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110503