EP1080786A1 - Procédé, dispositif et système pour broyeur à jet à lit fluidisé - Google Patents

Procédé, dispositif et système pour broyeur à jet à lit fluidisé Download PDF

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Publication number
EP1080786A1
EP1080786A1 EP00117288A EP00117288A EP1080786A1 EP 1080786 A1 EP1080786 A1 EP 1080786A1 EP 00117288 A EP00117288 A EP 00117288A EP 00117288 A EP00117288 A EP 00117288A EP 1080786 A1 EP1080786 A1 EP 1080786A1
Authority
EP
European Patent Office
Prior art keywords
fluid
jet
area
fluidized bed
grinding
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
EP00117288A
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German (de)
English (en)
Other versions
EP1080786B1 (fr
Inventor
Roland Dr.-Ing. Nied
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
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Individual
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Filing date
Publication date
Priority claimed from DE1999139897 external-priority patent/DE19939897A1/de
Priority claimed from DE1999143670 external-priority patent/DE19943670A1/de
Application filed by Individual filed Critical Individual
Publication of EP1080786A1 publication Critical patent/EP1080786A1/fr
Application granted granted Critical
Publication of EP1080786B1 publication Critical patent/EP1080786B1/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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • B02C19/068—Jet mills of the fluidised-bed type
    • 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
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone

Definitions

  • fluidized bed grinding there is a flow in a fluidized bed from a fluid and solid particles suspended in the fluid generated in such a way that the solid particles by energy exchange be crushed.
  • Part of the flow with solid particles below a certain mass or a certain Weight is branched off in a classifier and the further processing e.g. fed in a filter while Solid particles above the aforementioned limit in the Residual flow remain and the fluidized bed grinding again so long be fed until their mass or weight below of the limit.
  • the present invention is concerned with this Phenomenon by showing ways of how the high-energy Fluid jets into the fluidized bed with high energy can be introduced while preventing the solid particles to be dismantled initially without any noteworthy Energy exchange is pushed into the fluidized bed; in other words, it is said to be the fluidized bed solid particles despite the high-energy fluid jets introduced into the fluidized bed in the area of the entry of high-energy fluid jets be held in the fluidized bed so that the energy exchange between solid particles in the fluidized bed already very intensive in the immediate area of entry the high-energy fluid jets into the fluidized bed.
  • the essence of the invention for solving this problem is, on the one hand, that on the solid particles in the area of penetration of the Fluid jets of high energy into the fluidized bed, centrifugal forces like this be brought to effect that energy exchange between the solid particles that are part of the high energy Fluid jets are created immediately after penetration the high energy rays into the fluidized bed begins and on the other hand generally the concentration of the solid particles is improved within the fluid jets.
  • a cylindrical case 1 encloses a chamber 2, which in the lower area Fluid bed 3 takes up and is the actual grinding chamber.
  • This Fluid bed 3 consists of solid particles in a fluid, which are more or less evenly distributed in are suspended in the fluid. They have different masses and should be ground evenly to the finest particles.
  • Jet nozzles 4, 5 high-energy fluid jets 6, 7 blown in which penetrate the fluidized bed 3 in such a way and that solid particles collide and through energy exchange be disassembled.
  • the particles remain in the fluidized bed for so long and especially in the area of high energy in the fluidized bed entering fluid jets 6, 7 until their mass has become so low is that it is from the upward beam 8 - the sum of the clashing and doing the energy exchange energetic between solid particles individual jets 6, 7 entering the fluidized bed 3 are entrained be, while the not yet finely ground Solid particles in the area of the individual jets, i.e. in the actual fluid bed 3 remain and through energy exchange be further disassembled.
  • a fines outlet chamber 9 which in turn is the fines outlet nozzle led out of the housing 1 10 joins. That through the outlet nozzle fine material made from the finest particles leaving the mill suspended in one part of the fluid, the other Processing, for example fed in a filter in which Particles and fluid are separated.
  • the regrind passes through a regrind inlet connection 11 in Cover the housing in the grinder.
  • At 12 is a steam supply for the gap rinsing between the stationary in the housing 1 arranged fine material outlet chamber 9 and one above rotatably arranged classifying wheel 13.
  • the classifying wheel 13 takes advantage of the in it, if necessary between the blades of a bladed sight wheel, prevailing Centrifugal force that only finely ground material in the outlet nozzle 10 arrives while not quite as finely ground Well rejected and using gravity like that original regrind gets into the fluidized bed 3 and continues there is disassembled.
  • the drive 14 of the classifying wheel is outside of the housing 1 mounted on the cover and through the housing cover through functionally connected to the sight wheel 13.
  • the invention can now Fluidized bed jet mill according to FIG. 1 can be implemented, that while maintaining the rotation of the sight wheel opposite the mill housing 1, the mill in its entirety for turning is brought about its longitudinal axis.
  • the mill housing 1 is on its upper and lower ends in suitable bearings 15, 16 and the mill housing 1 is a rotary drive 17th assigned so that the mill is driven by such a drive Speed or peripheral speed set in rotation the arrows 18 marked, counteracting the inward beam forces Centrifugal force and the transfugal and the transpedal energies are balanced against each other, that an energy exchange between solid particles of the Fluid bed and optionally the energy rays 6, 7 also in the areas immediately before the grinding nozzles.
  • FIG. 1 While the mill according to FIG. 1 is a known, originally fixed fluid bed jet mill, which was redesigned according to the invention by the housing 1 is made to rotate about its longitudinal axis 1a, is Fluid bed jet mill according to FIG. 2 from the outset according to the invention educated.
  • An essential part is a rotor 2.1 made of an inner housing 2.2 and an outer housing 2.3.
  • Inner housing 2.2 and outer housing 2.3 are rotatably connected to each other, what by Welding beads 2.4 is indicated. They are so assigned to one another essentially cylindrical parts that between them a fluid-tight annular chamber 2.5 is formed and that Inner housing 2.2 encloses a grinding chamber 2.6.
  • An approximately frustoconical Cover plate 2.7 of the inner housing 2.2 is from passes through a regrind inlet pipe 2.8, so that through the regrind inlet pipe 2.8 the suspension of carrier fluid and therein suspended solid particles enter the grinding chamber 2.6, in which the solid particles are subjected to the grinding process become.
  • a second cover plate 2.9 is the first cover plate 2.7 opposite and is penetrated by a fine material outlet pipe 2.10, so through the fine material outlet pipe 2.10 the suspension Carrier fluid and suspended therein to the desired low Mass of ground solid particles, that is, on one Desired fineness of ground product from the grinding chamber 2.6 are removed and sent for further processing can.
  • the cover plates 2.7 and 2.9 are inclined towards each other that they are on their larger, same sizes with the cylindrical peripheral wall 2.11 of the inner housing 2.2 connected are and assigned to each other so that regrind inlet pipe 2.8 and fine material outlet pipe 2.10 assigned to each other with the same axis are.
  • a traffic cone 2.12 or 2.13 is arranged, of which the traffic cone 2.12 assigned to the inlet pipe 2.8 into the Grinding chamber 2.6 entering regrind in the area of the cylindrical Circumferential wall 2.11 brings or this flow course supported, while that assigned to the fine material outlet pipe 2.10 Traffic cone 2.13 from the edge of the fine material outlet pipe 2.10 expanded in a funnel shape that together with the Traffic cone 2.12 a well-defined grinding chamber core area defined between inlet pipe 2.8 and outlet pipe 2.10.
  • the grinding jets 2.16 and 2.17 are formed by Fluid conveyed through the jet nozzles 2.14 and 2.15, after it has been removed from the annular chamber 2.5.
  • the feed of the high-energy fluid into the down to the jet nozzles 2.14 and 2.15 closed annulus 2.5 is from a pressurized fluid source out through a concentrically the regrind inlet pipe 2.8 surrounding inlet port 2.18.
  • FIG. 3 shows a variant of the device according to FIG. 2, which differs from the embodiment according to FIG. 2 distinguishes that instead of storage on both sides of the mill the bearings in bearings 2.19 and 2.20 are overhung, by the supports 3.18 (in Fig.2 supports 2.18) in the two axially offset bearings 3.19 and 3.20 rotatable is stored.
  • a wind sifter 3.25 which is essential Visible a radial from the outside inwards Blown through sight wheel 3.26 in a housing 3.27.
  • the fine material to be sifted comes in from the mill the housing 3.27 so that it fits into the radially outer ends of the Flow channels between the blades of the classifier wheel 3.26 reached.
  • the relative fines come from the inner ends the vane channels in the centrally located fine material discharge 3.28 to leave the housing 3.27 through it.
  • the relative coarser visible material is at the outer ends of the blade channels rejected and falls down into the funnel-shaped part 3.27a of the housing 3.27, from where it is via a line 3.29 the coarse material to be fed to the mill is mixed and one repeated grinding process is subjected.
  • the wind sifter which is connected downstream in FIG. 3 of the mill 4 as an internal device in the Mill integrated.
  • the grinding chamber 4.6 is on the inside End of the fine material spout protruding into the grinding chamber 4, 6 4.10 which flowed radially from the outside to the inside, Bladed classifying wheel 4.13 mounted in a rotationally fixed manner.
  • the ground Well gets to the outer ends of the vane channels, and through through them particles below a predetermined mass limit in the fine material outlet nozzle 4.10, around mill and sifter to leave while coarser particles are above this mass limit rejected and subjected to a renewed grinding process become. While both previous solutions of the fines outlet nozzle firmly connected to the mill housing and with this was rotatable, in the solution according to FIG.
  • the fine material outlet nozzle firmly connected to the sight wheel 4.13 and in Bear 4.30 to 4.31 in the assembly from inner housing 4.2 and 4.9 rotatably mounted, so that the sight wheel with the for Sighting optimal speed relative to the assembly from the inner housing 4.2 and outer housing 4.9 can be operated.
  • the The drive acts on the fine material outlet nozzle 4.10 and above it on the classifying wheel 4.123.
  • the grinding nozzles see above the embodiment is the same as below the center line 4.21 Embodiments described so far.
  • the grinding nozzles 4.14 and 4.15 are installed in such a way that the high-energy ones Grinding jets 4.16 and 4.17 parallel to the axis of rotation 4.21 of the system are blown so that the centrifugal forces act laterally on the fluid bed in the grinding chamber and whose solid particles in the area between the grinding nozzles the grinding rays crowd.
  • 6A can be seen like the hydrostatic or quasi-hydrostatic pressure (corresponding to gas or liquid as a fluid) through the arrows 6.P, over the length 6.L of the grinding jet 6.6, whose longitudinal axis 6.61 with the axis of rotation 6.21 of the mill in the 6A includes a right angle, radially rises from the inside out and in the area of the outlet the nozzle 6.4 is the largest.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
EP00117288A 1999-08-23 2000-08-17 Procédé, dispositif et système pour broyeur à jet à lit fluidisé Expired - Lifetime EP1080786B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1999139897 DE19939897A1 (de) 1999-08-23 1999-08-23 Verfahren zur Fließbettstrahlmahlung, Vorrichtung zur Durchführung dieses Verfahrens und Anlage mit einer solchen Vorrichtung zur Durchführung dieses Verfahrens
DE19939897 1999-08-23
DE19943670 1999-09-13
DE1999143670 DE19943670A1 (de) 1999-09-13 1999-09-13 Verfahren zur Fließbettstrahlmahlung, Vorrichtung zur Durchführung dieses Verfahrens und Anlage mit einer solchen Vorrichtung zur Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
EP1080786A1 true EP1080786A1 (fr) 2001-03-07
EP1080786B1 EP1080786B1 (fr) 2009-06-10

Family

ID=26054696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117288A Expired - Lifetime EP1080786B1 (fr) 1999-08-23 2000-08-17 Procédé, dispositif et système pour broyeur à jet à lit fluidisé

Country Status (5)

Country Link
US (1) US6398139B1 (fr)
EP (1) EP1080786B1 (fr)
JP (1) JP4801832B2 (fr)
DE (1) DE50015655D1 (fr)
ES (1) ES2327810T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1754539A1 (fr) * 2005-08-18 2007-02-21 Wacker Chemie AG Broyeur à jet à lit fluidisé et procédé de fragmentation de silicium
DE102006017472A1 (de) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
KR100807710B1 (ko) * 2005-08-18 2008-02-28 와커 헤미 아게 실리콘 분쇄 방법 및 장치
WO2008046403A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
WO2008046404A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
CN100464906C (zh) * 2005-09-15 2009-03-04 自贡硬质合金有限责任公司 采用气流粉碎、分级生产碳化钨粉的方法
US8047458B2 (en) 2006-05-17 2011-11-01 Roland Nied Method for producing very fine particles by means of a jet mill

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6398139B1 (en) * 1999-08-23 2002-06-04 Roland Nied Process for fluidized-bed jet milling, device for carrying out this process and unit with such a device for carrying out this process
DE10033628A1 (de) * 2000-07-11 2002-01-24 Hosokawa Alpine Ag & Co Fliessbett-Gegenstrahlmühle
FR2941389B1 (fr) * 2009-01-29 2011-10-14 Fives Fcb Dispositif de separation granulometrique selective de matieres pulverulentes solides, a action centrifuge, et procede d'utilisation d'un tel dispositif
US9555416B2 (en) * 2010-07-30 2017-01-31 Hosokawa Micron Corporation Jet mill
WO2014034788A1 (fr) * 2012-09-03 2014-03-06 クラレノリタケデンタル株式会社 Composition durcissable à usage dentaire
DE102018008127B4 (de) 2018-10-13 2022-06-09 Hosokawa Alpine Aktiengesellschaft Blaskopf und Verfahren zur Herstellung einer Mehrschichtschlauchfolie
DE102018009632B4 (de) 2018-12-11 2021-12-09 Hosokawa Alpine Aktiengesellschaft Vorrichtung zum Aufwickeln und Wickelwechsel von bahnförmigem Material und ein Verfahren dafür
DE102020006008B3 (de) 2020-10-01 2022-03-31 Hosokawa Alpine Aktiengesellschaft Fließbettgegenstrahlmühle zur Erzeugung feinster Partikel aus Aufgabegut geringer Schüttdichte und Verfahren dafür
JP7158754B2 (ja) * 2020-10-13 2022-10-24 杉山重工株式会社 ジェットミル及びジェットミルの稼働方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104091A5 (fr) * 1970-08-14 1972-04-14 Alpine Ag
DE19718668A1 (de) * 1997-05-02 1998-11-05 Hosokawa Alpine Ag Verfahren zum Trennen und kontinuierlichen Austragen von schwer dispergierbaren Bestandteilen

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Publication number Priority date Publication date Assignee Title
JPH0613092B1 (fr) * 1985-03-01 1994-02-23 Freunt Ind Co Ltd
JPS62182139A (ja) * 1986-02-06 1987-08-10 日本鋼管株式会社 スラグ処理方法及び装置
IT1237296B (it) * 1989-11-28 1993-05-27 Metodo per il recupero delle sabbie di fonderia esauste mediante arrostimento.
US6398139B1 (en) * 1999-08-23 2002-06-04 Roland Nied Process for fluidized-bed jet milling, device for carrying out this process and unit with such a device for carrying out this process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104091A5 (fr) * 1970-08-14 1972-04-14 Alpine Ag
DE19718668A1 (de) * 1997-05-02 1998-11-05 Hosokawa Alpine Ag Verfahren zum Trennen und kontinuierlichen Austragen von schwer dispergierbaren Bestandteilen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 9438, Derwent World Patents Index; Class P41, AN 1994-309829, XP000243603 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100807710B1 (ko) * 2005-08-18 2008-02-28 와커 헤미 아게 실리콘 분쇄 방법 및 장치
EP1754539A1 (fr) * 2005-08-18 2007-02-21 Wacker Chemie AG Broyeur à jet à lit fluidisé et procédé de fragmentation de silicium
US7490785B2 (en) 2005-08-18 2009-02-17 Wacker Chemie Ag Process and apparatus for comminuting silicon
CN100464906C (zh) * 2005-09-15 2009-03-04 自贡硬质合金有限责任公司 采用气流粉碎、分级生产碳化钨粉的方法
DE102006017472A1 (de) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
CN101421044B (zh) * 2006-04-13 2012-11-28 罗兰·尼德 采用一种喷射式碾磨机生产最细颗粒的方法
US8177149B2 (en) 2006-04-13 2012-05-15 Roland Nied Method for the production of very fine particles by means of a jet mill
US8047458B2 (en) 2006-05-17 2011-11-01 Roland Nied Method for producing very fine particles by means of a jet mill
WO2008046403A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
US8074907B2 (en) 2006-10-16 2011-12-13 Roland Nied Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof
US7866582B2 (en) 2006-10-16 2011-01-11 Netzsch-Condux Mahltechnik Gmbh Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof
WO2008046404A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
CN101616742B (zh) * 2006-10-16 2013-08-21 耐驰-康多克斯研磨技术有限责任公司 制造精细颗粒的方法、相关的气流粉碎机和风选器及其操作方法
EP2959975A1 (fr) * 2006-10-16 2015-12-30 Nied, Roland, Dr.-Ing. Procede de production de particules fines a l'aide d'un broyeur a jet et broyeur a jet associe

Also Published As

Publication number Publication date
US6398139B1 (en) 2002-06-04
ES2327810T3 (es) 2009-11-04
EP1080786B1 (fr) 2009-06-10
JP2001070826A (ja) 2001-03-21
JP4801832B2 (ja) 2011-10-26
DE50015655D1 (de) 2009-07-23

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