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EP3307440A1 - Procédé de fragmentation d'un produit à broyer et broyeur associé - Google Patents

Procédé de fragmentation d'un produit à broyer et broyeur associé

Info

Publication number
EP3307440A1
EP3307440A1 EP16742153.6A EP16742153A EP3307440A1 EP 3307440 A1 EP3307440 A1 EP 3307440A1 EP 16742153 A EP16742153 A EP 16742153A EP 3307440 A1 EP3307440 A1 EP 3307440A1
Authority
EP
European Patent Office
Prior art keywords
mill
grinding
ground
gas
particles
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.)
Pending
Application number
EP16742153.6A
Other languages
German (de)
English (en)
Inventor
Roland Nied
Hermann Sickel
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.)
Dynasystems GmbH
Netzsch Trockenmahltechnik GmbH
Original Assignee
Netzsch Trockenmahltechnik 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 Netzsch Trockenmahltechnik GmbH filed Critical Netzsch Trockenmahltechnik GmbH
Publication of EP3307440A1 publication Critical patent/EP3307440A1/fr
Pending legal-status Critical Current

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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
    • B02C17/1885—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone the applied gas acting to effect material separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground 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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • 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
    • 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
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through 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
    • 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 present invention relates to a method for comminuting regrind with a
  • Grinded material with a mill and a mill to obtain milled particles without oxygen contamination or at least milled particles with a lower oxygen contamination than when milled in a protective gas atmosphere.
  • the invention provides a method for comminuting regrind with a mill, which contains a grinding chamber, which is supplied with a Mahlgutzuschreib and a derivation for ge
  • CONFIRMATION COPY contains grinded particles and contains milling devices for producing particles of desired fineness from the supplied millbase, it being provided according to the invention that the grinding takes place in a reducing atmosphere containing a reducing gas.
  • a reduction reaction gas is passed to or present in the grinding chamber for the reduction reaction between the particles produced and the reduction reaction gas and, when the ground material and particles break therefrom, reacts with the latter in a reducing manner.
  • the invention thus provides a combination of milling and simultaneous reduction reaction, or in other words a reducing comminution.
  • the operating parameters of the mill such as throughput and residence time in the grinding chamber, discharge, etc., are suitably set or controlled.
  • the invention also provides a mill with a grinding chamber, which is connected to a Mahlgutzu- drove and a derivative of ground particles and contains grinders for generating particles of desired fineness from the supplied millbase, which is inventively provided that in the grinding chamber, a reducing atmosphere is contained, in which the grinding takes place and which contains a reducing gas.
  • the operating parameters of the mill such as throughput and residence time in the grinding chamber, discharge, etc., are suitably adjusted or controlled.
  • Reducing gas also be understood as a reduction reaction gas.
  • the reducing gas has the effect of binding it when it encounters oxygen.
  • hydrogen (H 2 ) as a reducing gas, the following reaction takes place:
  • the grinding takes place in a reducing atmosphere.
  • a reducing gas is present in the grinding chamber or a reducing gas is fed into the grinding chamber, which in the preferred case of a jet mill is at the same time the grinding gas.
  • This method is thus a combination of grinding and simultaneous reduction reaction, or in other words a reducing comminution.
  • the operating parameters of the mill such as throughput and residence time in the grinding chamber, discharge, etc., are suitably set or controlled.
  • a mill is used with a grinding chamber, which is connected to a Mahlgutzuschreib and a discharge for ground particles and contains milling devices for producing particles of desired fineness from the supplied millbase, which is provided according to the invention, in that the grinding chamber contains a reducing atmosphere in which the grinding takes place and which contains a reducing gas.
  • the operating parameters of the mill such as throughput and residence time in the grinding chamber, discharge, etc. are set or controlled by a device according to the device.
  • the mill is designed so that the degree of fineness of the grinding d 50 ⁇ 1 ⁇ is.
  • the operating parameters of the mill such as throughput and residence time in the grinding chamber, discharge, etc. suitably set or control.
  • the reducing gas is hydrogen (H 2 ) or carbon monoxide (CO) or a mixture thereof.
  • a further preferred embodiment is that return means are provided by the discharge for ground particles for Mahlgutzuschreib, so that at least once ground particles in at least one passage, preferably several passages through the mill further ground.
  • an air classifier is integrated.
  • the mill is an in particular continuously operated dry stirred mill.
  • the mill is preferably a jet mill which contains nozzle-like inlet gas for grinding gas in order to guide grinding gas jets into the interior of the grinding chamber for producing particles of desired fineness from the supplied grinding stock for jet milling, and the milling gas contains the same Reducing gas or, as the grinding gas, the reducing gas needed for the reduction reaction to which the milled particles are to be subjected is used.
  • reducing gas can also be understood as a reducing reaction gas.
  • the reducing gas has the effect of binding it when it encounters oxygen.
  • hydrogen (H 2 ) as the reducing gas, the following reaction takes place:
  • high-purity metals Al, Si and the like Due to the reducing atmosphere in the grinding chamber or procedurally as the environment of grinding, for example, high-purity metals Al, Si and the like can be protected against oxidation in particular. Passivation by oxidation at the surface of the particles, in particular in the fracture zones, is avoided. The reactivity of the high purity metals is retained.
  • the exit velocity of the ground gas is decisive for the achievable final velocity of regrind and particles therefrom and thus for fine comminution, ie for a final fineness of the ground particles of ⁇ 5 ⁇ m - 10 ⁇ m and is given by:
  • the jet velocity (adiabatic sound velocity) with hydrogen is about 3.7 times compared to nitrogen.
  • the kinetic energy of the particles at collision when comparing hydrogen and nitrogen is about 13.6 times as large, which is a significant advantage for the Feinstzerkleintation.

Landscapes

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

Abstract

L'invention concerne un procédé de fragmentation d'un produit à broyer au moyen d'un broyeur qui comprend une chambre de broyage qui est raccordée à une amenée de produit à broyer et à une conduite d'évacuation des particules broyées, et des dispositifs de broyage servant à produire des particules de la finesse souhaitée à partir du produit à broyer, le broyage s'effectuant sous une atmosphère réductrice qui contient un gaz de réduction. L'invention concerne par ailleurs un broyeur muni d'une chambre de broyage qui est raccordée à une amenée de produit à broyer et à une conduite d'évacuation des particules broyées, et des dispositifs de broyage servant à produire des particules de la finesse souhaitée à partir du produit à broyer, la chambre de broyage contenant une atmosphère réductrice sous laquelle le broyage est effectué et qui contient un gaz de réduction.
EP16742153.6A 2015-06-15 2016-06-14 Procédé de fragmentation d'un produit à broyer et broyeur associé Pending EP3307440A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202015004167 2015-06-15
PCT/DE2016/000247 WO2016202320A1 (fr) 2015-06-15 2016-06-14 Procédé de fragmentation d'un produit à broyer et broyeur associé

Publications (1)

Publication Number Publication Date
EP3307440A1 true EP3307440A1 (fr) 2018-04-18

Family

ID=56549990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16742153.6A Pending EP3307440A1 (fr) 2015-06-15 2016-06-14 Procédé de fragmentation d'un produit à broyer et broyeur associé

Country Status (4)

Country Link
US (1) US11376604B2 (fr)
EP (1) EP3307440A1 (fr)
CN (1) CN107810065A (fr)
WO (1) WO2016202320A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102149323B1 (ko) 2016-11-07 2020-08-31 와커 헤미 아게 실리콘을 함유하는 고형물을 분쇄하는 방법
DE102018120596A1 (de) * 2018-08-23 2020-02-27 Netzsch Trockenmahltechnik Gmbh Verfahren und Vorrichtung zur Ausschleusung schwer mahlbarer Partikel aus einer Spiralstrahlmühle

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932166A (en) * 1986-05-30 1990-06-12 The Carborundum Company Inert autogenous attrition grinding
CN2341714Y (zh) * 1998-04-30 1999-10-06 李征宇 一种超细立式搅拌高能球磨机
AT406262B (de) * 1998-06-29 2000-03-27 Holderbank Financ Glarus Verfahren und vorrichtung zum granulieren und zerkleinern von flüssigen schlacken
CN1211164C (zh) * 2000-05-10 2005-07-20 斯凯伊药品加拿大公司 介质研磨
GB0219112D0 (en) * 2002-08-16 2002-09-25 Johnson Matthey Plc Reactive milling process
DE10257498A1 (de) * 2002-12-10 2004-07-01 Clariant Gmbh Verfahren zur Herstellung von Phthalocyaninpigmentzubereitungen
SK286010B6 (sk) * 2004-03-08 2008-01-07 Ivan Ma�Ar Spôsob spracovania viaczložkových, kompozitných akombinovaných materiálov tvorených prevažne odpadmi elektronických a elektrických zariadení a použitie takto oddelených zložiek
DE102006017472A1 (de) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
JP4830648B2 (ja) * 2006-06-09 2011-12-07 富士ゼロックス株式会社 電子写真用トナー及び画像形成装置
DE102006048864A1 (de) 2006-10-16 2008-04-17 Roland Dr. Nied Verfahren zur Erzeugung feinster Partikel und Strahlmühle dafür sowie Windsichter und Betriebsverfahren davon
DE102007054843B4 (de) * 2007-11-16 2012-04-12 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH Wasserstoff speichernde Kompositmaterialien
US9139791B2 (en) * 2008-02-13 2015-09-22 Hydrocoal Technologies, Llc Processing device for improved utilization of fuel solids
DE102011102614A1 (de) * 2011-05-27 2012-11-29 Roland Nied Verfahren zum Betrieb einer Strahlmühle sowie Strahlmühle
CN203663981U (zh) * 2013-12-18 2014-06-25 兴化市恒威生物技术有限公司 一种制备氟苯尼考粉用多重粉碎机
CN103978221B (zh) * 2014-06-04 2015-12-30 中国科学院合肥物质科学研究院 一种氧化物弥散强化合金粉体的制备方法

Also Published As

Publication number Publication date
US11376604B2 (en) 2022-07-05
CN107810065A (zh) 2018-03-16
US20180214884A1 (en) 2018-08-02
WO2016202320A1 (fr) 2016-12-22
WO2016202320A8 (fr) 2018-03-29

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