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EP0362525A3 - Cold-grinding method and apparatus - Google Patents

Cold-grinding method and apparatus Download PDF

Info

Publication number
EP0362525A3
EP0362525A3 EP19890115154 EP89115154A EP0362525A3 EP 0362525 A3 EP0362525 A3 EP 0362525A3 EP 19890115154 EP19890115154 EP 19890115154 EP 89115154 A EP89115154 A EP 89115154A EP 0362525 A3 EP0362525 A3 EP 0362525A3
Authority
EP
European Patent Office
Prior art keywords
refrigerant
mill
fluidized
cooled
consumption
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
EP19890115154
Other languages
German (de)
French (fr)
Other versions
EP0362525B1 (en
EP0362525A2 (en
Inventor
Klaus Bochmann
Hans Joachim Risto
Wolfgang Volker
Helmut Gursky
Dieter Steidl
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim 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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Priority to AT89115154T priority Critical patent/ATE103208T1/en
Publication of EP0362525A2 publication Critical patent/EP0362525A2/en
Publication of EP0362525A3 publication Critical patent/EP0362525A3/en
Application granted granted Critical
Publication of EP0362525B1 publication Critical patent/EP0362525B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/37—Cryogenic cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

Fluidized-bed counter-jet mills are gas-jet mills with which extremely fine milling results can be produced with very little wear and tear. An improvement in the milling results can be achieved by cooling the gas jets with a refrigerant, but the improvement that can be achieved is not substantial and the consumption of refrigerant is very high. In order to lower the consumption of refrigerant while considerably improving the fineness of the milled material, the coarse material which is separated by the grader of the mill is cooled by the refrigerant within the fluidized-bed counter-jet mill and fed back into the milling chamber. Liquid nitrogen is the preferred refrigerant with which the sump of the mill is cooled.
EP89115154A 1988-10-05 1989-08-17 Cold-grinding method and apparatus Expired - Lifetime EP0362525B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115154T ATE103208T1 (en) 1988-10-05 1989-08-17 METHOD AND DEVICE FOR COLD GRINDING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833830 1988-10-05
DE3833830A DE3833830A1 (en) 1988-10-05 1988-10-05 METHOD AND DEVICE FOR COLD GRINDING

Publications (3)

Publication Number Publication Date
EP0362525A2 EP0362525A2 (en) 1990-04-11
EP0362525A3 true EP0362525A3 (en) 1991-01-16
EP0362525B1 EP0362525B1 (en) 1994-03-23

Family

ID=6364406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115154A Expired - Lifetime EP0362525B1 (en) 1988-10-05 1989-08-17 Cold-grinding method and apparatus

Country Status (7)

Country Link
US (1) US4962893A (en)
EP (1) EP0362525B1 (en)
JP (1) JPH02227148A (en)
AT (1) ATE103208T1 (en)
DE (2) DE3833830A1 (en)
ES (1) ES2052845T3 (en)
ZA (1) ZA897535B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844457A1 (en) * 1988-12-31 1990-07-12 Hoechst Ag FINE-GRINED POLYETHERKETONE POWDER, METHOD FOR THE PRODUCTION AND USE THEREOF
US5247052A (en) * 1988-12-31 1993-09-21 Hoechst Aktiengesellschaft Fine-grained polyether-ketone powder, process for the manufacture thereof, and the use thereof
DE4220014A1 (en) * 1992-06-19 1993-12-23 Messer Griesheim Gmbh Process for fine grinding in apparatus with grinding media
DE19533078A1 (en) * 1995-09-07 1997-03-13 Messer Griesheim Gmbh Method and device for grinding and classifying regrind
DE10059442A1 (en) 2000-11-30 2002-06-13 Messer Griesheim Gmbh Device and method for producing fine material from chemically active regrind
AU2002319096B2 (en) 2001-07-05 2005-08-18 Kerr-Mcgee Pigments International Gmbh Method for directly cooling fine-particle solid substances
JP4287173B2 (en) * 2003-03-18 2009-07-01 株式会社リコー Counter jet mill type pulverizer
DE10351174B4 (en) * 2003-05-05 2005-11-24 Zeiss, Karl Reinhard, Dipl.-Ing. Method and device for separating mixtures of substances
CA2614409C (en) * 2005-07-07 2014-05-20 Nanotherapeutics, Inc Process for milling and preparing powders and compositions produced thereby
FI120625B (en) * 2005-08-17 2009-12-31 Valtion Teknillinen Starch-based filler and coating pigment composition for fiber webs and process for making them
US20110297586A1 (en) * 2010-04-28 2011-12-08 Jean-Francois Leon Process for Separating Bitumen from Other Constituents in Mined, Bitumen Rich, Ore
CA2703082A1 (en) 2010-05-10 2011-11-10 Gary J. Bakken Method of bonding poly-crystalline diamonds to carbide surfaces
DE102011014643A1 (en) * 2011-03-21 2012-09-27 Roland Nied Operating procedure for a jet mill plant and jet mill plant
WO2014127206A2 (en) * 2013-02-15 2014-08-21 Ohio State Innovation Foundation Processing of harvested plant materials for extraction of biopolymers and related materials and methods
JP6283204B2 (en) * 2013-11-11 2018-02-21 大阪瓦斯株式会社 Micronizer
CN105928756A (en) * 2016-04-23 2016-09-07 陈传海 Novel riffle divider for material division
FR3072307B1 (en) * 2017-10-12 2019-11-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives CRYOGENIC MILLING DEVICE AND METHOD WITH CONFLUENT JETS
CN109806531B (en) * 2019-01-30 2020-04-24 河南理工大学 Low-carbon gas hydrate crushing explosion suppression device
DE102020006008B3 (en) * 2020-10-01 2022-03-31 Hosokawa Alpine Aktiengesellschaft Fluidized bed opposed jet mill for the production of finest particles from feed material of low bulk density and method therefor
CA3161043A1 (en) 2022-02-18 2023-08-18 Gary J. Bakken Method of installing cutters on a drill bit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897010A (en) * 1971-07-02 1975-07-29 Linde Ag Method of and apparatus for the milling of granular materials
EP0135244A2 (en) * 1983-08-24 1985-03-27 JAMES HOWDEN & COMPANY LIMITED Pulveriser
EP0139279A2 (en) * 1983-10-20 1985-05-02 Alpine Aktiengesellschaft Fluidised bed-counter jet mill
WO1986005717A1 (en) * 1985-04-03 1986-10-09 Magyar Aluminiumipari Tröszt An air-jet mill for fine and/or cryogenic milling and surface treatment of preferably hard, elastic and/or thermoplastic materials

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186648A (en) * 1963-05-27 1965-06-01 Grace W R & Co Fluid energy mill
DE2133019A1 (en) * 1971-07-02 1973-01-18 Linde Ag METHOD AND DEVICE FOR COLD JET MILLING
ES413641A1 (en) * 1972-04-13 1976-06-16 Union Carbide Corp A procedure for crushing plastic and elastomeral materials. (Machine-translation by Google Translate, not legally binding)
DE2253516C2 (en) * 1972-10-28 1985-09-26 Fa. E. Kampffmeyer, 2000 Hamburg Process for the production of powder from fat or fat-like substances with or without carrier substances
GB2044126B (en) * 1979-03-15 1983-04-20 Air Prod & Chem Method and apparatus for cryogenic grinding
JPS62273062A (en) * 1986-05-20 1987-11-27 株式会社　栗本鉄工所 Air-current type crusher for low-temperature crushing
JPS62273061A (en) * 1986-05-20 1987-11-27 株式会社　栗本鉄工所 Air-current type crusher for low-temperature crushing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897010A (en) * 1971-07-02 1975-07-29 Linde Ag Method of and apparatus for the milling of granular materials
EP0135244A2 (en) * 1983-08-24 1985-03-27 JAMES HOWDEN & COMPANY LIMITED Pulveriser
EP0139279A2 (en) * 1983-10-20 1985-05-02 Alpine Aktiengesellschaft Fluidised bed-counter jet mill
WO1986005717A1 (en) * 1985-04-03 1986-10-09 Magyar Aluminiumipari Tröszt An air-jet mill for fine and/or cryogenic milling and surface treatment of preferably hard, elastic and/or thermoplastic materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Woche 8431, 12. September 1984, Sektion J/M, Klasse J02/M22, Nr. 84-194530/31, Derwent Publications Ltd, London, GB; & SU-A-1 060 199 (UKR SPEC. STEELFERR) 15-12-1983 *

Also Published As

Publication number Publication date
DE58907281D1 (en) 1994-04-28
EP0362525B1 (en) 1994-03-23
EP0362525A2 (en) 1990-04-11
JPH02227148A (en) 1990-09-10
US4962893A (en) 1990-10-16
ATE103208T1 (en) 1994-04-15
ZA897535B (en) 1990-06-27
DE3833830C2 (en) 1991-11-07
DE3833830A1 (en) 1990-04-12
ES2052845T3 (en) 1994-07-16

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