EP0352642A2 - Procédé de dispersion, de broyage ou de désagglomération et de triage de solides - Google Patents

Procédé de dispersion, de broyage ou de désagglomération et de triage de solides Download PDF

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Publication number
EP0352642A2
EP0352642A2 EP89113382A EP89113382A EP0352642A2 EP 0352642 A2 EP0352642 A2 EP 0352642A2 EP 89113382 A EP89113382 A EP 89113382A EP 89113382 A EP89113382 A EP 89113382A EP 0352642 A2 EP0352642 A2 EP 0352642A2
Authority
EP
European Patent Office
Prior art keywords
classifier
jet mill
solids
dispersion
gas
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Withdrawn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
EP89113382A
Other languages
German (de)
English (en)
Other versions
EP0352642A3 (fr
Inventor
Helmut Dr. Hoch
Reinhard Dr. Polke
Norbert Scholz
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of EP0352642A2 publication Critical patent/EP0352642A2/fr
Publication of EP0352642A3 publication Critical patent/EP0352642A3/fr
Withdrawn legal-status Critical Current

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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
    • 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 relates to a process for dispersing, comminuting or deagglomeration and classifying solids and a classifier jet mill for carrying out the above process measures.
  • the selection of the processes or equipment to be used is based on various criteria, for example the particle size and nature of the solids.
  • a classifier mill is described in the brochure 23 / 1d of the company Alpine AG, Augsburg, in which the combined grinding and classifying of the raw products or end products is achieved by means of a machine unit.
  • the product feed 1 takes place via the product feed 2 via injector gas 3 into the dispersion chamber 4, which is delimited by the cover 5, grinding ring 6 and base plate 7.
  • the grinding gas 8 at the same time also sight gas, is fed into the dispersion chamber via a distribution chamber 9 and nozzles 10 arranged in the grinding ring, and there - depending on the form, gas quantity and nozzle geometry - ensures the targeted solids stress, residence time and separation limit.
  • the residence time and separation limit can also be varied within wide limits by supplying secondary gas 11 - which is divided by the cone 12 and flows through the concentric gap 13.
  • Coarse or hard-to-disperse solid 14 leaves the dispersion chamber through the gap and is separated in the collecting container 15.
  • the fine material or the easily dispersible solid 16 leaves the dispersion chamber together with the exhaust air stream via the fine material exhaust air outlet 18. Fine material and exhaust air are separated in known separator systems connected downstream.
  • the classifying jet mill according to the invention can be used to specifically influence the solids residence time and stress by supplying an adjustable secondary gas flow possible through the gap.
  • the secondary gas flow changes the likelihood of passage into the collecting container and shifts the separation limit within the dispersion room to coarser values.
  • the coarse or difficult to disperse portions can be continuously drawn off through the concentric gap of variable width into the collecting container.
  • this collecting container can be replaced by a cone with a suitable discharge element, for example a rotary valve. This means that the size reduction and separation results can be influenced within wide limits by varying the grinding gas pressure, the grinding gas volume flow through the grinding ring and various nozzle geometries, round to gap, as well as by supplying more or less secondary gas.
  • classifier jet mill according to the invention is not limited to the features and construction described above, but can be varied within the scope of procedural and structural details.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP19890113382 1988-07-27 1989-07-21 Procédé de dispersion, de broyage ou de désagglomération et de triage de solides Withdrawn EP0352642A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825469A DE3825469A1 (de) 1988-07-27 1988-07-27 Verfahren zur dispergierung, zerkleinerung bzw. desagglomeration und sichtung von feststoffen
DE3825469 1988-07-27

Publications (2)

Publication Number Publication Date
EP0352642A2 true EP0352642A2 (fr) 1990-01-31
EP0352642A3 EP0352642A3 (fr) 1991-01-16

Family

ID=6359643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890113382 Withdrawn EP0352642A3 (fr) 1988-07-27 1989-07-21 Procédé de dispersion, de broyage ou de désagglomération et de triage de solides

Country Status (4)

Country Link
US (1) US4979684A (fr)
EP (1) EP0352642A3 (fr)
JP (1) JPH0275357A (fr)
DE (1) DE3825469A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431534B4 (de) * 1994-02-10 2006-12-28 Nied, Roland, Dr. Ing. Maschine zur Einwirkung auf zerkleinerbares und klassierbares Rohgut, sowie Verfahren zum Betrieb der Maschine
DE19718668C2 (de) * 1997-05-02 2003-04-03 Hosokawa Alpine Ag & Co Verfahren zum Trennen und kontinuierlichen Austragen von schwer dispergierbaren Bestandteilen
US6395247B1 (en) * 1997-12-12 2002-05-28 Degussa Ag Precipitated silica
US20040121003A1 (en) * 2002-12-19 2004-06-24 Acusphere, Inc. Methods for making pharmaceutical formulations comprising deagglomerated microparticles
US7445806B2 (en) * 2004-09-02 2008-11-04 Kraft Foods Global Brands Llc Process for selective grinding and recovery of dual-density foods
DE102005023950B4 (de) 2005-05-20 2007-08-02 Omya Gmbh Anlage zur Herstellung disperser mineralischer Produkte
DE102006001937A1 (de) * 2006-01-14 2007-09-27 Lehigh Technologies, LLC, Naples Trennen von Mineralien
DE102006017472A1 (de) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
DE102006023193A1 (de) 2006-05-17 2007-11-22 Nied, Roland, Dr.-Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
US8067051B2 (en) * 2006-06-19 2011-11-29 Kraft Foods R & D, Inc. Process for milling cocoa shells
CN114733601B (zh) * 2022-03-25 2023-03-03 河南省中医药研究院 一种高血压治疗用中医护理粉碎装置及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965104C (de) * 1955-03-03 1957-05-29 Alpine Ag Maschinenfabrik Und Strahlmuehle mit flacher runder Mahlkammer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462086A (en) * 1966-07-01 1969-08-19 Du Pont Fluid energy milling process
US3726484A (en) * 1971-10-15 1973-04-10 Du Pont Stepped fluid energy mill
US3951347A (en) * 1972-09-21 1976-04-20 Polysius Ag Apparatus for crushing material containing particles that are hard to pulverize
US4019688A (en) * 1975-06-02 1977-04-26 Viktor Ivanovich Akunov Device for treating loose materials
DE3338138C2 (de) * 1983-10-20 1986-01-16 Alpine Ag, 8900 Augsburg Fließbett-Gegenstrahlmühle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965104C (de) * 1955-03-03 1957-05-29 Alpine Ag Maschinenfabrik Und Strahlmuehle mit flacher runder Mahlkammer

Also Published As

Publication number Publication date
DE3825469A1 (de) 1990-02-01
EP0352642A3 (fr) 1991-01-16
US4979684A (en) 1990-12-25
JPH0275357A (ja) 1990-03-15

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