DE69214629D1 - METHOD AND DEVICE FOR CLASSIFYING A FLOW OF A GAS SOLID COMPOSITION FROM A COUNTERMILL - Google Patents

METHOD AND DEVICE FOR CLASSIFYING A FLOW OF A GAS SOLID COMPOSITION FROM A COUNTERMILL

Info

Publication number
DE69214629D1
DE69214629D1 DE69214629T DE69214629T DE69214629D1 DE 69214629 D1 DE69214629 D1 DE 69214629D1 DE 69214629 T DE69214629 T DE 69214629T DE 69214629 T DE69214629 T DE 69214629T DE 69214629 D1 DE69214629 D1 DE 69214629D1
Authority
DE
Germany
Prior art keywords
flow
led
classifying
gas
gas flow
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.)
Expired - Lifetime
Application number
DE69214629T
Other languages
German (de)
Inventor
Jouko Niemi
Tuomo Kauramaeki
Jukka Lehtimaeki
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.)
MIKROPULVA LTD. OY, PIRKKALA, FI
Original Assignee
Finnpulva Oy AB
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 Finnpulva Oy AB filed Critical Finnpulva Oy AB
Application granted granted Critical
Publication of DE69214629D1 publication Critical patent/DE69214629D1/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
    • 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
    • B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to 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
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Catalysts (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The invention relates to a method and an equipment for classifying a gas-solids flow coming from a counterjet pulverizer (5), in which the gas-solids flow accelerated by an additional gas flow is led to a first, mainly a centrifugal-force based classification phase (7), from which a coarse fraction is returned to the pulverization and a fine fraction is led, supported by the gas flow, to a second classification phase. The invention is characterized in that the coarse fraction produced in the second classification phase (12) is mixed in a vigorous additional gas flow and the additional gas-solids mixture produced is led to the feed of the first classification phase (7) such that large speed differences occur therein, and the fine fraction is led, supported by the gas flow, to the next treatment phase.
DE69214629T 1991-01-29 1992-01-29 METHOD AND DEVICE FOR CLASSIFYING A FLOW OF A GAS SOLID COMPOSITION FROM A COUNTERMILL Expired - Lifetime DE69214629D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI910418A FI910418A (en) 1991-01-29 1991-01-29 FOERFARANDE OCH ANLAEGGNING FOER KLASSIFICERING AV GAS-FASTSUBSTANSSTROEMMEN FRAON EN MOTSTRAOLSKVARN.
PCT/FI1992/000023 WO1992012795A1 (en) 1991-01-29 1992-01-29 A method and an equipment for classifying a gas-solids flow coming from a counterjet pulverizer

Publications (1)

Publication Number Publication Date
DE69214629D1 true DE69214629D1 (en) 1996-11-21

Family

ID=8531806

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69214629T Expired - Lifetime DE69214629D1 (en) 1991-01-29 1992-01-29 METHOD AND DEVICE FOR CLASSIFYING A FLOW OF A GAS SOLID COMPOSITION FROM A COUNTERMILL

Country Status (7)

Country Link
EP (1) EP0569420B1 (en)
JP (1) JPH06507111A (en)
AT (1) ATE144165T1 (en)
AU (1) AU1183392A (en)
DE (1) DE69214629D1 (en)
FI (1) FI910418A (en)
WO (1) WO1992012795A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9819398D0 (en) 1998-09-04 1998-10-28 Garfield Int Invest Ltd Pulveriser and method of pulverising
US6517015B2 (en) * 2000-03-21 2003-02-11 Frank F. Rowley, Jr. Two-stage comminuting and dehydrating system and method
US7059550B2 (en) 2001-02-26 2006-06-13 Power Technologies Investment Ltd. System and method for pulverizing and extracting moisture
US7040557B2 (en) 2001-02-26 2006-05-09 Power Technologies Investment Ltd. System and method for pulverizing and extracting moisture
US7429008B2 (en) 2001-02-26 2008-09-30 Power Technologies Investment Ltd. System and method for pulverizing and extracting moisture
GB0326233D0 (en) * 2003-11-11 2003-12-17 Power Technologies Invest Ltd System and method for pulverising and extracting mositure
US8057739B2 (en) 2003-11-12 2011-11-15 Pulverdryer Usa, Inc. Liquid purification system
AU2011253160A1 (en) 2010-05-10 2012-11-15 Pulverdryer Usa, Inc. Eggshell membrane separation process
US9180463B1 (en) * 2014-08-29 2015-11-10 Joseph R. Fitzgerald Method for fractionation of dry material using accelerators
CN104896496B (en) * 2015-05-22 2017-07-11 东方电气集团东方锅炉股份有限公司 Adjust the device and method of each tube cell powder amount deviation of unit pulverized-coal system
CN111318356A (en) * 2020-04-09 2020-06-23 文山市华信三七科技有限公司 Panax notoginseng medicinal material crushing system and use method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001906A1 (en) * 1986-09-10 1988-03-24 Larox Oy Method and equipment for the production of particularly finely divided dry powders
FI84032C (en) * 1988-11-28 1991-10-10 Finnpulva Ab Oy Procedure and plant for the classification of extremely finely divided material

Also Published As

Publication number Publication date
WO1992012795A1 (en) 1992-08-06
FI910418A (en) 1992-07-30
EP0569420A1 (en) 1993-11-18
JPH06507111A (en) 1994-08-11
ATE144165T1 (en) 1996-11-15
AU1183392A (en) 1992-08-27
EP0569420B1 (en) 1996-10-16
FI910418A0 (en) 1991-01-29

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: MIKROPULVA LTD. OY, PIRKKALA, FI

8332 No legal effect for de