EP0250747A3 - Method of and device for air sifting - Google Patents

Method of and device for air sifting Download PDF

Info

Publication number
EP0250747A3
EP0250747A3 EP87105736A EP87105736A EP0250747A3 EP 0250747 A3 EP0250747 A3 EP 0250747A3 EP 87105736 A EP87105736 A EP 87105736A EP 87105736 A EP87105736 A EP 87105736A EP 0250747 A3 EP0250747 A3 EP 0250747A3
Authority
EP
European Patent Office
Prior art keywords
separation
coarse material
air sifting
air
reclassification
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
EP87105736A
Other languages
German (de)
Other versions
EP0250747B1 (en
EP0250747A2 (en
Inventor
Ernst W. Dr.-Ing. Hanke
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.)
CHRISTIAN PFEIFFER MASCHINENFABRIK GMBH & CO. KOMM
Original Assignee
Christian Pfeiffer Maschinenfabrik GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6303632&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0250747(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Christian Pfeiffer Maschinenfabrik GmbH and Co KG filed Critical Christian Pfeiffer Maschinenfabrik GmbH and Co KG
Priority to AT87105736T priority Critical patent/ATE82876T1/en
Publication of EP0250747A2 publication Critical patent/EP0250747A2/en
Publication of EP0250747A3 publication Critical patent/EP0250747A3/en
Application granted granted Critical
Publication of EP0250747B1 publication Critical patent/EP0250747B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Centrifugal Separators (AREA)

Abstract

The invention relates to a process and to an air classifier for the separation of classifying material into coarse material and fine material. Known air classifiers suffer from considerable deficiencies with regards to the throughput and the separation efficiency. To avoid this, the invention provides for the performance of a separate reclassification, which takes place in the same way as the pre-classification, whilst incorporating mechanical centrifugal rejection of coarse material particles, particularly through the impact ledges of a centrifuge basket.
EP87105736A 1986-06-25 1987-04-16 Method of and device for air sifting Expired - Lifetime EP0250747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105736T ATE82876T1 (en) 1986-06-25 1987-04-16 PROCESSES FOR AIRCLASSIFICATION AND AIRCLASSIFIERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863621221 DE3621221A1 (en) 1986-06-25 1986-06-25 METHOD FOR WINDPROOFING AND WINIFIFIER
DE3621221 1986-06-25

Publications (3)

Publication Number Publication Date
EP0250747A2 EP0250747A2 (en) 1988-01-07
EP0250747A3 true EP0250747A3 (en) 1989-05-24
EP0250747B1 EP0250747B1 (en) 1992-12-02

Family

ID=6303632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105736A Expired - Lifetime EP0250747B1 (en) 1986-06-25 1987-04-16 Method of and device for air sifting

Country Status (5)

Country Link
US (1) US4869786A (en)
EP (1) EP0250747B1 (en)
AT (1) ATE82876T1 (en)
DE (2) DE3621221A1 (en)
ES (1) ES2036541T3 (en)

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KR930004539B1 (en) * 1988-02-09 1993-06-01 캐논 가부시끼가이샤 Gas current classifying separator
DE3843338A1 (en) * 1988-12-22 1990-06-28 Krupp Polysius Ag SAFE
DE4002867C1 (en) * 1990-02-01 1991-08-29 Evt Energie- Und Verfahrenstechnik Gmbh, 7000 Stuttgart, De
FR2658096B1 (en) * 1990-02-13 1992-06-05 Fives Cail Babcock AIR SELECTOR WITH CENTRIFUGAL ACTION.
DE4112018A1 (en) * 1990-06-08 1991-12-12 Kloeckner Humboldt Deutz Ag SAFE
DE9015363U1 (en) * 1990-11-08 1991-01-17 Christian Pfeiffer Maschinenfabrik GmbH & Co KG, 4720 Beckum Device for material dispersion
DK167054B1 (en) * 1990-11-26 1993-08-23 Smidth & Co As F L DOUBLE SEPARATOR FOR SEPARATION OF PARTICULATE MATERIAL
DE4116683A1 (en) * 1991-05-22 1992-11-26 Nied Roland Wind sifter for separate removal of coarse and fine materials - has preliminary jet pipe and high-speed gas jet for initial dispersal of material
IT1248066B (en) * 1991-06-17 1995-01-05 Italcementi Spa DYNAMIC SEPARATOR FOR POWDERED MATERIALS, IN PARTICULAR CEMENT AND PLANT THAT INCLUDES IT
US5273163A (en) * 1992-01-23 1993-12-28 Luzenac America, Inc. Centrifugal particle classifier having uniform influx distributor
EP0645196A4 (en) * 1993-03-31 1995-10-25 Onoda Cement Co Ltd Vortex type air classifier.
AT401741B (en) * 1993-08-19 1996-11-25 Thaler Horst Dipl Ing WINDSIGHTER
US5366095A (en) * 1993-11-15 1994-11-22 Christopher Martin Air classification system
NO300257B1 (en) * 1995-04-07 1997-05-05 Sinvent As Apparatus for sorting particulate material
US6276534B1 (en) 1998-04-03 2001-08-21 Hosokawa Micron Powder Systems Classifier apparatus for particulate matter/powder classifier
DE19854855C2 (en) * 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co air classifier
US6439394B1 (en) 2000-02-17 2002-08-27 Sortech Separation Technologies, Ltd. Separator for dry separation of powders
US6739456B2 (en) 2002-06-03 2004-05-25 University Of Florida Research Foundation, Inc. Apparatus and methods for separating particles
US7028847B2 (en) * 2003-05-29 2006-04-18 Alstom Technology Ltd High efficiency two-stage dynamic classifier
EP1561519A1 (en) * 2004-02-04 2005-08-10 Magotteaux International S.A. Particle classifier
DE102004027128A1 (en) * 2004-06-03 2005-12-22 Polysius Ag Sieve assembly, to sort granular materials into at least three fractions for a mill, has a concentric array of a static and a dynamic sieve around a common axis in a common housing
US20080040980A1 (en) * 2006-07-13 2008-02-21 Unimin Corporation Method of processing nepheline syenite
US20080015104A1 (en) * 2006-07-13 2008-01-17 Unimin Corporation Ultrafine nepheline syenite
US8858699B2 (en) 2006-07-13 2014-10-14 Unimin Corporation Ultra fine nepheline syenite powder and products for using same
DE102006044833B4 (en) * 2006-09-20 2010-01-21 Babcock Borsig Service Gmbh Centrifugal separator and method for sifting
US7757976B2 (en) * 2007-02-07 2010-07-20 Unimin Corporation Method of processing nepheline syenite powder to produce an ultra-fine grain size product
WO2009008965A1 (en) * 2007-07-09 2009-01-15 Unimin Corporation Nepheline syenite powder with controlled particle size and novel method of making same
JP4785802B2 (en) * 2007-07-31 2011-10-05 株式会社日清製粉グループ本社 Powder classifier
BRPI0822390B1 (en) 2008-04-17 2018-06-26 Unimin Corporation Ultrathin powder formed from controlled particle size distribution mineral or rock material for thermal films or coatings, and their production method
CA2638150C (en) * 2008-07-24 2012-03-27 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
CA2638157C (en) * 2008-07-24 2013-05-28 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638159C (en) * 2008-07-24 2012-09-11 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
CA2638160C (en) * 2008-07-24 2015-02-17 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650913C (en) * 2009-01-23 2013-10-15 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650919C (en) * 2009-01-23 2014-04-22 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
PL2467532T3 (en) 2009-08-24 2014-11-28 Abengoa Bioenergy New Tech Llc Method for producing ethanol and co-products from cellulosic biomass
FR2976194B1 (en) 2011-06-08 2014-01-10 Pa Technologies DYNAMIC SEPARATOR FOR PULVERULENT MATERIALS
US9211547B2 (en) 2013-01-24 2015-12-15 Lp Amina Llc Classifier
JP6328229B2 (en) * 2014-03-31 2018-05-23 ホソカワミクロン株式会社 Classifier
DE102016106588B4 (en) * 2016-04-11 2023-12-14 Neuman & Esser Process Technology Gmbh Sifter
CN110961351A (en) * 2019-12-20 2020-04-07 浙江清湖建材股份有限公司 Novel heavy calcium carbonate powder production is with screening device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1757582C2 (en) * 1968-05-20 1976-03-11 The Georgia Marble Co., Atlanta, .Ga. (V.St.A.) Centrifugal basket wind sifter
DE3038625A1 (en) * 1980-10-13 1982-05-19 Fa. Christian Pfeiffer, 4720 Beckum ROTARY AIR CENTRIFUGAL SIFTER
DE3231526A1 (en) * 1982-08-25 1984-03-01 PKS-Engineering GmbH & Co KG, 4720 Beckum Improved air sifter
US4528091A (en) * 1983-01-29 1985-07-09 Alpine Aktiengesellschaft Augsburg Particle classifier

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB219647A (en) *
DE521082C (en) * 1925-11-07 1931-03-16 Hermann Hildebrandt Classifier with a classifier wheel upstream of a blower
US1746686A (en) * 1928-06-23 1930-02-11 Sturtevant Mill Co Air separator
GB359763A (en) * 1930-11-24 1931-10-29 Nikolai Ahlmann Improvements in and relating to the separation of pulverulent materials
DE695328C (en) * 1938-09-09 1940-08-22 Carl Fleck Device for the separation of solid and liquid components from gases or vapors with the help of centrifugal force and a cavitation generated by circulating flow
DE1507729A1 (en) * 1966-07-05 1970-01-08 Polysius Ag Air separator
SU751450A1 (en) * 1976-03-09 1980-07-30 Белорусский технологический институт им. С.М.Кирова Centrifugal pneumatic classifier
DE2715955A1 (en) * 1977-04-09 1978-10-12 Wessel Josef Two stage corn sifting installation - uses two centrifugal force sifters connected by supply pipe and with collecting chambers for fine sifted material
FR2460725A1 (en) * 1979-07-02 1981-01-30 Kawasaki Heavy Ind Ltd Dispenser with swirling air currents - produces strong eddy to increase separating degree of pulverised particles
US4296864A (en) * 1979-07-17 1981-10-27 Onoda Cement Co., Ltd. Air classifier
DE2951819C2 (en) * 1979-12-21 1982-09-16 Omya GmbH, 5000 Köln Centrifugal separator
EP0067895B1 (en) * 1981-06-19 1985-01-30 OMYA GmbH Centrifugal sifter
US4409097A (en) * 1981-10-16 1983-10-11 Omya Gmbh Improved pivotable centrifugal classifier and method of classifying
DE3222878C1 (en) * 1982-06-18 1983-12-22 PKS-Engineering GmbH & Co KG, 4720 Beckum Method for operating an air classifier and wind classifier for carrying out the method
SU1238816A2 (en) * 1983-09-14 1986-06-23 Всесоюзный Научно-Исследовательский Институт Комбикормовой Промышленности Inertial separator
US4551241A (en) * 1984-02-08 1985-11-05 Sturtevant, Inc. Particle classifier
DE3515026C1 (en) * 1985-04-25 1986-09-18 Fa. Christian Pfeiffer, 4720 Beckum Rotary air centrifuge classifier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1757582C2 (en) * 1968-05-20 1976-03-11 The Georgia Marble Co., Atlanta, .Ga. (V.St.A.) Centrifugal basket wind sifter
DE3038625A1 (en) * 1980-10-13 1982-05-19 Fa. Christian Pfeiffer, 4720 Beckum ROTARY AIR CENTRIFUGAL SIFTER
DE3231526A1 (en) * 1982-08-25 1984-03-01 PKS-Engineering GmbH & Co KG, 4720 Beckum Improved air sifter
US4528091A (en) * 1983-01-29 1985-07-09 Alpine Aktiengesellschaft Augsburg Particle classifier

Also Published As

Publication number Publication date
EP0250747B1 (en) 1992-12-02
ES2036541T3 (en) 1993-06-01
DE3621221C2 (en) 1988-09-22
DE3782859D1 (en) 1993-01-14
EP0250747A2 (en) 1988-01-07
US4869786A (en) 1989-09-26
ATE82876T1 (en) 1992-12-15
DE3621221A1 (en) 1988-01-14

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