ZA884970B - Method of producing fine particles - Google Patents

Method of producing fine particles

Info

Publication number
ZA884970B
ZA884970B ZA884970A ZA884970A ZA884970B ZA 884970 B ZA884970 B ZA 884970B ZA 884970 A ZA884970 A ZA 884970A ZA 884970 A ZA884970 A ZA 884970A ZA 884970 B ZA884970 B ZA 884970B
Authority
ZA
South Africa
Prior art keywords
particle size
particles
classification device
fine
fraction
Prior art date
Application number
ZA884970A
Inventor
Herbert Frank Askew
Stephen Clifford Brown
Original Assignee
Alcan Int Ltd
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 Alcan Int Ltd filed Critical Alcan Int Ltd
Publication of ZA884970B publication Critical patent/ZA884970B/en

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
    • 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
    • B02C23/36—Adding fluid, other than for crushing or disintegrating by fluid energy the crushing or disintegrating zone being submerged in liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the 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
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Glanulating (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Cyclones (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

This invention relates to a method of reducing the particle size of solid particles and is applicable to the production of very fine particles of a wide variety of solids, includuing relatively hard solids. The method comprises milling a liquid suspension of solid particles in an agitated media mill (13), pumping the milled suspension through a particle size classification device (16) to separate the slurry into a coarse fraction (17) and a fine fraction (18), the particles of the coarse fraction having a greater median particle size than the particles of the fine fraction, recycling the coarse fraction (17) from the particle size classification device to the input of the mill (13), and recycling the fine fraction (18) by pumping (15) it to the classification device, wherein recycling of both coarse and fine fractions are continued until solid particles of the desired reduced particle size are produced. Preferably a single classification device and a single mill can be used, and particles having a median particle size of 0.3 microns or less and a relatively narrow particle size distribution can be produced, even using a hydrocyclone as the classification device.
ZA884970A 1987-07-09 1988-07-11 Method of producing fine particles ZA884970B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878716213A GB8716213D0 (en) 1987-07-09 1987-07-09 Producing fine particles

Publications (1)

Publication Number Publication Date
ZA884970B true ZA884970B (en) 1989-03-29

Family

ID=10620393

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA884970A ZA884970B (en) 1987-07-09 1988-07-11 Method of producing fine particles

Country Status (12)

Country Link
EP (1) EP0298777B1 (en)
JP (1) JPH01104354A (en)
AT (1) ATE77974T1 (en)
AU (1) AU605886B2 (en)
BR (1) BR8803484A (en)
CA (1) CA1323015C (en)
DE (1) DE3872610T2 (en)
GB (1) GB8716213D0 (en)
IE (1) IE61937B1 (en)
IN (1) IN171515B (en)
NO (1) NO174282C (en)
ZA (1) ZA884970B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2579984B2 (en) * 1988-01-28 1997-02-12 株式会社クボタ Method for producing granular material and apparatus for producing the same
US5171631A (en) * 1990-07-19 1992-12-15 Aluminum Company Of America Spacer/extender for titanium dioxide in pigment systems for coatings
ATE403497T1 (en) * 2003-06-17 2008-08-15 Xuning Wang A MILL FOR CRUSHING AND GRINDING, A DEVICE FOR PRODUCING SOYBEAN MILK USING THE MILL AND A METHOD FOR PRODUCING SOYBEAN MILK
JP4703126B2 (en) * 2004-03-29 2011-06-15 太平洋セメント株式会社 Hydrogen storage material manufacturing apparatus and hydrogen storage material manufacturing method
JP5058037B2 (en) * 2008-03-17 2012-10-24 Ｊｆｅスチール株式会社 Method for producing carbon monoxide adsorbent
SG170634A1 (en) * 2009-10-20 2011-05-30 Musse Singapore Pte Ltd An apparatus and method for size reduction
TR201904225A2 (en) 2019-03-21 2019-07-22 Kaleseramik Canakkale Kalebodur Seramik Sanayi Anonim Sirketi A MILLING SYSTEM AND METHOD AND A RELATED CERAMIC PRODUCTION METHOD

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL103261C (en) * 1954-12-17
CH505651A (en) * 1968-03-21 1971-04-15 Escher Wyss Ag Device for grinding and sifting a granular material, in particular cement
US3887142A (en) * 1973-06-21 1975-06-03 Richard E Mcelvain Ore grinding circuit
DE3334235A1 (en) * 1982-11-04 1984-05-10 Heinz 4630 Bochum Jäger Process and apparatus for the energy-saving production of a fine material, especially cement
GB8617387D0 (en) * 1986-07-16 1986-08-20 Alcan Int Ltd Alumina hydrates

Also Published As

Publication number Publication date
ATE77974T1 (en) 1992-07-15
EP0298777A3 (en) 1990-02-07
EP0298777B1 (en) 1992-07-08
NO883051L (en) 1989-01-10
AU605886B2 (en) 1991-01-24
IE61937B1 (en) 1994-11-30
BR8803484A (en) 1989-01-31
NO174282C (en) 1994-04-13
IN171515B (en) 1992-10-31
NO883051D0 (en) 1988-07-08
GB8716213D0 (en) 1987-08-12
DE3872610T2 (en) 1993-02-18
DE3872610D1 (en) 1992-08-13
CA1323015C (en) 1993-10-12
IE882089L (en) 1989-01-09
JPH01104354A (en) 1989-04-21
AU1891088A (en) 1989-01-12
NO174282B (en) 1994-01-03
EP0298777A2 (en) 1989-01-11

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