ZA884970B - Method of producing fine particles - Google Patents
Method of producing fine particlesInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-07-09 GB GB878716213A patent/GB8716213D0/en active Pending
-
1988
- 1988-07-07 NO NO883051A patent/NO174282C/en unknown
- 1988-07-07 CA CA000571405A patent/CA1323015C/en not_active Expired - Fee Related
- 1988-07-08 AU AU18910/88A patent/AU605886B2/en not_active Ceased
- 1988-07-08 DE DE8888306282T patent/DE3872610T2/en not_active Expired - Fee Related
- 1988-07-08 IE IE208988A patent/IE61937B1/en not_active IP Right Cessation
- 1988-07-08 EP EP88306282A patent/EP0298777B1/en not_active Expired - Lifetime
- 1988-07-08 AT AT88306282T patent/ATE77974T1/en active
- 1988-07-08 JP JP63169137A patent/JPH01104354A/en active Pending
- 1988-07-11 BR BR8803484A patent/BR8803484A/en not_active IP Right Cessation
- 1988-07-11 IN IN485/MAS/88A patent/IN171515B/en unknown
- 1988-07-11 ZA ZA884970A patent/ZA884970B/en unknown
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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