CA2103752A1 - Particle sorting method - Google Patents
Particle sorting methodInfo
- Publication number
- CA2103752A1 CA2103752A1 CA002103752A CA2103752A CA2103752A1 CA 2103752 A1 CA2103752 A1 CA 2103752A1 CA 002103752 A CA002103752 A CA 002103752A CA 2103752 A CA2103752 A CA 2103752A CA 2103752 A1 CA2103752 A1 CA 2103752A1
- Authority
- CA
- Canada
- Prior art keywords
- particles
- released
- liquid
- cooled
- sorting method
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- 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
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Particulate material is sorted according to the thermal properties of the particles. The particles (24, 25) to be sorted are initially all cooled to a temperature below the freezing point of a liquid. The cooled particles are then placed on a surface (14) and contacted with the liquid. This has the result that the liquid freezes in the localities of the particles to adhere them to the surface. Heat is then to the particles and those particles (24) with higher thermal diffusivity gain heat more rapidly than other particles (25) and are released first from the surface. Finally, particles (24) which have been released from the surface and those particles (25) which have; not been released from the surface after a certain time lapse are collected separetely.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA92/6017 | 1992-08-11 | ||
ZA926017 | 1992-08-11 | ||
ZA928939 | 1992-11-19 | ||
ZA92/8939 | 1992-11-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2103752A1 true CA2103752A1 (en) | 1994-02-12 |
CA2103752C CA2103752C (en) | 2004-07-13 |
Family
ID=27142177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002103752A Expired - Fee Related CA2103752C (en) | 1992-08-11 | 1993-08-10 | Particle sorting method |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU654780B2 (en) |
CA (1) | CA2103752C (en) |
GB (1) | GB2269549B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA95785B (en) * | 1994-02-21 | 1995-10-09 | De Beers Ind Diamond | Method and apparatus for sorting particulate material according to the thermal properties of the particles |
DE10352526B4 (en) * | 2003-11-05 | 2005-10-27 | select Ingenieurgesellschaft für Optoelektronik, Bilderkennung und Qualitätsprüfung mbH | Process for separating off-type additives from a product stream |
CN102814318A (en) * | 2012-09-07 | 2012-12-12 | 李泽晖 | Solid waste sorting process based on thermal conductivity difference of different materials |
CN104511428B (en) * | 2015-01-14 | 2017-06-20 | 华能桐乡燃机热电有限责任公司 | Thermal power plant pair roller type coal and gangue primary sorting equipment |
CN107512519A (en) * | 2017-09-11 | 2017-12-26 | 苏州立源信智能科技有限公司 | A kind of on-line checking rejects formula directional transport apparatus |
CN114887900B (en) * | 2022-06-09 | 2023-12-22 | 洮南市胜恩泰机械制造有限公司 | Corn ice particle separator |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU576289B2 (en) * | 1985-04-09 | 1988-08-18 | De Beers Industrial Diamond Division (Proprietary) Limited | Separation of diamonds from diamond bearing material |
GB2229116B (en) * | 1989-02-20 | 1992-12-02 | De Beers Ind Diamond | Particle sorting method and apparatus |
AU632947B2 (en) * | 1990-07-06 | 1993-01-14 | De Beers Industrial Diamond Division (Proprietary) Limited | Sorting method and apparatus |
-
1993
- 1993-08-10 CA CA002103752A patent/CA2103752C/en not_active Expired - Fee Related
- 1993-08-11 GB GB9316664A patent/GB2269549B/en not_active Expired - Fee Related
- 1993-08-11 AU AU44567/93A patent/AU654780B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
GB2269549A (en) | 1994-02-16 |
AU4456793A (en) | 1994-02-17 |
GB2269549B (en) | 1995-08-23 |
AU654780B2 (en) | 1994-11-17 |
CA2103752C (en) | 2004-07-13 |
GB9316664D0 (en) | 1993-09-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |