GB718845A - Process and apparatus for the separation of mixtures of solid particles into fractions according to specific gravity - Google Patents

Process and apparatus for the separation of mixtures of solid particles into fractions according to specific gravity

Info

Publication number
GB718845A
GB718845A GB23594/52A GB2359452A GB718845A GB 718845 A GB718845 A GB 718845A GB 23594/52 A GB23594/52 A GB 23594/52A GB 2359452 A GB2359452 A GB 2359452A GB 718845 A GB718845 A GB 718845A
Authority
GB
United Kingdom
Prior art keywords
suspension
classifier
particles
specific gravity
separator
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
Application number
GB23594/52A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB718845A publication Critical patent/GB718845A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/44—Application of particular media therefor
    • B03B5/447—Application of particular media therefor recovery of heavy media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B03B5/34—Applications of hydrocyclones

Landscapes

  • Cyclones (AREA)

Abstract

718,845. Washing granular material. MAATSCHAPPIJ VOOR KOLENBEWERKING STAMICARBON N.V. Sept. 19, 1952 [Sept. 24, 1951], No. 23594/52. Class 82(2) Mixtures of particles of different specific gravities are separated into fractions corresponding to a certain specific gravity of suspension in a separating suspension utilizing magnetically susceptible particles, the suspension having a specific gravity lower than the specific gravity of the lighter fraction to be separated. The light fraction obtained from the specific gravity separator is treated in a classifier (which separates according to settling rate). The classifier yields a fraction containing virtually all the light fraction, and one containing nearly all the suspension medium. The latter is returned to the process, whereas the former is treated magnetically to recover any suspension therefrom. The heavy fraction obtained from the separator is also treated magnetically to recover suspension. The suspension should be as stable as possible, one having 85 per cent. by weight of the particles smaller than 60 microns being mentioned. The separator may be a hydrocyclone or a jig. The classifier may be a hydrocyclone, a jig or a Dow classifier. If either of the two latter are used the suspension should be fed to them in a demagnetized condition. The cyclone 11 delivers the light fraction to a classifier 17 which returns the suspension particles direct to the receiver 7 via a collecting vessel 21. The classifier delivers the light fraction particles to two magnetic separators 19. 20, the latter working on the non-magnetic residue of the first. Similarly the heavy fraction is passed through the magnetic separators 13, 14. The medium recovered by the magnetic separators is returned by a thickener 22 to the receiver 7 into which new suspension and the material to be separated are also passed. The pump 10 supplies the mixture to the separator 11. A coarser range of particles than those dealt with in this process may be separated in a sink-and-float process and the media for both processes may be recovered by means common to both processes. The cyclone 11 .used in the process of the invention is preferably that disclosed in Specification 590,481. Specification 704,890 also is referred to.
GB23594/52A 1951-09-24 1952-09-19 Process and apparatus for the separation of mixtures of solid particles into fractions according to specific gravity Expired GB718845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL718845X 1951-09-24

Publications (1)

Publication Number Publication Date
GB718845A true GB718845A (en) 1954-11-24

Family

ID=19815024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23594/52A Expired GB718845A (en) 1951-09-24 1952-09-19 Process and apparatus for the separation of mixtures of solid particles into fractions according to specific gravity

Country Status (1)

Country Link
GB (1) GB718845A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550103A1 (en) * 1983-08-02 1985-02-08 Fives Cail Babcock Method for the densimetric separation of particles using a hydrocyclone in a dense medium and an installation for implementing the method
EP0316201A1 (en) * 1987-11-11 1989-05-17 Ryan Investments B.V. Method and apparatus for separating and recovering particulate material
CN113019671A (en) * 2021-03-19 2021-06-25 神华神东煤炭集团有限责任公司 Screening method and screening system for medium in full-dense coal separation process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550103A1 (en) * 1983-08-02 1985-02-08 Fives Cail Babcock Method for the densimetric separation of particles using a hydrocyclone in a dense medium and an installation for implementing the method
EP0316201A1 (en) * 1987-11-11 1989-05-17 Ryan Investments B.V. Method and apparatus for separating and recovering particulate material
US4865740A (en) * 1987-11-11 1989-09-12 Ryan Investments, B.V. Method and apparatus for separating and recovering particulate material
CN113019671A (en) * 2021-03-19 2021-06-25 神华神东煤炭集团有限责任公司 Screening method and screening system for medium in full-dense coal separation process

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