GB758178A - Process for separating mixtures of particles differing in size and specific gravity, into fractions according to specific gravity - Google Patents

Process for separating mixtures of particles differing in size and specific gravity, into fractions according to specific gravity

Info

Publication number
GB758178A
GB758178A GB33195/54A GB3319554A GB758178A GB 758178 A GB758178 A GB 758178A GB 33195/54 A GB33195/54 A GB 33195/54A GB 3319554 A GB3319554 A GB 3319554A GB 758178 A GB758178 A GB 758178A
Authority
GB
United Kingdom
Prior art keywords
specific gravity
thickener
added
fractions
magnetic
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
GB33195/54A
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 GB758178A publication Critical patent/GB758178A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions

Landscapes

  • Processing Of Solid Wastes (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Physical Water Treatments (AREA)

Abstract

758,178. Separating granular materials. STAMICARBON N.V. Nov. 16, 1954 [Nov. 21, 1953], No. 33195/54. Class 82(2). Mixtures of particles of differing sizes and specific gravities are separated according to specific gravity by first sizing them on a screen 1, using a magnetic suspension of specific gravity such that the screen underflow can be treated directly in a hydrocyclone 8 or a sink- and-float separator to give light fines 9 and heavy fines 11. The magnetic portion of these fractions is recovered by the separators 12, 10 and returned to the initial screening step, the gravity being corrected by water added at 16. Each fraction is again subjected to magnetic separation 37, 23, the residual magnetic material passing to a thickener 21. The purified fractions are thus dewatered in cyclones 41, 27 and filters 44, 30. The liquid from the filters is also passed to the thickener. The coarse particles pass to a mixing tank 5 and, together with added medium, pass to an inclined or horizontal hydrocyclone 52. The light fraction is screened at 53, the heavies at 59. The drained-off medium together with the thickened product from 21, passes back to the mixing tank 5. The washed-off medium is added to the first stage magnetic separators 12, 10. Additional magnetite may be added at 74 and demagnetised at 75. The thickener overflow f may be further heated e.g. by froth flotation to recover the wanted fractions and the froth then returned to the thickener 21. The tailings from the froth flotation may be flocculated. The diagram is of a coal washery. Specifications 662,794 and 726,510 are referred to.
GB33195/54A 1953-11-21 1954-11-16 Process for separating mixtures of particles differing in size and specific gravity, into fractions according to specific gravity Expired GB758178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL758178X 1953-11-21

Publications (1)

Publication Number Publication Date
GB758178A true GB758178A (en) 1956-10-03

Family

ID=19825342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33195/54A Expired GB758178A (en) 1953-11-21 1954-11-16 Process for separating mixtures of particles differing in size and specific gravity, into fractions according to specific gravity

Country Status (1)

Country Link
GB (1) GB758178A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212651A (en) * 1979-05-30 1980-07-15 The United States Of America As Represented By The United States Department Of Energy High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization
CN114653467A (en) * 2022-03-09 2022-06-24 山西天地王坡煤业有限公司 Medium adding method and device in heavy medium sorting process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212651A (en) * 1979-05-30 1980-07-15 The United States Of America As Represented By The United States Department Of Energy High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization
CN114653467A (en) * 2022-03-09 2022-06-24 山西天地王坡煤业有限公司 Medium adding method and device in heavy medium sorting process

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