GB2114473A - Autogenous heavy medium process and apparatus for separating coal from refuse - Google Patents

Autogenous heavy medium process and apparatus for separating coal from refuse

Info

Publication number
GB2114473A
GB2114473A GB08303434A GB8303434A GB2114473A GB 2114473 A GB2114473 A GB 2114473A GB 08303434 A GB08303434 A GB 08303434A GB 8303434 A GB8303434 A GB 8303434A GB 2114473 A GB2114473 A GB 2114473A
Authority
GB
United Kingdom
Prior art keywords
rich
refuse
coal
slurry
underflow
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.)
Withdrawn
Application number
GB08303434A
Other versions
GB8303434D0 (en
Inventor
John W Rich
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US06/279,627 external-priority patent/US4364822A/en
Application filed by Individual filed Critical Individual
Publication of GB8303434D0 publication Critical patent/GB8303434D0/en
Publication of GB2114473A publication Critical patent/GB2114473A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • 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
    • B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • B03B13/005—Methods or arrangements for controlling the physical properties of heavy media, e.g. density, concentration or viscosity
    • 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
    • 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
    • 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
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/081—Shapes or dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geometry (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Cyclones (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Coal is separated from mining refuse utilizing an autogenous non-magnetic heavy medium and one or more cyclonic separators. In the process, raw input from mine tailings is screened and mixed with heavy medium to form an aqueous slurry feedstock. The feedstock slurry flows through a primary cyclonic separator (322) which causes a coal-rich portion to exit its overflow and a refuse-rich portion to exit its underflow. The coal-rich overflow is dewatered to produce clean coal solids and a water-rich underflow slurry. The refuse-rich underflow from the primary cyclone (322) is dewatered to produce solid refuse particles and one portion of the heavy medium. Another portion of the heavy medium is obtained by the underflow from the coal-rich slurry dewatering equipment. The primary cyclone (322) has a cylindrical section (323) with an axial extent greater than its inside diameter for imparting to tangentially-admitted feedstock slurry a substantially constant acceleration followed immediately by increasing acceleration in a depending conical portion (326). A vortex finder (331) depends to about the middle of the cylindrical chamber for exhausting the coal-rich overflow slurry therefrom, and the refuse-rich underflow slurry is discharged through a bottom orifice (329). If desired, the refuse-rich underflow from a dewatered cyclone located downstream of the primary cyclone (322) can be crushed and recycled through the primary cyclone (322) to separate middlings.
GB08303434A 1981-07-01 1982-06-28 Autogenous heavy medium process and apparatus for separating coal from refuse Withdrawn GB2114473A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/279,627 US4364822A (en) 1981-04-13 1981-07-01 Autogenous heavy medium process and apparatus for separating coal from refuse
PCT/US1982/000867 WO1983000103A1 (en) 1981-07-01 1982-06-28 Autogenous heavy medium process and apparatus for separating coal from refuse

Publications (2)

Publication Number Publication Date
GB8303434D0 GB8303434D0 (en) 1983-03-16
GB2114473A true GB2114473A (en) 1983-08-24

Family

ID=23069770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08303434A Withdrawn GB2114473A (en) 1981-07-01 1982-06-28 Autogenous heavy medium process and apparatus for separating coal from refuse

Country Status (5)

Country Link
JP (1) JPS58501213A (en)
AU (1) AU8760182A (en)
GB (1) GB2114473A (en)
WO (1) WO1983000103A1 (en)
ZA (1) ZA824192B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585265B1 (en) * 1985-07-26 1987-10-23 Gagneraud Pere Fils Entreprise PROCESS FOR THE RECOVERY OF VALUABLE FINE PARTICLES CONTAINED IN MINING GARBAGE
DE9205057U1 (en) * 1992-04-10 1992-06-17 H. Krantz Gmbh & Co, 5100 Aachen Filter system
CN114459942B (en) * 2021-12-21 2024-06-07 中南大学 Intelligent concentration measurement system and ore pulp concentration detection method for concentrating mill
CN115069405B (en) * 2022-06-02 2023-05-26 太原理工大学 Water-medium wind power separation device and method for separating residual carbon from coal gasification ash

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA506108A (en) * 1954-09-28 Krijgsman Centinus Separating method and apparatus
US2723750A (en) * 1955-11-15 Hydrocyclone
US2373635A (en) * 1943-06-18 1945-04-10 Minerals Beneficiation Inc Method of separating minerals of different specific gravity
GB666801A (en) * 1948-08-20 1952-02-20 Stamicarbon Process for the separation of mixtures of solid materials of different specific gravity and different grain size
US2949190A (en) * 1957-09-19 1960-08-16 Mineral Proc Corp Separation of fine sized solids
US3130157A (en) * 1958-12-15 1964-04-21 Denis F Kelsall Hydro-cyclones
US3389793A (en) * 1967-04-12 1968-06-25 Stamicarbon Cyclone washer with water only
US3926787A (en) * 1973-03-02 1975-12-16 C G Process Coal Company Method and apparatus for reducing sulphur and ash content of coal
US3887456A (en) * 1973-10-01 1975-06-03 James W Loughner Classifier with rifflers and variable throat
US4226708A (en) * 1977-02-24 1980-10-07 Coal Processing Equipment, Inc. Variable wall and vortex finder hydrocyclone classifier

Also Published As

Publication number Publication date
AU8760182A (en) 1983-02-02
WO1983000103A1 (en) 1983-01-20
ZA824192B (en) 1983-04-27
GB8303434D0 (en) 1983-03-16
JPS58501213A (en) 1983-07-28

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)