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GB1507601A - Method of reclaiming water and coal from coal-treatment underflow by two-stage separation of solids - Google Patents

Method of reclaiming water and coal from coal-treatment underflow by two-stage separation of solids

Info

Publication number
GB1507601A
GB1507601A GB1189/76A GB118976A GB1507601A GB 1507601 A GB1507601 A GB 1507601A GB 1189/76 A GB1189/76 A GB 1189/76A GB 118976 A GB118976 A GB 118976A GB 1507601 A GB1507601 A GB 1507601A
Authority
GB
United Kingdom
Prior art keywords
coal
ash
water
slurry
flocculant
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
GB1189/76A
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.)
American Minechem Corp
Original Assignee
American Minechem Corp
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 American Minechem Corp filed Critical American Minechem Corp
Publication of GB1507601A publication Critical patent/GB1507601A/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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D3/00—Differential sedimentation
    • B03D3/06—Flocculation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

1507601 Selective agglomeration of coal particles AMERICAN MINECHEM CORP 13 Jan 1976 [13 Jan 1975 27 Aug 1975] 01189/76 Heading B2H A method of recovering coal and water from an aqueous slurry of coal and ash fines comprises adding to the slurry a liquid which is lyophobic to water and ash and lyophilic to coal to agglomerate the coal fines, removing the agglomerated coal to leave a substantially coal-free slurry, adding to the slurry a flocculant which is lyophobic to water and lyophilic to ash, and removing the flocculated solids thus formed to leave a solids-free solution of flocculant. The liquid added to agglomerate the coal fines may be light fuel oil, kerosene, creosote, anthracene oil, lubricating oil or chlorinated biphenyls. The flocculant for the ash may be high molecular weight polyacrylamides, polyethylene oxides, polyethylene imines, polyvinyl pyrolidones or polysaccharides. In the embodiment shown, the agglomerated coal fines produced in a vessel 13 are separated from the ash and water in a separator 16 e.g. an elutriator, cyclone, spiral separator or sink-float tank, are dewatered in an apparatus 18, and are then pelletized in an apparatus 21. The coal-free slurry from the separator 16 is mixed with a flocculant and passed to a thickener 25 in which the flocculated solids settle to the bottom and clear water is recovered for re-use. The flocculated solids are dewatered and pelletized in an apparatus 30. In a modification, flocculation, dewatering and pelletizing are performed concurrently in a single rotating drum.
GB1189/76A 1975-01-13 1976-01-13 Method of reclaiming water and coal from coal-treatment underflow by two-stage separation of solids Expired GB1507601A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54034875A 1975-01-13 1975-01-13
US60805975A 1975-08-27 1975-08-27

Publications (1)

Publication Number Publication Date
GB1507601A true GB1507601A (en) 1978-04-19

Family

ID=27066415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1189/76A Expired GB1507601A (en) 1975-01-13 1976-01-13 Method of reclaiming water and coal from coal-treatment underflow by two-stage separation of solids

Country Status (3)

Country Link
CA (1) CA1050179A (en)
DE (1) DE2600674A1 (en)
GB (1) GB1507601A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244898A1 (en) * 1982-12-04 1984-06-07 Chemische Fabrik Stockhausen GmbH, 4150 Krefeld METHOD FOR SEPARATING MINERAL ULTRAFINE GRAIN FROM WATER WATER OF THE COAL TREATMENT OR. FROM CARBONATE
GB2143155A (en) * 1983-06-27 1985-02-06 Conoco Inc A method of separating fine coal particles from refuse
WO2001003843A1 (en) * 1999-07-08 2001-01-18 The Governors Of The University Of Alberta Process for treating fine coal particles
US6767465B1 (en) 1999-07-08 2004-07-27 Govenors Of The University Of Alberta Process for treating fine coal particles
SG160279A1 (en) * 2008-09-19 2010-04-29 Palo Alto Res Ct Inc Method and system for seeding with mature floc to accelerate aggregation in a water treatment process
EP2493586A1 (en) * 2009-10-30 2012-09-05 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
CN109293044A (en) * 2018-10-08 2019-02-01 国电常州发电有限公司 Coal conveying wastewater treatment modification device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111940147A (en) * 2019-12-10 2020-11-17 湖北大峪口化工有限责任公司 Application of naphthalene-based superplasticizer as collophanite beneficiation inhibitor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244898A1 (en) * 1982-12-04 1984-06-07 Chemische Fabrik Stockhausen GmbH, 4150 Krefeld METHOD FOR SEPARATING MINERAL ULTRAFINE GRAIN FROM WATER WATER OF THE COAL TREATMENT OR. FROM CARBONATE
GB2143155A (en) * 1983-06-27 1985-02-06 Conoco Inc A method of separating fine coal particles from refuse
WO2001003843A1 (en) * 1999-07-08 2001-01-18 The Governors Of The University Of Alberta Process for treating fine coal particles
US6767465B1 (en) 1999-07-08 2004-07-27 Govenors Of The University Of Alberta Process for treating fine coal particles
SG160279A1 (en) * 2008-09-19 2010-04-29 Palo Alto Res Ct Inc Method and system for seeding with mature floc to accelerate aggregation in a water treatment process
EP2493586A1 (en) * 2009-10-30 2012-09-05 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
EP2493586A4 (en) * 2009-10-30 2014-07-23 Suncor Energy Inc Depositing and farming methods for drying oil sand mature fine tailings
US9068776B2 (en) 2009-10-30 2015-06-30 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
CN109293044A (en) * 2018-10-08 2019-02-01 国电常州发电有限公司 Coal conveying wastewater treatment modification device

Also Published As

Publication number Publication date
CA1050179A (en) 1979-03-06
DE2600674A1 (en) 1976-07-15
AU1010476A (en) 1977-07-14

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee