GB496901A - Improvements in flotation of culm - Google Patents

Improvements in flotation of culm

Info

Publication number
GB496901A
GB496901A GB22609/37A GB2260937A GB496901A GB 496901 A GB496901 A GB 496901A GB 22609/37 A GB22609/37 A GB 22609/37A GB 2260937 A GB2260937 A GB 2260937A GB 496901 A GB496901 A GB 496901A
Authority
GB
United Kingdom
Prior art keywords
flotation
ranges
collector
coarser
frother
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
GB22609/37A
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.)
HARRY ADAM GRINE
Wyeth Holdings LLC
Original Assignee
HARRY ADAM GRINE
American Cyanamid Co
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 HARRY ADAM GRINE, American Cyanamid Co filed Critical HARRY ADAM GRINE
Publication of GB496901A publication Critical patent/GB496901A/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
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/002—Inorganic compounds
    • 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
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/005—Dispersants
    • 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
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • B03D2203/08—Coal ores, fly ash or soot

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

Fine refuse coal, e.g. anthracite slush culm, is cleaned by classifying it into two or more size ranges and subjecting each size range separately to a froth flotation process, using a smaller amount of collector with the finer ranges than with the coarser ranges. The flotation of the coarser coal may be effected without or with only a small amount of frother, the preferred frother being the mixture of alcohols and hydrocarbons described in Specification 446,418. The collector is preferably a hydrocarbon, e.g. kerosene, and sodium silicate may be added. Slimes, e.g. of minus 100 mesh, may be removed before flotation by any known means, alkali metal silicate being preferably added to the pulp to facilitate the desliming.
GB22609/37A 1936-08-26 1937-08-17 Improvements in flotation of culm Expired GB496901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US98072A US2136074A (en) 1936-08-26 1936-08-26 Flotation of culm

Publications (1)

Publication Number Publication Date
GB496901A true GB496901A (en) 1938-12-08

Family

ID=22266815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22609/37A Expired GB496901A (en) 1936-08-26 1937-08-17 Improvements in flotation of culm

Country Status (2)

Country Link
US (1) US2136074A (en)
GB (1) GB496901A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842319A (en) * 1952-11-05 1958-07-08 Reerink Wilhelm Method of producing ultra-clean coal
US3725538A (en) * 1970-04-20 1973-04-03 Garbalizer Corp Production of carbon from waste materials
US3919080A (en) * 1972-09-14 1975-11-11 Continental Oil Co Pyrite depression in coal flotation by the addition of sodium sulfite
US5936216A (en) * 1998-12-01 1999-08-10 Wu; Chiung-Hsin Froth floatation process for separating carbon from coal ash

Also Published As

Publication number Publication date
US2136074A (en) 1938-11-08

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