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fine particles flotation patent

Froth flotation of fine particles Google Patents

US5304317A Froth flotation of fine particles Google Patents Froth flotation of fine particles Download PDF Info Publication number US5304317A 1992-03-25 Priority to US07/857,408 priority patent/US5217604A/en 1992-11-23 Application filed by Fospur Ltd filed Critical Fospur Ltd

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US4981582A Process and apparatus for separating fine

A method and apparatus are disclosed for the microbubble flotation separation of very fine particles, especially coal, so as to produce a high purity and large recovery efficiently. This is accomplished through the use of a high aspect ratio flotation column, microbubbles, and a countercurrent use of wash water to gently wash the froth.

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Process and apparatus for separating fine particles by

An apparatus is disclosed for the microbubble flotation separation of very fine and coarse particles, especially coal, and minerals so as to produce high purity and high recovery efficiency. This is accomplished through the use of a flotation column, microbubbles, recycling of the flotation pulp, and countercurrent wash water to gently wash the froth.

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US5051199A Froth flotation of mineral fines Google

Particles of a desired mineral are recovered from particles of an unwanted mineral in an aqueous slurry by means of a froth flotation process in which, after treatment of the mineral particles with a collector, a predominantly hydrophobic polymeric flocculating agent, which will selectively flocculate the desired mineral particles, is added to the slurry.

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WO2016048793A1 Flotation separation of fine coal

Coal fines are processed by flotation separation to separate coal particles from ash-forming component particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt.% and 55 wt.% coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming component particles by

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US Patent Application for FLOTATION SEPARATION OF

Coal fines are processed by flotation separation to separate coal particles from ash-forming component particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt. % and 55 wt. % coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming component particles by

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US Patent for Froth flotation column Patent (Patent

A flotation chamber separates fine kaolin particles or the like by flotation out of a slurry. A generally cylindrical column has an inlet for injecting slurry into the column, a froth launder at an upper end of the column, and a tailings outlet at the lower end of the column. A draft tube is vertically oriented within the column and has upper and lower open ends.

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CN1229182C Improved froth flotation

A froth flotation process typically used to separate particulate materials such as coal, has a mixed size feed (1) separated in a sieve bend (2) into a stream of relatively fine particles (3) and a stream of relatively coarse particles (14). The fine particles are fed to a flotation cell (7) in the normal manner, while the coarse particles are mixed with wash water (16) and distributed onto or

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Froth flotation Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

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Fine particles processing: shear-flocculation and carrier

30-12-1990· International Journal of Mineral Processing, 30 (1990) 265-286 265 Elsevier Science Publishers B.V., Amsterdam Fine particles processing: shear-flocculation and carrier flotation a review T.V. Subrahmanyama and K.S.Eric Forssbergb aDepartamento de Geologia, CCE/UFRN, Campus Universitario, 59. 072 Natal-RN, Brazil bDivision of Mineral Processing, Luled University of

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dingli patented s fine secondary flotation cell Marco

We have dingli patented s fine secondary flotation cell,Table 1111 shows the features of MAC flotation cell Kadant’s MAC flotation cell deinking system uses air bubbles to float ink particles to the cell surface for removal from the recycled material The latest generation of the MAC cell deinking system incorporates a patented bubblewashing process to reduce power consumption and also fiber loss

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US Patent for Froth flotation column Patent (Patent

A flotation chamber separates fine kaolin particles or the like by flotation out of a slurry. A generally cylindrical column has an inlet for injecting slurry into the column, a froth launder at an upper end of the column, and a tailings outlet at the lower end of the column. A draft tube is vertically oriented within the column and has upper and lower open ends.

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US Patent Application for FLOTATION SEPARATION OF

Coal fines are processed by flotation separation to separate coal particles from ash-forming component particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt. % and 55 wt. % coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming component particles by

More

Process and apparatus for separating fine particles by

A method and apparatus are disclosed for the microbubble flotation separation of very fine particles, especially coal, so as to produce a high purity and large recovery efficiently. This is accomplished through the use of a high aspect ratio flotation column, microbubbles, and a countercurrent use of wash water to gently wash the froth.

More

US Patent for Froth flotation of mineral fines Patent

Froth flotation of mineral fines Oct 21, 1988 Fospur Limited Particles of a desired mineral are recovered from particles of an unwanted mineral in an aqueous slurry by a froth flotation process in which, after treatment of the mineral particles with a collector, a predominantly hydrophobic polymeric flocculating agent, which will selectively flocculate the desired mineral particles, is added

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Froth flotation of fine particles Fospur Limited

19-04-1994· Froth flotation of fine particles . United States Patent 5304317 . Abstract: Additive composition for use in separating particles of a desired material from particles of an undesired material in a froth flotation process using a frother. The composition includes an

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Fine Particle Flotation

Floating “fines” differs from floating “sands” because the fines have a much larger surface area compared to their mass. The forces that arise from this large specific surface are the key to under standing the behavior and treatment of fine particles. Though the nature of these forces is not thoroughly understood, enough work has been done to give a qualitative picture of what is

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The limits of fine particle flotation ScienceDirect

01-04-2010· 2. Approaches for fine particle flotation. The fundamental reason for the low flotation rate of fine particles is primarily due to their low collision efficiency with conventional flotation bubbles of a given size and velocity (Trahar and Warren, 1976, Fuerstenau, 1980,

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Flotation plant Bergwerksverband GmbH

What is claimed is: 1. A flotation plant comprising: tubular flow means having a first inlet and an outlet, and adapted to receive a liquid stream containing a plurality of first solid particles to be floated and a plurality of second solid particles not to be floated, said flow means further having a uniform cross section configuration and at least one curved tubular separating stretch

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Frothers demonstrating enhanced recovery of fine particles

Frothers demonstrating enhanced recovery of fine particles of coal in froth flotation Abstract. The invention is a process for recovering coal from raw coal which comprises subjecting the raw coal in the form of an aqueous pulp, to a flotation process in the presence of a flotation collector, and a flotating amount of a flotation frother which comprises the reaction product of a polyhydroxy C

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