Development of high gradient and open gradient magnetic separation

Hise, E.C.

doi:10.1109/tmag.1982.1061932

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…It is essential to distinguish clearly between the contributions the magnetic susceptibility and mineral morphology make to the overall separation process. In this paper we discuss some of these questions specifically for UK coals in contrast to much of the previous work which has concentrated almost entirely on coals from the eastern USA (Trindade et a1 1974, Lin et a1 1974, Slaughter 1980, Hise 1982.…”

Section: Introductionmentioning

confidence: 94%

Magnetic susceptibility and separation of inorganic material from UK coals

Male¹

1984

J. Phys. D: Appl. Phys.

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The main inorganic compounds in coal are FeS2, mixtures of SiO2 and Al2O3 and other alkali metal oxides. The magnetic removal of these compounds depends on their relative susceptibility compared to that of organic mineral-free coal (-6*10-9 kg-1). This assumes that the feed coal consists of a physical mixture of particles of an appropriate size range to be separated. However, this depends on the morphology of the minerals in the coal strata and the degree to which they are liberated on grinding. Measurements of the magnetic susceptibility of the mineral matter and the degree to which each coal can be magnetically separated have shown, for the UK coals studied, the release of the mineral matter determines the effectiveness of the separation process rather than inherent differences in the magnetic susceptibility. The magnetic susceptibility of the mineral matter is in the range +4 to 7*1--8 kg-1 for magnetic fields above 1 T. For coals in which the majority of the mineral matter is liberated, absolute sulphur and ash reductions of between 30 and 40 wt.% can be achieved.

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Section: Introductionmentioning

confidence: 94%

Magnetic susceptibility and separation of inorganic material from UK coals

Male¹

1984

J. Phys. D: Appl. Phys.

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“…with a size fraction of -600/+150 m are shown in Fig. II (--0 --) and superconductin magnet (---A---) with the gravimetric method21, 42 (I).…”

Section: Open Gradient Magnetic Separationmentioning

confidence: 99%

The Magnetic Beneficiation of Coal

Male

1985

Physical Separation in Science and Engineering

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The magnetic demineralization of coal can produce a fuel containing lower leveIs of sulphur and ash forming minerals. The ability of the magnetic separation technique to process material over a wide range of particle sizes (I-iOOO m) and to operate on either liquid or gaseous feed enables a number of possible coal processing applications. These range from dry desulphurization of power station pulverized fuel to the cleaning of solvent refined coals. This article reviews work on the development of magnetic separation as applied to coal processing.

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Superconducting magnet design for open gradient magnetic separation

Gerhold¹

1986

Cryogenics

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Development of high gradient and open gradient magnetic separation

Cited by 12 publications

References 2 publications

Magnetic susceptibility and separation of inorganic material from UK coals

Magnetic susceptibility and separation of inorganic material from UK coals

The Magnetic Beneficiation of Coal

Superconducting magnet design for open gradient magnetic separation

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