Wet-drum magnetic separation of dense-medium slurries containing fine coal refuse

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Laboratory testing was carried out to evaluate the performance of a wet-drum magnetic separator (WDMS) when treating magnetite dense-medium slurries containing fine bituminous coal refuse material. Test variables included slurry feed rate, magnetite-to-coal ratio, and size distribution of the coal refuse. The separations were carried out with and without the application of ultrasonic energy. The performance of the WDMS was evaluated based on the purity of the magnetic concentrate and recovery of magnetic material. As expected, the purity of the products depended on the operating conditions, whereas magnetic recovery was essentially independent of operating conditions. Moreover, under many conditions, the purity of the magnetic material increased slightly after ultrasonic treatment. For selected tests, the size distributions of the magnetic material were determined for both the magnetic concentrate and nonmagnetic streams. This analysis indicated that after demagnetization, the size distributions of the magnetic material in both the concentrate and nonmagnetic streams were similar.

Original languageEnglish (US)
Pages (from-to)155-171
Number of pages17
JournalCoal Preparation
Volume25
Issue number3
DOIs
StatePublished - Jul 1 2005

Fingerprint

Magnetic separation
Coal
Magnetic materials
Slurries
refuse
Magnetic separators
Ferrosoferric Oxide
coal
Magnetite
Ultrasonics
magnetite
Recovery
Demagnetization
Bituminous coal
bituminous coal
demagnetization
slurry
material
Testing
energy

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology

Cite this

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abstract = "Laboratory testing was carried out to evaluate the performance of a wet-drum magnetic separator (WDMS) when treating magnetite dense-medium slurries containing fine bituminous coal refuse material. Test variables included slurry feed rate, magnetite-to-coal ratio, and size distribution of the coal refuse. The separations were carried out with and without the application of ultrasonic energy. The performance of the WDMS was evaluated based on the purity of the magnetic concentrate and recovery of magnetic material. As expected, the purity of the products depended on the operating conditions, whereas magnetic recovery was essentially independent of operating conditions. Moreover, under many conditions, the purity of the magnetic material increased slightly after ultrasonic treatment. For selected tests, the size distributions of the magnetic material were determined for both the magnetic concentrate and nonmagnetic streams. This analysis indicated that after demagnetization, the size distributions of the magnetic material in both the concentrate and nonmagnetic streams were similar.",
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Wet-drum magnetic separation of dense-medium slurries containing fine coal refuse. / Franko, J.; Klima, Mark Stephen.

In: Coal Preparation, Vol. 25, No. 3, 01.07.2005, p. 155-171.

Research output: Contribution to journalArticle

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