Maceral and pyrite partitioning through high-gradient magnetic separation of selected western kentucky coals

James C. Hower, Eric J. Trinkle, Garry D. Wild

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The -0.5 inch (-1.27 cm) and -28 mesh (-600 μm) fractions of the run-of-mine coals from seven western Kentucky preparation plants were crushed to 90 percent passing 200 mesh (75 μm) and processed through high-gradient magnetic separation (HGMS). Petrographic analysis of the clean and refuse fractions indicated that the refuse contained nearly the same amount of vitrinite as the associated clean coal. This contrasts with the findings for other fine coals from the same plants where fine refuse had consistently less vitrinite and more fusinite and semifusinite than fine clean coals. Pyrite remaining in HGMS clean coals was significantly finer than pyrite in the refuse. Most of the pyrite in the clean was less than 5 μm in diameter, and, in all but one case, greater than 98 percent of the "clean" pyrite was less than 10 μm.

Original languageEnglish
Pages (from-to)203-213
Number of pages11
JournalFuel Processing Technology
Volume9
Issue number2
DOIs
StatePublished - Oct 1984

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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