Production of premium fuels from coal refuse pond material

R. Q. Honaker, D. P. Patil, A. Sirkeci, A. Patwardhan

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Because of increasing production of fine coal during mining over the past century and because of inefficient fine-coal recovery technologies, a vast reserve of high-quality coal now exists in refuse ponds. A novel fine-coal circuit, consisting of a hindered-bed classifier, an enhanced gravity concentrator and a flotation column, was evaluated for the recovery of fine coal from refuse ponds. The treatment of a pond derived from Pittsburgh No. 8 seam coal resulted in the production of a premium fuel containing less than 5% ash and a calorific value of about 30,170 kJ/kg with 60% mass yield. Results from the treatment of two refuse pond materials are presented in this paper.

Original languageEnglish
Pages (from-to)177-183
Number of pages7
JournalMinerals and Metallurgical Processing
Issue number4
StatePublished - Nov 2001


  • Coal recovery
  • Coal refuse ponds
  • Flotation
  • Gravity separation
  • Hindered-bed classifier

ASJC Scopus subject areas

  • Control and Systems Engineering
  • General Chemistry
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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