Evaluation of the Altair Centrifugal Jig for fine coal separation

M. K. Mohanty, R. Q. Honaker

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A significant effort has been made during the past decade to develop gravity separators for treating fine particles. As a result, several enhanced gravity separators have been developed and commercialized. The Altair Centrifugal Jig is an enhanced gravity separator that provides relatively efficient separations on +25 μm size fractions. An experimental program conducted on -600 μm coal found that the Altair Jig reduced the ash content of the 600×44 μm material from about 30% to 10% with an 86% combustible recovery value. The pulse water pressure, feed volumetric rate and ragging volume were found to be the key operating parameters affecting the separation performance indices obtained from the process. A low density cut point of 1.55 with a probable error value of 0.09 was indicative of the high process efficiency values achievable by the Altair Jig.

Original languageEnglish
Pages (from-to)85-106
Number of pages22
JournalCoal Preparation
Issue number1
StatePublished - 1999

ASJC Scopus subject areas

  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology


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