Applications of the CrossFlow teeter-bed separator in the U.S. coal industry

J. N. Kohmuench, M. J. Mankosa, R. Q. Honaker, R. C. Bratton

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Hindered-bed separators are recognized as low-cost, high-capacity devices for both classification and density separation; however, since their inception there have been few significant advances in the fundamental technology. Recently, Eriez has shown through modeling and pilot-scale testing that the innovative approach to feed presentation offered in the CrossFlow teeter-bed separator provides improved metallurgy when compared to traditional hindered-bed classifiers or single-stage coal spirals. This design feature prevents excess water from entering the separation chamber and disrupting the overall fluidization flow rate within the teeter zone. Most recently, a side-by-side industrial-scale evaluation verified that this technology improves overall efficiency and simultaneously reduces the separation cut point. With regards to coal processing, data from full-scale units indicate that the CrossFlow offers good separation efficiency, high unit capacity and metallurgical results consistent with laboratory- and pilot-scale separators.

Original languageEnglish
Pages (from-to)187-195
Number of pages9
JournalMinerals and Metallurgical Processing
Issue number4
StatePublished - Nov 2006


  • Classification
  • CrossFlow separator
  • Density separation
  • Hindered bed separators

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Chemistry (all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Applications of the CrossFlow teeter-bed separator in the U.S. coal industry'. Together they form a unique fingerprint.

Cite this