Development and evaluation of the CAVEX dense medium cyclone

Rick Honaker, Robert Hollis, Debra Switzer, Tom Coker

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


The CAVEX dense medium cyclone (DMC) was developed in the later part of the 1990s as a result of the expertise developed by Weir engineers in slurry pumping. The inlet area of the cyclone is designed to minimize turbulence and reduce wear at the feed entry point which provides more energy for particle separation at a given feed pressure. A parametric study was performed on a 150mm diameter unit to quantify separation efficiency as a function of feed pressure, apex diameter, medium density and cone angle. The added energy in the cyclone was confirmed by comparing the stability of the medium in the CAVEX unit with that provided by a common commercial unit having the same dimensions. A 500mm unit was installed in parallel with an indentically-sized industrial in an operating preparation plant treating 12 x 1mm coal. The separation efficiency values achieved by the CAVEX DMC were found to be higher than those obtained by the standard industrial unit and the amount of improvement increased with a decrease in particle size. The data from the pilot-scale and in-plant tests is presented and discussed in this publication.

Original languageEnglish
Title of host publicationInternational Coal Preparation Congress 2010, Conference Proceedings
Number of pages8
StatePublished - 2010
Event16th International Coal Preparation Congress, ICPC 2010 - Lexington, KY, United States
Duration: Apr 25 2010Apr 30 2010

Publication series

NameInternational Coal Preparation Congress 2010, Conference Proceedings


Conference16th International Coal Preparation Congress, ICPC 2010
Country/TerritoryUnited States
CityLexington, KY

ASJC Scopus subject areas

  • Economic Geology
  • Geotechnical Engineering and Engineering Geology


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