Maximum gas velocity in column flotation

Mku Thaddeus Ityokumbul

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Flotation is a surface-based separation process whose rate depends on the availability of bubble surface. The flotation column operational parameter controlling the availability of bubble surface is the gas velocity which emerges as a key design and scale-up parameter. The optimum gas velocity for column flotation has been identified to be in the bubbly flow regime [1,2]. By using dimensional analysis, it is shown here that the maximum gas velocity for the existence of bubbly flow conditions in flotation columns is given by Ug,max = 0.11Dc0.5. It is shown that all large diameter flotation columns are being operated in the bubbly flow regime but at gas velocities lower than 50% of the maximum predicted values.

Original languageEnglish (US)
Pages (from-to)1279-1286
Number of pages8
JournalMinerals Engineering
Volume6
Issue number12
DOIs
StatePublished - Jan 1 1993

Fingerprint

Flotation
Gases
gas
bubble
Availability
flotation
parameter

All Science Journal Classification (ASJC) codes

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

Cite this

Ityokumbul, Mku Thaddeus. / Maximum gas velocity in column flotation. In: Minerals Engineering. 1993 ; Vol. 6, No. 12. pp. 1279-1286.
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Maximum gas velocity in column flotation. / Ityokumbul, Mku Thaddeus.

In: Minerals Engineering, Vol. 6, No. 12, 01.01.1993, p. 1279-1286.

Research output: Contribution to journalArticle

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