Measurement of gas holdup characteristics in two-phase column flotation by electrical capacitance volume tomography

Harisma Nugraha, Didied Haryono, Sri Harjanto, Mahfudz Al Huda, Warsito P. Taruno

Research output: Contribution to journalArticlepeer-review

Abstract

Electrical capacitance volume tomography measured the gas holdup in two-phase column flotation. The purpose was to characterize gas holdup and understand its relation to flow patterns as a function of the types and doses of frothers. Experiments were conducted using laboratory-scale column flotation cells with dimensions of 5 ×125 cm. The superficial gas velocities in the experiment were 0.5-4 cm s−1 with an interval of 0.5 cm/s. Methyl isobutyl carbinol (MIBC) and Oreprep F-583-OZ (Oreprep) were used as frothers at 5-40 ppm doses. The results showed that the difference between the lowest and highest gas holdup in the bubbly flow regime was ∼0.07, and the transition from the bubbly to churn-turbulent flow occurred at a superficial gas velocity of 2 c m /s .

Original languageEnglish
Article number115033
JournalPhysica Scripta
Volume98
Issue number11
DOIs
Publication statusPublished - 1 Nov 2023

Keywords

  • column flotation
  • ECVT
  • flow pattern
  • non-intrusive measurement
  • non-invasive
  • two-phase system

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