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Gas Holdup Determination in Three-Phase Slurry (Flotation) Systems
By
Samad Banisi
Published in
Department of Mining and Metallurgical Engineering, McGill University
at
1992
Direct link:
http://kmpchemmat.ir/pii/27766
Abstract
This document reviews the available methods for estimating holdup in three-phase systems and proposes a new technique based on a combination of conductivity and pressure difference measurements. The proposed approach is first tested for estimating phase holdup in two-phase systems (solid-water and gas-water) in a laboratory flotation column, resulting in the development of a new technique for online measurement of solids holdup in solid-water systems. The fundamental concepts underlying this technique and the effects of relevant parameters such as temperature and cell constant on phase holdup estimation are discussed. Experimental results are presented that demonstrate good agreement between estimated and actual holdup values. If necessary precautions are taken, particularly calibration of the pressure transducers, holdup estimation using pressure difference and conductivity-based techniques can be comparable. Finally, the schedule of the research program is outlined.
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