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Online Gas and Solids Holdup Estimation in Solid Liquid Gas Systems
By
S. Banisi, J.A. Finch, A.R. Laplante
Published in
Canadian Mineral Processors Conference (CMP)
at
1994
Direct link:
http://kmpchemmat.ir/pii/31902
Abstract
A technique for on-line simultaneous estimation of gas and solids holdup (volume fraction), based on a combination of conductivity and pressure difference measurements, is proposed and tested in a laboratory flotation column (10cm in diameter and 447cm in height). Fundamental concepts under! ying this technique and the effect of relevant parameters are discussed. In the studied range, 3-30 %v/v gas holdup and 2-18 % v/v solids holdup, experimental results showed good agreement between the estimated and actual holdup values (as determined by an isolating technique). The relative accuracy of the solids holdup estimation increased when solids density or solids concentration increased. Frequent re-calibration of pressure transducers was found necessary for accurate phase holdup estimation.
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