Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation
Electrical capacitance volume tomography (ECVT) is proposed as a novel real time monitoring system for column flotation process. This study aims to validate the results of static and dynamic simulations using ECVT and ECVT-Computational Fluids dynamics (ECVT-CFD) and real time column flotation monitoring experiment using ECVT system. Bubble fractions with variation of gas velocity (0.02, 0.03 and 0.04 m/s) which were resulted from the simulation and experiments of column flotation process were compared and measured. The results from ECVT experiments successfully reconstruct the images of bubbles inside the column flotation in real time. The comparison results from both of simulations and experiments showed that bubble fraction increases with increasing in gas velocity. The validation on bubble fraction measurement based on simulations compared with the experimental results gives accuracy at 86 - 98%. It is indicated that at higher gas velocity (0.04 m/s) the accuracy of the simulations compared with the experimental results, is better than that of lower gas velocity (0.02 and 0.03 m/s).