Study on fluidization mechanisms and characteristics of turbulence particle fluidized bed in mineralization

This study investigates the fluidization behavior of a turbulence-regulated particle fluidized bed, focusing on its application to flotation processes. Key variables – including particle size, gas velocity, and bed height – were examined to assess their effects on pressure drop, expansion ratio, volatility, and porosity. Results show that the minimum fluidization velocity decreases as gas velocity and particle size increase. A comprehensive bed flow model was developed, utilizing multiple linear regression and dimensionless numbers to characterize the system’s hydrodynamics. The models accurately predict fluctuation ratio, expansion ratio, and porosity across different operating conditions. Additionally, the relationship between bubble diameter and expansion parameters was explored, revealing that bed height significantly influences bubble size behavior. These findings offer practical insights for optimizing industrial fluidized bed performance, especially in flotation systems, and lay the groundwork for future experimental research.