The new three-phase fluidized bed flotation column (TFC) hydrodynamics characteristics, such as gas holdup, bubble diameter and bubble surface area flux have been carried out, and this study focuses on bed fluid hydrodynamic parameters of the TFC. The bed hydrodynamic characteristics viz., bed fluctuation ratio (r), bed expansion ratio (R) and bed voidage (ε) of the TFC have been studied using air as the discontinuous phase and water as the continuous phase, respectively. The effects of the system parameters studied include superficial gas, liquid velocities and initial static bed height (H₀). Experimental studies based on the Response surface methodology (RSM) have been made to investigate the mathematical model of hydrodynamic parameters (r, R, ε) and bubble diameter (D_b) of the TFC. The results show that the models which were established by operating variables can predict the r, R, ε and D_b of the TFC well. Based on the previous investigation of the optimization of bubble performance parameters which has been caried out by Liu et al. (2020), the correlation of D_b has been carried out, and the result shows that H₀ is the boundary condition that determines the variation of D_b. The optimization of D_b by RSM shows that relatively small bubbles can be obtained when H₀ is greater than 0.290 m within the range of parameters studied. The values of the experiment have been compared with those predicted by the proposed models and have been found to agree well.

对新型三相流化床浮选柱（TFC）流体动力学特性，如含气量、气泡直径和气泡表面积通量进行了研究，本研究重点研究了三相流化床浮选柱的床流体流体动力学参数。分别以空气为非连续相、水为连续相研究了TFC的床层流体动力学特性，即床层波动率（r）、床层膨胀率（R ）和床层空隙率（ε）。所研究的系统参数的影响包括表观气体、液体速度和初始静态床高度（H ₀ ）。基于响应面法 (RSM) 的实验研究已用于研究水动力参数的数学模型 (r , R , ε) 和 TFC 的气泡直径 ( D _b )。结果表明，通过运行变量建立的模型可以很好地预测TFC的_r、 R 、 ε和Db。基于之前由 Liu 等人进行的气泡性能参数优化研究。(2020)，对D _b进行了相关，结果表明H ₀是决定D _b变化的边界条件。D _b的优化RSM 表明，在所研究的参数范围内，当H ₀大于 0.290 m时，可以获得相对较小的气泡。实验的值已经与所提出的模型预测的值进行了比较，并且发现非常吻合。