Abstract: Based on Eulerian two-fluid model and Gidaspow model, a mathematic model for predicting the fluidized chlorination of titanium slag spouting fluidized bed was established. The minimum spouting speed and maximum spouting height of titanium slag spouted bed were obtained by empirical formula, meanwhile the minimum spouting speed was corrected. Then, Based on the minimum spouting speed and the related boundary conditions, hydrodynamic characteristics of gas-solid two-phase flow in titanium slag spouting fluidized bed was simulated by fluent software. At last, the flow characteristics and zoning characteristics of titanium slag spouting fluidized bed at different injection rates were analyzed. The results show that the Gisher && Mathur formula is more suitable for the prediction of the minimum spouting speed in titanium slag spouting fluidized bed. The modified minimum spouting speed can accurately simulate the hydrodynamic characteristics of titanium slag spouted bed. The numerical simulation of the hydrodynamic characteristics, the partition cloud and vector, the solid particle trajectory and the maximum spouting height were consistent with the relevant research results.