在 D8 2的不锈钢高温流化床实验台中 ,以 IHI灰样作为实验物料 ,研究了高温流化床的临界流化速度 .结果表明 ,对于属于 B类粒子的 IHI灰样 ,温度由常温升高到 1 0 0 0℃时 ,雷诺数小于 40 ,流化床运动处于层流运动区范围 .随着床层温度升高 ,物料颗粒的最小流化速度减小 .根据实验结果提出了预测不同温度下的该灰样颗粒最小流化速度式 . The critical fluidization velocity of high-temperature fluidized bed was studied using IHI gray sample as experimental material in D8 2 stainless steel high temperature fluidized bed test bed.The results showed that for IHI gray samples belonging to class B particles, the temperature increased from room temperature At 100 ℃, the Reynolds number is less than 40, and the fluidized bed movement is in the range of laminar motion. As the bed temperature increases, the minimum fluidization velocity of the material particles decreases. Based on the experimental results, Under the ash-like particles minimum fluidization velocity type.