本文以螺旋溜槽、尖缩溜槽为代表的细粒重选设备进行了两相流雷诺数的研究。采用各种测试手段对计算雷诺数相关的物理量——流速、浓度、密度、粘度、流膜厚度进行测定,然后分别计算两相流雷诺数,查明分选过程雷诺数的分布规律,揭示流膜的特性及分选机理。同时还考查了两相流流态的判定标准,表明仍可借用 R_e=300作为判别标准。 In this paper, spiral chute, shrink chute, represented by the fine grained re-election equipment for two-phase flow Reynolds number. Reynolds numbers were calculated by Reynolds number using various testing methods - flow rate, concentration, density, viscosity and flow film thickness. Then the Reynolds numbers of two-phase flow were calculated, and the distribution of Reynolds number Membrane characteristics and sorting mechanism. At the same time also examined the two-phase flow pattern criteria, indicating that you can still borrow R_e = 300 as a criterion.