Abstract: In this page, through simulation of the 3-D isothermal flow in mixing section of two-rotor continuous mixer-ECM30，thedistribution of axial velocity, shear stress,and mixing index were ob-tained, based on which the dispersive performance of tworotor continuous mixer in terms of axial veloci tyshear stress and mixing index were estimated. Compared the results from simulation about flow field of different rotors and inserted blocks, the influence of structure of rotor and inserted block on dis-persing performance in mixing section of two-rotor continuous mixer ECM30 was found as follows the shear flow increased and the elongation flow decreased with decreasing length of rotor convergence sec-tions, the shear flow and tension flow decreased with increasing angle of rotor. With the height of in- serted block increased, the backflow, shear flow increased, and tension flow decreased.

Key words: two-rotor continuous mixer；rotor structure;inserted block structure, three dimentional；isothermal flow, dispersive mixing performance