Abstract: Based on theory and numerical simulation, a particle-wall adhesion model in vane cyclone tube was established to study the effect of throughput, temperature, particle concentration in gas feed and particle size on particle-wall adhesion in the discharge cone. Investigation shows that the shear velocity of flow near the wall is the critical factor for particle adhesion. With increasing the rate of feed, shear velocity of the gaseous flow near the wall increases greatly and the concentration of particles close to the wall rises, leading to more particle-wall adhesion. Operation parameters and solid properties affect the particle-wall adhesion. The influence of operation temperature is mainly through changing the Young modulus of particles, which declines significantly with operation temperature rising, resulting in more adhesion. Besides, the higher the particle concentration, the more collision and discharge cone scaling will occur. Particles of diameters between 1 μm and 10 μm are apt to deposit on discharge cone due to stay for a long time.