Collision behavior simulation for sinterfeed in high shear granulation
Before sintering,it is necessary to granulate the raw materials to improve the particle size and composition uniformity of the raw material particles,and then improve the air permeability of the sinterbed and sintering efficiency.Based on the Linear Cohesion particle contact model in the DEM,the API is used to define the energy density K of the water content of wet particles,and the motion behavior of wet particles in high-shear granulation is simulated.The results show that the K plays a key role in the collision and contact of particles.When the K value is in the range of 1～6 MJ/m3,the average velocity of wet particles in the high shear granulator also increases with the increase of K value.Smaller wet particles have less contact with each other,which is not conducive to the formation of quasi-particles.When the K value is 5～6 MJ/m3,the contact number between particles is relatively stable and reaches the maximum value,which is conducive to the uniformity and collision growth of raw materials.In addition,the rotation speed of the rotating blade is proportional to the average velocity of the particles and the number of collisions,and the average velocity of the particles is the largest and the number of collisions is the largest when the rotation speed is 90 r/min,which is conducive to the rapid coalescence and growth of the particles.
sinterfeedhigh shear granulationwet particlesdiscrete element method(DEM)
万方数据
维普
