Research and Optimization of Wear Evolution Law of High Pressure Roller Mill Based on Archard Model and DEM Simulation
When the high pressure roller mill is crushing the material,the squeeze and shear between the particles will cause the wear of the roller surface.Combined with the discrete element method(DEM)and Archard wear model,the surface mesh was divided,and the wear morphology of the high pressure roller mill stud was simulated accurately.The results showed that the wear simulation results were highly consistent with the measured results,that is,bowl-shaped wear occurred along the grinding roller,and the central area was the most serious.The optimization of the grinding roller structure and the feeding de-vice showed that the addition of a baffle at the end of the fixed roller could effectively solve the problem of uneven wear of the column nail and edge material leakage.The reduction of the wear dispersion coefficient(75%)and the increase of the material pressure in the extrusion zone(28%)were realized,which improved the grinding efficiency of the high pressure roller mill and the use efficiency of the studs.The research results provide ideas for optimizing the traditional high pressure roller mill.
high pressure roller milldiscrete element simulationdynamics and mechanismwear optimization