In the eddy current separating process of spent Li-ion battery,the separating effect is not satisfactory due to the multitude of influencing parameters.To understand the impact of various parameters on the separating effect and improve the separation efficiency of eddy current separating method,a study is conducted on the eddy current separating of crushed products from spent lithium iron phosphate Li-ion battery.Using COMSOL simulation software,the alternating magnetic field distribution of the magnetic roller is simulated.A force model and motion model for the products in the alternating magnetic field are established.Factors such as magnetic roller length,number of magnetic poles,magnetic roller radius,feed speed,magnetic roller rotational speed,particle size and particle shape are studied for their influence on the separating effect.Friction factors on the conveyor belt are included in the simulated parameters to guide the establishment of the eddy current separating model.The above factors will affect the particles'trajectory,reducing friction factors is beneficial to improve separating efficiency.Particle size and shape are the primary influencing factors.
关键词
锂离子电池/COMSOL仿真模拟/废旧电池/涡流分选/交变磁场/输送带摩擦因数
Key words
Li-ion battery/COMSOL analogue simulation/spent battery/eddy current separating/alternating magnetic fields/belt friction factor
维普
万方数据