废旧动力电池破碎料立式风力分选试验研究

Experimental Study on Vertical Air Sorting of Spent Traction Battery Broken Materials

本文介绍了风力分选原理,分析了动力电池破碎产物的物料特性及影响分选效率的关键因素,采用实验室型立式风力分选机开展试验研究,考察了不同风速、物料形状及物料大小等因素对分选效果的影响。试验结果表明,风速为2.2 m/s时,片状物料的分选效果最好,卷曲变形后的隔膜无法与金属物分离;尺寸为20 mm×40 mm的物料中,轻质物与重质物的回收率均值最大,达96.4%,分选效果最佳。因此,风力分选工艺可以较好地实现电池破碎料中隔膜的预先分离。

This paper introduces the principle of air sorting,analyzes the material characteristics of the power battery crushed products and the key factors affecting the sorting efficiency,and uses a laboratory-type vertical wind sorter to carry out experimental research,and investigates the influence of different air speed,material shape and material size on the sorting effect.The test results show that when the air speed is 2.2 m/s,the separation effect of flake materials is the best,and the diaphragm after curling deformation cannot be separated from the metal;among the materials with a size of 20 mm×40 mm,the average recovery rate of light and heavy materials is the largest,reaching 96.4%,and the sorting effect is the best.Therefore,the air separation process can better realize the pre-separation of the diaphragm in the battery crushed material.