Abstract
The efficient and environmentally friendly recycling technology of waste lithium batteries has become a research hotspot, in which mechanical crushing is an important part of the recycling process. Through experimental methods, the compressive and impact properties of columnar lithium batteries were studied, and the crushing product characteristics and crushing efficiency of the single tear crushing method, single hammer crushing method, and two-step crushing method were investigated. The study shows that the two-step crushing method could achieve 100 % dissociation of all battery components, and the crushed products can be recycled according to their particle size distribution characteristics. The power consumption of the two-step crushing method was only 23.59 % of that of a single hammer crusher, and the reduction of carbon dust emission in the crushing process was as high as 76.29 %. The high crushing efficiency and environmentally friendly of the two-step crushing method are of great practical significance for the subsequent industrial promotion of waste battery recycling.
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