Research Progress in Pretreatment Technologies for Spent Lithium-Ion Battery Recycling AITranslate

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Chinese Library Classification Number:X705[环境科学与工程—环境工程]

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The widespread application of lithium-ion batteries(LIB)has led to the generation of massive spent batteries,triggering resource shortages and environmental risks.The recovery of high-value metals(e.g.,Co,Ni,Li)from these spent batteries is of significant economic and environmental significance.However,existing recycling technologies still face challenges in efficiency and sustainability.This paper re-views the latest research progress in pretreatment technologies for spent LIB recycling,covering discharge inactivation,disassembly and mechanical crushing,physical separation(such as eddy current separation,electrostatic separation,and gravity/wind separation),and binder removal.The literatures indicate that a key technical system—ranging from safe discharge treatment,automated disassembly and selective cru-shing for higher black mass recovery,and diversified physical separation for efficient component segrega-tion,down to binder removal which critically determines the efficiency of subsequent hydrometallurgy or flotation—could optimize the efficiency and sustainability of LIB recycling.Furthermore,this paper discus-ses the advantages and disadvantages of each pretreatment technology,along with the limitations and gaps of existing processes.It also outlines future research and industrialization directions,such as constructing a multi-stage integrated″discharge-crushing-screening-pyrolysis-separation″flowsheet to maximize recovery efficiency.This review provides a comprehensive reference for researchers and engineers in the LIB recy-cling field,emphasizing the critical role of pretreatment in building an efficient and environmentally sus-tainable battery circular industry.