Waste lithium batteries feature complex compositions and sophisticated structures. Achieving safe dissociation and high-value sorting is impossible with single-stage crushing alone. Jiangxi Mingxin, a leader in R&D of waste lithium battery recycling equipment, has developed a stepped crushing process consisting of primary, secondary, and tertiary crushing. This progressive and precise treatment makes lithium battery crushing and sorting safer, more efficient, and more accurate, laying a solid technological foundation for resource recycling.
Primary Crushing is coarse crushing and dissociation. Adopting a low-speed, high-torque dual-shaft shredding structure, it easily breaks entire battery packs and large lithium batteries into regular lumps, realizing the initial separation of casings and internal cells. Equipped with an intelligent anti-jamming and material return function, it automatically protects against hard objects, eliminating equipment damage and operational safety hazards, and paving the way for subsequent fine processing.
Secondary Crushing is intermediate crushing and refinement. It performs deep crushing on coarsely crushed lumps, dissociating cells into small-particle-size materials to achieve the initial separation of pole pieces and separators. It strictly controls the uniformity of discharge particle size to avoid material agglomeration, while reducing frictional heating during crushing, minimizing explosion risks from the source and ensuring full-process operational safety.
Tertiary Crushing is fine crushing and precise dissociation. It further grinds intermediate crushed materials to the optimal particle size for sorting, enabling complete dissociation of cathode-anode powder from copper and aluminum foils without adhesion or residue. This greatly improves the efficiency and purity of subsequent magnetic separation and eddy current separation, helping achieve a copper-aluminum recovery rate ≥ 99% and a black powder recovery rate ≥ 90%, maximizing resource value.
Abandoning the extensive one-time crushing mode, Jiangxi Mingxin’s three-stage crushing process is tailored to the structural characteristics of lithium batteries through stepped design. It not only ensures operational safety and equipment stability throughout crushing but also provides high-quality raw materials for subsequent sorting, enabling seamless connection between crushing and sorting. It makes waste lithium battery recycling more efficient and valuable, injecting strong impetus into the green circular economy.
