Lithium-Ion Spent Battery Dismantling

Core Process Principle

The entire equipment uses a purely physical dry process, adding no acid, alkali, or organic solvents, and through the combined action of "cutting and tearing pre-treatment + enclosed powerful stripping + air classification + vibrating screening + cyclone collection + bag dust collection", directionally destroys the adhesion of the binder inside the electrode sheets, causing the brittle active powders of lithium iron phosphate, ternary, graphite, etc. to detach from the tough copper foil / aluminum foil surfaces. Multi-stage sorting then achieves high-purity separation of the black mass.

Process Flow

The entire production line operates under fully enclosed negative pressure and is divided into 6 core progressive stages:

Pre-treatment cutting and tearing: Through a cutter-tearer, large electrode sheets are cut into uniform 3 cm small pieces, paired with a uniform feeder to achieve stable, metered feeding and avoid clogging.

Core stripping: The material enters the stripping host, where high-speed impact and frictional rubbing complete deep powder removal, detaching the active black mass from the copper/aluminum foil surfaces.

Copper / aluminum foil vibrating screening: Among the mixed material after stripping, the lighter black mass enters the subsequent multi-stage series air classification process with the airflow, while the heavier metal components such as copper/aluminum foil are conveyed by the screw at the bottom of the stripping machine into the vibrating screen for screening separation. The incompletely stripped material on the screen can flow back to the stripping host for multi-stage re-stripping.

Multi-stage series air classification: Depending on actual conditions, multiple classifiers can be set up in series, relying on the synergy of centrifugal force and airflow to separate high-purity fine black mass from copper/aluminum foil coarse particles by particle size. Unqualified coarse particles automatically flow back for re-stripping, and multi-stage classification further improves separation precision.

Enclosed powder collection and conveying: Qualified black mass is conveyed fully enclosed throughout via a cyclone collector and negative-pressure piping, fundamentally preventing dust escape and secondary material contamination.

Eco-friendly dust collection: The production exhaust gas is deeply purified by a pulse-jet bag dust collector before being stably discharged up to standard.