2 results about "Battery recycling" patented technology

The invention provides a system for continuously recycling a waste ternary lithium-ion battery and belongs to the technical field of recycling of lithium-ion batteries. The system comprises a pre-treatment unit, an acid leaching unit, a primary impurity removal unit, a co-precipitation unit, a secondary impurity removal unit and an ammonia recycling unit, wherein the pre-treatment unit comprises apulverizer, a pulse dust collection device, a positive and negative electrode powder cabin and a separation machine; the acid leaching unit comprises a leaching reaction kettle and a micro-filteringmachine I; the primary impurity removal unit comprises an impurity removal reaction kettle and a squeezing machine; the co-precipitation unit comprises a material preparation kettle, a co-precipitation reaction tank and a centrifugal machine; the secondary impurity removal unit comprises a secondary impurity removal reaction kettle and a micro-filtering machine II; the ammonia recycling unit comprises a heater, an evaporation crystallization device, a condenser and an ammonia liquid receiving tank. The invention further provides a technology for continuously recycling the waste ternary lithium-ion battery by utilizing the system. According to the system provided by the invention, a prepared nickel-cobalt-manganese ternary material precursor has high purity and large tap density; grains have a small grain diameter and narrow distribution and are uniformly mixed; a lithium sulfate solution can be directly used for producing lithium carbonate.

The invention relates to the technical field of battery recovery, in particular to a lithium iron phosphate battery crushing device and method. Comprising a crushing box; a hammering unit is rotationally connected to the position, close to a port in one end, of the inner wall of the crushing box, and a returning unit is rotationally connected to the position, close to a port in the other end, of the inner wall of the crushing box; the material returning unit comprises a second transmission rod; the second transmission rod is rotationally connected to the inner wall of the end, away from the hammering unit, of the smashing box, and the central axes of the two coincide. A second turntable is mounted on the second transmission rod; a plurality of sets of rotary table extension rods are distributed on the side wall of the second rotary table in an annular array mode, filter screen installation rods are installed at the other ends of the rotary table extension rods, and the other ends of the filter screen installation rods horizontally extend in the direction of the material hammering unit. Waste lithium iron phosphate battery fragments large in size are rebounded through the inner wall of the filter hopper for secondary smashing, and the smashing quality is improved.