A high-efficiency lithium-ion battery cathode electrode recycling system

Abstract

The invention discloses a high-efficiency lithium-ion battery positive pole piece recycling system, comprising a pulverizer, a primary vibrating screen, a refiner, a secondary vibrating screen, a tertiary vibrating screen, a wind separator and a plurality of collectors. A first Shakeron dust collector is connected through a pipeline between the outlet of the pulverizer and the inlet of the first-stage vibrating screen; the upper end of the wind separator is provided with a third Shakeron dust collector. The material port is connected with the dust discharge port of the third Shakeron dust collector through a pipeline, the upper end of the feed port of the pulverizer is provided with the fourth Shakeron dust collector, the discharge port of the refiner and the feed of the secondary vibrating screen A second Shakeron dust collector is connected between the ports. The present invention uses multiple Shakeron dust collectors and multiple vibrating screening devices to recycle materials, with good sealing performance, cleanliness and environmental protection, high battery recycling and processing efficiency, and precious metal recovery. It has the advantages of high efficiency and recovery rate, high purity of recycling classification, and small construction site for the recycling system of positive electrode pieces.

Description

technical field [0001] The invention relates to the technical field of recycling and reuse of positive electrode pieces of lithium ion batteries, in particular to a system for recycling and reusing positive electrode pieces of high-efficiency lithium ion batteries. Background technique [0002] Battery pole piece recycling refers to the collection of used batteries and pole piece scraps in the manufacturing process of lithium ion batteries to prevent them from entering the ecosystem and causing harm to the environment. Waste lithium ion battery positive pole piece black powder It contains a large amount of precious metals such as nickel, cobalt, lithium, manganese, etc. If it is discarded at will, it will not only cause serious waste of resources, but also pose a huge threat to our living environment. Most of the existing battery pole pieces are recycled through pulverizers. After the crushing treatment, it is first subjected to multi-stage crushing treatment, then is screen...

AI Technical Summary

Problems solved by technology

[0002] Battery pole piece recycling refers to the collection of used batteries and pole piece scraps in the manufacturing process of lithium-ion batteries to prevent them from entering the ecosystem and causing harm to the environment. Black powder of positive pole pieces of waste lithium-ion batteries It contains a large amount of precious metals such as nickel, cobalt, lithium, manganese, etc. If it is discarded at will, it will not only cause a serious waste of resources, but also pose a huge threat to our living environment. Most of the existing battery pole pieces are recycled through shredders After the crushing treatment, it first goes through multi-stage crushing treatment, then screens through multi-stage cyclone separators, and finally vibrates and screens through vibrating screening machines. Both the crushing equipment and the vibrating equipment are driven by conveyor belts. The patent publication number is CN112108377A discloses a battery crushing and sorting treatment process and its treatment equipment, which successively pass through the vibrating screen feeder, the first vibrating feeder, the coarse crusher, the second vibrating feeder, the sorting box, and the third cyclone The feeder, the fine crusher, the fourth cyclone feeder, the first gravity separator, the fifth cyclone feeder, the pulverizer, the extension machine and the second gravity separator are screened, and after grinding The materials after the machine include sundries, semi-finished aluminum with large particles, finished aluminum adhered to positive electrode black powder, aluminum powder and positive electrode black powder. The mixture is directly sieved by the gravity separator to sieve sundries, semi-finished aluminum, finished aluminum and aluminum powder adhered to positive electrode black powder, and it is impossible to achieve high-purity recovery of finished aluminum powder and positive electrode black powder, and there is no recycling system. The sundries are screened and processed, there are many equipments in the recycling system, the battery recycling efficiency of the recycling system is low, the recycling process is unreasonable, the recovery efficiency and recovery rate of precious metals are low, and the purity of recycling classification is low, and there are many impurities, so it needs to be enlarged construction site issues

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