Negative electrode crushing equipment for lithium battery

Negative electrode crushing equipment for lithium battery description

Lithium ion battery (hereinafter referred to as lithium battery) due to its high voltage, specific capacity, long life and no memory effect and other significant advantages, since its commercialization has quickly occupied the power source market of portable electronic and electrical equipment, and the output is increasing year by year lithium battery is electronic consumables, service life of about 3 years. Discarded after lithium batteries, such as handling, processing in its six fluoride phosphate lithium carbonate type of organic matter and heavy metals such as cobalt and copper will pose a potential pollution to the environment threat to alleviate the rapid economic development of dyeing problem increasingly serious shortage of resources and environment, to recycle waste materials to achieve full components has become a global consensus. Waste of lithium battery cathode copper content (about 35%) is a widely used important raw material of adhesive on the carbon powder, can be used as plastic rubber additives so on waste lithium battery cathode material composed of effective separation, achieve the high limit waste lithium battery recycling, eliminate the corresponding environmental impact has a role in promoting. The commonly used waste lithium battery treatment methods include wet ignition and mechanical physical method. Compared with wet ignition and mechanical physical method, mechanical physical method does not use chemical reagent, and has lower energy consumption. It is an environmentally friendly and efficient method. Based on the structural characteristics of lithium battery cathode, the company adopts the combination of crushing screening and airflow separation process to separate and screen the anode, so as to realize the separation and recovery of aluminum and carbon powder in the waste lithium battery anode.

Working principle of Negative electrode crushing equipment for lithium battery
Based on the structure of lithium battery anode plate and the material characteristics of copper cathode material, the separation and recovery experiment of waste lithium battery anode plate material was carried out by hammer vibration crushing vibration screening and airflow separation combination technology. Icp-aes analysis was used to analyze the metal grade of experimental samples and separation and enrichment products. The results showed that the grade of copper in the negative plate material with particle size greater than 0.250mm was 92.4% after crushing and sieving, and that in the negative plate material with particle size less than 0.125mm was 96.6%, which could be directly recovered. In the crushing material with particle size of 0.125~0.250 mm, the grade of copper is relatively low, which can be effectively separated and recovered from the negative electrode materials by airflow sorting. In the process of air flow separation, when the operating air flow velocity is 1.00m /s, the copper recovery rate reaches 92.3% and the grade reaches 84.4%.

Negative electrode crushing equipment for lithium battery flow

Scrapping the cathode piece into the shredding machine to shred, shredded after the cathode piece into special crusher for crushing, after crushing material into the preliminary sorting analysis machine, one of the metal and powder mixture into linear sieve sieve, upper out of copper, the lower the graphite powder, middle out of a mixture of copper and graphite powder, into the specific gravity separator for separating the mixture.

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