Comprehensive recovery method of waste lithium battery positive electrode piece

A waste lithium battery and recycling method technology, which is applied in the field of comprehensive recycling of waste lithium battery positive plates, can solve problems such as difficulty in meeting the national standard requirements of ternary power batteries, affecting product purity and product performance, atmospheric environment, water environment pollution, etc. Achieve the effect of low processing cost, eliminate pollution, and eliminate three wastes
CN110144461AInactive Publication Date: 2019-08-20ZHUZHOU SMELTER GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUZHOU SMELTER GRP
Publication Date
2019-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a comprehensive recovery method of a waste lithium battery positive electrode piece. The method comprises the steps that a positive electrode leftover material and a wasted positive electrode piece are placed into a vacuum furnace to be calcinated, rapping and screening are conducted to obtain a positive active substance, the positive electrode active material is added to asulphuric acid leaching solution, second-stage leaching is conducted, and leached slag carbon and the leaching solution containing nickel, cobalt, manganese and lithium; activated carbon is added tothe leaching solution to perform adsorption deoiling and silica removing, nickel carbonate, cobalt carbonate, manganese carbonate or lithium carbonate is replenished to the filtered residue to obtainprecursors, ball milling, sintering, pulverizing, grinding and mesh screening are conducted on the precursors, and a nickel-cobalt-manganese-acid-lithium positive electrode material is obtained. The method has the advantages that the technology is reasonable, the separation cost is low, and there exists no pollution, toxin or harm.
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Description

technical field

[0001] The invention relates to the field of recycling and utilization of waste positive pole pieces of nickel-cobalt-manganese lithium batteries, in particular to a comprehensive recovery method for waste and old lithium battery positive pole pieces. Background technique

[0002] Lithium-ion batteries are a new generation of secondary batteries developed rapidly in the 1990s, and are widely used in small portable electronic communication products and electric vehicles. Since the service life of lithium-ion batteries is generally 3-5 years, it is predicted that by 2020, my country will produce 2.5 billion pieces, about 520,000 tons of waste new energy power batteries, and waste power batteries will provide at least 50% of the raw material supply. At the same time, new energy power batteries, as discarded electronic products, have been designated as hazardous waste by each country. Every part of the battery has potential hazards. If it is not handled properly,...

Claims

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