Complete-set device for recycling metal in waste lithium battery

Abstract

The invention provides a complete-set device for recycling metal in a waste lithium battery and belongs to the technical field of environmental protection. Materials such as lithium, cobalt, copper, nickel and light rare earth can be extracted from the waste lithium battery; the lithium battery recycling has huge potential commercial value and a broad prospect. According to the design, crushing pre-treatment is performed on the waste lithium battery firstly, feeding is performed, the waste lithium battery enters into a baking room for first baking, and then enters into a rotary incinerator for secondary combustion, three-time cooling is performed continuously and tail gas purification is performed, and smoke is discharged into air after reaching standards finally. During the process of smoke discharging, a rapid cooling device is used to enable the tail gas to be cooled so as to prevent dioxin from being produced. The heat quantity of a plate-type heat exchanger is adopted for recycling, and the purpose of recycling can be achieved.

Description

Technical field [0001] The invention relates to a complete set of equipment for recycling metals in waste lithium batteries. It belongs to the field of environmental protection technology. Background technique [0002] In 2011, my country's lithium-ion battery output was about 1.25 billion, becoming the world's largest producer and consumer of lithium-ion batteries. Lithium-ion batteries can generally be used for about 3 years. In 2012, the number of lithium-ion batteries discarded worldwide reached 1 billion. [0003] Lithium, cobalt, copper, nickel, light rare earth and other materials can be extracted from waste lithium-ion batteries. The recycling of lithium batteries has huge potential commercial value, and its recycling prospects are broad. In addition, the polluting components of waste lithium batteries, such as chlorofluorocarbons, halogen flame retardants, mercury, selenium, nickel, lead, chromium, etc., if not properly disposed of and directly landfilled or incin...

AI Technical Summary

Problems solved by technology

In addition, the polluting components of waste lithium batteries, such as chlorofluorocarbons, halogen flame retardants, mercury, selenium, nickel, lead, chromium, etc., if not properly disposed of and directly landfilled or incinerated, will cause pollution to the air, soil and water. serious pollution

[0004] In China, the recycling and processing methods of scrap lithium batteries are the same as most other electronic wastes. They are landfilled, incinerated, and composted together with urban domestic waste. This simple lithium battery disposal method has had a serious impact on the natural environment.

Since lithium batteries contain a large amount of lithium hexafluorophosphate (LiPF 6 ) organic carbonate electrolyte, LiPF 6 It is highly corrosive and easily reacts with water to generate HF toxic gas, while other toxic and harmful substances in lithium batteries such as DME (methoxyethane), methanol, formic acid, etc. are directly contacted with the atmosphere, soil and water Contact will pollute it, which will harm the human ecosystem environment

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