Efficient dissociation and sorted collection method for each component of waste lithium ion batteries

Abstract

The invention discloses an efficient dissociation and sorted collection method for each component of waste lithium ion batteries. The efficient dissociation and sorted collection method comprises the following steps: (1) discharge treatment of the waste lithium batteries: discharging the waste lithium ion batteries to obtain uncharged waste lithium batteries, and laying a foundation for subsequent treatment process; (2) pyrolysis treatment of the whole pieces of the lithium batteries: carrying out pyrolysis treatment on the discharged waste lithium batteries, realizing decomposition removal of an electrolyte, a diaphragm and a binder, then realizing sufficient dissociation of an electrolyte material and electrode slices, and further realizing recycling of an organic pyrolysis liquid through a condensation method; (3) crushing dissociation: putting the lithium batteries after pyrolysis into a crushing machine for crushing to realize shredding of battery shells, crushing of the electrode slices and falling of the electrode material; and (4) sieving treatment: obtaining a fine-sized electrode material, medium-sized electrode slices and large-sized shells through a sieving method according to the difference of each component in the lithium batteries in particle size.

Description

technical field [0001] The invention relates to the technology in the field of waste battery recycling, in particular to a method for efficient dissociation and classification recovery of components of waste lithium ion batteries. Background technique [0002] In recent years, with the replacement of electronic products such as mobile phones, laptops, and cameras, a large number of waste lithium batteries have also appeared in people's daily life. The efficient recycling of waste lithium batteries can not only obtain high-value cobalt, lithium, etc. Metals can also solve a series of environmental problems caused by waste lithium batteries. [0003] In the recycling process of waste lithium-ion batteries, the efficient dissociation and sorting and recycling of various components are the key technical links. In the above, simple mechanical crushing cannot completely remove the electrode material, causing a large amount of electrode material to adhere to and remain on the elec...

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Problems solved by technology

[0004] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a method for efficient dissociation and classification recovery of components of waste lithium-ion batteries, which can realize high-efficiency pyrolysis and dissociation of components of waste lithium-ion batteries, And through the method of combining mechanical crushing and screening, the classification and recovery of groupings can be realized, which overcomes the problems of complicated sorting process and low recovery efficiency in the prior art

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