The invention discloses a hydrodynamic separation and wet stripping process for waste
lithium ion battery broken materials. The process comprises the following steps of firstly, carrying out crushing and
electrolyte low-temperature volatilization or
organic matter pyrolysis pretreatment on a waste battery, carrying out hydrodynamic separating on the treated crushed materials to separate out shells, then carrying out one-stage or multi-stage soaking on a sample by using a nucleophilic
reagent, due to the fact that the nucleophilic
reagent can chemically react with PVDF or aluminum and
copper, some reagents can dissolve the PVDF or the aluminum and the
copper, therefore, completely stripping and separating leached pole
powder from the
copper, the aluminum and the like, and improving the
recovery rate and grade of the pole
powder. According to the process, hydrodynamic force is adopted for efficient and clean pre-sorting of substances such as diaphragms, pole pieces and the shells, the separation effect is greatly improved compared with the prior art, and meanwhile the risks of dust raising,
powder explosion and aluminum explosion of traditional
wind power winnowing are avoided. The pole powder of the waste
lithium ion battery is stripped by adopting a nucleophilic
reagent leaching method, the pole powder falling effect is obvious, and the pole powder
recovery rate and grade are high.