Metal material recycling device and method for recycling lithium iron phosphate

Abstract

The application provides a metal material recycling device and a method for recycling lithium iron phosphate. It relates to the field of metal material recycling. The metal material recycling device comprises a leaching tank placed on the ground by a support. The metal material recycling device provided by the application drives the fan blades to lift by the air cylinder, realizes the effect of fully mixing the metal material and water at different levels, effectively breaks the stratification, guarantees the uniformity of the slurry, and improves the leaching efficiency of lithium, phosphorus and iron in the waste lithium iron phosphate positive electrode material through the synergistic effect of sulfuric acid and hydrogen peroxide in the oxidation leaching process. The oxidation leaching liquid and the oxidation leaching residue are separated by the first filter screen, and then the oxidation leaching liquid is filtered twice by the second filter screen to avoid omission, ensure the purity of the oxidation leaching liquid, and realize the efficient recovery of lithium, phosphorus and iron in the leaching residue. When the residue is discharged, the fan blades attached to the lower cover are used to collect the residue manually, realize the efficient recovery of lithium, phosphorus and iron in the leaching residue, realize the full mixing, complete leaching and full separation of solid and liquid, and improve the metal material recycling rate.

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