The invention discloses a recycling process of positive
electrode materials of waste batteries. The recycling process includes the steps of completely discharging the waste
lithium batteries, subjecting the waste
lithium batteries to primary crushing under
inert gas protection, removing diaphragm paper through air classification after crushing, performing low-temperature
pyrolysis, respectively removing iron materials and aluminum materials through sorting, performing re-pulverization to obtain
electrode powder, determining a flotation
reagent system according to the
phase composition of the
electrode powder, performing flotation in a flotation tank, and filtering and
drying products at the bottom of the flotation tank to obtain the positive electrode materials; according to the Li / M ratioof the positive electrode materials, calculating the
lithium source
powder to be added, and mixing water-soluble dispersants and the lithium source powder with water to form a
mixed solution; addingthe positive electrode materials to be repaired into the
mixed solution, performing cooking activation at a high temperature and under
high pressure, continuing to dry the product under normal pressure to obtain uniform mixture powder, and calcining the mixture powder under an aerobic condition to obtain the regenerated and repaired
lithium ion battery positive electrode materials. The recycling process has the advantages of low repair cost,
high activity after repair, and higher promotion and application value.