Recycling method of waste lithium battery material

The invention discloses a recycling method of a waste lithium battery material. The recycling method comprises the following steps: S1, extracting battery black powder by adopting acid; s2, adding iron powder to remove copper; s3, adding an oxidizing agent; s4, adding an extracting agent A, and extracting calcium and zinc to obtain raffinate; s5, an extracting agent P507 is added into the raffinate obtained in the step S4, cobalt and nickel are extracted, and raffinate containing manganese, magnesium and lithium is obtained; s6, an extracting agent Cy-272 is added into the raffinate obtained in the step S5, nickel and magnesium are extracted, and raffinate containing lithium is obtained; s7, adding caustic soda liquid into the raffinate obtained in the step S6, carrying out filter pressing, concentration and crystallization, and carrying out centrifugal separation to obtain anhydrous sodium sulfate and centrifugal mother liquor; cooling the centrifugal mother liquor, filtering, adding sodium carbonate into th