The invention discloses a
lithium battery positive
electrode material recovery method. The method comprises the following steps: soaking in an alkaline solution, namely soaking a positive
electrode plate of a waste
lithium battery positive
electrode material in a container filled with the alkaline solution; hydrolyzing, namely placing mixed liquid of an aluminum
hydroxide solution obtained in former step and
lithium cobalt oxide powder in pure water, hydrolyzing and then performing water screening and washing; carrying out
hydrogen treatment, namely placing the
lithium cobalt oxide powder treated through step a and b in an
atmosphere furnace, then inflating the
hydrogen in the furnace, heating at high temperature; hydrolyzing to remove lithium, namely placing the hydrogenated
lithium cobalt oxide in the pure water to hydrolyze; carrying out
solid-liquid separation, namely performing
solid-liquid separation on the hydrogenated
lithium cobalt oxide, and washing the separated
solid for three times,
drying,
grinding to obtain
cobalt oxide. The
cobalt oxide as the positive
electrode material is recovered by using the method of soaking in the alkaline solution, hydrolyzing,
hydrogen treating,
hydrolysis for lithium removal and solid-liquid separation; the
recovery cost is low, the recovered
cobalt oxide has few impurities, and is high in purity and good in effect.