The invention discloses a method for recovering valuable
metal from waste ternary
lithium-
ion battery
powder. Firstly, the waste ternary
lithium-
ion battery
powder is put into a pit furnace into whichoxygen is fed to be subjected to oxidizing
roasting, a roasted product is obtained, the content of carbon in the roasted product is reduced by 99% or above, then, the roasted product is dissolved inan
ammonia-
ammonium chloride solution system to be put into a reaction still, hydrazine
hydrate with the
volume fraction being 1.6% is added to serve as a
reducing agent, a pH value of an obtained lixivium is adjusted to be 8.00, according to the ratio of O / A being 2, the lixivium is added into an extraction agent, the
volume fraction of Versatic 911 is 20%, the
volume fraction of sulfonated
kerosene is 80%, the
reaction temperature is controlled to be 30 DEG C, 5 minutes later after the reaction,
raffinate and an organic phase are obtained through separation, and through 3 levels of counter-current extraction, the extraction rate of
cobalt is 98% or above. According to the method, adopted equipment is simple, the investment running cost is low, the process
energy consumption is remarkablyreduced, and the
recovery rate of the valuable
metal is high.