Leaching of Valuable Metals from Roasted Residue of Spent Lithium-ion Batteries with Ammonium Sulfate
从硫酸铵焙烧废旧锂离子电池产物中浸出有价金属

Spent lithium-ion batteries(LIBs) blended with ammonium sulfate were roasted at elevated temperature.The effects of pH value of sulfuric acid leaching solution,roasting temperature and amount of ammonium sulfate on leaching rates of metal elements were investigated.Roasted residue was also leached with a mixed solution containing ammonia and ammonium sulfate.The results showed that all of lithium could be leached out.Due to the metallic copper in the roasting residue,the leaching rate of copper only reached...