Chlorination roasting of the cathode material contained in spent lithium-ion batteries to recover lithium, manganese, nickel and cobalt

GONZÁLEZ, YARIVITH C.; BARBOSA, LUCÍA I.; BARRIOS, ORIANA C.; OROSCO, PABLO

MINERALS ENGINEERING

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2022 vol. 176

0892-6875

Chlorination roasting was examined as an alternative method to recover lithium, manganese, nickel and cobalt as chlorides from the cathode material of spent lithium-ion batteries. The roastings were performed using chlorine as chlorinating agent. The effect of temperature and reaction time on the recovery of the metals was investigated performing non-isothermal and isothermal roasting assays. The non-isothermal roasting was studied from room temperature to 900 °C and the isothermal roastings were studied at temperature of 400 to 900 °C and reaction periods from 0 to 90 min. The experimental results showed that metals start to react with chlorine at different temperatures: lithium at 400 °C; manganese and nickel at 500 °C and cobalt at 600 °C. The extraction yield of all metals increased markedly with the increase in temperature. The roasting of the cathode material with chlorine at 900 °C for 90 min produced an extraction yield of 100% for all metals.