Process for recovering nickel and cobalt from li-ion batteries or their waste

Abstract

This slag composition belongs to the field of metallurgy and refers to the appropriate process and slag for recovering Ni and Co from lithium-ion batteries or their waste. The slag composition is defined as follows: 10% < MnO < 40%; (CaO + 1.S *LiO) / Li2O3 > 0.3; Ca + 0.8 *MnO + 0.8 *LiO < 60%; (CaO + 2 *LiO + 0.4 *MnO) / SiO1 > 2.0; Li2O > 1%; and, AlO1 + SiO1 + CaO + LiO + MnO + FeO + MgO > 85%. This composition is particularly suitable for limiting or preventing corrosion of furnaces lined with refractory bricks containing magnesium oxide.