Back to results
US 2023/0250511 A1Published application
Recovery of nickel and cobalt from Li-ion batteries or their waste
AssigneeUmicore AG & Co. KG
InventorsRyohei YAGI, Lennart SCHEUNIS
Life of this patent
Estimating the term…
Abstract
The present invention lies in the field of pyrometallurgy and discloses a process and a slag suitable for the recovery of Ni and Co from Li-ion batteries or their waste. The slag composition is defined according to: This composition is particularly adapted to limit or avoid the corrosion of furnaces lined with magnesia-bearing refractory bricks.
Claims7
Li-containing metallurgical slag having a percent composition by weight according to:
- 10% < MnO < 40%;
- (CaO + 1.5*Li2O) / Al2O3 > 0.3;
- CaO + 0.8*MnO + 0.8*Li2O < 60%;
- (CaO + 2*Li2O + 0.4*MnO) / SiO2 ≥ 2.0;
- Li2O 1%;
- and,
- Al2O3 + SiO2 + CaO + Li2O + MnO + FeO + MgO > 85%.
4 more elements
Dependencies are inferred from the claim text.