METHOD FOR PRODUCING LITHIUM SULFIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing lithium sulfide excellent in industrial production, capable of obtaining high-purity lithium sulfide.SOLUTION: A method for producing lithium sulfide is a method for producing lithium sulfide by reducing lithium sulfate. To put it concretely, the method includes two following steps: (1) a micronizing step for adjusting powder containing lithium sulfate into fine particles having a particle diameter dof ≤50.0 μm in a weight-based particle size distribution by a laser diffraction scattering particle size distribution measuring method; and (2) a reducing step for obtaining lithium sulfide by reducing obtained fine particles containing lithium sulfate.