Electrolytic manganese metal production from ... ScienceDirect
Manganese metal is typically produced by the electrolysis of manganese and ammonium sulfate solution. The most commonly used technology involves reductive calcining to convert higher valent manganese oxides such as MnO 2, Mn 3 O 4, and Mn 2 O 3 to MnO . The calcine is subsequently leached in spent electrolyte from ...