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2412236 
Journal Article 
THE RECOVERY OF MANGANESE FROM THE BOLE PROJECT USING LEACHING, PRECIPITATION AND ELECTROLYTIC MANGANESE METAL PRODUCTION 
Glueck, T; Dreisinger, D; Lu, J 
2012 
157-168 
WOS:000325936000017 
The recovery of manganese from the Boleo project of Baja Mining is via an acid oxidation and acid reduction process in seawater. Manganese as manganese dioxide is leached into solution as manganese sulphate with the addition of sulphur dioxide gas as a reductant and then precipitated as a manganese carbonate. The use of the manganese carbonate intermediate to produce electrolytic manganese metal (EMM) has been extensively studied. The manganese carbonate can be used in place of natural (MnCO3) or reduced ores (MnO) of manganese as a feed to the EMM plant. Manganese carbonate can be dissolved in spent electrolyte from manganese plating, followed by purification using ammonium sulphide precipitation of minor elements and then electrowinning in a selenium free process. The results of small cell testing of manganese electrowinning are reported. 
Boleo; Manganese Carbonate; Manganese; Electrowinning