Hydrometallurgical processing of manganese containing materials

Details Hydrometallurgical processing of manganese containing materials Hydrometallurgical processing of manganese containing materials

2011-05-31

2011-05-31

Phasge, Arun S (Department: 1724)

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Preparing inorganic compound

C205S540000, C205S541000, C205S542000

Reexamination Certificate

active

07951282

ABSTRACT:
A process for the hydrometallurgical processing of manganese containing materials, the process characterized by the combination of a manganese dioxide containing feedstock and an acidic solution to form an acidic solution to be leached, and passing a volume of sulphur dioxide gas through that leach solution as the leaching agent, whereby no sintering or roasting pre-treatment step of the feedstock is undertaken and the levels of dithionate ion generated in the leach solution are less than about 5 g/l. Also described is a process for the production of electrolytic manganese dioxide.

REFERENCES:
patent: 3301777 (1967-01-01), Leonard
patent: 3438878 (1969-04-01), Brown et al.
patent: 5932086 (1999-08-01), Kasaaian
patent: 3211658 (1983-10-01), None
patent: WO 98/14623 (1998-04-01), None

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