Sulfide recycling in manganese production

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United States of America Patent

PATENT NO 10995413
APP PUB NO 20190003065A1
SERIAL NO

16121583

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Abstract

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A method of producing manganese metal or EMD by leaching a source of manganese with a solution comprising sulfuric acid to form a leach solution, adding one or more sulfides generated in a sulfide recycle stage to the leach solution in order to form sulfide precipitates comprising heavy metal sulfides, removing the sulfide precipitates from the leach solution, feeding the leach solution to one or more electrolytic cells, subjecting the purified leach solution to electrolysis so as to deposit manganese metal or EMD, reacting the sulfide precipitates with an acid to generate H2S, producing one or more sulfides from the H2S for recycle. Methods of producing manganese metal and a purified manganese sulfate solution are also provided.

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Patent Owner(s)

Patent OwnerAddress
KASAAIAN ARASH MLANDENBERG PA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kasaaian, Arash M Landenberg, US 2 9

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