Method of recovering metals from ores using a formate reducing agent
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United States of America Patent
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Aug 19, 1986
Issued Date -
N/A
app pub date -
Jan 11, 1985
filing date -
Aug 17, 1983
priority date (Note) -
Expired
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Abstract
The invention comprises the treatment of metal oxides and mixed metal oxides and metal sulfides in a vertical tube reactor system having a downcomer section and a riser section in order to oxidize and dissolve the metal values in aqueous slurry primarily in the downcomer section and introducing a reducing agent comprising a formate species and reducing the dissolved metal values in the riser section. The reduced metal values are then separated with the gangue values from the product solution downstream from the vertical tube reactor system. The reduced metal values may then be separated from the gangue material by conventional solid separation techniques, such as flotation.
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