Method of recovering metals from ores using a formate reducing a

Details Method of recovering metals from ores using a formate reducing a Method of recovering metals from ores using a formate reducing a

1985-01-11

1986-08-19

Doll, John

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 2, 75108, 75115, 75119, 75117, 423 26, 423 36, 423 41, 423 42, 423 45, 423146, 423150, C22B 500

Patent

active

046067647

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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Considine, Van Nostrand's Scientific Encyclopedia, 6th ed. p. 1262.

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