Metal carbonate recycle to reduction circuit in the cuprion proc

Details Metal carbonate recycle to reduction circuit in the cuprion proc Metal carbonate recycle to reduction circuit in the cuprion proc

1975-11-03

1977-04-19

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 35, 423 53, 423 55, 423144, 423150, C01G 314, C01G 5112, C01G 5312

Patent

active

040188663

ABSTRACT:
A process in which copper, nickel, cobalt and molybdenum are recovered by direct leaching of comminuted raw manganese nodules after the nodules are reduced in a reduction circuit with an aqueous ammoniacal leach solution containing cuprous ions. An improvement is disclosed which results from recycling a portion of the metal values recovered back to the reduction circuit as a solid basic metal carbonate. The metal carbonate recycle enables the size of the reactors in the reduction circuit to be reduced. The recycle also increases the efficiency of the process by facilitating the solubilization of copper. Another aspect of the invention resides in the advantages of maintaining solubilized copper in amounts between 10 grams per liter and the solubility limit in the reduction circuit.

REFERENCES:
patent: 2625462 (1953-01-01), Fox
patent: 2647830 (1953-08-01), Allen et al.
patent: 2698220 (1954-12-01), Erskine
patent: 3734715 (1973-05-01), Redman
patent: 3751554 (1973-08-01), Bare et al.
patent: 3810971 (1974-05-01), Skarbo et al.
patent: 3832162 (1974-08-01), Smith
patent: 3853981 (1974-12-01), Hadzeriga

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