Solvent-in-pulp extraction of copper and nickel from ammoniacal

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal

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473 32, 473139, 473150, 75101BE, C01G 300, C01G 5100, C22B 300

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039504875

ABSTRACT:
A process in which copper, nickel, cobalt and molybdenum are recovered by leaching comminuted raw manganese nodules with an aqueous ammoniacal leach solution containing cuprous ions. An improvement is disclosed in which the metal values are extracted directly from the leach slurry with an organic extractant. To accomplish such extraction the amount by weight of solids in the slurry is maintained at less than 20 percent, the pH of the slurry is lowered to 9.5, the volumes of slurry and organic are maintained at a ratio so that the organic is the continuous phase and the organic and slurry are mixed with gentle agitation.

REFERENCES:
patent: 3206288 (1965-09-01), Hazen et al.
patent: 3224873 (1965-12-01), Swanson
patent: 3743585 (1973-07-01), Lowenhaupt et al.
patent: 3761249 (1973-09-01), Ritcey et al.
Ritcey, "Solvent-in-Pulp processing using sieve plate pulse columns" Chemistry and Industry 6 Nov. 1971 pp. 1294-1299.
Proceedings of the Second United Nations International Conference on the Peaceful Uses of Atomic Energy; United Nations, Geneva 1958, Vol. 3 pp. 499-501.

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