Method for the recovery of metallic copper

Details Method for the recovery of metallic copper Method for the recovery of metallic copper

1978-06-19

1979-04-24

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75101BE, 75108, 75115, 75121, 423 24, 423 41, C22B 1510

Patent

active

041509765

ABSTRACT:
An integrated process for the recovery of copper from impure copper bearing materials is provided by leaching the copper bearing material with sulfuric acid to convert the copper value to the soluble copper sulfate, selectively extracting the copper value from the leach liquor by contacting the liquor with an organic extractant stripping the copper from the organic copper extractant by contacting with liquor of enhanced acid content resulting from a subsequent reduction step, thus regenerating the organic extractant, contacting and thus reacting the acidified copper containing solution with an organic solution of amine extractant to reduce its acid concentration to a desired level, and recovering the copper metal by reacting the copper containing solution of lowered acid content with sulfur dioxide.

REFERENCES:
patent: 3676106 (1972-07-01), Hazen
patent: 3810827 (1974-05-01), Kane et al.
patent: 3848069 (1974-11-01), Carey et al.
patent: 3894139 (1975-07-01), Cardwell et al.
patent: 3933971 (1976-01-01), Baucom
patent: 3950488 (1976-04-01), Skarbo et al.
patent: 4006214 (1977-02-01), Moser et al.
patent: 4016056 (1977-04-01), DeMarthe et al.
patent: 4043882 (1977-08-01), Skarbo et al.
patent: 4051223 (1977-09-01), MacKay
patent: 4069119 (1978-01-01), Wong

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