Title: Method of extraction of metallic elements from submarine nodules

Abstract: A hydrochloric acid leach solution is subjected to a first cycle of extraction by an organic solvent, solvent washing and stripping so that the stripping liquor contains iron, zinc, cadmium and gallium while the liquor constituted by the first raffinate at the outlet of the extraction unit mainly contains nickel, cobalt and copper. In a second extraction cycle, the stripping liquor contains copper while the second raffinate mainly contains cobalt and nickel. In a third extraction cycle, the stripping liquor contains cobalt while the third raffinate mainly contains nickel.

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Inventors: Barriere, Jacques (Fontenay-aux-Roses, FR)
Robaglia, Michele (Orsay, FR)

Application Number: 641238
Filing Date: 1975-12-16
Publication_date: 1976-10-26
Assignee: Commissariat a l'Energie Atomique (Paris, FR)
Primary Class(es): 205/581 205/590, 205/618, 423/24, 423/50, 423/54, 423/63, 423/100, 423/105, 423/112, 423/129, 423/139, 423/592.1, 423/DIG4
Other Classes:
US Patent Ref:

2937072	May, 1960	McLean	423/63.
3085054	Apr, 1963	Thornhill	204/113.
3151946	Oct, 1964	Naguno et al.	423/139.
3446720	May, 1969	Brooks	204/112.
3734715	May, 1973	Redman	75/103.
3751554	Aug, 1973	Bare et al.	423/150.
3880651	Apr, 1975	Queneau et al.	423/50.
3887679	Jun, 1975	Wigstol et al.	423/24.
3950486	Apr, 1976	Cardwell et al.	423/38.
3950488	Apr, 1976	Skarbo et al.	423/24.

Other Refs:
Primary Examiner: Vertiz, Oscar R.
Assistant Examiner: Hearn, Brian E.
Attorney: Woodward; William R.