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Patent Searching and Data


Title:
RECOVERY OF VALUABLE METALS FROM SUPERALLOY SCRAP
Document Type and Number:
Japanese Patent JPS58217646
Kind Code:
A
Abstract:
A method for recovering superalloy scrap is disclosed. The method involves oxidizing superalloy scrap in an aqueous acidic medium. The aqueous acidic medium has an oxidation potential sufficient to oxidize nonferrous additive superalloy elements to insoluble oxides thereof and to oxidize major superalloy constituents to aqueously soluble species. The insoluble solids from the aqueous solution are separated when the aqueous solution is extracted with an aqueously substantially insoluble tertiary amine to form an organic phase and an aqueous phase. The aqueous phase contains essentially nickel and chromium values. The organic phase is sequentially extracted with aqueous solutions which selectively solubilize individual metal value species to form individual aqueous solutions having substantially single metal value species therein. The metal value species solutions are processed to obtain substantially pure metals.

Inventors:
DAGURASU JIEI ROBINSON
ANIIDEI OO ETSUTE
Application Number:
JP8990983A
Publication Date:
December 17, 1983
Filing Date:
May 21, 1983
Export Citation:
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Assignee:
UNIVERSITY PATENTS INC
International Classes:
C01G1/00; C01G37/14; C01G39/00; C01G49/00; C01G51/00; C01G53/06; C22B3/28; C22B7/00; C22B34/32; C22B34/34; (IPC1-7): C22B5/02