Process for electrochemical decomposition of superalloys

Process for recovering valuable metals from super alloys comprises using an electrochemical treatment in which the electrolysis stream is subjected to a frequency of 0.005-5 Hz. Preferred Features: The super alloy contains cobalt (Co), nickel (Ni), chromium (Cr) or aluminum (Al) as the main componen...

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Bibliographic Details
Main Authors MICHAEL ERB, ARMIN OLBRICH, GERHARD GILLE, VIKTOR STOLLER, GEORG NIETFELD, JULIANE MEESE-MARTKSCHEFFEL, WOLFGANG MATHY
Format Patent
LanguageEnglish
Published 30.01.2004
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:Process for recovering valuable metals from super alloys comprises using an electrochemical treatment in which the electrolysis stream is subjected to a frequency of 0.005-5 Hz. Preferred Features: The super alloy contains cobalt (Co), nickel (Ni), chromium (Cr) or aluminum (Al) as the main component and tantalum (Ta), rhenium (Re), tungsten (W), molybdenum (Mo), hafnium (Hf) or platinum (Pt) as the secondary component. The super alloy preferably contains 1-10 wt.% Re. The electrolyte is an oxygen-free inorganic acid. The treatment is carried out using a voltage of 2-6 V with a constant electrolysis stream.
Bibliography:Application Number: HK20030108323