Electrochemical dissolution process for disintegrating superalloy scraps

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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Main Authors STOLLER, VIKTOR, OLBRICH, ARMIN, GILLE, GERHARD, ERB, MICHAEL, MEESE-MARKTSCHEFFEL, JULIANE, NIETFELD, GEORG, MATHY, WOLFGANG
Format Patent
LanguageEnglish
French
German
Published 08.10.2003
Edition7
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
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: EP20020024908