PROCEDIMIENTO PARA LA LIXIVIACION ELECTROQUIMICA DE ALEACIONES EN TRAZAS

• Main Authors: STOLLER VIKTOR, ERB MICHAEL, MATHY WOLFGANG, NIETFELD GEORG, OLBRICH ARMIN, GILLE GERHARD, MEESE-MARKTSCHEFFEL JULIANE
• Format: Patent
• Language: Spanish
• Published: 13.07.2003
• Edition: 7
• 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

EMPLEANDOSE LAS ALEACIONES EN TRAZAS COMO ANODO Y COMO CATODO, Y SE INVIERTE LA POLARIDAD DE LA CORRIENTE DE ELECTROLISIS CON UNA FRECUENCIA ENTRE 0,005 Hz Y 5 Hz. LAS ALEACIONES CONTIENEN Co, Ni, Cr o Al COMO COMPONENTES PRINCIPALES; Y Ta, Re, W, Mo, Hf o Pt COMO COMPONENTES SECUNDARIOS. LA LIXIVIACION SE LLEVA A CABO CON UNA CORRIENTE CONSTANTE ENTRE 2 V y 6 V, Y SE EMPLEA UN ACIDO INORGANICO LIBRE DE OXIGENO COMO ELECTROLITO 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.