Electroleaching of polymetallic ocean nodules to recover copper, nickel and cobalt
Electroleaching of polymetallic ocean nodules to recover copper, nickel and cobalt
- Neue Suche nach: Kumari, A.
- Neue Suche nach: Natarajan, K.A.
- Neue Suche nach: Kumari, A.
- Neue Suche nach: Natarajan, K.A.
The key for successful and efficient dissolution of copper, nickel and cobalt from ocean nodules depends on prior reduction of the manganese and ferric oxides with which the above valuable nonferrous metals are interlocked. We have shown that through the application of negative reduction potential or DC current, significant reduction of manganic and iron oxides in the ocean nodules can be achieved, thus liberating the occluded copper, nickel, and cobalt for easy dissolution in an acid medium. Polarization studies using a slurry electrode system indicated that maximum dissolution of iron and manganese due to electrochemical reduction occurred at negative DC potentials of -600mV(SCE) and -1400mV(SCE). Electroleaching of the ocean nodules at the above negative applied DC potentials resulted in significant dissolution of copper, nickel and cobalt in 1M H2SO 4.
Dokumentinformationen
Electroleaching of polymetallic ocean nodules to recover copper, nickel and cobalt
Minerals Engineering ; 14 , 8 ; 877-886
2001
10 Seiten, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
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