Inert anode containing oxides of nickel, iron and zinc useful for the electrolytic production of metals

Patent · Tue Jan 01 04:00:00 EST 2002

OSTI ID:874610

Ray, Siba P ^[1]; Liu, Xinghua ^[2]

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1. Murrysville, PA
2. Monroeville, PA

An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and ZnO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and ZnO: 0.2 to 0.99 NiO; 0.0001 to 0.8 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.3 ZnO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.

• Research Organization: Alcoa Technical Center/Aluminum Company of America (US)
• DOE Contract Number: FC07-98ID13666
• Assignee: Alcoa Inc. (Pittsburgh, PA)
• Patent Number(s): US 6423195
• OSTI ID: 874610
• Country of Publication: United States
• Language: English

Related Subjects

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aluminum
andor
anode
baths
cell
ceramic
ceramic material
composition
containing
disclosed
electrolytic
exhibits
fesub2
following
fractions
inert
inert anode
iron
material
metal
metals
mole
ni--fe--co--o
nickel
nio
optionally
osub3
oxide
oxides
pd
phase
produce
production
ru
solubility
useful
zinc
zno