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

Patent · Tue Jan 01 04:00:00 EST 2002

OSTI ID:874347

Ray, Siba P ^[1]; Liu, Xinghua ^[2]

---

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 CoO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and CoO: 0.15 to 0.99 NiO; 0.0001 to 0.85 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.45 CoO. 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 6372119
• OSTI ID: 874347
• Country of Publication: United States
• Language: English

Related Subjects

/205/204/501/502/
00001
015
045
085
099
aluminum
andor
anode
baths
cell
ceramic
ceramic material
cobalt
composition
containing
coo
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