d. Aluminum reduction by the electrolytic process is shown in Figure 2-10. The
removal of oxygen from alumina is performed electrolytically; large amounts of
electric power, carbon, cryolite, and alumina are required to produce aluminum.
(1) Major
recognition
features
of
aluminum
reduction
(electrolyte
process)
(Figure 2-10):
(a) Substation.
Connected to rectifier building by heavy copper bus bars
(Annotation 1).
(b) Rectifier building.
Long, single-story structure (Annotation 2).
(c) Carbon electrode and paste plant.
Small with roof vents and a stack,
dark appearance (Annotation 8).
(d) Large and small storage silos (Annotations 4 and 5).
(e) Pot
lines/rooms.
Long
series
within
narrow,
vented
buildings
(Annotation 3).
(f) Casting building (Annotation 6).
(g) Fluorine recovery units will be small boxlike objects located between
pot lines and connected to them by pipes.
Figure 2-10. Aluminum Reduction-Electrolytic Process.
IT 0673
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