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SPECIAL
ALUMINIUM SMELTING INDUSTRY
or fans. This design allows minimised energy
consumption during operation down to the
necessary minimum amount as well as minimised
fluidisation air vented into the GTC’s
gas duct.
Conclusion
Fig. 7: Variable design of the Möller Fluidflow pipe air slide on top or inside
of the electrolysis cell
The necessary flexibility of a closed pot feeding
system to serve greenfield and brownfield
aluminium smelters had already to be considered
by FLSmidth Hamburg when the Möller
direct pot feeding system was introduced at
VAW in Hamburg in 1997, and at Aluminij
Mostar, Bosnia-Herzegovina in 2001. In particular,
the latest contracts for Emal Phase 2,
Abu Dhabi (greenfield), and Alcasa, Venezuela
(brownfield), have proven the system’s high
adaptability with great success.
This system is designed to ensure a constant
and a reliable feed into the ore bunkers
of the electrolysis cells at the highest possible
standard. The lowest
possible conveying
velocities preserve the
particle size distribution
as well as the flow
ability of the secondary
alumina without
any scaling effects.
This most competitive
system is superior by
minimising wear and
maintenance as well as
energy consumption,
and last but not least
Fig. 8: Self-closed filling spout and filling process of
the ore bunker
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