Izvorni znanstveni članak
Minimum and Full Fluidization Velocity for Alumina Used in the Aluminum Smelter
Paulo Douglas S. de Vasconcelo
; Albras - Alumínio Brasileiro S/
André L. Amarante Mesquita
; Federal University of Par
Sažetak
Fluidization is an engineering unit operation that
occurs when a fluid (liquid or gas) ascends through a bed
of particles, and these particles get a velocity of minimum
fluidization
Vmf enough to stay in suspension, but without
carrying them in the ascending flow. As from this moment
the powder behaves as liquid at boiling point, hence the
term “fluidization”. This operation is widely used in the
aluminum smelter processes, for gas dry scrubbing (mass
transfer) and in a modern plant for continuous alumina
pot feeding (particles’ momentum transfer). The
understanding of the alumina fluoride rheology is of vital
importance in the design of fluidized beds for gas
treatment and fluidized pipelines for pot feeding.
This paper shows the results of the experimental and
theoretical values of the minimum and full fluidization
velocities for the alumina fluoride used to project the
state of the art round non‐metallic air‐fluidized conveyor
of multiples outlets.
Ključne riječi
Fluidized bed; Minimum fluidization velocity; Permeameter; Maximum pressure drop
Hrčak ID:
76923
URI
Datum izdavanja:
15.11.2011.
Posjeta: 4.728 *