Fluid Flow and Bubble Behavior in the Aluminum Electrolysis Cell

Abstract

A full scale water model was established to investigate the phenomena in aluminum reduction cells. the behavior of bubbles under the anode is analyzed by both directly observation and camera recording. Bubble under the anode has a thick bubble front and a thin, long trail portion. with 0o tilted angle, hardly can the bubbles move forward, but form a gas film under the anode. with non-zero tilted angle, bubble motion under the anode is driven by the buoyancy force, thus bubbles are easy to escape through the curved end of the anode. LDV was used to investigate the fluid flow pattern. the LDV measurements reveal a recirculation flow pattern in side channel, similar to the observation of the tracer dispersion. Larger tilted angle and larger gas flow rate generate larger velocity and bigger turbulent energy, especially in the region close to the end of the anode and the top surface.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Aluminum electrolysis cell; Bubbles; Fluid flow; LDV measurement; Water modeling

International Standard Book Number (ISBN)

978-087339735-3

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 The Minerals, Metals & Materials Society, All rights reserved.

Publication Date

24 Jun 2009

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