Encyclopedie de la recherche sur l'aluminium au Quebec - Edition 2014 | Página 33

PRODUCTION DE L’ALUMINIUM // ALUMINIUM PRODUCTION
Ledge Formation under the
Consideration of its Interaction with
ÉTUDE DE L'INTERACTION
Bath Composition and the FluidDE LA COUCHE DE GELÉE AVEC LA
COMPOSITION DU
Dynamic MotionBAIN ET LE MOUVEMENT FLUIDE DYNAMIQUE

31

LEDGE FORMATION UNDER THE CONSIDERATION OF ITS INTERACTION
WITH BATH COMPOSITION AND THE FLUID DYNAMIC MOTION

Min Li1, Hicham Chaouki1, Jean-Loup Robert1,
Donald Ziegler2 et Mario Fafard1
1

Department of Civil and Water Engineering, Laval University
2 Alcoa Primary Metals, Alcoa Technical Center

Introduction

Highlights

As a layer of protecting lining, the ledge made of frozen
electrolyte forms at the early stage of a new cell, as shown
in Fig.1. This formation process is not only determined by
but also exerting an impact on the following three aspects:
thermal behavior, bath composition and fluid motion
inside the cell. This is a multi-phase coupled problem.

• Freezing point is a function of content