PROCESS AND APPARATUS FOR CORRECT FILLING AND CONTROLLING CORRECT DOSES OF ALUMINA FOR ELECTROLYZING FURNACE OF HOT PROCESS, AND PROCESS FOR PRODUCING ALUMINIUM

A process and apparatus for controlling the rate of introduction and the content of alumina to a tank for the production of aluminium by the electrolysis of dissolved alumina in a cryolite-base bath, the upper part of which forms a solidified crust, and wherein the alumina content is maintained with...

Full description

Saved in:
Bibliographic Details
Main Authors LANGON,BERNARD,FR, HOMSI,PIERRE,FR, GERPHAGNON,JEAN-LOUIS,FR, KEINBORG,MAURICE,FR, BONNY,PAUL,FR, LABOURE,GERARD,FR
Format Patent
LanguageEnglish
Published 28.12.1985
Edition4
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
Online AccessGet full text

Cover

More Information
Summary:A process and apparatus for controlling the rate of introduction and the content of alumina to a tank for the production of aluminium by the electrolysis of dissolved alumina in a cryolite-base bath, the upper part of which forms a solidified crust, and wherein the alumina content is maintained within a narrow range, of between 1% and 3.5%, wherein the alumina is introduced directly into the molten cryolite bath by way of at least one opening which is kept open in the solidified crust and the rate at which the alumina is introduced is modulated relative to variations in the internal resistance of the tank during predetermined periods of time, with alternation of the cycles of introducing alumina at a slower rate and at a faster rate than the rate corresponding to normal consumption within the tank.
Bibliography:Application Number: HU19810002155