Low-temperature electrolysis of aluminum in a bath made of corundum high-alumina concrete

Low-cement high-alumina corundum concrete is tested as a lining material for the electrolysis of aluminum from the KF-AlF 3 -Al 2 O 3 melt at 750°C. From the results of a 100-h experiment, it was revealed that the process is stable with a rather high current efficiency. Concrete lining did not corro...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of non-ferrous metals 2009-04, Vol.50 (2), p.108-113
Main Authors: Chuikin, A. Yu, Zaikov, Yu. P.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum base alloys
Chemistry and Materials Science
Concrete
Concretes
Corundum
Electrolysis
Electrolytes
Lining (process)
Materials Science
Melts
Metallic Materials
Metallurgy of Non-Ferrous Metals
Nonferrous metals
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Low-cement high-alumina corundum concrete is tested as a lining material for the electrolysis of aluminum from the KF-AlF 3 -Al 2 O 3 melt at 750°C. From the results of a 100-h experiment, it was revealed that the process is stable with a rather high current efficiency. Concrete lining did not corrode during this time. The material under investigation does not significantly affect the quality of the obtained metal. Based on the results of a chemical analysis of the cathode metal before and after the experiments, the calcium and potassium content satisfies the requirements of GOST (State Standard) 11069-2001 for technically pure primary aluminum. The investigated high-alumina concrete can be suggested as a lining material in the design of an aluminum electrolyzer bath with a low-temperature potassium-containing electrolyte.
ISSN:1067-8212
1934-970X
DOI:10.3103/S1067821209020060