skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Anode film formation and control

Abstract

A protective film is created about the anode within a cryolite-based electrolyte during electrolytic production of aluminum from alumina. The film functions to minimize corrosion of the anode by the cryolitic electrolyte and thereby extend the life of the anode. Various operating parameters of the electrolytic process are controlled to maintain the protective film about the anode in a protective state throughout the electrolytic reduction of alumina. Such parameters include electrolyte temperature, electrolyte ratio, current density, and Al[sub 2]O[sub 3] concentration. An apparatus is also disclosed to enable identification of the onset of anode corrosion due to disruption of the film to provide real time information regarding the state of the film. 3 figs.

Inventors:
;
Issue Date:
OSTI Identifier:
7022079
Patent Number(s):
4921584 A
Application Number:
PPN: US 7-116560
Assignee:
Battelle Memorial Inst., Richland, WA (United States)
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 3 Nov 1987
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ALUMINIUM OXIDES; ELECTROLYSIS; ANODES; CORROSION PROTECTION; PROTECTIVE COATINGS; ELECTROLYTIC CELLS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; COATINGS; ELECTRODES; LYSIS; OXIDES; OXYGEN COMPOUNDS; 320303* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes

Citation Formats

Koski, O, and Marschman, S C. Anode film formation and control. United States: N. p., 1990. Web.
Koski, O, & Marschman, S C. Anode film formation and control. United States.
Koski, O, and Marschman, S C. Tue . "Anode film formation and control". United States.
@article{osti_7022079,
title = {Anode film formation and control},
author = {Koski, O and Marschman, S C},
abstractNote = {A protective film is created about the anode within a cryolite-based electrolyte during electrolytic production of aluminum from alumina. The film functions to minimize corrosion of the anode by the cryolitic electrolyte and thereby extend the life of the anode. Various operating parameters of the electrolytic process are controlled to maintain the protective film about the anode in a protective state throughout the electrolytic reduction of alumina. Such parameters include electrolyte temperature, electrolyte ratio, current density, and Al[sub 2]O[sub 3] concentration. An apparatus is also disclosed to enable identification of the onset of anode corrosion due to disruption of the film to provide real time information regarding the state of the film. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {5}
}