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Title: Aluminum reference electrode

Abstract

A stable reference electrode is described for use in monitoring and controlling the process of electrolytic reduction of a metal. In the case of Hall cell reduction of aluminum, the reference electrode comprises a pool of molten aluminum and a solution of molten cryolite, Na[sub 3]AlF[sub 6], wherein the electrical connection to the molten aluminum does not contact the highly corrosive molten salt solution. This is accomplished by altering the density of either the aluminum (decreasing the density) or the electrolyte (increasing the density) so that the aluminum floats on top of the molten salt solution. 1 fig.

Inventors:
Issue Date:
OSTI Identifier:
7067429
Patent Number(s):
4764257 A
Application Number:
PPN: US 6-783776
Assignee:
Massachusetts Inst. of Tech., Cambridge, MA (United States) PTO; EDB-94-118383
DOE Contract Number:  
FG07-83ID12380
Resource Type:
Patent
Resource Relation:
Patent File Date: 3 Oct 1985
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ALUMINIUM COMPOUNDS; ELECTROLYSIS; REDUCTION; ELECTRODES; DESIGN; ELECTROLYTIC CELLS; MONITORING; ON-LINE MEASUREMENT SYSTEMS; CHEMICAL REACTIONS; LYSIS; ON-LINE SYSTEMS; 440800* - Miscellaneous Instrumentation- (1990-); 320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes

Citation Formats

Sadoway, D.R. Aluminum reference electrode. United States: N. p., 1988. Web.
Sadoway, D.R. Aluminum reference electrode. United States.
Sadoway, D.R. Tue . "Aluminum reference electrode". United States.
@article{osti_7067429,
title = {Aluminum reference electrode},
author = {Sadoway, D.R.},
abstractNote = {A stable reference electrode is described for use in monitoring and controlling the process of electrolytic reduction of a metal. In the case of Hall cell reduction of aluminum, the reference electrode comprises a pool of molten aluminum and a solution of molten cryolite, Na[sub 3]AlF[sub 6], wherein the electrical connection to the molten aluminum does not contact the highly corrosive molten salt solution. This is accomplished by altering the density of either the aluminum (decreasing the density) or the electrolyte (increasing the density) so that the aluminum floats on top of the molten salt solution. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {8}
}