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Title: Molten salt bath circulation design for an electrolytic cell

Abstract

An electrolytic cell for reduction of a metal oxide to a metal and oxygen has an inert anode and an upwardly angled roof covering the inert mode. The angled roof diverts oxygen bubbles into an upcomer channel, thereby agitating a molten salt bath in the upcomer channel and improving dissolution of a metal oxide in the molten salt bath. The molten salt bath has a lower velocity adjacent the inert anode in order to minimize corrosion by substances in the bath. A particularly preferred cell produces aluminum by electrolysis of alumina in a molten salt bath containing aluminum fluoride and sodium fluoride.

Inventors:
 [1];  [2];  [3];  [3];  [4]
+ Show Inventor Affiliations
  1. Monroeville, PA
  2. Trafford, PA
  3. Murrysville, PA
  4. Sarver, PA
Issue Date:
Research Org.:
Aluminum Co of America
OSTI Identifier:
872452
Patent Number(s):
5938914
Assignee:
Aluminum Company of America (Pittsburgh, PA)
Patent Classifications (CPCs):
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25C - PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS
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DOE Contract Number:  
FC07-89ID12848
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
molten; salt; bath; circulation; design; electrolytic; cell; reduction; metal; oxide; oxygen; inert; anode; upwardly; angled; roof; covering; mode; diverts; bubbles; upcomer; channel; agitating; improving; dissolution; velocity; adjacent; minimize; corrosion; substances; particularly; preferred; produces; aluminum; electrolysis; alumina; containing; fluoride; sodium; particularly preferred; salt bath; electrolytic cell; metal oxide; molten salt; inert anode; bath containing; containing aluminum; cell produces; minimize corrosion; improving dissolution; produces aluminum; angled roof; /205/204/

Citation Formats

Dawless, Robert K, LaCamera, Alfred F, Troup, R Lee, Ray, Siba P, and Hosler, Robert B. Molten salt bath circulation design for an electrolytic cell. United States: N. p., 1999. Web.
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Dawless, Robert K, LaCamera, Alfred F, Troup, R Lee, Ray, Siba P, & Hosler, Robert B. Molten salt bath circulation design for an electrolytic cell. United States.
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Dawless, Robert K, LaCamera, Alfred F, Troup, R Lee, Ray, Siba P, and Hosler, Robert B. Fri . "Molten salt bath circulation design for an electrolytic cell". United States. https://www.osti.gov/servlets/purl/872452.
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@article{osti_872452,
title = {Molten salt bath circulation design for an electrolytic cell},
author = {Dawless, Robert K and LaCamera, Alfred F and Troup, R Lee and Ray, Siba P and Hosler, Robert B},
abstractNote = {An electrolytic cell for reduction of a metal oxide to a metal and oxygen has an inert anode and an upwardly angled roof covering the inert mode. The angled roof diverts oxygen bubbles into an upcomer channel, thereby agitating a molten salt bath in the upcomer channel and improving dissolution of a metal oxide in the molten salt bath. The molten salt bath has a lower velocity adjacent the inert anode in order to minimize corrosion by substances in the bath. A particularly preferred cell produces aluminum by electrolysis of alumina in a molten salt bath containing aluminum fluoride and sodium fluoride.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}
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