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Title: Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant

Abstract

A process for producing aluminum metal by carbothermic reduction of alumina ore. Alumina ore is heated in the presence of carbon at an elevated temperature to produce an aluminum metal body contaminated with about 10-30% by wt. aluminum carbide. Aluminum metal or aluminum alloy scrap then is added to bring the temperature to about 900-1000.degree. C. and precipitate out aluminum carbide. The precipitated aluminum carbide is filtered, decanted, or fluxed with salt to form a molten body having reduced aluminum carbide content.

Inventors:
 [1]
  1. Trafford, PA
Issue Date:
Research Org.:
Aluminum Company of America
OSTI Identifier:
880610
Patent Number(s):
6475260
Application Number:
10/939857
Assignee:
Alcoa Inc. (Pittsburgh, PA)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
FC36-00ID13900
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

LaCamera, Alfred F. Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant. United States: N. p., 2002. Web.
LaCamera, Alfred F. Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant. United States.
LaCamera, Alfred F. Tue . "Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant". United States. https://www.osti.gov/servlets/purl/880610.
@article{osti_880610,
title = {Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant},
author = {LaCamera, Alfred F},
abstractNote = {A process for producing aluminum metal by carbothermic reduction of alumina ore. Alumina ore is heated in the presence of carbon at an elevated temperature to produce an aluminum metal body contaminated with about 10-30% by wt. aluminum carbide. Aluminum metal or aluminum alloy scrap then is added to bring the temperature to about 900-1000.degree. C. and precipitate out aluminum carbide. The precipitated aluminum carbide is filtered, decanted, or fluxed with salt to form a molten body having reduced aluminum carbide content.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {11}
}

Patent:

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