Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys
Abstract
Disclosed is a method for the carbothermic reduction of aluminum oxide to form an aluminum alloy including producing silicon carbide by heating a first mix of carbon and silicon oxide in a combustion reactor to an elevated temperature sufficient to produce silicon carbide at an accelerated rate, the heating being provided by an in situ combustion with oxygen gas, and then admixing the silicon carbide with carbon and aluminum oxide to form a second mix and heating the second mix in a second reactor to an elevated metal-forming temperature sufficient to produce aluminum-silicon alloy. The prereduction step includes holding aluminum oxide substantially absent from the combustion reactor. The metal-forming step includes feeding silicon oxide in a preferred ratio with silicon carbide. 1 fig.
- Inventors:
- Issue Date:
- Research Org.:
- Aluminum Co of America
- OSTI Identifier:
- 7257793
- Patent Number(s):
- 4491472
- Application Number:
- PPN: US 6-472670
- Assignee:
- Aluminum Co. of America, Pittsburgh, PA (United States)
- DOE Contract Number:
- AC01-77CS40079
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 7 Mar 1983
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; FABRICATION; SILICON ALLOYS; CHEMICAL REACTORS; IN-SITU COMBUSTION; REDUCTION; ALLOYS; CHEMICAL REACTIONS; COMBUSTION; IN-SITU PROCESSING; OXIDATION; PROCESSING; THERMOCHEMICAL PROCESSES; 360101* - Metals & Alloys- Preparation & Fabrication
Citation Formats
Stevenson, D T, and Troup, R L. Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys. United States: N. p., 1985.
Web.
Stevenson, D T, & Troup, R L. Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys. United States.
Stevenson, D T, and Troup, R L. Tue .
"Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys". United States.
@article{osti_7257793,
title = {Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys},
author = {Stevenson, D T and Troup, R L},
abstractNote = {Disclosed is a method for the carbothermic reduction of aluminum oxide to form an aluminum alloy including producing silicon carbide by heating a first mix of carbon and silicon oxide in a combustion reactor to an elevated temperature sufficient to produce silicon carbide at an accelerated rate, the heating being provided by an in situ combustion with oxygen gas, and then admixing the silicon carbide with carbon and aluminum oxide to form a second mix and heating the second mix in a second reactor to an elevated metal-forming temperature sufficient to produce aluminum-silicon alloy. The prereduction step includes holding aluminum oxide substantially absent from the combustion reactor. The metal-forming step includes feeding silicon oxide in a preferred ratio with silicon carbide. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}