Production of aluminum-silicon alloy and ferrosilicon and commercial purity aluminum by the direct reduction process. First interim technical report, Phase D, January 1-March 31, 1981
Operation of the bench AF-reactor on burden with all reducing carbon exterior to the ore pellet resulted in low metal alloy product yields and prematurely terminated runs, indicating the need for intimate contact between alumina and carbon to produce oxycarbide liquid prior to reaction with solid silicon carbide. Carbon solubility tests made on 60Al-40Si alloys at 2200/sup 0/C in graphite crucibles indicated continued reaction to form SiC for one hour. Efficiency of reduction to SiC ranged from 68 to 100%. The A-C two-electrode submerged arc reactor pilot, SAR-II, was successfully operated on both alumina-clay-coke and alumina-silicon carbide-coke (from the VSR prereduction) burdens. Metal alloy was produced and tapped in each of four runs. The pilot crystallizer was operated to evalute the two-stage (stop and go) crystallization technique on obtaining high yields of Al in Al-Si eutectic, with a limit of 1.0% Fe and 0.1% Ti in the alloy product. 18 figures, 19 tables. (DLC)
- Research Organization:
- Aluminum Co. of America, Alcoa Center, PA. Alcoa Labs.
- DOE Contract Number:
- AC01-77CS40079
- OSTI ID:
- 6420340
- Report Number(s):
- CONS-5089-15
- Country of Publication:
- United States
- Language:
- English
Similar Records
Production of aluminum-silicon alloy and ferrosilicon and commercial purity aluminum by the direct reduction process. Third interim technical report, Phase C for the period 1980 July 1-1980 September 30
Production of aluminum-silicon alloy and ferrosilicon and commercial purity aluminum by the direct reduction process. Second interim technical report, Phase B, December 1, 1978-February 28, 1979
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ALUMINIUM
PRODUCTION
ALUMINIUM BASE ALLOYS
SILICON ALLOYS
ALUMINIUM OXIDES
CARBIDES
CARBON
CRYSTALLIZATION
EFFICIENCY
FEASIBILITY STUDIES
REDUCTION
RESEARCH PROGRAMS
SILICA
SILICON CARBIDES
SOLUBILITY
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
METALS
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON COMPOUNDS
SILICON OXIDES
360101* - Metals & Alloys- Preparation & Fabrication
320300 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes