|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Study on Effect of Al-O-C Compound in Alumina Carbonthermal Reduction
||Jun Yang, Yang Tian
|On-Site Speaker (Planned)
In this paper, initial reaction temperature for every reaction in alumina carbonthermal reduction was calculated by thermodynamics. The structures and properties changes for single unit cell of alumina, Al-O-C compounds and aluminium carbide were simulated by first principle calculation. According to theoretical calculation results, alumina carbonthermal reductions which coal and charcoal separately used as reductant were carried out under atmospheric. Basis on experimental results, activity coefficients for Al-Si were calculated by molecular interaction volume model. Finally, the major equations in carbonthermal reduction reduced to three general equations by reacted temperature; the sequence for each substance which formed in reductions was Al4O4C→Al2OC→Al4C3; and calculating results indicated between 2100 to 2300℃ Al-Si was a minus tolerance system, which well explained why coal was appropriate for reduction than charcoal.
||Planned: Light Metals Volume