|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||The Competitive Adsorption of HF and SO2 on Smelter Grade Alumina
||Neal Dando, Stephen Lindsay
|On-Site Speaker (Planned)
Smelter grade alumina (SGA) is the preferred agent for recovering HF from aluminum smelter ventilation gas streams, since the alumina also serves as feed to the electrolysis cells, thereby allowing return of the adsorbed fluoride to the process. This alumina-based recovery loop includes sulfur, since SO2 evolved from cells is adsorbed on the SGA. This paper explores the competitive adsorption/reaction behavior of SO2 and HF and on smelter grade alumina as well as the impact of increasing HF exposure on the surface area and porosimetry of SGA.
||Planned: Light Metals Volume