|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Alumina & Bauxite
||Thermodynamics Analysis on Process of Pelletizing Chlorination of Fly Ash
||Long Wang, Zhang Ting'an, Guozhi Lyu , Jingzhong Zhang, Zhihe Dou , Weiguang Zhang, Xijuan Pan , Yanxiu Wang
|On-Site Speaker (Planned)
Fly ash, generated during the combustion of coal for energy production, is an industrial by-product which is recognized as an environmental pollutant. In this paper, thermodynamic calculations and experiments in a tubular furnace reactor were conducted to investigate the impact of process of pelletizing chlorination of fly ash. The thermodynamic calculations indicated that pelletizing chlorination reaction converts Al2O3 and SiO2 which can not directly react with chlorine gas originally to chloride completely, and this demonstrates the thermodynamics feasibility of pelletizing chlorination process. Experiments results show that the alumina chlorination efficiency was up to 65% when the pellet diameter was 8mm at 1050℃ for 30 min. The effect of alumina chlorination efficiency in pelletizing chlorination process mainly depended on the temperature, chlorination time and pellet diameter. These findings provide useful information for understanding the pelletizing chlorination process, facilitating the development of pelletizing chlorination metallurgy in efficient clean utilization of fly ash.
||Planned: Light Metals