|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||7th International Symposium on High Temperature Metallurgical Processing
||KK-5: Influence of CaO on Non-isothermal Crystallization Kinetics of Vanadium Spinel in Vanadium Slag
||Wang Zhou, Bing Xie, Wen-Feng Tan, Jiang Diao, Hong-Yi Li, Tao Zhang
|On-Site Speaker (Planned)
Adding CaO into the vanadium extraction converter is an effective way to decrease the dephosphorization burden in steelmaking process. The spinel crystallisation process is one of the most decisive factors in the subsequent extraction and hence is worth exploration and discussion. The theoretical calculation results shows that the peak temperature of the total crystallization rate will decrease 5K with basicity increasing 0.1. The relation among cooling conditions and grain size of spinels is also discussed. It is found that low cooling rate and high basicity benefit spinel crystal growth. The restriction factors of spinel crystal growth is solid crystal receive liquid-solid interfacial new atom. The crystal growth belongs to Ostwald coarsening grew up controlled by diffusion while the temperature cooled down to 1250℃(1523K) in cooling rate of 5K/min.
||Planned: A print-only volume