|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||7th International Symposium on High Temperature Metallurgical Processing
||Mechanisms of Strengthening the Reduction of Fine Hematite in High Silicon Coal-contianing Mini-pellets by Sodium Additives
||Zhucheng Huang, Liangming Wen, Ronghai Zhong, Tao Jiang
|On-Site Speaker (Planned)
The reduction roasting-magnetic separation and its strengthening of high silicon coal-containing mini-pellets by sodium additives were researched. The results show that the carbon gasification reaction and reduction of fine hematite in high silicon coal-containing mini-pellets with 3% sodium additives were enhanced. Comparing with no sodium additives, the gasification rate of carbon with 3% sodium additives reacting with CO2 for 40 minutes at 950℃and the metallization rate of reduced pellets with 3% sodium additives after roasting for 35 minutes at 960℃ increased from 35.15% and 58.72% to 86.98% and 86.15%, respectively. The analysis of SEM equipped with EDS demonstrates that the inner pore of reduced pellets with 3% sodium additives was more developed and the iron grains size significantly enlarged, meanwhile, the iron grade of concentrate increased from 60.45% to 80.23% and the iron recovery rate decreased from 84.67% to 80.78% after grinding-magnetic separation.
||Planned: A print-only volume