Effect of oil injection rate on lower zone coke mineralogy of blast furnace and implications
Tuyere drilling was carried to extract coke samples from lower zone of a center working blast furnace operating with two heavy bottom oil injection rates (70 kg/thm and 110 kg/thm).Tuyere cokes were examined using a range of analytical tools with emphasis on distinguishing the effect of injection rates on the modification of raceway coke mineralogy.SIROQUANT,XRD and fixed bed reactor were used to characterize mineralogy,carbon structure and reactivity of cokes respectively.The study showed that injection rate influences coke properties particularly in the raceway.The correlation between SiC and the residual quartz became more apparent of the raceway coke at higher injection rate.At low injection rate,gupeiite was found to be absent,however total amount of ferro-silicon alloys could not be clearly related to the injection rates.At high injection rate,raceway cokes were characterized by lower alkalis and higher Ca bearing minerals.The implications of the mineralogical transformations on coke reactivity and fines are also discussed.
tuyere drilling coke mineral injection rate
Zhuozhu Ye Sushil Gupta Olavi Kerkkonen Riku Kanniala Veena Sahajwalla
Centre for Sustainable Materials Research and Technology School of Materials Science & Engineering T Ruukki Metals Oy,Raahe,Finland
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-5
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）