A Pilot-Scale Investigation on Microwave Heating Ignition in Iron Ore Sintering
In this investigation, the microwave heated ignition (MHI) technology is used for iron ore sintering. The pilot-scale sintering experiments using MHI are carried out in a 1260 mm×320 mm×300 mm sintering pot, and the optimal conditions of hot airflow temperature 680-710 ℃ and air flow rate 384 Nm3/h are obtained when microwave output power is 72 kW, ignition time is 1.5 min and heat-reserved time is 4min. Compared with the former small-scale findings, the energy consumption of MHI is only 25.65 MJ/m2, far less than that of gas ignition (CGI) of 185.13 MJ/m2. Results also show the sintering flue gas of MHI has less polluted gas than that of CGI has, and the sinters of MHI have better quality and microstructure than those of CGI have, indicating the novel MHI has a promising prospect.
microwave heated iron ore sintering ignition
MAO Xiao-ming ZHANG Yuan-bo HUANG Zhu-cheng LI Guang-hui FAN Xiao-hui JIANG Tao
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
国际会议
The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)
上海
英文
242-245
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）