Effect of Granule Structure on the Combustion Behavior of Coke Breeze
Iron ore sintering machines in Japan emits 32 Mt CO2 annual, amounting to 2.6 percents of total emission in Japan. Since the exhaust gas contains a few percent of CO, the complete combustion can reduce coke consumption. To obtain the principal for controlling coke combustion in the sintering bed, the present research determined the ignition temperature and the combustion rate of cokes existing in various positions in the granules of sintering raw mixture, which made of coke and one of iron oxide (ore), limestone and alumina. For coarse coke particle, the ore and limestone adhesion lowered the ignition temperature and accelerate the combustion rate. For fine coke particles adhering on various kind of nucleus or coexisting in composite pellet-like granule, neither the ignition temperature nor the combustion rate changed except for a composite pellet-like granule of coke and limestone. The acceleration effect of limestone on coke combustion rate seems to derive from catalysis effect.
iron ore sintering carbon diozide coke combustion
Nakagawa Terushige Nakano Masanori Nagasaka Tetsuya
Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki Aoba-ku, Sendai, 980-084 Ironmaking R&D Div., EPC, Nippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511, Japan
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
198-202
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）