1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2. Ironmaking Works, Shougang Qiangang Co., Ltd., Qian’an 064404, Hebei, China
Abstract:To simulate the effect of iron ore reduction in lumpy zone on the permeability of stock column in BF, the experimental methods were designed according to the actual movement of burden, temperature distribution and gas compositions. The equipments were built which could monitor the pressure drop of burden column and reduction index of ore at real-time. The evaluating indicators for the effects of gradually temperature rise and reduction of ore on the permeability of burden column were given. The pressure drop of burden column and the reduction index of sinter, pellet, lump ore and mixed ores were tested. It is found that the degradation index after gradually temperature rise and reduction has good correlation with the increment rate of pressure drop of burden column, which is more proper to judge the effect of ore reduction in the entire lumpy zone in BF on the permeability of burden column and to evaluate the effect of ore property on BF operation than conventional low temperature test of reduction degradation.The influences of testing factors on the ore degradation were also studied, including original particle size, weight loss by reduction, reduction temperature, reduction time, heating, drumming and soaking.
收稿日期: 2010-11-26
出版日期: 2011-11-17
引用本文:
赵宏博,程树森,白永强,马金芳, ,万雷,王尉平. 高炉块状带矿石逐渐升温还原对料层透气性影响[J]. 钢铁, 2011, 46(11): 10-15.
ZHAO Hong-bo1,CHENG Shu-sen1,BAI Yong-qiang1,MA Jin-fang1, 2,WAN Lei2,WANG Wei-ping2. Effect of Gradually Temperature Rising and Reduction of Ore in Lumpy Zone on the Permeability. Iron and Steel, 2011, 46(11): 10-15.