（1. Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education， Taiyuan University of Technology， Taiyuan 030024， China 2. Coal Conversion Editorial Office， Taiyuan University of Technology， Taiyuan 030024， China 3.Taiyuan Heavy Industry Co.， Ltd.， Taiyuan 030024， China）
Abstract：The experimental study on the direct reduction of Australian PB powder by CO was carried out by using a self-developed small-scale rotating bed reactor combined with chemical analysis and X-ray diffraction analysis. The results show that when the CO flow rate is 200 mL/min， the particle size range is 0.044-0.089 mm， the reduction time is 60 min， and the reduction temperature is 1 000 ℃， the reduction rate and metallization rate of reduced product are 92.70% and 86.28%， respectively. Kinetic analysis for Australian PB powder reduction reaction was carried out based on the shrinking unreacted core model at 700-1 000 ℃. It is concluded that the reduction process is controlled by the gas internal diffusion and interface chemical reaction in the initial stage[(t＜30 min)，]and the limiting step of reduction reaction is gas internal diffusion in the final stage[（t＞30 min）]with the pre-exponential factor of[A]is 0.006 72 s－1 and the apparent activation energy of[E]is 10.043 kJ/mol.
魏 征，刘改换，贾江宁，董 跃，赵秀丽，张永发. 旋转床CO还原澳大利亚PB粉特性及动力学研究[J]. , 2017, 27(03): 21-27.
WEI Zheng，LIU Gai-huan，JIA Jiang-ning，DONG Yue，ZHAO Xiu-li，ZHANG Yong-fa. Study on characteristics and kinetics of Australian PB powder reduced by CO in rotary bed. , 2017, 27(03): 21-27.
[1]李维国.世纪以来中国炼铁技术发展的回顾和展望[J].中国冶金, 2012, 22(11):4-10
[2]Zhang S R, Yin H.The Trends of Ironmaking Industry and Challenges to Chinese Blast Furnace Ironmaking in the 21~(st) Century[J].China Metallurgy, 2009, 16(5):1-13
[3] 陈津.非高炉炼铁[M]. 化学工业出版社, 2014.
[4] 赵庆杰, 魏国, 沈峰满.直接还原技术进展及其在中国的发展[J]. 鞍钢技术, 2014, (4):1-6.
[5]Kurunov I F.The direct production of iron and alternatives to the blast furnace in iron metallurgy for the 21st century[J].Metallurgist, 2010, 54(5):335-342
[6]Zhu D, Mendes V, Chun T, et al.Direct Reduction Behaviors of Composite Binder Magnetite Pellets in Coal-based Grate-rotary Kiln Process[J].Isij International, 2011, 51(2):214-219
[7]Kawanari M, Matsumoto A, Ashida R, et al.Enhancement of Reduction Rate of Iron Ore by Utilizing Iron OreCarbon Composite Consisting of Fine Iron Ore Particles and Highly Thermoplastic Carbon Material[J].Isij International, 2011, 51(8):1227-1233
[8] 方觉.非高炉炼铁工艺与理论[M]. 冶金工业出版社, 2010.
[9] 陈华, 洪新, 方立武.铁矿粉还原工艺评述[C]// 全国冶金工艺理论学术会议论文专辑. 2005.
[10]王其洪, 邵剑华, 林银河, 等.微型流化床内还原铁矿粉动力学试验[J].钢铁研究学报, 2012, 24(4):6-9
[11]Zuo H B, Wang C, Dong J J, et al.Reduction kinetics of iron oxide pellets with H2 and CO mixtures[J].International Journal of Minerals Metallurgy & Materials, 2015, 22(7):688-696
[12]Habermann A, Winter F, Hofbauer H, et al.An Experimental Study on the Kinetics of Fluidized Bed Iron Ore Reduction[J].Isij International, 2000, 40(10):935-942
[13]Jozwiak W K, Kaczmarek E, Maniecki T P, et al.Reduction behavior of iron oxides in hydrogen and carbon monoxide atmospheres[J].Applied Catalysis A General, 2007, 326(1):17-27
[14]唐小芳, 赵文广, 彭军, 等.白云鄂博铁精矿含碳球团直接还原实验研究[J].内蒙古科技大学学报, 2013, 32(2):103-106
[15]张旭, 张建良, 郭豪, 等.铁碳复合球团直接还原试验研究[J].矿冶工程, 2009, 29(2):55-58
[16]权娟娟, 孙毅, 李玉祥, 等.不同还原方法对赤铁矿粉金属化率的影响[J].粉末冶金工业, 2013, 23(3):32-36
[17]Pang J M, Guo P M, Zhao P.Reduction of 1-3 mm Iron Ore by CO on Fluidized Bed[J].Journal of Iron & Steel Research International, 2011, 18(3):1-5
[18]Weiss B, Sturn J, Voglsam S, et al.Industrial fluidised bed direct reduction kinetics of hematite ore fines in H2,rich gases at elevated pressure[J].Chemical Engineering Science, 2011, 66(4):703-708
[19]Ettabirou M, Dupre B, Gleitzer C.Hematite ore reduction to magnetite with COCO2 kinetics and microstructure[J].Steel Research, 1986, 57(7):306-311
[20] 王兆才, 储满生, 赵庆杰, 等.还原气氛和温度对氧化球团气基还原反应进程的影响[C]// 中国钢铁年会. 2009.
[21] 张波, 张建良, 刘兴乐, 等.还原条件对气基还原中球团金属化率的影响[C]// “创新创意, 青年先行”中国金属学会青年学术会. 2014.
[22]司新国, 鲁雄刚, 李传维, 等.攀枝花铁精矿粉氧化过程的实验研究[J].中南大学学报自然科学版, 2011, 42(1):56-61
[23]庞建明, 郭培民, 赵沛, 等.低温下氢气还原氧化铁的动力学研究[J].钢铁, 2008, 43(7):7-11
[24]智强, 赵炜, 李辉.模拟流态化还原微粉的试验研究[J].粉末冶金工业, 2014, 24(3):11-16
[25] 张宇涛.铁矿粉流态化还原动力学的比较实验研究[D]. 重庆大学, 2013.
[26] 李林, 牛犁, 郭汉杰, 等.氢气还原褐铁矿实验研究与动力学分析[J]. 北京科技大学学报, 2015(1):13-19.
[27] 黄希祜.钢铁冶金原理[M]. 冶金工业出版社, 2012.
[28]刘建华, 张家芸.及—气体还原铁氧化物反应表观活化能的评估[J].钢铁研究学报, 2000, 34(1):5-9
2017, Vol. 27 
