典型文献
Kinetic analysis of iron ore powder reaction with hydrogen-carbon monoxide
文献摘要：
Iron ore powder was isothermally reduced at 1023–1373 K with hydrogen/carbon monoxide gas mixture (from 0vol％H2/100vol％CO to 100vol％H2/0vol％CO). Results indicated that the whole reduction process could be divided into two parts that proceed in series. The first part represents a double-step reduction (Fe2O3→Fe3O4→FeO), in which the kinetic condition is more feasible compared with that in the second part representing a single-step reduction (FeO→Fe). The influence of hydrogen partial pressure on the reduction rate gradu-ally increases as the reaction proceeds. The average reduction rate of hematite ore with pure hydrogen is about three and four times higher than that with pure carbon monoxide at 1173 and 1373 K, respectively. In addition, the logarithm of the average rate is linear to the composition of the gas mixture. Hydrogen can prominently promote carbon deposition to about 30％ at 1023 K. The apparent activation energy of the reduc-tion stage increases from about 35.0 to 45.4 kJ/mol with the increase in hydrogen content from 20vol％ to 100vol％. This finding reveals that the possible rate-controlling step at this stage is the combined gas diffusion and interfacial chemical reaction.
文献关键词：
中图分类号：
作者姓名：
Xudong Mao;Pritesh Garg;Xiaojun Hu;Yuan Li;Samik Nag;Saurabh Kundu;Jianliang Zhang
作者机构：
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;R&D,Tata Steel Ltd.,Jamshedpur,Jharkhand 831001,India;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China
文献出处：
引用格式：
[1]Xudong Mao;Pritesh Garg;Xiaojun Hu;Yuan Li;Samik Nag;Saurabh Kundu;Jianliang Zhang-.Kinetic analysis of iron ore powder reaction with hydrogen-carbon monoxide)[J].矿物冶金与材料学报,2022(10):1882-1890
A类：
0vol,100vol,20vol
B类：
Kinetic,analysis,iron,powder,reaction,hydrogen,carbon,monoxide,Iron,was,isothermally,reduced,gas,mixture,from,H2,Results,indicated,that,whole,reduction,process,could,be,divided,into,two,parts,series,first,represents,double,step,Fe2O3,Fe3O4,FeO,which,kinetic,condition,more,feasible,compared,second,representing,single,influence,partial,pressure,rate,gradu,increases,proceeds,average,hematite,pure,about,three,four,times,higher,than,respectively,In,addition,logarithm,linear,composition,Hydrogen,can,prominently,promote,deposition,apparent,activation,energy,stage,kJ,content,This,finding,reveals,possible,controlling,this,combined,diffusion,interfacial,chemical
AB值：
0.491652
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