中南大学学报（自然科学版）2016，Vol.47Issue(12)：3976-3980,5.DOI:10.11817/j.issn.1672-7207.2016.12.002
采用分段法研究含镁球团等温还原过程动力学
Isothermal reduction kinetics of magnesium containing pellets by sectioning method
摘要
Abstract
In order to study the influence of MgO on reduction behavior of pellets and find the kinetic mechanisms, isothermal reduction experiment of three kinds of magnesium-containing pellets was done to research the reduction performance by weight loss method. Furthermore, the change of reduction degree and reduction rate was examined. The kinetics of reduction was analyzed by sectioning method, and two different kinetic mechanisms were found respectively at initial stage and later stage. Based on this, the dynamic models of different reaction stages were established, and the reaction rate constants were obtained. The results show that the reaction rate constant at initial stage is influenced significantly by the content of MgO. However, the content of MgO has less influence on the reaction rate of FeO reduction at later stage.关键词
分段法/球团矿/还原动力学/反应速率常数Key words
sectioning method/pellets/reduction kinetics/reaction rate constant分类
矿业与冶金引用本文复制引用
青格勒,吴铿,员晓,刘起航,杜瑞岭,闫广..采用分段法研究含镁球团等温还原过程动力学[J].中南大学学报（自然科学版）,2016,47(12):3976-3980,5.基金项目
国家自然科学基金资助项目(51274026,51474022)；钢铁冶金新技术国家重点实验室自主研发项目(41603003)；国家高技术研究发展计划(863计划)项目(2009AA06Z105)(Projects(51274026,51474022) supported by the National Natural Science Foundation of China （51274026,51474022）
Project(41603003) supported by the Independent Research Project of State Key Laboratory of Advanced Metallurgy （41603003）
Project (2009AA06Z105) supported by the National High Technology Research and Development Program (863 Program) of China) （2009AA06Z105）
