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过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 362-366.DOI: 10.12034/j.issn.1009-606X.216283

• 过程与工艺 • 上一篇    下一篇

碳机械活化对ZnO和FexOy直接还原的影响

蒋武锋, 赵 朔, 郝素菊* 张玉柱   

  1. 华北理工大学冶金与能源学院,现代冶金技术教育部重点实验室,河北唐山 063009
  • 收稿日期:2016-08-30 修回日期:2016-10-12 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 郝素菊 sujuh@sina.com
  • 基金资助:
    国家自然基金资助项目;河北省自然科学基金项目;华北理工大学培育基金项目

Influence of Carbon Mechanical Activation on the ZnO and FexOy Direct Reduction

JIANG Wu-feng, ZHAO Shuo, HAO Su-ju*, ZHANG Yu-zhu   

  1. College of Metallurgy and Energy, North China University of Science and Technology, Key Laboratory of Modern Metallurgy Technology, Ministry of Education, Tangshan, Hebei 063009, China
  • Received:2016-08-30 Revised:2016-10-12 Online:2017-04-20 Published:2017-04-19
  • Contact: HAO Su-ju sujuh@sina.com

摘要: 通过机械力促使固体物质的晶体结构及物理化学性质发生改变的方法称之为机械活化。为了研究机械活化对氧化锌和氧化铁开始还原温度的影响,对碳热还原反应进行了热力学分析。依据对反应吉布斯自由能参数的对比计算得出,具有机械储能的碳不仅会使氧化铁和氧化锌的开始还原温度显著降低,还进一步改善了碳粉的还原能力,达到了节能降耗的要求。氧化锌的开始还原温度降低了185℃,赤铁矿的开始还原温度降低了105℃。温度降低的主要原因从热力学角度分析是碳在机械活化过程中产生了晶格畸变能和表面能,其中又以晶格畸变引起的位错能和无定型化能为主要储能来源。

关键词: 机械活化, 热力学分析, 吉布斯自由能, 机械储能

Abstract: Through mechanical urged the solid material crystal structure and physical and chemical properties change method called mechanical activation. In order to study the mechanical activation of zinc oxide and iron oxide reduction temperature, the influence of the carbon thermal reduction reaction thermodynamics calculation and analysis. Based on comparison of reaction Gibbs free energy parameters calculation, the results show that the mechanical energy storage of carbon will not only make the beginning of ferric oxide and zinc oxide reduction temperature decreased significantly, and improve the ability of powdered carbon reduction, has reached the requirement of saving energy and reducing consumption. The beginning of the zinc oxide reduction temperature reduced about 185 ℃, the beginning of the hematite reduction temperature decreased around 105 ℃.Temperature decrease from the perspective of thermodynamics analysis is the main reasons for carbon produced in the process of mechanical activation lattice distortion energy and surface energy, which can to lattice distortion caused by the dislocation and no standard for the major source of energy storage.

Key words: Mechanical activation, Thermodynamic analysis, Gibbs free energy, Mechanical energy storage