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过程工程学报 ›› 2018, Vol. 18 ›› Issue (3): 530-536.DOI: 10.12034/j.issn.1009-606X.217289CSTR: 32067.14.jproeng.217289

• 过程与工艺 • 上一篇    下一篇

高磷铁矿含碳团块直接还原动力学

王 臻1， 春铁军1*， 李东升1， 宁 超1， 穆固天1， 朱梦飞1， 龙红明1,2   

  1. 1. 安徽工业大学冶金工程学院，安徽 马鞍山 243002；2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室，安徽 马鞍山 243002
  • 收稿日期:2017-08-07 修回日期:2017-10-31 出版日期:2018-06-22 发布日期:2018-06-06
  • 通讯作者: 春铁军 springcsu@126.com
  • 基金资助:
    安徽省自然科学基金

Direct Reduction Kinetics of Carbon Bearing Briquettes of High-phosphorus Iron Ore

Zhen WANG1, Tiejun CHUN1*, Dongsheng LI1, Chao NING1, Gutian MU1, Mengfei ZHU1, Hongming LONG1,2   

  1. 1. School of Metallurgical Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China; 2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Anhui University of Technology, Ma?anshan, Anhui 243002, China
  • Received:2017-08-07 Revised:2017-10-31 Online:2018-06-22 Published:2018-06-06
  • Contact: CHUN Tie-jun springcsu@126.com

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摘要： 研究了基准条件(不添加Na2SO4和废塑料)、添加4% Na2SO4和添加4%Na2SO4同时废塑料替代25%焦粉直接还原高磷铁矿含碳团块的动力学. 结果表明，不同条件下还原高磷铁矿含碳团块的限制性环节均为气相扩散. 与基准条件相比，高磷铁矿含碳团块中加入4% Na2SO4后，活化能由204.92 kJ/mol降低至158.81 kJ/mol，添加4% Na2SO4同时废塑料替代25%焦粉后，活化能由204.92 kJ/mol降至172.89 kJ/mol.

关键词: 高磷铁矿, 废塑料, 含碳团块, 直接还原, 动力学

Abstract: The reduction kinetics of carbon bearing briquettes of high-phosphorus iron ore under base condition (without adding Na2SO4 and waste plastics), adding 4% Na2SO4 and adding 4% Na2SO4 with waste plastics replacing 25% coke fines were carried out respectively. The results showed that the control process of carbon bearing briquettes under three conditions was gas diffusion. Compared with the base condition, the apparent activation energy of adding 4% Na2SO4 decreased from 204.92 kJ/mol to 158.81 kJ/mol. The addition of 4% Na2SO4 with waste plastics replacing 25% coke fines was also beneficial to the reduction reaction, and the activation energy reduced from 204.92 kJ/mol to 172.89 kJ/mol.

Key words: high phosphorus iron ore, waste plastics, carbon bearing briquette, direct reduction, kinetics.