|
|
Self-reduction of Manganese-rich Slag Briquette Containing Carbon |
Bo ZHANG,Zheng-liang XUE,Ting-ting ZHU,Jiang DONG |
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China |
|
|
Abstract The self-reduction experiment of manganese-rich slag briquette containing carbon was carried out in a high-temperature carbon tube furnace. The main factors affecting the reduction rate were analyzed, and the kinetic model of reduction was established. The results show that the increase of basicity of briquette has an obvious effect on improving reduction rate. When the carbon ratio of briquettes is 1.2 and its basicity is 1.0, the reduction rate can reach 90%. It can accelerate reduction process and decrease reduction time when the appropriate flux CaF2 is added to the briquette. The apparent activation energy of chemical reaction is 24.07 kJ/mol, and the apparent activation energy of internal diffusion is 107.55 kJ/mol by calculation. Therefore, the reduction rate of briquette is determined by the mass transfer of CO in the product layer.
|
Received: 18 December 2013
Published: 07 May 2015
|
Fund:Specialized Research Fund for the Doctoral Program of Higher Education |
Corresponding Authors:
zhang bo
E-mail: 181798320@qq.com
|
|
|
|
[1] |
Hao Li,Yan-chong Yu,,Xiang Ren,Shao-hua Zhang,She-bin Wang,,*. Evolution of Al2O3 inclusions by cerium treatment in low carbon high manganese steel[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 925-934. |
[2] |
Ying-yi Zhang,Wei Lv,Xue-wei Lv,Chen-guang Bai,Ke-xi Han,Bing Song. Oxidation kinetics of ilmenite concentrate by non-isothermal thermogravimetric analysis[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 678-684. |
[3] |
Jian-guo Chen,Yong-chang Liu,Chen-xi Liu,Bi-yu Yan,Hui-jun Li. Effects of tantalum on austenitic transformation kinetics of RAFM steel[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 705-710. |
[4] |
Hong-huan Mao,Xing Qi,Jing Cao,Li-cong An,Yi-tao Yang*. Effect of Si on high temperature oxidation of 30Cr13 stainless steel[J]. Chinese Journal of Iron and Steel, 2017, 24(5): 561-566. |
[5] |
Hui Guo,Peng Zhou,*,Ai-min Zhao,,Chao Zhi,Ran Ding,Jia-xing Wang. Effects of Mn and Cr contents on microstructures and mechanical properties of low temperature bainitic steel[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 290-295. |
[6] |
Yang-huan Zhang,,*,Zhong-hui Hou,,Ying Cai,Hong-wei Shang,Yan Qi,Dong-liang Zhao. Structures and electrochemical performances of as-cast and spun RE-Mg-Ni-Mn-based alloys applied to Ni-MH battery[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 296-305. |
|
|
|
|