|
|
|
| Model of Iron Ore Sintering Based on Melt and Mineral Formation |
| Jun ZHANG1,2,Xing-min GUO1,Yuan-hong QI2,Ding-liu YAN2 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. State Key Laboratory of Advanced Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China |
|
|
|
|
Abstract A model of iron ore sintering was built with consideration of fuel combustion, catalysis of sinter mixture as well as formation of melt and mineral, which was verified via sintering pot tests and showed a good fit to the experimental results. The effect of bed depth on temperature was reflected by the residence time in high-temperature zone, rather than the top value of the temperature, which was weakened by melt formation as well as hematite decomposition. Moreover, the effect of bed depth, fuel content and distribution on sintering process was different, which was reflected by temperature profiles and the rule of calcium ferrite formation. The formation of melt as well as magnetite was a process which was decided by kinetic factors, while the formation of calcium ferrite was related to fuel blending conditions, which is determined by thermodynamics when the fuel ratio inside sinter granules is low or fuel content is high, otherwise, it is determined by kinetics.
|
|
Received: 20 June 2013
Published: 13 April 2015
|
| Fund:National Outstanding Youth Science Foundation of China |
|
Corresponding Authors:
�ſ� ZHANG Jun
E-mail: zjxt424@163.com
|
|
|
|
| [1] |
Liu-zhen Bian,Zhi-yuan Chen,,Li-jun Wang,*,Fu-shen Li,Kuo-chih Chou. Oxidation resistance, thermal expansion and area specific resistance of Fe-Cr alloy interconnector for solid oxide fuel cell[J]. Chinese Journal of Iron and Steel, 2017, 24(1): 77-83. |
| [2] |
Gang WANG,Ping XIAO,Zhong-jia HUANG,Ru-jie HE. Microstructure and Wear Properties of Fe-based Amorphous Coatings Deposited by High-velocity Oxygen Fuel Spraying[J]. Chinese Journal of Iron and Steel, 2016, 23(7): 699-704. |
| [3] |
Wen��long ZHAN,,Keng WU,Zhi��jun HE,Qi��hang LIU,Xiao��juan WU. Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram[J]. Chinese Journal of Iron and Steel, 2015, 22(12): 1078-1084. |
| [4] |
ZHANG Rui-qian,LI Yan,WANG Xiao-min. Compatibility of Austenitic Steel With Molten Lead-Bismuth-Tin Alloy[J]. Chinese Journal of Iron and Steel, 2011, 18(7): 69-72. |
|
|
|
|
2015, Vol. 22 
