Speaker
Dr
Heng Zhou
(University of Science and Technology Beijing)
Description
Direct reduction degree in COREX affects the reducing gas component and effective heat utilization rate. The present work systematically studies the influence of direct reduction degree on these characteristics in COREX through a static model. The model is developed based on mass and heat balances, which can calculate the consumption of iron ores, coal, fluxes, the volume and composition of the slag and the volume and composition of the reducing gas from melter-gasifier. The model is firstly validated by means of comparing calculated values with actual values. Then, the changes of heat flows, volume and component of reducing gas, and effective heat utilization rate in COREX induced by the variation of direct reduction degree are investigated. Finally, the suitable direct reduction degree in COREX is discussed. The findings of this work should be useful for control and optimizing of COREX operation.
Author
Dr
Heng Zhou
(University of Science and Technology Beijing)
Co-authors
Ms
Bingjie Wen
(University of Science and Technology Beijing)
Mr
Hekai Song
(University of Science and Technology Beijing)
Mr
Kai Gu
(University of Science and Technology Beijing)
Dr
Mingyin Kou
(University of Science and Technology Beijing)
Prof.
Shengli Wu
(University of Science and Technology Beijing)
Mr
Shun Yao
(School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083, China)