Direct reduction of coal based vanadium-bearing titanomagnetite
HONG Lu-kuo1，QI Yuan-hong1，SUN Cai-jiao2，GAO Jian-jun1，WU Bing-qiang1
（1. State Key Laboratory of Advanced Steel Processes and Products，Central Iron and Steel Research Institute，Beijing 100081， China 2. College of Metallurgy and Energy，North China University of Science and Technology，Tangshan 063009，Hebei，China）
Abstract：In order to investigate the influence factors and reduction behavior of vanadium-bearing titanomagnetite， the influences of reduction temperature， reduction time and[n(C)/n(O)]on the reduction process of carbon composite briquettes of vanadium-bearing titanomagnetite were studied， and the XRD was used for analyzing the reduction mechanism of carbon composite briquettes of vanadium-bearing titanomagnetite. The results show that under certain conditions the metallization rate increases with the rise of reduction temperature， but the metallization rate increases gently after 1 200 ℃， because the reduction reaction of iron oxides becomes gently after 1 200 ℃， and titanium iron compounds are difficult to be broken. With the increase of reduction time and[n(C)/n(O)，]the metallization rate increases firstly and then decreases， because the reduction time lasts too long， the reoxidation of metallized briquettes can not be avoided， and the high[n(C)/n(O)]leads to too much ash in metallized briquettes.It has an effect on reduction process， so the metallization rate of metallized briquettes decreases.
收稿日期: 2017-03-06
出版日期: 2017-11-14
引用本文:
洪陆阔，齐渊洪，孙彩娇，高建军，武兵强. 钒钛磁铁矿煤基直接还原试验[J]. 钢铁, 2017, 52(11): 15-19.
HONG Lu-kuo，QI Yuan-hong，SUN Cai-jiao，GAO Jian-jun，WU Bing-qiang. Direct reduction of coal based vanadium-bearing titanomagnetite. Iron and Steel, 2017, 52(11): 15-19.
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2017, Vol. 52 
