钒钛铁精矿内配碳球团的高温快速还原
白晨光1 ,胡途1 ,吕学伟2 ,邱贵宝1 ,刘松利3
1. 重庆大学
2. 重庆大学材料科学与工程学院
3. 攀枝花学院材料工程学院
Quick Reduction on Vanadium and Titanium Iron Concentrate of Carbon-containing Pellets at High Temperature
摘要 钒钛铁精矿是一种铁、钒、钛等多元素共生的复合矿,具有很高的综合利用价值。通过采用实验室转底炉对钒钛铁精矿内配碳球团进行了高温快速还原的可行性研究,分别考察了配碳比、还原温度、添加剂、还原时间等参数对球团金属化率的影响。结果表明,配碳比(1.5:1)、还原温度(1350℃)、添加剂(2%)、还原时间(20min)时金属化率可以达到88%以上。对原料、还原样品进行x射线衍射分析表明,钒钛铁精矿粉中的磁铁矿、钛磁铁矿和钛铁矿通过还原转变为单质铁、含铁黑钛石。
Abstract :Vanadium and titanium iron concentrate is one kind of iron, vanadium, titanium multiple-element symbiotic composite ore, has extremely high comprehensive utilization value.By using laboratory RHF, a new technology of quick reduction of vanadium and titanium iron concentrate of carbon-containing pellets at high temperature was introduced,and its feasibility was also studied by experiments in this work.The efects of carbon and Oxygen ratio, reaction temperature, additive and reaction time on the metallization rate of pellets were examined respectively.The experimental result showed that a metallization rate of 88% was achieved while the pellets with carbon and Oxygen ratio(1.5:1), reaction temperature(1350℃), additive(2%) and reaction time(20min).XRD analysis of the reduction product indicated that vanadium and titanium iron concentrate was reduced into Fe and (Fe,Mg)Ti2O5.
收稿日期: 2010-07-02
出版日期: 2011-04-15
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