摘要
在900~1 200℃范围内,通过还原失重试验研究了赤泥含碳球团的还原特性。结果表明,还原得到的金属化球团中铁元素总含量在60.7%以上,金属化率在83.48%以上。赤泥含碳球团的金属化率和还原速率均随温度的升高而增大,赤泥含碳球团的还原速率由碳的气化反应和界面化学反应混合控制,表观活化能为110.16~111.42kJ/mol。
Reduction characteristics of carbon-bearing pellets made from red mud were investigated at 900-1 200℃ by weight-loss experiments. The results show that metallization rate of metalized pellets with iron content of 60.7% is 83.48% above, which can be used as raw material for iron and steel metallurgy. Reaction fraction and conversion rate of pellets rises with increase of temperature at 900 - 1 200 ℃. Reduction rate of pellets is controlled by interface or local reaction and carbon gasification with activation energy of 110.16--11.42 kJ/mol.
作者
宁国山
李帅
张波
刘承军
姜茂发
NING Guo-shan LI Shuai ZHANG Bo LIU Cheng-jun JIANG Mao-fa(School of Metallurgy, Northeastern University, Shenyang 110819, China Key Laboratory for Ecological Metallurgy oil Multimetallic Mineral, Ministry o{ Education Northeastern University, Shenyang 110819, China AnshanAnming Company Limited, Anshan 114000, Liaoning, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第1期24-27,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51374059)
关键词
赤泥
含碳球团
还原动力学
活化能
red mud
carbon-bearing pellets
reduction rate
activation energy
