还原温度对流态化还原铁矿粉黏结失流的影响  

Influence of Reduction Temperature on Sticking and Defluidizing of the Fluidized Iron Ore Fines

作　　者：徐其言[1] 任鑫[1] 马恒保 杨鼎[1] 王海川[1] 王建军[1] 

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2017年第2期107-110,共4页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省教育厅重点项目(KJ2017A043)

摘　　要：以杨迪矿粉、大昌矿粉和巴西矿粉等铁矿粉为原料,采用热态可视流化床进行流化实验,分析还原温度对铁矿粉还原度和流化时间的影响,研究不同温度下流态化还原铁矿粉的黏结状况。结果表明:3种铁矿粉的还原度均随着温度的升高逐渐增大,其中大昌矿粉还原度最高,杨迪矿粉还原度最低,而巴西矿粉的还原度受温度影响最大;3种铁矿粉的流化时间均随着温度的升高逐渐减小,还原温度在650℃以下时,巴西矿粉颗粒表面比较平整,不易发生黏结失流。Taking iron ore fines from Yangdi mine, Dachang mine and Brazilian mine as raw material, the fluidization experiment was carried out by a thermal visible fluidized bed. The effect of reduction temperature on the reduction degree and fluidization time of iron ore fines was analyzed, and the sticking condition of the fluidized iron ore fines at different temperatures was studied. The results show that the reducibility of 3 kinds of iron ore fines increases with the increase of temperature. Among them, the one with the highest reduction degree is Dachang ore fines, the lowest reduction degree is Yangdi ore fines, while the reduction degree of Brazilian ore fines is the most affected by temperature. The fluidization time of 3 kinds of iron ore fines decreases with the increase of temperature.When the reduction temperature is below 650 ℃, the surface of Brazilian ore fines is relatively smooth, and sticking and defluidizing is not easy to occur.

关 键 词：流态化 铁矿粉 还原温度 黏结 

分 类 号：TF552[冶金工程—钢铁冶金]