含硫铝土矿预焙烧动力学研究  

Research on Pre-roasting Kinetics of High-sulfur Bauxite

作　　者：吕国志[1] 张廷安[1] 赵爱春[1] 鲍丽[1] 倪培远[1] 刘燕[1] 

机构地区：[1]东北大学多金属共生矿生态化利用教育部重点实验室,辽宁沈阳110004

出　　处：《过程工程学报》2010年第S1期134-137,共4页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50644016;50704011);国家973项目(编号:2007CB13504);教育部高校博士点基金项目(编号:20050145029);辽宁省优秀青年科技人才基金项目(编号:2005221012)

摘　　要：使用马弗炉、旋转管式炉及流化床对我国含硫一水硬铝石型铝土矿进行预焙烧脱硫性能的研究.考察了焙烧温度、焙烧时间和矿石粒度对焙烧矿中硫含量的影响,并根据实验结果对750~800℃温度范围内不同焙烧方式下矿石脱硫预焙烧动力学进行分析.实验和计算结果表明,不同焙烧方式下焙烧矿中硫含量在750和800℃焙烧温度下均随焙烧时间的延长而下降,马弗炉、旋转管式炉焙烧矿在该焙烧条件下反应表观活化能分别为46.895l和33.090kJ/mol,流态化焙烧反应表观活化能为505.727kJ/mol.The high-sulfur bauxite was preroasted in muffle furnace,rotary tube furnace and fluidized bed to investigate the effects of roasting temperature and roasting time on the desulfurization performance.Pre-roasting kinetics of different roasting modes was also studied.The experimental and calculation results indicated that the sulfur content of roasted ore decreased with roasting time at the roasting temperatures of 750 and 800℃.The apparent activation energy values of roasting process by both muffle and rotary tube furnaces were 46.895 and 33.090 kJ/mol,and 505.727 kJ/mol by fluidized bed.

关 键 词：高硫铝土矿 预焙烧 动力学 

分 类 号：TF821[冶金工程—有色金属冶金]