拜耳法生产氧化铝高压溶出温度对象模型的研究  

Research and Application of High Pressure Digestion Temperature Object Model in Bayer Alumina Production

作　　者：张矿伟[1] 雷金辉[2] 罗增勇[1] 颜红明 赵盛萍[1] 张玉忠[1] 

机构地区：[1]玉溪师范学院信息技术工程学院 [2]昆明理工大学云南省有色金属真空冶金重点实验室 [3]中国铝业公司郑州轻金属研究院

出　　处：《特种铸造及有色合金》2016年第3期298-301,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金青年基金资助项目(51104078);国家自然科学基金-云南联合基金资助项目(U0837604)

摘　　要：在Matlab平台下,利用系统辨识方法中输出误差模型进行辨识建模,确定了氧化铝高压溶出温度模型。通过代数稳定判据验证了系统的稳定性。辨识结果表明,辨识所得二阶模型的阶跃响应曲线与现场采集的氧化铝高压溶出器在线温度记录曲线相符合,拟合度为86.27%;辨识模型是合理有效的,能为参数整定、优化控制提供模型依据,提高了系统的控制精度,提高了氧化铝溶出率,降低了生产能耗。Based on the Matlab platform,identification model was established by the output error model in system identification method to determine the model of alumina high-pressure dissolving temperature model.The results reveal that step response curve of the second-order model is fitted basically with the online temperature trace which collected by alumina high-pressure digestion acquistion at worksite,and degree of fitting reaches 86.27%.The stability of the system is verified by the algebraic stability criterion.The identification model is reasonable and effective,which can provide the model basis for parameter setting and optimizing control.At the same time,the control precision of the system is improved,and the dissolution rate of alumina is increased with the decrease of the energy consumption.

关 键 词：拜耳法 氧化铝生产 溶出温度 对象模型 

分 类 号：TF821[冶金工程—有色金属冶金] TG146.21[一般工业技术—材料科学与工程]