拜耳法种分附聚动力学初步研究  

Preliminary study of agglomeration dynamics on crystalline particles in Bayer process

作　　者：白万全[1] 尹中林 倪锋[1] 武国宝 李晓萍 

机构地区：[1]河南科技大学,河南洛阳470000 [2]中国铝业郑州研究院,河南郑州450041

出　　处：《轻金属》2004年第10期11-14,共4页Light Metals

摘　　要：本文对拜耳法铝酸钠溶液种分附聚过程进行了研究 ,采用降温方式 ,利用最小二乘法求出附聚动力学方程为dC/dt=3 .14× 10 1 0 ×exp( -88.14× 10 3/RT)× (C -Ce) 2 ,表观活化能为 88.14kJ/mol。The paper describes the agglomeration process of crystalline particles during precipitation in sodium aluminate solution of Bayer process.It derives aggglomeration dynamics formula dC/dt=3.4×10^(10)×exp(-88.14×10~3/RT)×(C-Ce)~2 with method of least squares in cooling down way.The aggarent activation energy is 88.14kJ/mol.The constant of precipitation rate derived under different temperatures can well match with Arrhenius formula.

关 键 词：铝酸钠溶液 附聚 动力学方程 

分 类 号：TF821[冶金工程—有色金属冶金]