Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第11卷    第6期    总第45期    2001年12月

[PDF全文下载]        

    

文章编号:1004-0609(2001)06-1136-04
氧化铝生产种分过程Rpeq的测定及其与降温制度的关系
尹周澜, 刘吉波, 张平民, 陈启元, 李  洁

(中南大学 化学化工学院, 长沙 410083)

摘 要:    通过对某氧化铝厂种分车间实际生产数据的采集和处理,由铝酸钠溶液种分过程反应速率方程得到了种分过程55.5℃和60℃的Rpeq分别为0.593和0.624,并由Rp随时间变化的方程计算了不同温度制度下Rp及(Rp-Rpeq)随时间变化的关系,讨论了生产过程中温度控制的基本原则,提出适当的中间降温是提高种分过程反应速率及保证良好产品质量的有力措施。

 

关键字:    铝酸钠溶液; 种分过程; 降温制度

Measurement of Rpeq in practical precipitation process
of alumina refinery and relation of Rpeq
with temperature-drop program
YIN Zhou-lan, LIU Ji-bo, ZHANG Ping-min, CHEN Qi-yuan, LI Jie

College of Chemistry and Chemical Engineering,
Central South University,  Changsha 410083, P.R.China

Abstract:The important parameter Rpeq was estimated to be 0.593 and 0.624 at 55.5℃ and 60℃ during the practical Bayer precipitation process from the kinetic equation of sodium aluminate precipitation. The relation of Rp and (Rp-Rpeq ) with time on different temperature-drop program was determined with the data available from the equation of variation of Rp via time. By the analysis of that, it was concluded that a proper temperaturedrop program is the guarantee of quick precipitation of the product and high quality of the product.

 

Key words:   aluminate liquor; precipitation process; temperature decreasing program

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com