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30卷    第4期    总第253期    2020年4月

[PDF全文下载]        [Flash在线阅读]

    

文章编号:1004-0609(2020)-04-0920-07
铝灰渣中AlN水解行为及其多元非线性回归分析
吕帅帅,倪 威,倪红军,朱杨杨

(南通大学 机械工程学院,南通 226019)

摘 要: 通过对铝灰渣水解反应过程中组分及其含量变化的研究,提出铝灰渣中AlN含量的修正公式;根据AlN含量和悬浊液pH值的测定,考察时间、温度、转速等水解参数对AlN水解速率的影响并对其进行多元非线性回归分析。结果表明:升高温度能降低铝灰渣中AlN含量并降低悬浊液pH值;延长时间可有效促进AlN的水解,同时在2h内悬浊液pH值迅速提升至高位;转速对AlN水解速率和悬浊液pH值无明显影响。总体而言,AlN含量比悬浊液pH值更能客观表征铝灰渣中AlN水解速率。对水解参数及修正后铝灰渣中AlN含量进行多元非线性回归分析并二次简化,发现理论值与实验值相对误差≤±8.65%。

 

关键字: 铝灰渣;AlN;水解;多元非线性回归分析;温度;转速;时间

Hydrolysis behavior of AlN in aluminum dross and its multivariate nonlinear regression analysis
Lü Shuai-shuai, NI Wei, NI Hong-jun, ZHU Yang-yang

School of Mechanical Engineering, Nantong University, Nantong 226019, China

Abstract:The modified equation of AlN content in aluminium dross was put forward by studying the change of each component and its content in the process of aluminium dross hydrolysis reaction. The effects of hydrolysis parameters such as time, temperature and rotational speed on the hydrolysis rate of aluminium dross were investigated according to the measure of AlN content and pH of suspension. The hydrolysis parameters and the modified content of AlN in aluminium dross were analyzed by multivariate nonlinear regression analysis. The results show that the AlN content in the aluminum dross and the pH value of the suspension reduce with the increase of temperature. The hydrolysis of AlN can be effectively promoted with the prolongation of time, and the pH value of the suspension is simultaneously raised to a high level within 2 h. The rotational speed has no obvious effect on the hydrolysis rate of AlN and the pH value of suspension. Generally speaking, the way of the content of AlN is more objective than the pH value of suspension to characterize the hydrolysis rate of AlN in aluminum dross. Multivariate nonlinear regression analysis and secondary simplification on the hydrolysis parameters and the modified content of AlN in aluminium dross show that the relative error between the theoretical value and the experimental value is within ±8.65%, which has a certain guiding significance for the prediction and control of the modified content of AlN in aluminum dross during the hydrolysis process.

 

Key words: aluminum dross; AlN; hydrolysis; multivariate nonlinear regression analysis; temperature; rotational speed; time

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