摘要
本文采用酸浸法直接提取煤矸石中Al2O3,通过对助溶剂与样品质量比、盐酸浓度、浸取时间和浸取温度四个影响因素进行单因素试验,得出各因素对Al2O3浸取率均成正比的影响规律,通过正交试验筛选出适宜浸取条件。同时采用沸腾回流装置对浸取条件进行优化,最终确定最优经济浸取条件为:助溶剂/样品质量比0.22、盐酸浓度5mol/L、浸取时间120min、浸取温度108℃。铝的浸取率可达到70.40%。
This paper use the method that is direct acid leaching of aluminum from coal gangue. Through single factor experiments for NaF/gangue ratio, the concentration of HCI, the time treated by HCI and temperature, we have all been the law of A12O3 leaching rate： A12O3 leaching rate and the factors are in direct proportion to the relationship between. A orthogonal designs based on single-factor has been texted to Filter out the better leaching results. The paper continue to use the boiling backflow system to optimize the conditions, after a comprehensive analysis of the economic costs and ultimately determine the optimal reaction conditions for leaching conditions are as follows： NaF/gangue ratio 0.22 , the concentration of HCI 5 mol/L, the time treated by HC1 120min and temperature 108℃. The dissolving ratio of alumina could be up to 70.40% at the best technical condition.
出处
《四川有色金属》
2011年第4期35-39,共5页
Sichuan Nonferrous Metals
关键词
煤矸石
AL2O3
酸浸
煅烧活化
助溶剂
浸取率
coal gangue
alumina
acid leach method
activation - burning
cosolvent
the dissolving ratio
