铝灰中AlN的水解行为
来源期刊：中国有色金属学报2012年第12期
论文作者：姜澜 邱明放 丁友东 苏楠 姚泉
文章页码：3555 - 3561
关键词：铝灰；AlN；水解
Key words：aluminum dross; AlN; hydrolysis
摘 要：通过测定反应后悬浊液pH值和剩余AlN量，考察了反应温度、反应时间等因素对铝灰中AlN水解程度的影响。结果表明：铝灰会与水反应放出氨气；在相同温度下，随着反应时间的延长，溶液pH值会逐渐升高直至达到最大值；温度越高，水解反应越充分；在298 K温度下，液固比对水解pH值有一定影响，搅拌在一定程度上能加速反应进程，而粒度对水解反应没有明显影响。与AlN粉末和AlN陶瓷块体相比较，铝灰中的AlN在水解反应活性及生成物等方面均存在差别。
Abstract: The influences of reaction temperature and time and other factors on the hydrolysis of AlN in aluminum dross were investigated by measuring the pH value of suspension and the AlN content in the reaction products. The results show that ammonia will release from the solution of aluminum dross immersed in deionized water. At the same hydrolysis temperature, pH value increases up to equilibrium with time prolonging. With increasing the hydrolysis temperature, AlN in aluminum dross will react more thoroughly. At 298 K, the alteration of liquid-solid ratio will result in the change of pH value, and stirring can accelerate the process to some extent, while the particle size has less effect on the hydrolysis. Compared with AlN powder and AlN bulk ceramic, there are great differences in hydrolysis reaction activity and products.
姜 澜，邱明放，丁友东，苏 楠，姚 泉
(东北大学 多金属共生矿生态化冶金教育部重点实验室，沈阳 110819)
摘 要：通过测定反应后悬浊液pH值和剩余AlN量，考察了反应温度、反应时间等因素对铝灰中AlN水解程度的影响。结果表明：铝灰会与水反应放出氨气；在相同温度下，随着反应时间的延长，溶液pH值会逐渐升高直至达到最大值；温度越高，水解反应越充分；在298 K温度下，液固比对水解pH值有一定影响，搅拌在一定程度上能加速反应进程，而粒度对水解反应没有明显影响。与AlN粉末和AlN陶瓷块体相比较，铝灰中的AlN在水解反应活性及生成物等方面均存在差别。
关键词：铝灰；AlN；水解
JIANG Lan, QIU Ming-fang, DING You-dong, SU Nan, YAO Quan
(Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Ministry of Education,
Northeastern University, Shenyang 110819, China)
Abstract:The influences of reaction temperature and time and other factors on the hydrolysis of AlN in aluminum dross were investigated by measuring the pH value of suspension and the AlN content in the reaction products. The results show that ammonia will release from the solution of aluminum dross immersed in deionized water. At the same hydrolysis temperature, pH value increases up to equilibrium with time prolonging. With increasing the hydrolysis temperature, AlN in aluminum dross will react more thoroughly. At 298 K, the alteration of liquid-solid ratio will result in the change of pH value, and stirring can accelerate the process to some extent, while the particle size has less effect on the hydrolysis. Compared with AlN powder and AlN bulk ceramic, there are great differences in hydrolysis reaction activity and products.
Key words:aluminum dross; AlN; hydrolysis
