(東北大學(xué) 多金屬共生礦生態(tài)化冶金教育部重點實驗室，沈陽 110819)
摘 要: 通過測定反應(yīng)后懸濁液pH值和剩余AlN量，考察了反應(yīng)溫度、反應(yīng)時間等因素對鋁灰中AlN水解程度的影響。結(jié)果表明：鋁灰會與水反應(yīng)放出氨氣；在相同溫度下，隨著反應(yīng)時間的延長，溶液pH值會逐漸升高直至達到最大值；溫度越高，水解反應(yīng)越充分；在298 K溫度下，液固比對水解pH值有一定影響，攪拌在一定程度上能加速反應(yīng)進程，而粒度對水解反應(yīng)沒有明顯影響。與AlN粉末和AlN陶瓷塊體相比較，鋁灰中的AlN在水解反應(yīng)活性及生成物等方面均存在差別。
關(guān)鍵字: 鋁灰；AlN；水解
（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
