( 1. 江西理工大學(xué) 材料與化學(xué)工程學(xué)院，贛州 341000；
2. 東北大學(xué) 材料與冶金學(xué)院， 沈陽 110004)
摘 要: 研究了微波作用下鋁酸鈣爐渣非等溫浸出動(dòng)力學(xué)， 考察了不同微波輻射功率對爐渣中氧化鋁浸出率的影響以及相應(yīng)微波功率下反應(yīng)體系溫度隨時(shí)間的變化規(guī)律。結(jié)果表明： 該浸出動(dòng)力學(xué)過程的控制步驟為界面化學(xué)反應(yīng)控制， 表觀反應(yīng)活化能為40 kJ/mol左右； 微波作用可改變反應(yīng)的頻率因子，對反應(yīng)活化能影響不明顯； 隨著微波輻射功率的增大， 頻率因子增加， 宏觀表現(xiàn)出微波功率的增加對反應(yīng)有促進(jìn)作用。
關(guān)鍵字: 鋁酸鈣爐渣； 浸出； 動(dòng)力學(xué)； 活化能
（ 1. School of Materials and Chemical Engineering,
Jiangxi University of Science and Technology, Ganzhuo 341000, China;
2. School of Materials and Metallurgy,
Northeastern University, Shenyang 110004, China）
Abstract: The non-constant temperature leaching kinetics of calcium aluminate slag under microwave radiation was studied. The effects of microwave radiation power on the leaching rate of alumina and temperature of reaction system were determined. The results show that under the action of the microwave radiation heating, the leaching rate of alumina and the temperature of systems increase with increasing power of microwave radiation. Below solution boiling point, reacting system is a non-constant temperature process. The leaching ratio is controlled by chemical reaction. The apparent activation energy is about 40 kJ/mol. Microwave increases the frequency factor of reaction with the microwave power increasing, while the apparent activation energy of reaction has hardly been changed, which macroscopically demonstrates that the increase of the microwave power promotes the reaction.
Key words: calcium aluminate slag; leaching; kinetics; activation energy
