中文摘要：

采用热力学计算和动力学模拟以及X射线衍射,扫描电镜的检测手段,对Al N真空条件下的氯化歧化反应进行了研究。热力学计算结果表明：系统压力在10~100 Pa时,Al N的氯化反应起始温度为1428 K,并且冷凝温度必须降低到1064 K以下,才能分解出金属Al;动力学模拟表明：Al Cl3分子与Al N有较强的化学吸附,易发生反应;实验结果表明：温度越高,原料的失重率和金属Al的直收率越大,保温时间延长,也有利于反应的充分进行。实验最终可以制得20~300μm,纯度达99.28%以上球形度完好的铝珠。

英文摘要：

The chlorination disproportionation of Al N in vacuum was mathematically modeled,theoretically analyzed in thermodynamic,dynamically simulated with software CASTEP code,and experimentally evaluated. The influence of the reaction conditions,including the temperatures of reaction and condensation,reaction time and pressure,on the recovery rate of Al was investigated with X-ray diffraction energy dispersive spectroscopy and scanning electron microscopy. The calculated results show that at 10 ~ 100 Pa,the Al N chlorination started above 1428 K,and only below 1064 K the metallic Al could be condensed. The dynamic simulation reveals that the Al N surfaces strongly chemisorb and easily react with Al Cl3 molecules. The experimental results show that the higher temperature and longer temperature holding time resulted in more sufficient reaction,that is,greater rates of Al-recovery and weight loss of materials. Al-spheres,20 ~ 300 μm in diameter with the purity higher than 99. 28%,were extracted.