摘要
根据真空氯化亚铝歧化法提取铝的机理研究,总结了提取过程的反应流程,提出影响铝的提取率的主要因素是氯化阶段的副反应,影响铝产品纯度的主要因素是歧化阶段CO的歧化反应和铝与CO的二次反应。以氧化铝真空碳热还原的终产物为原料时,铝的提取率和纯度显著提高。据此提出了真空氯化亚铝歧化法从氧化铝中提取铝的工艺流程,通过多次氯化亚铝歧化法提取和精炼,理论上铝的提取可达到完全,铝的纯度可达到理想值。
From the mechanism of the extraction aluminum by the disproportionation process of AlCl in vacuum, the reaction flow charts of the process were obtained. It was proposed that the effect of main factor on the extraction rate of aluminum was the side reaction in the chlorination stage, and the effect of the main factor on the aluminum purity were the disproportionation of CO and the secondary reactions between aluminum and CO in the disproportionation stage. As the final products of the carbothermal reduction of alumina were used as the raw materials, the extraction rate and the purity of aluminum were increased significantly. Therefore the flow charts of the AlCl disproportionation process were designed, in which aluminum could be extracted completely and the purity of aluminum could achieve ideal value theoretically by repeatedly using the process to extract and refine.
出处
《轻金属》
CSCD
北大核心
2014年第3期32-34,58,共4页
Light Metals
基金
国家自然科学基金委资助项目(51364020)
云南省科技厅资助项目(KKSY201207016)
关键词
铝
氯化亚铝
氧化铝
歧化
真空
aluminum
AlCl
alumina
disproportionation
vacuum
