电解铝液中Al2O3夹杂物的形成机理
来源期刊:中国有色金属学报2007年第12期
论文作者:贺永东 张新明 陈明安
文章页码:2046 - 2053
关键词:电解铝液;Al2O3夹杂物;CO2;阳极效应;冶金遗传
Key words:electrolytic liquid-Al; Al2O3 inclusion; CO2; anode effect; metallurgical heredity
摘 要:介绍铝电解机制对电解铝液中形成Al2O3夹杂物的影响,分析铝液中Al2O3夹杂物形成的机理,推算CO2对铝液扩散的质量传递方程,描述效应处理过程对铝液中Al2O3夹杂物形成过程的影响。利用Person—Waddington电流效率模型测算电解铝液中可能形成的Al2O3夹杂物最大值。结果表明:电解过程生成的Al2O3夹杂物对铝液的污染,是短流程工艺影响铝熔体冶金质量的主要根源。
Abstract: The effect of mechanism of Al electrolyte on the formation of Al2O3 inclusion in electrolytic liquid-Al was introduced. The mechanism of formation of dioxide inclusions in liquid-Al was analyzed. A mass transporting equation of CO2 diffusion into liquid-Al was proposed. The formation of Al2O3 inclusion during manipulating anode effect was described. With Person—Waddington model, the probable maximum dioxide inclusions in electrolytic liquid-Al was quantitative measured. It is suggested that the alumina contained in the electrolytic liquid-Al is the main source of debasing metallurgical quantity.
基金信息:国家重点基础研究发展规划资助项目