(1. 中南大学 材料科学与工程学院，长沙 410083；2. 金川集团有限公司，金昌 737100)
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。
关键字: 电解铝液；Al2O3夹杂物；CO2；阳极效应；冶金遗传
（1. School of Materials Science and Engineering, Central South University,Changsha 410083, China;2. Jinchuan Company Limited Group, Jinchang 737100, China）
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.
Key words: electrolytic liquid-Al; Al2O3 inclusion; CO2; anode effect; metallurgical heredity
