(1. 中南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410083；2. 金川集團(tuán)有限公司，金昌 737100)
摘 要: 介紹鋁電解機(jī)制對(duì)電解鋁液中形成Al2O3夾雜物的影響，分析鋁液中Al2O3夾雜物形成的機(jī)理，推算CO2對(duì)鋁液擴(kuò)散的質(zhì)量傳遞方程，描述效應(yīng)處理過程對(duì)鋁液中Al2O3夾雜物形成過程的影響。利用Person—Waddington電流效率模型測算電解鋁液中可能形成的Al2O3夾雜物最大值。結(jié)果表明：電解過程生成的Al2O3夾雜物對(duì)鋁液的污染，是短流程工藝影響鋁熔體冶金質(zhì)量的主要根源。
關(guān)鍵字: 電解鋁液；Al2O3夾雜物；CO2；陽極效應(yīng)；冶金遺傳
（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
