Influence Factors of Aluminum-Slag Interfacial Reaction Under Electric Field

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2017,（8）
• 页码范围: 753-761
• 页数: 9页
• 语种: 英文
• DOI: 10.1007/s40195-017-0574-7

摘要

The interfacial reaction between aluminum melt and molten slag under an electric field plays a significant role in aluminum electro-slag refining.Here we studied this interfacial reaction within 680 and 820 ℃ under an electric field between 0 and 9 V.The evolution of aluminum composition was analyzed by inductively coupled plasma atomic emission spectroscopy.The dominant factor during the interfacial reaction was identified through orthogonal experiments,in which the slag-to-aluminum mass ratio,initial silicon concentration,electric voltage,reaction time,and temperature were selected as the influence factors.The greatest influence factor on the interfacial reaction was found to be the reaction time.Also,single-factor experiments revealed that the reaction kinetic processes largely obeyed an irreversible kinetic model,and the silicon removal efficiency was enhanced by increasing the voltage and slag/metal ratio.