【摘要】 为了解决高纯度铝熔体精炼时传统固体精炼剂残留于铝液中，而使用氩、氯混合气体时又存在污染设备与环境及精炼效果不好的问题，研究了一种生产电子铝箔用高纯度铝熔体去除氧化铝夹杂物的高效环保新精炼方法，对比了新、旧精炼方法的效果。新精炼方法不是用氩、氯混合气体在保温炉内或(与)在线精炼熔体，而是在保温炉中用氩气作为喷吹介质、用合适的无污染的重熔型精炼剂去除熔化炉中熔体带来的及转入保温炉过程中新生的γ-氧化铝；仍然用氩气作为喷吹介质、用适量还原型精炼剂还原分解铝锭中带来的α-氧化铝；通过在线的双转子除气箱去除熔体中大部分氢。该方法不但能除掉γ-氧化铝、而且能除掉α-氧化铝，从而显著减少高纯电子铝箔针孔数量。更多还原

【Abstract】 To address the concerns regarding solid refining agent residues in high-purity aluminum melt during refining, as well as the issues of equipment corrosion, environmental pollution, and insufficient refining efficiency associated with using argon-chlorine mixed gas, a novel, efficient, and environmentally friendly refining method has been developed for removing alumina inclusions from high-purity aluminum melt used in electronic aluminum foil production. The effectiveness of this method was compared to conventional approaches. In the new process, instead of employing argon-chlorine mixed gas for refining in the holding furnace and/or inline treatment, argon gas is used as the injection medium with a suitable non-polluting remelting-type refining agent to remove γ-alumina originating from the melting furnace or formed during transfer to the holding furnace. Subsequently, still using argon, an appropriate reducing-type refining agent decomposes α-alumina introduced by aluminum ingots. Finally, most hydrogen in the melt is eliminated via an inline dual-rotor degassing unit. This method not only removes both γ-alumina and α-alumina but also significantly reduces pinholes in high-purity electronic aluminum foil.更多还原