Melt Treatment of Copper and Aluminium - The Complex Step Before Casting

摘要

In this paper the today melt treatment techniques for Aluminium and Copper are presented. Emphasis was laid on gas purging, slag treatment and filtration because these techniques are widely spread in both industries. Until now the development of melt treatment techniques always was in step with the demands of the semi finished product producers and also with the demands for environmental safety. But the future holds more challenges. Because of size reduction foils and wire diameters will further decrease. For the Aluminium industry the avoidance of Chlorine is a major point that needs to be solved. For Copper the removal from dissolved elements from scrap charges has priority to avoid the energy intensive refining electrolysis. The principles of melt treatment give both industries guidelines in which direction to proceed and to produce the optimum metal quality.