Optimization of Dross Formation in Twitch Aluminum Scrap Melting Using Boric Acid Washing: A Taguchi Method Approach

Dross formation during the melting of twitch aluminium scrap using boric acid washing method, was investigated employing a Taguchi-based approach. The study aimed to analyse the impact of different treatment durations with a 1M concentration of boric acid on dross formation characteristics. Experimental trials involved treating twitch aluminium scrap samples with boric acid solutions for 15 to 60 minutes. Subsequently, dross formation characteristics were analysed using statistical techniques based on Taguchi analysis. Results unveiled significant variations in dross formation among treatment durations, indicating that longer treatment times led to decreased dross formation, particularly notable beyond the 30-minute mark. Taguchi's analysis confirmed the significance of treatment duration on dross formation, underscoring the effectiveness of the boric acid washing method in reducing dross formation during twitch aluminium scrap melting. This study offers valuable insights into optimising the boric acid washing method to diminish dross formation during twitch aluminium scrap melting, thereby enhancing efficiency and quality in aluminium recycling processes. Notably, the aim of the research systematically investigate the influence of treatment duration with a 1M concentration of boric acid on dross formation characteristics, providing practical guidance for implementing the boric acid washing method in industrial settings. Keywords: Dross, twitch aluminium scrap, boric acid, Taguchi analysis, recycling, waste management.