Emissions and environmental compliance are growing concerns in the use of aluminium melting furnaces. Combustion-based furnaces release CO₂ and other pollutants such as nitrogen oxides (NOₓ) and particulate matter. Governments and regulatory bodies have set stringent limits on emissions, pushing manufacturers to adopt cleaner technologies. Filters, afterburners, and scrubbing systems are commonly employed to reduce harmful outputs. Additionally, electric melting systems, powered by renewable energy sources, are gaining traction as an eco-friendly alternative.
The aluminium scrap recycling process heavily relies on melting furnaces. When recycling aluminium, maintaining purity is essential to ensure that the reclaimed metal meets industry standards. Furnaces must be equipped to handle contaminated or coated scrap, often requiring pre-treatment stages like de-coating or salt fluxing to remove impurities. Advanced rotary furnaces and tilting reverberatory designs are particularly suited to these demanding applications due to their mixing capabilities and temperature uniformity.