
Aluminium Scrap Melting Cum Holding Furnace
An "Aluminium Scrap Melting cum Holding Furnace" is a crucial piece of industrial equipment used in the recycling and foundry industries. As the name suggests, it combines two primary functions: melting aluminium scrap and then holding the molten metal at a precise temperature before casting or further processing.
- Melting : It efficiently melts various forms of aluminium scrap (e.g., used beverage cans, automotive parts, extrusion scrap, dross) into molten aluminium.
- Holding : Once melted, the furnace maintains the molten aluminium at a stable, pre-determined temperature, ensuring it's ready for casting or other applications without solidifying or overheating. This consistency is vital for producing high-quality cast products.
Functions :
- Specialized Design :
These furnaces are engineered for high-volume operations, often with a structure that optimizes space and energy usage. - Energy Efficiency :
Modern designs incorporate advanced insulation, heat recovery systems (like recuperators or regenerative burners), and optimized combustion to minimize energy loss and reduce operational costs. - Recycling Capability :
They are specifically designed to handle contaminated aluminium scrap, making them integral to aluminium recycling processes. This contributes to resource conservation and waste reduction. - Precise Temperature Control:
Equipped with sophisticated temperature control systems to maintain the aluminium at its optimal melting and holding temperatures (typically between 660°C to 750°C). This prevents issues like dross formation and ensures metal quality. - Automation :
Many furnaces feature automation for charging scrap, temperature regulation, and molten metal discharge, enhancing efficiency, consistency, and safety. - Safety Features :
Includes temperature sensors, automatic shutoff systems, protective barriers, and often features like spill sensors for broken crucibles. - Fuel Options :
Can be fueled by various sources, including natural gas (PNG), liquefied petroleum gas (LPG), fuel oil (FO), light diesel oil (LDO), and even biomass or electricity. - Loading and Discharging :
May have manual or auto-pusher loading systems and hydraulic tilting mechanisms for easy and safe molten metal discharge. - Material Handling :
Often designed with features that facilitate easy cleaning and maintenance.
Key Features and Design Considerations :
Fuel - PNG / LPG / FO / LDO
Metal Dischargee - Hydraulic
Loading - Auto Pusher / Manual
Melting Capacity range - 3 Ton to 5 Ton per Hour