Rotary Aluminum Decoating Furnace for Paint Removal

Decoating has become an essential step in modern aluminum recycling because coated aluminum scrap cannot be melted efficiently without pretreatment. When painted beverage cans or coated aluminum materials are fed directly into a melting furnace, the organic coatings produce excessive slag, accelerate metal oxidation, reduce ingot quality, and increase fuel consumption. Removing these coatings in advance helps maximize aluminum recovery, improve metal purity, and lower overall production costs.

What Is an Aluminum Can Decoating Furnace ?
★ An Aluminum Can Decoating Furnace, also known as a UBC (Used Beverage Can) Decoating Furnace, is a thermal pre-treatment system designed to remove paint, ink, lacquer, plastic films, and other organic coatings from aluminum scrap before melting. The furnace is suitable for a wide variety of coated metal materials, including used beverage cans (UBCs), painted aluminum scrap, aluminum profiles, electronic waste, insulated copper wires, and selected battery-related materials requiring thermal pretreatment. Rather than burning the coatings in a melting furnace, the system uses controlled pyrolysis at 450–550°C to decompose organic materials while keeping the aluminum below its melting point. Different coating types and thicknesses can be processed by adjusting the operating temperature and residence time to achieve optimal removal efficiency. The result is cleaner scrap with higher recycling value and improved smelting performance.

Our Aluminum Decoating Furnace adopts an internally heated rotary design that continuously tumbles the material, ensuring uniform heat transfer and consistent paint removal. During pyrolysis, the released gases are collected under negative pressure and returned to the combustion chamber as supplementary fuel via a heat recovery system. This design significantly reduces external fuel consumption, minimizes VOC emissions, and improves overall thermal efficiency.

To further enhance environmental performance, the aluminum can decoating system integrates a thermal oxidizer and a high-temperature dust collection unit to treat exhaust gases generated during pyrolysis. Intelligent PID temperature control automatically regulates the heating process, maintaining stable operating temperatures and preventing uneven heating or incomplete coating removal. Automatic feeding, sealed material transfer, and PLC-based operation reduce manual intervention while enabling continuous production and remote monitoring.

Whether operating as a standalone decoating furnace or as part of a complete aluminum recycling line, the system delivers cleaner feedstock for downstream melting. By reducing impurities before smelting, recyclers can improve aluminum recovery, produce higher-purity ingots, reduce energy consumption, and increase the overall profitability of aluminum recycling operations.

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