Recycling of ZAM Alloy

To promote sustainability in our in-house MS tube manufacturing project, my team developed a dedicated recycling facility for ZAM (Zn-Al-Mg alloy) slag, a byproduct from the galvanizing bath used to coat steel tubes with a corrosion-resistant Zn-Al-Mg alloy. Previously treated as waste, this slag posed environmental and resource challenges. Our in-house recycling process enabled us to collect, process, and refine the slag, recovering valuable zinc, aluminum, and magnesium for reuse. This closed-loop system minimized material loss, allowing the recycled alloy to be reintroduced into the galvanizing process and repurposed for other applications.

The project’s impact extended beyond galvanizing, as the recycled ZAM alloy was utilized to manufacture high-quality locks and hinges for refrigerators through zinc alloy die casting. This application showcased the material’s versatility and quality post-recycling. By reducing reliance on virgin raw materials, lowering disposal costs, and minimizing environmental impact, the facility delivered significant cost savings while fostering a sustainable ecosystem. Our in-house approach ensured precise control over the recycling process, maintaining the alloy’s integrity for both galvanizing and die-casting applications, demonstrating how innovative recycling can transform waste into valuable components for diverse industrial uses.