Copper slag, a by‑product of copper smelting, is increasingly repurposed as a high‑performance aggregate in construction, cement manufacturing, and metal casting. The Copper Slag market size was estimated at USD 2.6 billion in 2025, and industry analysts project a CAGR of 7.2% through the 2026‑2033 forecast period, driven by circular‑economy mandates, rising demand for sustainable building materials, and cost‑effective alternatives to natural aggregates. Key forces shaping the market include stricter waste‑management regulations, advancements in slag‑processing technologies that enhance its pozzolanic properties, and shifting consumer preferences toward greener infrastructure. The Asia‑Pacific region remains the largest market, accounting for over 45% of global consumption, while Latin America emerges as the fastest‑growing region, propelled by expanding cement capacity and infrastructure projects.