The global fused magnesia market size was worth around USD 2.15 billion in 2024 and is predicted to grow to around USD 3.85 billion by 2035 with a compound annual growth rate (CAGR) of 5.44% from 2025 to 2035. The robust demand for fused magnesia from the refractories sector, along with the growing digital transformation of traditional industries, is driving the global fused magnesia market.