The pie chart illustrating mill scale usage across various industries highlights the diverse applications of this byproduct of steel production. The largest segment, representing 30%, is dedicated to recycling within steel production. This significant portion underscores the value of mill scale in recapturing iron content and reducing waste, making the steelmaking process more resource-efficient and cost-effective. Cement production claims the second-largest share at 25%, reflecting mill scale's role as a crucial ingredient in clinker production. By providing iron oxide, it acts as a fluxing agent, aiding in the formation of essential clinker phases and enhancing the overall efficiency of cement kilns.

Ferroalloy production, with a 15% share, utilises mill scale to supply iron, reducing the reliance on more expensive raw materials and improving economic viability. The construction industry, accounting for 10%, benefits from mill scale by incorporating it into concrete, enhancing density and strength. Another 10% is used in sintering processes within steelmaking, where mill scale helps agglomerate fine particles into larger lumps suitable for blast furnaces. Pigment production, representing 5%, leverages the high iron content of mill scale for producing iron oxide pigments used in various applications, including paints and coatings. The remaining 5% encompasses other uses, highlighting the versatility of mill scale in different industrial applications. This distribution not only demonstrates mill scale's economic and environmental benefits but also its integral role in multiple manufacturing processes.