MS Mill scale

Mill scale, despite its high iron content (68%-72%), is classified as industrial waste primarily due to contamination with water and oil during the rolling process. In steel plants, most mill scale is recycled into the production of iron ore sinter or pellets, which are subsequently used in iron-making furnaces. It also serves as a coolant in steel-making furnaces. Additionally, mill scale is recycled by briquetting it with a binder.

Moreover, mill scale is utilized as a raw material in granular refractory. When this refractory is cast and preheated, the mill scale facilitates the escape of evaporating water vapor, preventing cracks and ensuring a strong monolithic structure.