During the steel-making process, large quantities of various by-products are produced, mainly in the form of dust and scale. However, these by-products contain valuable iron and must be recycled to liberate the mineral. This is done through the use of a pug mill and briquetter. A binding agent, typically molasses or sodium silicate, is fed into the pug mill and mixed with the by-products, creating a homogenous mixture. Because of the abrasiv

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