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In the steel industry, a significant amount of waste is frequently generated, the vast majority having a high content of iron and other useful elements; for this reason, it is necessary and recommended that small and powdery industrial waste containing iron be recovered and not stored, within the same manufacturing flows where it was generated following the principles of the circular economy or, where it is not possible (due to limiting factors related to chemical composition, granulation, technological limitations, etc.), recycling is carried out in other industries (e.g. nonferrous, building materials, etc.). Their capitalization and return in the form of by-products in the steel industry or other industrial sectors produces economic and ecological effects. The work presents the possibilities of managing and characterizing some industrial waste with iron content, historically stored, and results on manufacturing flows. [ABSTRACT FROM AUTHOR]