Steel has never ceased to be the most important structural material. Steel and cast steel account for more than 92% of total consumption of metals. Unfortunately, this sector generates massive amounts of waste, including iron-bearing types. Substances referred to as waste are subject to rigorous legal regulations the purpose of which is to protect human health and natural environment. Restricting waste generation and utilising the waste already produced are the most fundamental principles of rational use of natural and anthropogenic resources. More and more of metallurgical waste is reclaimed, yet part of it is stored. This paper presents the results of research on waste containing iron (dust, mill scale, sludge) in terms of their environmental impact when stored, the results of the assessment of the quality of water extracts in relation to the legal requirements for the introduction of sewage into waters or to land.Keywords: metallurgical industry, environment, waste containing iron
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