International Comparison of Impuritiesmixing and Accumulation in Steel Scrap
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
International Society for Industrial Ecology, Blackwell
Abstract
ENG: The accumulation of impurities in the recycling of steel impacts the quality of secondary steel. Understanding impurity levels is crucial in the context of the proliferation of circular economy policies, expected high recycling rates, and growth of scrap consumption. By assuming the accumulation of impurities to be equal worldwide, the understanding of the extent and variation of the mixing and accumulation was limited
in previous studies, and the factors influencing those variations were not considered. This is a first cross-national comparison of impurity accumulation in recycled steel. In this study, the copper, tin, nickel, chromium, and molybdenum content was analyzed in over 500 samples of electric arc furnace rebars from China, Japan, Vietnam, Ukraine, and the Netherlands (representing northwestern Europe) with an optical emission spectrometer. The impurity content in rebars represents the content of impurities accumulated in steel scrap in the countries studied. The measured content
of impurities was then used to determine the factors influencing the accumulation of
those impurities. It was revealed that the recycling technology, the presence of a market for recovered metals, the quality of the material input, steelmaking practices, and the management of byproducts derived from a legislative or economic context played a role in the impurities content. By communicating on scrap chemical content, the collaboration between the recycling and steel industries could be enhanced in terms of matching the demand and supply and facilitating an increase in the scrap share in steelmaking.
Description
D. Panasiuk: ORCID 0000-0002-7798-0698, B. Sprecher: ORCID 0000-0002-0136-5656
Keywords
industrial ecology, materials management, recycling, scrap, steel, tramp metal, КМЧС (ІПБТ)
Citation
Panasiuk D., Daigo I., Hoshino T., Hayashi H., Yamasue E., Tran D. H., Sprecher B., Shi F., Shatokha V. International Comparison of Impuritiesmixing and Accumulation in Steel Scrap. Journal of Industrial Ecology. 2022. Vol. 26, iss. 3. P. 1040-1050. DOI: 10.1111/jiec.13246.