International comparison of impurities mixing and accumulation in steel scrap

• DOI: 10.1111/jiec.13246
• Publication Date: 2022-02-18T14:49:21Z
• Authors: Daryna Panasiuk; Ichiro Daigo; Takeo Hoshino; Hideo Hayashi; Eiji Yamasue; Duc Huy Tran; Benjamin Sprecher; Feng Shi; Volodymyr Shatokha
• Keywords: Scrap; Electric arc furnace

Abstract The accumulation of impurities in the recycling steel impacts quality secondary steel. Understanding impurity levels is crucial context proliferation circular economy policies, expected high rates, and growth scrap consumption. By assuming to be equal worldwide, understanding extent variation mixing was limited previous studies, factors influencing those variations were not considered. This a first cross‐national comparison recycled In this study, copper, tin, nickel, chromium, molybdenum content analyzed over 500 samples electric arc furnace rebars from China, Japan, Vietnam, Ukraine, Netherlands (representing northwestern Europe) with an optical emission spectrometer. represents accumulated countries studied. measured then used determine impurities. It revealed that technology, presence market for recovered metals, material input, steelmaking practices, management byproducts derived legislative or economic played role content. communicating on chemical content, collaboration between industries could enhanced terms matching demand supply facilitating increase share steelmaking.