Browsing by Author "Barco, Estibaliz"
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Item New method for estimating economic penalties on Hot Briquetted Iron (HBI) due to material degradation during storing(2019-11-26) Rojo, Asier Vicente; Picon, Artzai; Barco, Estibaliz; COMPUTER_VISIONSteelmaking is immersed on continuous development of new steel products with higher performance and lower environmental footprint. This new paradigm places scrap recycling steel manufacturing processes as one of the main alternatives for the steelmaking industry. Using heterogeneous recycled scrap mixtures for building new and more demanding steel products require the use of Hot briquetted Iron (HBI) to reduce process uncertainties process. However, HBI might be stored for long periods of time and is affected by atmospheric corrosion that degrades its initial quality. The present work proposes, for the first time, a methodology to empirically quantify the influence of this degradation phenomenon on the EAF performance by extending the calculation of the Value In Use considerating degradation processes. The proposed equations allow estimating the extra cost induced by HBI degradation during storing periods and help calculating a more precise scrap mixture to deal with the required technical and cost specifications.Item New method for estimating the economic penalties of ferrous scraps in the steelmaking industry due to material degradation during its storage in scrap yards(2020-05-27) Vicente, Asier; Picon, Artzai; Barco, Estibaliz; COMPUTER_VISIONThe ever-increasing pressure on the steelmaking industry to reduce its environmental footprint and achieve higher performance ispushing the sector to continuous improvement of its processes, This new paradigm places steel scrap recycling-based manufacturingprocesses as one of the main alternatives for the steelmaking industry. Using heterogeneous recycled scrap mixtures for producing new andhigher performance steel products requires the use of well characterized scrap to reduce uncertainties of the process. However, ferrousscrap might be stored for long periods of time in scrap yards and be affected by atmospheric corrosion that degrades its initial quality. Inthis paper a new empirical methodology is proposed, which helps quantify the influence of this degradation phenomenon on the Electric ArcFurnace (EAF) performance based on the Value In Use (VIU) of the scrap. The equations proposed allow estimating the extra cost induced bydegradation of ferrous scrap material during storage periods.