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General comment ecoQuery: https://ecoquery.ecoinvent.org/3.10/cutoff/dataset/22843/documentation
This activity represent the recycling of ferrous scrap in an electric arc furnace (EAF) in Switzerland, producing low-alloyed electric carbon steel. The acitivty starts when scrap arrives at the recycling facility and ends with secondary steel (billets) produced.;The major feedstock for the EAF is ferrous scrap, which may comprise internal scrap from inside the steelworks, cut-offs from steel product manufacturers (e.g. the automotive industry), post-consumer scrap, and scrap recovered from other waste treatment processes (e.g. municipal solid waste incineration). The production of steel in the EAF process is a discontinuous process, which involves raw material handling and storage, furnace charging with/without scrap preheating, EAF scrap melting, steel and slag tapping, ladle furnace treatments for quality adjustment, slag handling and continuous casting. The actual melting is done by lowering graphite electrodes into the scrap until they strike an arc that melts the scrap. ;The steel produced in this activity process is “low-alloyed”, containing a maximum share of 5% of alloying elements. This steel is mostly used in the construction industry.;Literature: Melanie Haupt, Thomas Kägi, Stefanie Hellweg, 2018, Life cycle inventories of waste management processes., Data in Brief, 19, 1441-1457. DOI: 10.1016/j.dib.2018.05.067
This activity starts with 'Iron scrap, sorted, pressed' being available to the recycling facility (electric arc furnance).
This activity ends with the secondary steel (billets) produced. Wood waste generated from single-use packaging material for input materials has been omitted. |
