Substance Flow and Stock of Chromium Associated with Cyclic Use of Steel in Japan

摘要: Previous studies have pointed out that some quantity of ferritic stainless steel scrap is mixed with carbon scrap, thus resulting in the accumulation chromium products. Chromium substance flow accounts for 97% its consumption Japan. This paper describes analysis steel, other alloy steels, and The was carried using dynamic modeling. To classify different kinds alloys, subdivided into 13Cr, 18Cr, Cr–Ni, Cr–Ni–Mo. Heat-resistant structural bearing spring are also considered as alloys include chromium. Carbon classified BOF (basic oxygen furnace) EAF (electric arc to reflect differences raw materials from which they composed. It found in-use stocks forms 2005 were 3.4 0.7 Tg, respectively. Other stock an alloying element estimated being Tg 2005, it dissipated cycle. From results model, rates recovered approximately 40 80%, respectively, 2005. dynamically analyzed 1990 2030. On basis assumption future demand will be same current demand, predicted mean content gradually increase reach 0.24%