Substance Flow and Stock of Chromium Associated with Cyclic Use of Steel in Japan
スポンサーリンク
概要
- 論文の詳細を見る
Previous studies have pointed out that some quantity of ferritic stainless steel scrap is mixed with carbon steel scrap, thus resulting in the accumulation of chromium in carbon steel products. Chromium substance flow accounts for 97% of its consumption in Japan. This paper describes the analysis chromium substance flow in stainless steel, other alloy steels, and carbon steel in Japan. The analysis was carried out using dynamic modeling. To classify the different kinds of alloys, stainless steel is subdivided into 13Cr, 18Cr, Cr–Ni, and Cr–Ni–Mo. Heat-resistant steel, structural alloy steel, bearing steel, and spring steel are also considered as steel alloys that include chromium. Carbon steel is classified into BOF (basic oxygen furnace) carbon steel and EAF (electric arc furnace) carbon steel to reflect differences in the raw materials from which they are composed. It was found that in-use stocks of chromium in the forms of stainless steel and other alloy steel in 2005 were 3.4 and 0.7 Tg, respectively. Other chromium stock as an alloying element in carbon steel was estimated as being 0.7 Tg in 2005, and it is dissipated in the carbon steel cycle. From the results of the dynamic model, the rates of ferritic stainless steel and other alloy steel recovered as carbon steel were approximately 40 and 80%, respectively, in 2005. Chromium accumulation in EAF carbon steel was dynamically analyzed from 1990 to 2030. On the basis of the assumption that future steel demand will be the same as the current demand, it is predicted that the mean chromium content in EAF carbon steel will gradually increase and reach 0.24% in 2030.
著者
-
Adachi Yoshihiro
Dep. Of Materials Engineering Graduate School Of Engineering The Univ. Of Tokyo
-
Oda Takafumi
Department of Materials Engineering, Faculty of Engineering, The University of Tokyo
-
Daigo Ichiro
Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo
-
Matsuno Yasunari
Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo
-
Adachi Yoshihiro
Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo
関連論文
- Substance Flow and Stock of Chromium Associated with Cyclic Use of Steel in Japan
- In-Use Stock of Copper Analysis Using Satellite Nighttime Light Observation Data
- Assessment of the Recycling Potential of Aluminum in Japan, the United States, Europe and China
- In-use Stock of Steel Estimated by Top-down Approach and Bottom-up Approach
- Dynamic Substance Flow Analysis of Aluminum and Its Alloying Elements
- Development of Methodology for Quantifying Collection Rate of Post-Consumer Products Based on Material Flow of Steel
- Accounting for Steel Stock in Japan
- Dynamic Material Flow Analysis for Stainless Steels in Japan–Reductions Potential of CO2 Emissions by Promoting Closed Loop Recycling of Stainless Steels
- Estimation of the Change in Quality of Domestic Steel Production Affected by Steel Scrap Exports
- Estimation of Steel Stock in Building and Civil Construction by Satellite Images
- Adiponectin receptors, with special focus on the role of the third receptor, T-cadherin, in vascular disease
- WT1 (Wilms' Tumor 1) Peptide Immunotherapy for Renal Cell Carcinoma
- Surgical Treatment for Rheumatoid Forefoot Deformities by Complete Resection Arthroplasty of the Lesser Metatarsophalangeal Joints and Partial Syndactylization
- Calculation model of CO_2 emission by using a population balance model
- Substance Flow and Stock of Chromium Associated with Cyclic Use of Steel in Japan
- In-use Stock of Steel Estimated by Top-down Approach and Bottom-up Approach
- Development of a Dynamic Substance Flow Model of Zinc in Japan
- Estimation of Steel Consumption and Obsolete Scrap Generation in Japan and Asian Countries in the Future
- Accounting for Steel Stock in Japan
- Dynamic Material Flow Analysis for Stainless Steels in Japan-Reductions Potential of CO_2 Emissions by Promoting Closed Loop Recycling of Stainless Steels
- Estimation of the Change in Quality of Domestic Steel Production Affected by Steel Scrap Exports
- Low Temperature Growth of Piezoelectric Films by RF Reactive Planar Magnetron Sputtering : Communication Devices and Materials
- Estimation of Steel Stock in Building and Civil Construction by Satellite Images
- Global Substance Flow Analysis of Indium