日本金属学会誌

J. Japan Inst. Metals, Vol. 75, No. 6 (2011),
pp. 327-331

Impact Analysis of Copper Price on Copper Scrap Recovery

Kengo Kawahara, Ichiro Daigo, Yasunari Matsuno and Yoshihiro Adachi

Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656

Abstract:

Recently, copper price reached the highest level ever. It is expected that the rise of copper price becomes a strong incentive for recovering copper scrap from end-of-life products. Therefore, in this paper, we aimed to analyze the relation between copper price and the amount of recovered copper scrap in Japan. A dynamic material flow analysis (MFA) of copper was conducted to estimate the amount of copper discarded in the end-of-life products during 1980-2008 in Japan. It was found that the recovery rates of copper scrap have risen with the increase in copper price, especially after 2003. A multiple linear regression model was adopted to explain the amount of recovered copper scrap during these three decades, in which copper price, the amount of copper discarded in the end-of-life products, etc. played important roles.


(Received 2010/12/27)

Keywords:

copper, material flow analysis, copper price, scrap recovery


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