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Strategies of Materials Industry to Changes of Metallic Mineral Resources and Environment of the Earth

Published online by Cambridge University Press:  24 February 2012

Yu Wu
Yu Wu*
Affiliation:
Department of Electronics and Information Engineering (0903), Huazhong University of Science and Technology, Wuhan 430074, P.R. China
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Abstract

With the impending depletion of mineral resources and a worsening environment, the need to enhance energy efficiency and reduce emission of CO2 gas has become a serious global issue. This paper discusses the current condition of metallic ore resources, then lays emphasis on the counter measure of metallic materials processing. The principal metallic materials are iron and aluminum, and in the scrap of these materials there contains metallic resources and deposited huge energy. Through the recycling of the scrap metal, we can reduce the energy consumption on the extraction of these materials and decrease the emission of CO2 gas. The energy consumed in manufacturing products by using reclaimed raw aluminum is only 4.9% of that using new raw materials, and as for iron and steel, the data is 40.7%. In the manufacturing of metal components, while the impurity element content is rigorously restricted in the plastic forming method, the casting method has a much larger permissible range. Thus, remelting and casting is a more appropriate method in the recycling of metallic materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1380 , 2012 , imrc2011-1380-s21-full004
Copyright
Copyright © Materials Research Society 2012

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References

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