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Substance Flow Analysis of Aluminium in China for 1991-2007 (Ⅰ):Trade of Aluminium from a Perspective of Life Cycle and Its Policy implications

CHEN Weiqiang,SHI Lei,CHANG Xiaoyu,QIAN Yi (Department of Environmental Science and Engineering, Ministry of Environmental Protection Key Laboratory on Eco-industry, Tsinghua University, Beijing 100084, China)  
Based on a framework of stocks and flows which can be used to perform substance flow analyses of metals in the anthroposphere, a series of papers present a quantitative study on trade, loss, production, consumption, and recycling of aluminium in China from 1991 to 2007. In addition, the authors provided a series of policies which would be greatly helpful to make production and utilization of aluminium more sustainable in China. As the first one of the series paper, we investigated import and export of aluminium and changes in structure of aluminium trade of China during 1991-2007 from a perspective of life cycle. Moreover, we provided some policy suggestions on adjustment and optimization of the trade structure of aluminium. Results indicated that China was a net importer of aluminium during 1992-2007, with showing increases in the amount of total net import year by year, i.e., 502×103 tons, 987×103 tons, 2502×103 tons and 6813×103 tons for 1992, 1997, 2002, and 2007, respectively. Regarding the import/export structure, China was increasingly becoming a net importer of bauxite, alumina, and aluminium scrap which could be used as raw materials to produce unwrought aluminium, but a net exporter of unwrought aluminium, aluminium semi-products, and final products. It was suggested that: 1) China should continuously encourage the import of bauxite, alumina, and aluminium scrap in the next several decades for both meeting current demands and serving as long-term strategic storage; 2) China should properly restrict the export and encourage the import of unwrought primary and recycled aluminium, as well as some semi-products, which bear characteristics of high energy consumption ,great environmental burdens but low monetary added value; 3) it is currently not necessary to encourage or restrict the import or export of aluminium embodied in final products, as well as some semi-products such as sheet and foil which are of high monetary added value; 4) the central government should actively support China’s enterprises to go abroad to purchase bauxite mines and aluminium scrap, as well as to operate factories producing alumina, unwrought primary and recycled aluminium. These enterprises would then transport these products back to China.
【Fund】: 國家自然科學基金:“工業共生體系的網絡復雜性研究”(編號:40601037)
【CateGory Index】: F426.32;F224
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?2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved
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