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中文摘要：
根据生命周期理论及技术框架，基于3种能源利用的生产方案，对目前中国皮江法炼镁的环境负荷进行定量分析和评价．研究表明，冶炼过程使用的燃料是皮江法炼镁污染物排放的主要来源，其环境负荷主要体现在温室效应和酸化效应．皮江法炼镁采用不同能源利用方案产生的环境负荷存在较大差别，其中直接燃煤生产单位原镁（方案1）的总体环境负荷最大；采用发生炉煤气的总体环境负荷与方案1相比下降9．3％；采用焦炉煤气的总体环境负荷则下降29．5％．
英文摘要：
Based on three scenarios of different energy usage strategies, a quantitative evaluation of the environment load caused by magnesium production using the Pidgeon process in China was carried out according to the theory and framework of LCA study. The results showed that the fuel used in the process was the major contributor to the pollutants emission of magnesium production. Global warming potential and acidification potential make the main contribution to the accumulative environmental impact. The different fuel use strategies in the practice of magnesium production caused many different impacts on the environmental performance. The accumulative environmental load of coal burned directly （Scenario 1） was highest, and that of Scenario 2 and Scenario 3 decreased respectively by 9.3 % and 29.5 % comparing with the result of Scenario 1.
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