Assessing environmental impact of magnesium production using Pidgeon process in China  

作　　者：高峰 聂祚仁 王志宏 龚先政 左铁镛 

机构地区：[1]College of Materials Science and Engineering,Beijin g University of Technology

出　　处：《中国有色金属学会会刊：英文版》2008年第3期749-754,共6页Transactions of Nonferrous Metals Society of China

基　　金：Project(50525413) supported by the National Natural Science Foundation of China;Project(2006BAE04B09-6) supported by National Key Technology R&D Program

摘　　要：Based on the practice of magnesium production in China, a quantitative evaluation of the environment impact was carried out according to the theory and framework of life cycle assessment(LCA) study. The major gaseous pollutants including CO2, SO2, NOx, CH4, HF and particulates were calculated. The accumulative environmental performances of different energy use strategies and the characterization results, including abiotic depletion potential(ADP), global warming potential(GWP), acidification potential(AP) and human-toxicity potential(HTP) were compared. The results show that the direct emission of fuel combustion in the process is 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 cause much different impacts on the environmental performance. The accumulative environmental impact of coal burned directly is the highest, and that of producer-gas comes to the next, while that of coke-oven gas is the lowest.Based on the practice of magnesium production in China, a quantitative evaluation of the environment impact was carried out according to the theory and fi＇amework of life cycle assessment（LCA） study. The major gaseous pollutants including CO2, SO2, NO/, CH4, HF and particulates were calculated. The accumulative environmental performances of different energy use strategies and the characterization results, including abiotic depletion potential（ADP）, global warming potential（GWP）, acidification potential（AP） and human-toxicity potential（HTP） were compared. The results show that the direct emission of fuel combustion in the process is 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 cause much different impacts on the environmental performance. The accumulative environmental impact of coal burned directly is the highest, and that of producer-gas comes to the next, while that of coke-oven gas is the lowest.

关 键 词：镁产量 寿命周期评 环境影响 中国 

分 类 号：TG146.22[一般工业技术—材料科学与工程]