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With the development of society and the progress of human civilization, the material plays an increasingly important role. In recent years, magnesium as a new material in an amount increased dramatically. Magnesium alloy materials as structural components in transportation bring a significant weight saving effect, the automotive industry has become the main driving force of the growth of the application of magnesium alloy. However, the production of primary magnesium traditional Pidgeon has always been a \In recent years, with the improvement of production technology as well as the introduction of regenerative combustion technology, resources, and energy consumption of primary magnesium production process have significantly decreased, thus bring the emissions of pollutants and other environmental issues is uncertain; In addition, the environmental impact of the production, processing and application of magnesium alloy uncommon for quantitative analysis. Therefore, the assessment of the full life cycle environmental impact of the original magnesium production and magnesium alloy has become the important task of scientific research. The introduction of regenerative combustion technology makes primary magnesium production process, material consumption, energy consumption is significantly reduced. Compared with 2005, the 2009 primary magnesium production material magnesium reduced ratio from 9.5 to 6.5 or less, a decrease of 35% energy input. This paper first analyzes the regenerative combustion technology, energy-saving principle, and combination of materials based on magnesium ratio and coal consumption the environmental load size of the 2009 primary magnesium production process. The results show that: compared to 2005, the primary magnesium production process of non-renewable resources, the decline in the percentage of the greenhouse effect, acidification effect, photochemical smog and human health damage were approximately 28%, 26%, 31%, 26% and 18 %. Chemical properties of magnesium and its alloys lively smelting process in flux or shielding gas both cases, however, have a greater environmental impact. In this paper, two typical magnesium alloy AM60 and of AZ31 flux Protection Act and Gas Law on the Protection of the production process of the two processes carried out an environmental impact assessment, and compare their differences and identify the main environmental pressure where, to identify environmental relatively little impact process method. Further, by calculating the original magnesium cumulative environmental load size of the production of primary aluminum and alloys of the production process of the alloy ingot found: primary magnesium production environment load almost determines the environmental load of the production process of a magnesium alloy. The primary magnesium alloy production process, high energy consumption, high pollution to some extent, restricted the production and application of magnesium alloy. The production of magnesium alloy automotive parts production, assembly, use, recycling example, magnesium alloy from the \The results found that: the original magnesium and other raw materials production stage and parts using two stages of the environmental load almost decided magnesium material full life cycle environmental impact of size, accounted for a percentage of 25.2% and 64.2% respectively of the entire process. Production AM60 magnesium alloy flux Protection Act, for example, combined with the actual situation of production, use and recycling of magnesium alloy parts in China by building a magnesium alloy scrap collection and transport model to calculate the environmental load of alloy scrap recycling process, and compare the native magnesium alloy and a regenerative magnesium alloy environment impact. Finally, the functional units of auto parts production, assembly, use, waste recycling and regeneration process, for example, assume that 30% recycled magnesium alloy instead of the native magnesium alloy, and calculate the environmental load of the whole life cycle of the magnesium alloy, the final analysis of the recycled magnesium alloy of alternative native magnesium alloys for the entire life-cycle process.
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