中国镁产业生态系统物质流与价值流的生命周期分析

Life Cycle Analysis on Material and Value Flows of Magnesium Industry Ecosystem in China

中文关键词:  产业生态系统  镁资源  物质流  价值流  中国

英文关键词:industrial ecosystem  magnesium resources  material flow  value flow  China

中文摘要:

      基于物质流分析基本框架，构建了镁产业生态系统的物质流分析模型，定量分析了2015年我国宏观层次镁金属材料在其生命周期各个阶段的物质流与价值流，并核算了以皮江法工艺炼镁产生的生态包袱，同时结合e!Sankeypro 4.5.3绘图软件进行可视化表达与分析。结果表明：①原镁生产过程中资源消耗量较大，皮江法工艺每生产1t原镁的非生物资源输入量和资源直接输入量分别达到59.3t和16.4t，而生态包袱约为资源直接输入量的3.6倍，物质输入端优化的关键在于提高白云石与燃料的利用效率。② 2006-2015年镁产业生态包袱整体呈现上升趋势，清洁生产与循环经济是新时代镁产业生态化发展的对策。③皮江法炼镁的资源物质投入类别中硅铁与煤的价格居高，影响了价值产出率；废镁潜在利用价值较大。④受国内与国际市场需求的影响，迫切需要调整镁产品生产结构以应对未来发展挑战。最后，从资源利用效率、节能减排、回收利用体系、优化产品结构等方面提出了环境管理措施，以期为我国金属镁等矿产资源的循环利用以及绿色发展提供决策依据。

英文摘要:

      Based on the material flow analysis framework, the material flow analysis method and model of magnesium industry ecosystem were constructed to quantitatively analyze the material flow and value flow of China's macro level magnesium metal material in each stage of its life cycle in 2015. The ecological burden of magnesium production by pidgeon process was calculated and combined with e! Sankey pro 4.5.3 drawing software for visual expression and analysis. The results showed that:① the resource consumption was large in the production of raw magnesium. The input amount of non-biological resources and the direct input amount of resources for each 1t of raw magnesium produced by pidgeon method were 59.3t and 16.4t respectively, and the ecological burden was about 3.6 times of the direct input amount of resources. The optimization of source material input was to improve the utilization efficiency of dolomite and fuel. ② the overall ecological burden of magnesium industry showed an upward trend from 2006 to 2015. Clean production and circular economy are the countermeasures for the ecological development of magnesium industry in the new era. ③ the price of ferrosilicon and coal in the resource material input category of pidgeon magnesium smelting was high, affecting the value output rate. The waste pidgeon have a relatively large potential value. ④ Affected by the domestic and international market demand structure, it is necessary to adjust the production structure of magnesium industry to meet the development challenges of magnesium industry. Finally, the environmental management measures were put forward from the aspects of resource utilization efficiency, energy saving and emission reduction, recycling system and optimization of product structure, so as to provide decision-making basis for the recycling and green development of mineral resources such as metal magnesium and magnesium in China.