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从铜炉渣中回收铜的环境影响评价研究

Study on Environmental Impact of Recycling Copper Process from Copper-slag

【作者】 李英顺

【导师】 路迈西;

【作者基本信息】 中国矿业大学(北京) , 环境工程, 2009, 博士

【摘要】 本文运用简化生命周期评价的方法,对铜炉渣回收铜的过程进行了环境影响评价。首先,运用统计分析的方法收集每一个单元的输入和输出数据。然后,将生态指数法Eco-indicator99改进后用于我国铜工业的环境影响评价,建立影响评价模型,将清单数据通过Simapro7.1软件中的生态指数法(Eco-indicator99)进行计算,量化为环境影响负荷值。最后,进行了生命周期环境影响的评价和结果的解释。论文对铜炉渣和原铜矿回收铜过程的环境协调性进行了对比研究,得到了生产过程中各工序的环境负荷数据。铜炉渣回收铜过程包括破碎、磨矿、浮选、脱水四个阶段,四个阶段的环境负荷单一值分别为0.0168、0.0200、0.0615、0.0279,铜炉渣回收铜过程总的环境负荷单一值为0.1262;而原铜矿回收铜过程增加了采矿环节,包括五个阶段,五个阶段的环境负荷单一值分别为0.1120、0.0138、0.0152、0.0617、0.0287,原铜矿回收铜过程总的环境负荷单一值为0.2314。由于铜炉渣回收铜的生产过程减少了采矿环节,铜炉渣回收铜过程的人类健康损害、生态系统损害和资源损害环境负荷单个值分别是原铜矿的82%、54%、19%,它的环境负荷约为原铜矿的0.55倍。由以上研究结果可知,从铜炉渣中回收铜资源将显著地提高资源利用率,降低环境负荷,有利于循环经济的发展。

【Abstract】 The predigestion life cycle assessment method (LCA) has been applied to investigate the environmental impact of recycle copper process from copper-slag. First of all, all the data for each stage of input and output are collected by statistic analyses method. And then improving Eco-indicator99 is using to assess environmental impact of copper industry in China. Impact assessment model is established. Life cycle inventory (LCI) data are calculated in accordance with Eco-indicator99 of Simapro7.1 software and environmental impact single data is obtained. Finally, the result about environmental impact assessment is explained.Environmental impact of copper-slag and copper-ore recycle copper process is studied. Related environmental load data of each process stage have been obtained. Copper-slag recycle copper process includes crushing, milling, flotation, dehydration. Environmental impact single data of each process stage is 0.0168、0.0200、0.0615、0.0279, total environmental impact single data of copper-slag is 0.1262. Copper-ore recycle process includes mining, crushing, milling, flotation, dehydration. Environmental impact single data of each process stage is 0.1120、0.0138、0.0152、0.0617、0.0287, total environmental impact single data of copper-slag is 0.2314. Copper-slag recycle process has not mining process. Impact single score (Eco-indicator) of human health, ecosystem quality and resources is of copper-slag process is 82%、54%、19% of those of copper-ore process. The total impact single score of copper-slag process is 0.55 times than copper-ore. Recycle copper from slag will remarkably improve the utilization of resources, reduce environmental load and development of circulation economics.

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