...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Mapping the Global Flow of Aluminum: From Liquid Aluminum to End-Use Goods
【24h】

Mapping the Global Flow of Aluminum: From Liquid Aluminum to End-Use Goods

机译：绘制铝的全球流量图：从液态铝到最终用途商品

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Demand for aluminum in final products has increased 30-fold since 1950 to 45 million tonnes per year, with forecasts predicting this exceptional growth to continue so that demand will reach 2-3 times today's levels by 2050. Aluminum production uses 3.5% of global electricity and causes 1% of global CO_2 emissions, while meeting a 50% cut in emissions by 2050 against growing demand would require at least a 75% reduction in CO_2 emissions per tonne of aluminum produced-a challenging prospect. In this paper we trace the global flows of aluminum from liquid metal to final products, revealing for the first time a complete map of the aluminum system and providing a basis for future study of the emissions abatement potential of material efficiency. The resulting Sankey diagram also draws attention to two key issues. First, around half of all liquid aluminum (～39 Mt) produced each year never reaches a final product, and a detailed discussion of these high yield losses shows significant opportunities for improvement. Second, aluminum recycling, which avoids the high energy costs and emissions of electrolysis, requires signification "dilution" (～8 Mt) and "cascade" (～6 Mt) flows of higher aluminum grades to make up for the shortfall in scrap supply and to obtain the desired alloy mix, increasing the energy required for recycling.
机译：自1950年以来，最终产品中的铝需求已增长了30倍，达到每年4500万吨，并预测这种超常增长将持续下去，以便到2050年需求将达到当今水平的2-3倍。铝产量占全球电力的3.5％并导致全球CO_2排放量的1％，而要想在2050年之前将碳排放量减少50％，同时又要满足不断增长的需求，就需要将每吨铝的CO_2排放量至少降低75％，这是一个充满挑战的前景。在本文中，我们追踪了铝从液态金属到最终产品的全球流量，首次揭示了铝系统的完整图，并为将来研究材料效率的减排潜力提供了基础。生成的Sankey图还引起人们对两个关键问题的关注。首先，每年生产的所有液态铝（约39 Mt）中约有一半从未达到最终产品的水平，对这些高产量损失的详细讨论显示出很大的改进机会。其次，铝的回收避免了高昂的能源成本和电解的排放，需要更高铝等级的“稀释”（〜8 Mt）和“级联”（〜6 Mt）流量来弥补废料供应和供应的不足。以获得所需的合金混合物，增加了回收所需的能量。

著录项

  • 来源
    《Environmental Science & Technology》 |2013年第7期|3057-3064|共8页
  • 作者

    Jonathan M. Cullen; Julian M. Allwood;

  • 作者单位

    Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, CB21PZ, United Kingdom;

    Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, CB21PZ, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号