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LONG-TERM URANIUM SUPPLY ESTIMATES

机译:长期铀供应估算

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摘要

We address the long-term uranium supply from first principles, summarizing estimates of the abundance of uranium in the crust of the earth as a function of concentration and accessibility. Defining the supply curve as a functional relationship between the cumulative quantity of uranium extracted and the cost of extracting the next unit of uranium, we note that a supply curve requires a crustal abundance model plus a correlation between ore grade and extraction cost. Surveying a number of supply curves that appear in the literature, we observe that while estimates vary widely (we observe an order of magnitude difference in forecasts of the quantity of uranium available at $100/kg U or less), they generally reflect expectations that uranium availability will be significantly greater than the Red Book numbers imply. Furthermore, by comparison with historical data for more than 40 other minerals, we show that the assumption of time invariance when formulating a supply curve is not borne out by experience. In fact, the price of most other minerals has decreased with time as well as with cumulative quantity extracted. Neither the Red Book nor the other supply curves we survey explicitly accounts for the unit-based technological learning that fosters this behavior.
机译:我们从第一条原则着眼于铀的长期供应,总结了地壳中铀的含量随浓度和可及性而变的估计。将供应曲线定义为铀的累计开采量与提取下一单位铀的成本之间的函数关系,我们注意到,供应曲线需要地壳丰度模型以及矿石品位与开采成本之间的相关性。通过调查文献中出现的许多供应曲线,我们观察到,尽管估计值相差很大(我们观察到铀的可用量在100美元/千克U或以下的预测值有数量级的差异),但它们通常反映出人们对铀的期望可用性将大大高于《红皮书》中的数字。此外,通过与40多种其他矿物的历史数据进行比较,我们表明,制定供应曲线时的时间不变性假设不能由经验证明。实际上,大多数其他矿物的价格随着时间的推移以及提取的累计数量的下降而下降。 《红皮书》和我们调查的其他供应曲线都没有明确说明促进这种行为的基于单元的技术学习。

著录项

  • 来源
    《Nuclear Technology》 |2008年第3期|p.379-387|共9页
  • 作者单位

    The University of Texas at Austin 1 University Station C2200, Austin, Texas 78712;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 原子能技术;
  • 关键词

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