本次英国代写是自然资源科学的一个Homework

从以下选择 1 种关键矿物或元素:

钴、镍、铂族金属

查找最接近当前年份的全球和/或美国产量(吨或盎司或公斤) 5 分

求其同年的当前$值【注:值与价格不同】5分

找到初级产品(即来自开采的矿石)(吨或盎司或公斤)5 分

找到二次生产(即除初级生产之外的所有生产;例如回收、副产品、废物回收等)(吨或盎司或公斤)5 分

未来几十年的预计需求或预计趋势是什么,即未来展望(例如,您发现的信息可能是到 2030 年或 2035 年或 2040 年或 2050 年等。未来的年份无关紧要)–5 分

列出导致您选择的矿物达到临界值的因素(最多 5 个) 15 分

列出影响确定和指定“矿物临界度”的所有因素(尽可能多)(即能源部等机构用于评估给定矿物临界度的所有因素)

将上述因素列表组织或分组为不同的类别。 [提示:考虑至少 5 个主要类别,例如资源相关,技术相关;注意:有>5个类别和>20个因素]

NRC Natl Academies 2007 报告使用供应风险和供应限制影响的二维矩阵来评估矿物的临界性。供应风险和供应限制的影响是集中参数。讲座中对此进行了讨论。建议一个更好的方法或指标或指标来评估关键性。您还可以突出显示此二维评估中缺少的内容。我们不是在寻找最终的完美答案。也不期待详细的论述。方法和逻辑会很好。请询问您是否对此任务不清楚。 20分

  1. Pick 1 critical mineral or element from the following:

Co, Ni, PGM

  1. Find global and/or US production for the nearest to current year (Tons or ounces or Kg) 5 points
  2. Find its current $ value for the same year [Note: value is not the same as price] 5 points
  3. Find primary production (i.e. from mined ores) (Tons or ounces or Kg) 5 points
  4. Find secondary production (i.e. all production other than primary production; e.g. recycling, byproduct, recovery from waste, etc.) (Tons or ounces or Kg) 5 points
  5. What is the projected need or projected trend for the next several decades, i.e., Future outlook (e.g. information you find may be through 2030 or 2035 or 2040 or 2050 etc. it does not matter what the year is into the future) –5 points
  6. List factors (up to 5) which caused your selected mineral to be critical 15 points
  7. 40 points
  8. List all the factors (as many as you can think of) which influence determining and designating “Criticality of Minerals” in general (i.e. all the factors that an agency like Department of Energy would use to assess criticality of a given mineral)
  9. Organize or Group the list of factors above into distinct categories. [Hint: consider at least 5 major categories, e.g. resource related, technology related; Note: there are >5 categories and >20 factors]
  10. The NRC Natl Academies 2007 report uses 2-D Matrix of Supply Risk and Impact of Supply Restriction to evaluate Criticality of Minerals. Supply Risk and Impact of Supply Restriction are lumped parameters. This was discussed in the lecture. Suggest a better approach or index or metric to assess criticality. You could also highlight what is missing in this 2-D evaluation. We are not looking for a final perfect answer. Nor expecting a detailed discourse. Approach and logic would be good. Please ask if you are not clear about this task. 20 points
分类: 代写案例