Exergy cost of mineral resources

Rui N. Rosa, Diogo R.N. Rosa

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

5 Citationer (Scopus)

Abstrakt

Mineral deposits are considered as natural capital whose value can be assessed in exergy terms. Historical industry experience provides evidence that exploitation of mineral deposits and the beneficiation of ores are essentially energy intensive. The persisting decline of the grade of the developed deposits demands increasing exergy replacement and processing costs. The results demonstrate how far processed ores and concentrates are from ideal behaviour, and technologies from reversibility conditions. The exploitation of mineral resources of declining quality for mineral commodities imply a long time trend of increasing mass and exergy inputs spent per unit product output, in line with a law of 'diminishing returns' on invested exergy.

OriginalsprogEngelsk
Sider (fra-til)532-555
Antal sider24
TidsskriftInternational Journal of Exergy
Vol/bind5
Udgave nummer5-6
DOI
StatusUdgivet - 2008
Udgivet eksterntJa

Programområde

  • Programområde 4: Mineralske råstoffer

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