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Life cycle assessment of ferro niobium

  • Iulia Dolganova
  • Fabian Bosch
  • Vanessa BachEmail author
  • Martin Baitz
  • Matthias Finkbeiner
LCI METHODOLOGY AND DATABASES
  • 37 Downloads

Abstract

Purpose

Ferro niobium (FeNb) is a metallic alloy whose industrial use has been increasing steadily in the last decades. This work aims to systematize the available information on FeNb production, provide its inventory data and generate its first technologically representative publicly available life cycle impact assessment (LCIA).

Methods

The production of 1 kg of FeNb from pyrochlore in the baseline year 2017 was modelled following a cradle-to-gate approach. Primary information on mass, energy and water flows was collected when possible from the Brazilian leading FeNb supplier, CBMM (80% of the world market). The CML method (CML-IA 4.7) was applied for the impact assessment including global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), ozone layer depletion potential (ODP), abiotic depletion potential (fossil and elemental) (ADPfossil and ADPelemental) and photochemical ozone creation potential (POCP).

Results and discussion

The first stage of pyrochlore processing (pyrochlore ore extraction, mechanical processing and flotation) and the last stage (aluminothermic reaction) bear the highest impact in all analyzed CML impact categories. The primary aluminium consumption has the most important contribution in five out of seven impact categories (50% in ADPfossil, 55% in AP, 35% in EP, 57% in GWP and 40% in POCP). In this sense, the industry should promote a higher share of secondary aluminium in the production process. Also, the impact from electricity consumption and processing chemicals showed to be relevant.

Conclusions

This work is the first LCIA on ferro niobium to be published with representative, high-quality data. A dataset was produced in order to enable ferro niobium to be incorporated to future LCIA-modelling.

Keywords

Ferro niobium Niobium Life cycle assessment Mining Pyrochlore 

Notes

Acknowledgements

Part of the work presented here was prepared in the context of the DFG project RessMob (Assessment of abiotic and biotic resources within the mobility sector–development of assessment criteria, methods and concepts) (project number: FI 1622/6-1). We would like to thank the DFG for the financial support. The authors are also thankful for the production data kindly provided by CBMM.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Iulia Dolganova
    • 1
  • Fabian Bosch
    • 2
  • Vanessa Bach
    • 1
    Email author
  • Martin Baitz
    • 2
  • Matthias Finkbeiner
    • 1
  1. 1.Sustainable EngineeringTechnische Universität BerlinBerlinGermany
  2. 2.thinkstepLeinfelden-EchterdingenGermany

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