T. Norgate, S. Jahanshahi
The energy and greenhouse gas footprints of technologies used for processing nickel laterite ores have been assessed using life cycle assessment methodology based mainly on publicly reported inventory data. The study aimed to identify opportunities for improving energy efficiency and reducing greenhouse gas emissions across various processing methods. Significant opportunities identified include utilizing biochar as a fuel and reductant, implementing slag waste heat recovery in ferronickel smelting, and adopting emerging bath smelting technology instead of traditional rotary kiln/electric furnace processes. The research also highlights that considerable greenhouse gas emissions arise from acid neutralisation in hydrometallurgical processes and suggests exploring alternative neutralising agents or even non-acid leaching systems as potential reduction strategies. Another avenue for enhancing sustainability in nickel production is improving the energy efficiency of the electrowinning stage used to recover nickel metal from leach liquor. This study provides insights on how processing technologies might adapt to future scenarios, particularly in response to declining ore grades and potential carbon pricing mechanisms.
@article{348c4584-3535-4312-b6dd-8f9e1966e42a,
title={Assessing the energy and greenhouse gas footprints of nickel laterite processing},
author={T. Norgate and S. Jahanshahi},
year={2010},
language={en}
}TY - JOUR TI - Assessing the energy and greenhouse gas footprints of nickel laterite processing AU - T. Norgate AU - S. Jahanshahi PY - 2010 LA - en ER -
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