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Distribution of Co, Fe, Ni, and precious metals between blister copper and white metal

  • Keiran Holland
  • , Dmitry Sukhomlinov
  • , Lassi Klemettinen
  • , Petri Latostenmaa
  • , Hugh O’Brien
  • , Ari Jokilaakso
  • , Pekka Taskinen*
  • *Corresponding author for this work
  • Boliden Harjavalta Oy
  • Geological Survey of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

The distribution coefficients of Co, Ni, Ag, Au, Pd, and Fe at low concentrations between liquid copper and molten white metal (low-iron copper matte, ‘Cu2S’) were investigated experimentally as a function of temperature (1250–1350°C) and SO2 partial pressure (0.01–1 atm). The experimental technique involved samples equilibration at controlled temperature and gas atmosphere, followed by quenching and subsequent elemental analysis of equilibrium phases with electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. The distribution coefficient of silver, nickel, gold and palladium between liquid copper and white metal indicated that they favour the blister copper whereas cobalt and iron distribute more to the white metal. The distribution coefficient of nickel, e.g. increased from 2.1 at 0.1–1.0 atm PSO2 and 1250°C to 3.2 at 1350°C. The distribution coefficients were only slightly dependent on temperature. The relatively strong dependence of the distribution coefficient of cobalt on PSO2 was discussed.

Original languageEnglish
Pages (from-to)313-323
Number of pages11
JournalMineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy
Volume130
Issue number4
Early online date23 Jul 2019
DOIs
Publication statusPublished - 2 Oct 2021
MoE publication typeA1 Journal article-refereed

Funding

This work was supported by European Institute Innovation and Technology (EIT) Raw Materials-KIC [grant number SGA2017/1]. Boliden Harjavalta (Finland), Eramet (France) and EIT-Raw Materials KIC (EU Horizon 2020) through NewEco project (grant # EIT/RAW MATERIALS/SGA2017/1) are gratefully acknowledged for the financial support received by Aalto University. The authors are indebted to GTK (Geological Survey of Finland) for the EPMA analyses.

Keywords

  • circular economy
  • converting
  • copper alloy
  • Copper matte
  • e-scrap
  • fire refining
  • thermodynamics
  • trace elements

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