Distribution of Ni, Co, Precious, and Platinum Group Metals in Copper Making Process

Dmitry Sukhomlinov, Lassi Klemettinen, Katri Avarmaa, Hugh O’Brien, Pekka Taskinen*, Ari Jokilaakso

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
129 Downloads (Pure)

Abstract

The distribution coefficients of Ni, Co, Ag, Au, Pt, and Pd between molten copper and silica-saturated iron silicate slags (LMeCu/s) were measured experimentally. The distribution behaviors were studied under typical conditions of copper converting and fire refining, i.e., from 1250 °C to 1350 °C, and from 10 −8 to 10 −4 atm oxygen partial pressure. The coefficients were determined as the ratios of the trace element weight concentrations measured in situ, directly from the equilibrated metal and slag phases. For the quantitative elemental analysis of the phases, state-of-the-art analytic techniques, including electron probe microanalysis and laser ablation-inductively coupled plasma-mass spectrometry, were employed. The distribution coefficients LMeCu/s determined can be arranged in the following order: Pt > Au > Pd >> Ag > (Cu) > Ni > Co > (Fe).

Original languageEnglish
Pages (from-to)1752-1765
Number of pages14
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume50
Issue number4
DOIs
Publication statusPublished - 15 Aug 2019
MoE publication typeA1 Journal article-refereed

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