Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting

Min Chen; Katri Avarmaa; Lassi Klemettinen; Hugh O’Brien; Dmitry Sukhomlinov; Junjie Shi; Pekka Taskinen; Ari Jokilaakso

doi:10.1007/s11663-020-01861-5

Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting

Min Chen
, Katri Avarmaa
, Lassi Klemettinen
, Hugh O’Brien
, Dmitry Sukhomlinov
, Junjie Shi
, Pekka Taskinen^*
, Ari Jokilaakso

^*Corresponding author for this work

Geological Survey of Finland
Norwegian University of Science and Technology

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

41 Citations (Scopus)

130 Downloads (Pure)

Abstract

With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeO_x-SiO₂, FeO_x-SiO₂-Al₂O₃, and FeO_x-SiO₂-Al₂O₃-CaO slag) were investigated at 1300 °C in controlled flowing CO-CO₂-SO₂-Ar gas atmosphere by a high-temperature isothermal equilibration technique. The phase compositions were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High Resolution Inductively Coupled Plasma-Mass Spectrometry. It was shown that the distribution coefficients of gold, platinum, and palladium between matte and slag (L^m/s(Me) = [Me]_{in matte}/(Me)_{in slag}) were very high and increased with increasing matte grade. The distributions to the matte phase were increased by adding basic oxides alumina and lime into the acidic silicate slags. The experimentally measured distribution coefficients L^m/s(Me) followed the order of platinum > palladium > gold > silver. The present experimental results can be used for upgrading thermodynamic databases for the complex recycling processes through nonferrous smelting.

Original language	English
Pages (from-to)	1495-1508
Number of pages	14
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	51
Issue number	4
Early online date	19 May 2020
DOIs	https://doi.org/10.1007/s11663-020-01861-5
Publication status	Published - 1 Aug 2020
MoE publication type	A1 Journal article-refereed

Funding

Open access funding provided by Aalto University. This work was partly financially supported by the Aalto University School of Chemical Engineering and the Business Finland financed SYMMET project [Grant Number 3891/31/2018], and utilized the Academy of Finland’s RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo and VTT Espoo. The contribution of Mr. Lassi Pakkanen from Geological Survey of Finland (GTK) is specially appreciated for conducting the EPMA analyses. Min Chen acknowledges the China Scholarship Council [Grant Number 201806370217] for supporting his study at Aalto University.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities
SDG 12 Responsible Consumption and Production

Access to Document

10.1007/s11663-020-01861-5Licence: CC BY

Chen2020_Article_RecoveryOfPreciousMetalsAuAgPtFinal published version, 1.95 MBLicence: CC BY

Cite this

@article{65ec162ccb3c4108837b5d35cbf55438,

title = "Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting",

abstract = "With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeOx-SiO2, FeOx-SiO2-Al2O3, and FeOx-SiO2-Al2O3-CaO slag) were investigated at 1300 °C in controlled flowing CO-CO2-SO2-Ar gas atmosphere by a high-temperature isothermal equilibration technique. The phase compositions were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High Resolution Inductively Coupled Plasma-Mass Spectrometry. It was shown that the distribution coefficients of gold, platinum, and palladium between matte and slag (Lm/s(Me) = [Me]in matte/(Me)in slag) were very high and increased with increasing matte grade. The distributions to the matte phase were increased by adding basic oxides alumina and lime into the acidic silicate slags. The experimentally measured distribution coefficients Lm/s(Me) followed the order of platinum > palladium > gold > silver. The present experimental results can be used for upgrading thermodynamic databases for the complex recycling processes through nonferrous smelting.",

author = "Min Chen and Katri Avarmaa and Lassi Klemettinen and Hugh O{\textquoteright}Brien and Dmitry Sukhomlinov and Junjie Shi and Pekka Taskinen and Ari Jokilaakso",

year = "2020",

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doi = "10.1007/s11663-020-01861-5",

language = "English",

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Chen, M, Avarmaa, K, Klemettinen, L, O’Brien, H, Sukhomlinov, D, Shi, J, Taskinen, P & Jokilaakso, A 2020, 'Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting', Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, vol. 51, no. 4, pp. 1495-1508. https://doi.org/10.1007/s11663-020-01861-5

Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting. / Chen, Min; Avarmaa, Katri; Klemettinen, Lassi et al.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 51, No. 4, 01.08.2020, p. 1495-1508.

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

TY - JOUR

T1 - Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting

AU - Chen, Min

AU - Avarmaa, Katri

AU - Klemettinen, Lassi

AU - O’Brien, Hugh

AU - Sukhomlinov, Dmitry

AU - Shi, Junjie

AU - Taskinen, Pekka

AU - Jokilaakso, Ari

PY - 2020/8/1

Y1 - 2020/8/1

N2 - With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeOx-SiO2, FeOx-SiO2-Al2O3, and FeOx-SiO2-Al2O3-CaO slag) were investigated at 1300 °C in controlled flowing CO-CO2-SO2-Ar gas atmosphere by a high-temperature isothermal equilibration technique. The phase compositions were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High Resolution Inductively Coupled Plasma-Mass Spectrometry. It was shown that the distribution coefficients of gold, platinum, and palladium between matte and slag (Lm/s(Me) = [Me]in matte/(Me)in slag) were very high and increased with increasing matte grade. The distributions to the matte phase were increased by adding basic oxides alumina and lime into the acidic silicate slags. The experimentally measured distribution coefficients Lm/s(Me) followed the order of platinum > palladium > gold > silver. The present experimental results can be used for upgrading thermodynamic databases for the complex recycling processes through nonferrous smelting.

AB - With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeOx-SiO2, FeOx-SiO2-Al2O3, and FeOx-SiO2-Al2O3-CaO slag) were investigated at 1300 °C in controlled flowing CO-CO2-SO2-Ar gas atmosphere by a high-temperature isothermal equilibration technique. The phase compositions were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High Resolution Inductively Coupled Plasma-Mass Spectrometry. It was shown that the distribution coefficients of gold, platinum, and palladium between matte and slag (Lm/s(Me) = [Me]in matte/(Me)in slag) were very high and increased with increasing matte grade. The distributions to the matte phase were increased by adding basic oxides alumina and lime into the acidic silicate slags. The experimentally measured distribution coefficients Lm/s(Me) followed the order of platinum > palladium > gold > silver. The present experimental results can be used for upgrading thermodynamic databases for the complex recycling processes through nonferrous smelting.

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U2 - 10.1007/s11663-020-01861-5

DO - 10.1007/s11663-020-01861-5

M3 - Article

AN - SCOPUS:85085298826

SN - 1073-5615

VL - 51

SP - 1495

EP - 1508

JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

IS - 4

ER -

Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting

Abstract

Funding

UN SDGs

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SYMMET: Symbiosis of metals production and nature

Raw Materials Research Infrastructure

Cite this

Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting

Abstract

Funding

UN SDGs

Access to Document

Other files and links

Fingerprint

Projects

SYMMET: Symbiosis of metals production and nature

Equipment

Raw Materials Research Infrastructure

Cite this