Novel fluxing strategy of copper matte smelting and trace metals in E-Waste recycling

Min Chen; Katri Avarmaa; Pekka Taskinen; Lassi Klemettinen; Radoslaw Michallik; Hugh O'Brien; Ari Jokilaakso

doi:10.1016/j.mineng.2022.107969

Novel fluxing strategy of copper matte smelting and trace metals in E-Waste recycling

Min Chen, Katri Avarmaa, Pekka Taskinen, Lassi Klemettinen, Radoslaw Michallik, Hugh O'Brien, Ari Jokilaakso^*

^*Tämän työn vastaava kirjoittaja

Geological Survey of Finland

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

7 Sitaatiot (Scopus)

114 Lataukset (Pure)

Abstrakti

The distribution behavior of trace metals between copper matte and spinel-saturated iron silicate slags was investigated at 1250 °C and pSO₂ of 0.25 atm at low silica concentrations. The experiments were conducted in magnetite (Fe₃O₄) spinel crucibles in controlled CO-CO₂-SO₂-Ar gas mixtures using a high-temperature equilibration-quenching technique. The concentrations of trace elements in matte, spinel, and slag were quantified by electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. The trace metals (Ag, Ni, Co, and Sn) in all phases and their distribution coefficients were calculated as a function of matte grade. Results show that silver and nickel can be effectively recovered into matte, whereas cobalt and tin are predominantly deported into slag and gas phases, respectively. These results augment the fundamental thermodynamic data of trace metal distributions in copper smelting processes at low-silica fluxing practices.

Alkuperäiskieli	Englanti
Artikkeli	107969
Sivumäärä	13
Julkaisu	Minerals Engineering
Vuosikerta	191
Varhainen verkossa julkaisun päivämäärä	12 jouluk. 2022
DOI - pysyväislinkit	https://doi.org/10.1016/j.mineng.2022.107969
Tila	Julkaistu - tammik. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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CHEM_Chen_et_al_Novel_fluxing_strategy_2022_Minerals_EngineeringFinal published version, 4,55 MBLisenssi: CC BY

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@article{922e5f370cdc47ad8fd372e9d135da03,

title = "Novel fluxing strategy of copper matte smelting and trace metals in E-Waste recycling",

abstract = "The distribution behavior of trace metals between copper matte and spinel-saturated iron silicate slags was investigated at 1250 °C and pSO2 of 0.25 atm at low silica concentrations. The experiments were conducted in magnetite (Fe3O4) spinel crucibles in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature equilibration-quenching technique. The concentrations of trace elements in matte, spinel, and slag were quantified by electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. The trace metals (Ag, Ni, Co, and Sn) in all phases and their distribution coefficients were calculated as a function of matte grade. Results show that silver and nickel can be effectively recovered into matte, whereas cobalt and tin are predominantly deported into slag and gas phases, respectively. These results augment the fundamental thermodynamic data of trace metal distributions in copper smelting processes at low-silica fluxing practices.",

keywords = "Circular economy, Flash smelting, Fluxing practice, Minor elements, Sustainability, WEEE",

author = "Min Chen and Katri Avarmaa and Pekka Taskinen and Lassi Klemettinen and Radoslaw Michallik and Hugh O'Brien and Ari Jokilaakso",

note = "Funding Information: This study was partly financially supported by Aalto University, School of Chemical Engineering. Min Chen acknowledges the financial support from the China Scholarship Council [number #201806370217]. RAMI (Raw Materials Infrastructure) by Academy of Finland hosted by Aalto University, VTT and GTK at Otaniemi Campus was used in this investigation. Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2023",

month = jan,

doi = "10.1016/j.mineng.2022.107969",

language = "English",

volume = "191",

journal = "Minerals Engineering",

issn = "0892-6875",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Novel fluxing strategy of copper matte smelting and trace metals in E-Waste recycling

AU - Chen, Min

AU - Avarmaa, Katri

AU - Taskinen, Pekka

AU - Klemettinen, Lassi

AU - Michallik, Radoslaw

AU - O'Brien, Hugh

AU - Jokilaakso, Ari

N1 - Funding Information: This study was partly financially supported by Aalto University, School of Chemical Engineering. Min Chen acknowledges the financial support from the China Scholarship Council [number #201806370217]. RAMI (Raw Materials Infrastructure) by Academy of Finland hosted by Aalto University, VTT and GTK at Otaniemi Campus was used in this investigation. Publisher Copyright: © 2022 The Author(s)

PY - 2023/1

Y1 - 2023/1

N2 - The distribution behavior of trace metals between copper matte and spinel-saturated iron silicate slags was investigated at 1250 °C and pSO2 of 0.25 atm at low silica concentrations. The experiments were conducted in magnetite (Fe3O4) spinel crucibles in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature equilibration-quenching technique. The concentrations of trace elements in matte, spinel, and slag were quantified by electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. The trace metals (Ag, Ni, Co, and Sn) in all phases and their distribution coefficients were calculated as a function of matte grade. Results show that silver and nickel can be effectively recovered into matte, whereas cobalt and tin are predominantly deported into slag and gas phases, respectively. These results augment the fundamental thermodynamic data of trace metal distributions in copper smelting processes at low-silica fluxing practices.

AB - The distribution behavior of trace metals between copper matte and spinel-saturated iron silicate slags was investigated at 1250 °C and pSO2 of 0.25 atm at low silica concentrations. The experiments were conducted in magnetite (Fe3O4) spinel crucibles in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature equilibration-quenching technique. The concentrations of trace elements in matte, spinel, and slag were quantified by electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. The trace metals (Ag, Ni, Co, and Sn) in all phases and their distribution coefficients were calculated as a function of matte grade. Results show that silver and nickel can be effectively recovered into matte, whereas cobalt and tin are predominantly deported into slag and gas phases, respectively. These results augment the fundamental thermodynamic data of trace metal distributions in copper smelting processes at low-silica fluxing practices.

KW - Circular economy

KW - Flash smelting

KW - Fluxing practice

KW - Minor elements

KW - Sustainability

KW - WEEE

UR - http://www.scopus.com/inward/record.url?scp=85143862199&partnerID=8YFLogxK

U2 - 10.1016/j.mineng.2022.107969

DO - 10.1016/j.mineng.2022.107969

M3 - Article

AN - SCOPUS:85143862199

SN - 0892-6875

VL - 191

JO - Minerals Engineering

JF - Minerals Engineering

M1 - 107969

ER -

Novel fluxing strategy of copper matte smelting and trace metals in E-Waste recycling

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