Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm

Min Chen; Katri Avarmaa; Pekka Taskinen; Radoslaw Michallik; Ari Jokilaakso

doi:10.1080/08827508.2022.2047966

Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm

Min Chen, Katri Avarmaa, Pekka Taskinen, Radoslaw Michallik, Ari Jokilaakso^*

^*Corresponding author for this work

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

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Abstract

The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C and pSO₂ of 0.25 atm. The experiments were conducted in synthesized spinel crucibles (Fe₃O₄) in controlled CO-CO₂-SO₂-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. The equilibrium-phase compositions were characterized using an electron probe X-ray microanalyzer. The compositions of matte and slag were displayed as a function of matte grade or oxygen partial pressure. The present results obtained at spinel saturation in the matte-slag equilibrium system were compared with observations in the literature. This study improves the experimental thermodynamic data on the matte-slag-spinel-gas equilibria systems.

Original language	English
Pages (from-to)	313-324
Number of pages	12
Journal	Mineral Processing and Extractive Metallurgy Review
Volume	44
Issue number	4
Early online date	10 Mar 2022
DOIs	https://doi.org/10.1080/08827508.2022.2047966
Publication status	Published - 2023
MoE publication type	A1 Journal article-refereed

Keywords

copper smelting
Phase equilibria
slag chemistry
spinel
thermodynamics

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10.1080/08827508.2022.2047966Licence: CC BY-NC-ND

CHEM_Chen_et_al_Investigation_on_the_Matte_2023_Mineral_Processing_and_Extractive_Metallurgy_ReviewFinal published version, 2.6 MBLicence: CC BY-NC-ND

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@article{7d6b73f59a09449c9579a7694be70687,

title = "Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm",

abstract = "The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C and pSO2 of 0.25 atm. The experiments were conducted in synthesized spinel crucibles (Fe3O4) in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. The equilibrium-phase compositions were characterized using an electron probe X-ray microanalyzer. The compositions of matte and slag were displayed as a function of matte grade or oxygen partial pressure. The present results obtained at spinel saturation in the matte-slag equilibrium system were compared with observations in the literature. This study improves the experimental thermodynamic data on the matte-slag-spinel-gas equilibria systems.",

keywords = "copper smelting, Phase equilibria, slag chemistry, spinel, thermodynamics",

author = "Min Chen and Katri Avarmaa and Pekka Taskinen and Radoslaw Michallik and Ari Jokilaakso",

note = "Funding Information: This study was partly supported by Aalto University, School of Chemical Engineering. Special thanks are given to the Finland{\textquoteright}s RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo and VTT Espoo. Min Chen acknowledges the financial support from the China Scholarship Council [number 201806370217] for a PhD grant. Publisher Copyright: {\textcopyright} 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.",

year = "2023",

doi = "10.1080/08827508.2022.2047966",

language = "English",

volume = "44",

pages = "313--324",

journal = "Mineral Processing and Extractive Metallurgy Review",

issn = "0882-7508",

publisher = "Taylor & Francis",

number = "4",

}

TY - JOUR

T1 - Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm

AU - Chen, Min

AU - Avarmaa, Katri

AU - Taskinen, Pekka

AU - Michallik, Radoslaw

AU - Jokilaakso, Ari

N1 - Funding Information: This study was partly supported by Aalto University, School of Chemical Engineering. Special thanks are given to the Finland’s RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo and VTT Espoo. Min Chen acknowledges the financial support from the China Scholarship Council [number 201806370217] for a PhD grant. Publisher Copyright: © 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.

PY - 2023

Y1 - 2023

N2 - The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C and pSO2 of 0.25 atm. The experiments were conducted in synthesized spinel crucibles (Fe3O4) in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. The equilibrium-phase compositions were characterized using an electron probe X-ray microanalyzer. The compositions of matte and slag were displayed as a function of matte grade or oxygen partial pressure. The present results obtained at spinel saturation in the matte-slag equilibrium system were compared with observations in the literature. This study improves the experimental thermodynamic data on the matte-slag-spinel-gas equilibria systems.

AB - The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C and pSO2 of 0.25 atm. The experiments were conducted in synthesized spinel crucibles (Fe3O4) in controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. The equilibrium-phase compositions were characterized using an electron probe X-ray microanalyzer. The compositions of matte and slag were displayed as a function of matte grade or oxygen partial pressure. The present results obtained at spinel saturation in the matte-slag equilibrium system were compared with observations in the literature. This study improves the experimental thermodynamic data on the matte-slag-spinel-gas equilibria systems.

KW - copper smelting

KW - Phase equilibria

KW - slag chemistry

KW - spinel

KW - thermodynamics

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DO - 10.1080/08827508.2022.2047966

M3 - Article

AN - SCOPUS:85126377452

SN - 0882-7508

VL - 44

SP - 313

EP - 324

JO - Mineral Processing and Extractive Metallurgy Review

JF - Mineral Processing and Extractive Metallurgy Review

IS - 4

ER -

Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm

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Investigation on the Matte/Slag/Spinel/Gas Equilibria in the Cu-Fe-O-S-SiO2-(CaO, Al2O3) system at 1250 °C and pSO2 of 0.25 atm

Abstract

Keywords

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