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The effects of the amphoteric and basic oxides alumina and lime on the phase equilibria of copper matte and silica-saturated slags were investigated at 1300 °C and PSO2 = 0.1 atm in a controlled CO-CO2-SO2-Ar gas atmosphere using a high-temperature isothermal equilibration technique followed by rapid quenching. The equilibrium phase compositions were obtained by Electron Probe X-ray Microanalysis. The relationship between the copper concentration in matte and the oxygen partial pressure, iron, and sulfur in matte was quantified. The pure iron-silicate slag exhibited the highest copper loss in slag, although the addition of alumina and lime decreased its value by approximately a quarter and a half, respectively, at a matte grade of 65 wt pct Cu. In contrast, copper and sulfur were highly distributed in the matte phase, and their deportment to the matte was favored by addition of alumina and lime.
|Number of pages||12|
|Journal||Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science|
|Early online date||2 Jun 2020|
|Publication status||Published - 1 Aug 2020|
|MoE publication type||A1 Journal article-refereed|
- S-SI SYSTEM
- HIGH PARTIAL PRESSURES
- CONTROLLED GAS ATMOSPHERE
- GAS/SLAG/MATTE/TRIDYMITE EQUILIBRIA
- 1573 K
- SMELTING SLAGS
- PRECIOUS METALS
- MINOR ELEMENTS
- FAYALITE SLAG
FingerprintDive into the research topics of 'Experimental Study on the Phase Equilibrium of Copper Matte and Silica-Saturated FeO x-SiO2-Based Slags in Pyrometallurgical WEEE Processing'. Together they form a unique fingerprint.
- 1 Finished
SYMMET: Symbiosis of metals production and nature
Jokilaakso, A., Klemettinen, A., Aromaa, R., Chen, M., Ruismäki, R., Kleemola, L., Klemettinen, L., Rämä, M. & Revitzer, H.
01/11/2018 → 31/10/2020
Project: Business Finland: Other research funding
Raw Materials Research Infrastructure
Maarit Karppinen (Manager)School of Chemical Engineering