期刊
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
卷 77, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.calphad.2022.102418
关键词
Copper smelting; Magnetite; W?stite; Phase diagram; Resource efficiency
类别
资金
- School of Chemical Engi-neering, Aalto University [3891/31/2018]
- Business Finland [201806370217]
- VTT in Espoo
- China Scholarship Council
The equilibrium phase relations between metallic copper alloys and magnetite/wustite-saturated iron silicate slags were investigated. The experimental results were compared with data from the literature and thermodynamic assessment to improve copper matte and black copper converting processes.
The equilibrium phase relations between metallic copper alloys and magnetite/wustite-saturated iron silicate slags were investigated at 1200-1300 degrees C and PO2 of 10-10 to 10- 6.5 atm. The experiments involved hightemperature equilibration of samples in a controlled CO-CO2 atmosphere, followed by rapid drop quenching and direct measurement of the phase composition using the electron probe microanalysis technique. The equilibrium compositions for the metal and slag phase at different temperatures were displayed as a function of PO2. The present experimental results were compared with data from the literature as well as the thermodynamic assessment using MTDATA thermodynamic software. The present results contribute to the improvement of copper matte and black copper converting and slag cleaning processes.
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