Experimental Measurements of Slag/Matte/Metal/Tridymite Phase Equilibria in the Cu-Fe-O-S-Si System at 1200ºC
| Autor: | Svetlana Sineva, Peter C. Hayes, Maksym Shevchenko, Evgueni Jak |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Quenching
Materials science Mechanical Engineering Metallurgy chemistry.chemical_element Slag General Chemistry Electron microprobe Geotechnical Engineering and Engineering Geology Copper Microanalysis Tridymite chemistry Phase (matter) visual_art visual_art.visual_art_medium Economic Geology White metal |
| Zdroj: | Mineral Processing and Extractive Metallurgy Review. 43:989-999 |
| ISSN: | 1547-7401 0882-7508 |
| DOI: | 10.1080/08827508.2021.1998042 |
| Popis: | An experimental study has been carried out to determine the compositions of the slag/matte/metal/tridymite phases in equilibrium in the Cu-Fe-O-S-Si system at 1200℃. The measurements covered the full range of matte compositions from copper-free mattes to white metal, i.e. from 0 to 80 wt% of copper in matte. The research methodology involved high-temperature equilibration, quenching of the samples and accurate measurement of the phase compositions by electron probe X-ray microanalysis. The oxygen concentrations in mattes were directly measured using the EPMA. A comprehensive set of experimental equilibrium data has been obtained for coexisting matte, slag, Cu-Fe metal alloy and Fe-Cu metal alloy phases. It has been shown that solid iron-copper alloys were present at matte grades below 56 wt% Cu, while liquid copper-iron alloys were formed for matte grades higher than 56 wt% Cu. The experimental measurements have been compared with data reported in the literature and the trends calculated using the thermodynamic model descriptions of the system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|