About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging for Materials Science and Processing
|
| Presentation Title |
In-situ Observation of Cu - FeS2 Reaction Interface |
| Author(s) |
Mako Yamada, Masashi Nakamoto, Masanori Suzuki, Takeshi Yoshikawa, Tatsuya Motomura, Hiroyuki Sano |
| On-Site Speaker (Planned) |
Mako Yamada |
| Abstract Scope |
To increase the usage of copper scrap in copper flash smelting, a process is being developed in which a mixture of copper scrap and copper concentrate primarily composed of CuFeS2 with minor amounts of FeS2 is fed into flash smelting furnace as a raw material for matte formation. A significant challenge in this process is the suppression of sulfur loss due to the thermal decomposition of CuFeS2 and FeS2, which releases S2 gas at elevated temperatures. In this study, we investigated the reaction behavior between copper and FeS2 through in-situ observations. The surface and cross-sectional microstructures of the quenched samples were analyzed using SEM-EDX. Consequently, we confirmed the formation of copper sulfide at the Cu–FeS2 interface at a temperature lower than the decomposition of FeS2, which might play a key role in suppressing sulfur loss. Additionally, the growth of wire-like copper structures from FeS2 particles was observed at 800-900 °C. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, High-Temperature Materials, Other |