About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
External Field-Intensified Materials Processing
|
| Presentation Title |
Process and Kinetics of Preparing Antimony Trioxide by Microwave Oxidation of Volatile Antimony-Sulfur-Oxygen Mixed Ore |
| Author(s) |
Zhengju Luo, Chenhui Liu , Yongli Wang, Pan Zhou, Yalun Li |
| On-Site Speaker (Planned) |
Chenhui Liu |
| Abstract Scope |
In this study, microwave calcination technology was adopted to prepare antimony trioxide (Sb2O3) using low-grade antimony-sulfur-oxygen mixed ore as raw material. Dielectric and thermodynamic analyses were conducted on the oxidation volatilization of the antimony-sulfur-oxygen mixed ore, revealing the reaction trend and heating characteristics of microwave oxidation volatilization. The effects of calcination temperature, calcination time and oxygen flow rate on the oxidation calcination effect were investigated. Mechanism studies have shown that microwave heating can rapidly increase the internal temperature of minerals and generate thermal stress, forming gas diffusion channels and promoting the oxidation reaction between Sb2S3 and O2 as well as the escape of SO2. The product volatilization rate is 34.99%, and the S impurity content is only 0.45%. Compared with the traditional process, microwave oxidation volatilization has the characteristics of fast heating speed and high reaction efficiency, while reducing SO2 emissions and energy consumption. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Process Technology, Pyrometallurgy |