About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
External Field-Intensified Materials Processing
|
| Presentation Title |
Interaction Mechanisms and Kinetic Characteristics of Microwave Calcination for Preparing Molybdenum Trioxide from Complex Molybdenum Concentrates |
| Author(s) |
Yun Xi Tang, Chenhui Liu, Fengjuan Zhang, Pan Zhou, Yumei Li |
| On-Site Speaker (Planned) |
Chenhui Liu |
| Abstract Scope |
In this paper, molybdenum trioxide (MoO₃) was prepared from complex molybdenum concentrate using microwave roasting technology, and the interaction mechanism of complex molybdenum concentrate and its main components in the microwave field was revealed through the analysis of microwave oxidative roasting temperature trend and high temperature dielectric property test. The effects of roasting temperature, holding time and power-to-mass ratio on the crystallization rate of MoO₃ and the molybdenum content in molybdenum roasted sand were systematically investigated. Kinetic analysis showed that the oxidation reaction of complex molybdenum concentrate under microwave field could be divided into two stages, which were regulated by external diffusion and interfacial chemical reaction, respectively, with apparent activation energies of 0.80 kJ/mol and 0.65 kJ/mol, which were significantly reduced compared with that of the traditional oxidation roasting process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Pyrometallurgy, Powder Materials |