| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
Kinetic Study of Reduction of ZnFe2O4 |
| Author(s) |
Xuefeng Bai, Chengbo Wu, Yang Wang, Zhihui Guo |
| On-Site Speaker (Planned) |
Xuefeng Bai |
| Abstract Scope |
In actual production, the reduction of ZnFe2O4 is mostly carried out above 1000℃. Therefore, the kinetics of Zn and Fe reduction in the carbothermic reduction of ZnFe2O4 above 1000℃ were studied based on the "unreacted nucleus model" and diffusion theory. The effects of different reduction temperatures on the reduction rates of Zn and Fe at 1000℃, 1050℃, 1100℃ and 1150℃ were investigated in detail. The results show that internal diffusion is the limiting link in the reduction process of zinc oxide in the system, and the apparent activation energy is 218.832 kJ.mol-1; the interfacial chemical reaction is the limiting link of the reduction of iron oxide in the system, and the apparent activation energy is 218.832 kJ.mol-1. It is 111.133kJ.mol-1. According to the research results, the macroscopic kinetic equation of Zn, Fe reduction was established. |
| Proceedings Inclusion? |
Planned: |