中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 30 No. 12 December 2020 |
（1. Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China;
2. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China;
3. Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kuming University of Science and Technology, Kunming 650093, China;
4. National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kuming University of Science and Technology, Kunming 650093, China;
5. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China）
Abstract:A new method was developed to optimize the microwave heating thickness of the spent automobile catalyst in order to improve the uniform distribution of the temperature field. The average penetration depth and the microwave heating thickness of the spent automobile catalyst were calculated by Gauss model and numerical calculation based on dielectric loss tangent and reflection loss. The results showed that the spent automobile catalyst was a medium loss material. The average penetration depth was 1.11 m from room temperature to 800 °C. The optimum microwave heating thickness of the spent automobile catalyst was about 0.83 m or 0.75 times of the average penetration depth. Industrial application analysis indicated that the optimization of heating thickness could improve the uniform distribution of the temperature field and reduce energy consumption.
Key words: spent automobile catalyst; microwave; heating thickness; optimization
