Ye Xiaolei, Guo Shenghui, Qu Wenwen, Yang Li, Hu Tu, Xu Shengming, Zhang Libo, Liu Bingguo, Zhang Zimu
Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China.
Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China.
J Hazard Mater. 2019 Mar 15;366:432-438. doi: 10.1016/j.jhazmat.2018.12.024. Epub 2018 Dec 10.
The exploration of the dielectric properties of waste hydrodesulfurization catalysts has important guiding significance for the development of microwave heat treatment of waste hydrodesulfurization catalysts for the recovery of valuable metals. The resonant cavity perturbation technique was used to measure the dielectric properties of waste catalyst and the mixture of waste catalyst and NaCO during roasting from room temperature to 700 °C at 2450 MHz. The heating properties of the waste catalyst and mixture of waste catalyst and NaCO were determined in the microwave field. The results show that the waste catalyst and the mixture of waste catalyst and NaCO exhibit strong microwave response capability, and the dielectric constant, dielectric loss factor, and dielectric loss tangent increase with increasing temperature; from 20 to 300 °C, the waste catalyst and the mixture of waste catalyst and NaCO heated at a slower rate, while the material heated rapidly from 300 to 700 °C. In addition, the mechanism of microwave action has been proposed based on the study of dielectric properties and heating properties in the microwave field.
探索废加氢脱硫催化剂的介电性能，对于开发用于回收有价金属的废加氢脱硫催化剂微波热处理技术具有重要的指导意义。采用谐振腔微扰技术，在2450MHz频率下，测量了废催化剂以及废催化剂与碳酸钠混合物在室温至700℃焙烧过程中的介电性能。测定了废催化剂以及废催化剂与碳酸钠混合物在微波场中的加热性能。结果表明，废催化剂以及废催化剂与碳酸钠混合物表现出较强的微波响应能力，介电常数、介电损耗因子和介电损耗正切随温度升高而增大；在20至300℃范围内，废催化剂以及废催化剂与碳酸钠混合物升温较慢，而在300至700℃时物料升温较快。此外，基于对微波场中介电性能和加热性能的研究，提出了微波作用机理。
