中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 25 No. 3 March 2015 |
（1. Yunnan Provincial Key Laboratory of Intensification Metallurgy,
Kunming University of Science and Technology, Kunming 650093, China;
2. National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology,
Kunming University of Science and Technology, Kunming 650093, China;
3. Key Laboratory of Unconventional Metallurgy, Ministry of Education,
Kunming University of Science and Technology, Kunming 650093, China;
4. State International Joint Research Center of Advanced Preparation Technology of Superhard Materials,
Kunming University of Science and Technology, Kunming 650093, China;
5. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology,
Kunming 650093, China）
Abstract:Microwave was applied to roasting the zinc oxide fume obtained from fuming furnace for the removal of F and Cl. The effects of important parameters, such as roasting temperature, holding time and stirring speed, were investigated and the process conditions were optimized using response surface methodology (RSM). The results show that the effects of roasting temperature and holding time on the removal rate of F and Cl are the most significant, and the effect of stirring speed is the second. The defluorination rate reaches 92.6% while the dechlorination rate reaches 90.2%, under the process conditions of roasting temperature of 700 °C, holding time of 80 min and stirring speed of 120 r/min. The results indicate that the removal of F and Cl from fuming furnace production of zinc oxide fumes using microwave roasting process is feasible and reliable.
Key words: zinc oxide fume; F; Cl; removal rate; microwave roasting; response surface methodology
