Effect of microwave drying technology on drying kinetics of Al2O3–ZrO2 composite ceramic powder

Al2O3–ZrO2 composite ceramic is a significant structural material and functional material, the preparation of high-quality powder key step to meeting practical application requirements. The major factor affecting quality drying effect. This paper uses modern microwave technology dry powder. result was indicative that average rate increases with initial moisture content, mass, heating power. Four dynamic models were applied fit empirical data under different pretreatment conditions, Modified Page model can precisely delineate procedure. To evaluate changes in samples before post-drying, specimens characterized by Fourier transform infrared spectroscopy. These results demonstrate microwaves accelerate improve its dispersion. Fick's second law calculates effective diffusion coefficient. When content 5.6%, power 560 W, 15 g, coefficient 0.006361 m2/s. Based on relevance activating energy, energy calculated, which −34.80 g/W. provides basic study theory instructions for even process green metallurgy.