A linear non-equilibrium thermal and deformation transport model for hematite pellet in dielectric and magnetic heating was developed to demonstrate the drying behavior and mechanical performance. The moisture ratio profiles, temperature distribution and deformation fitted the experimental values well with reasonable deviations. The collapses and cracks were apt to appear along the circumferential directions of the hematite pellets. The pumping phenomenon occurred during the microwave drying according to the variation of the water saturation at the pellet surface. The maximum water saturation at the sample surface was 0.79, which also confirmed that no existence of water drops or films on the pellet surface. The heat flux driven by polarization relaxation could weaken the heat transfer during the whole drying process. The heat flux driven by the polarization relaxation at the higher electric and magnetic field intensities (3×10³-6×10³ V m^-1, 10-20 A m^-1) regions was higher than that at the lower ones (10³-3×10³ V m^-1, 4-10 A m^-1), and the electric-thermal effects also decreased with both the decreasing of the moisture content and electric field intensity in the sample.

建立了赤铁矿球团在电介质和磁加热中的线性非平衡热变形传递模型，以证明其干燥行为和机械性能。水分比分布，温度分布和变形与实验值吻合得很好，并具有合理的偏差。塌陷和裂纹易于沿着赤铁矿颗粒的圆周方向出现。根据颗粒表面水饱和度的变化，在微波干燥过程中会发生泵送现象。样品表面的最大水饱和度为0.79，这也证实了在丸粒表面上不存在水滴或薄膜。极化弛豫驱动的热通量可能会削弱整个干燥过程中的热传递。³ -6×10 ³ V M ^-1，10-20 A M ^-1）的区域比在较下层更高（10 ³ -3×10 ³ V M ^-1，4-10 A M ^-1），随着样品中水分含量和电场强度的降低，电热效应也随之降低。