Improving the design of industrial microwave processing systems through prediction of the dielectric properties of complex multi-layered materials

摘要: Rigorous design of industrial microwave processing systems requires in-depth knowledge the dielectric properties materials to be processed. These values are not easy measure, particularly when a material is multi-layered containing multiple phases, one phase has much higher loss than other and application based on selective heating. This paper demonstrates ability Clausius–Mossotti (CM) model predict constant materials. Furthermore, mixing rules graphical extrapolation techniques were used further evidence our conclusions estimate factor. The for this study was vermiculite, layered alumina-silicate mineral up 10 % an interlayer hydrated phase. It measured at different bulk densities two distinct frequencies, namely 934 2143 MHz. CM model, ionic polarisability material, gives only prediction experimental data with deviation <5 frequencies. complex refractive index Landau, Lifshitz Looyenga, Goldschmidt, Bottcher Bruggeman–Hanai equations then shown give strong estimation both factor solid compared that powder <1 %. Results obtained from work provide basis electromagnetic consisting high low components.