Working Principle and Production Characteristics of Microwave Dryer for Mica Powder

When mica powder microwave dryer dries by microwave, the solvents of granular products absorb microwave energy. The dipole part of the solvents is coupled with electromagnetic field. The energy of electromagnetic wave is converted into heat energy in the medium, and the temperature of the object rises, so that the solvent inside the object evaporates and dries. If the dehydration speed is properly controlled, the structure of the material can be loosened and expanded at the same time of drying. In this process, the heating temperature can also be properly raised so that the object is in the state of baking. Compared with traditional drying methods, microwave drying equipment for mica powder can directly act on medium molecules and convert them into heat energy. Because microwave has penetrating property, it can heat both inside and outside the medium simultaneously without heat conduction, so the heating speed is very fast. For food with water content less than 30%, the drying speed can be reduced hundreds of times. At the same time, regardless of any shape of the object, because the material is heated inside and outside the medium at the same time, the temperature difference between inside and outside of the material is small, and the heating is uniform. It will not produce the condition of endogenous coke in conventional heating, which greatly improves the drying quality. Therefore, it has the advantages of high drying rate, energy saving, high production efficiency, uniform drying, clean production, easy to realize automatic control, sterilization, environmental protection and improving product quality.

Wet mica powder is a kind of high-quality mineral filler made from high-quality mica raw material, which is washed, impurities removed, soaked, crushed, dried and screened at low temperature. Microwave is an electromagnetic wave with a frequency of 245 MHZ. It oscillates 2.45 billion times per second. It rubs against polar molecules or water molecules and generates heat by friction between them, making the material itself a heater. Because microwave has the ability to penetrate into the interior of matter, the depth of penetration generally varies from several millimeters to tens of centimeters, depending on the frequency. So besides the huge object, microwave can heat both inside and outside the heated object, and there will be no unfamiliar entrainment in the external coke. When using general heating methods, the surrounding environment is heated first, then the surface of the material is heated first by heat transfer or convection of hot air, and then by heat conduction of the object to the interior. Because microwave heating is the simultaneous heating of material inside and outside, the heating time is greatly shortened. With industrial microwave drying equipment as the core, the company specializes in designing and manufacturing a whole drying equipment production line, covering a complete set of industrial automation production line equipment not limited to microwave drying equipment, heat pump drying equipment, hot air drying equipment and supporting conveying machinery. Microwave drying equipment website /