The ceramic body using a microwave drying attention problems

     When using a microwave drying ceramic body should pay attention to several technical problems.

     (1) the material temperature setting. The material dielectric constant and loss factor with temperature, at 50-100 ℃ rise they are in between, so the use of microwave drying temperature of the material set between 50 to 100 degrees is extremely beneficial, but the ceramic blanks for drying, in order to prevent the body in the dry vapor pressure generated when the water body caused by high burst, body temperature should be controlled below 70 ℃.

     (2) The body of microwave drying moisture content of the applicable range. High moisture content of the green body (70% -90%), the microwave source is overloaded, we can not reflect the microwave energy-saving advantages, microwave power source may result in a serious mismatch due to overloading. Practice has proved that the microwave for about 25% moisture content of the material is dried, the highest efficiency, the best economic benefits. Body between the moisture content of between 5% -10%. Traditional drying method is more economical. Therefore, the moisture content is higher than 10% of the material should be dried using microwave drying methods with conventional mixing mechanism, first with the material which is dried to about 30%, and then microwave drier. For the larger body, the moisture content is low (less than 5%) of the body, if the traditional drying method on the one hand the energy utilization is low, on the other hand may lead to overheating and rupture body, this time using the microwave drying is able to achieve excellent results can best embody the microwave wear suitable depth Japanese uniform heating characteristics.

     (3) microwave radiation harmful to human health, in order to prevent leakage of electromagnetic waves, around the device needs to be installed in a dry electromagnetic shield.

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