Microwave Drying Behavior of Zinc Leaching Residue

To study the technological possibility of dehydration from zinc leaching residue by microwave heating, the temperature increasing characteristics of zinc leaching residue were studied. At the same time, the influences of the different material quantities, different drying time, and different microwave powers on the relative dehydration rate of zinc leaching residue were investigated, respectively. The results showed that the control temperature of 100 ℃, the microwave power of 750 W, the mass of 50 g, the drying time of 21 min had the best drying effect, and the water removal rate was 95.45%. It was found that the heating rate is directly proportional to the power and inversely proportional to the material quantity.