about ideal screening equipment, it can screen materials such as many fibers, high viscosity, high humidity, static electricity, and easy to agglomerate. 1 working principle of spray dryer 2 0 2 3 0 5 0 3 1. working principle of spray dryer: 1. principle of spray dryer: the spray dryer uses atomizer to disperse the raw material liquid into liquid droplets, and uses hot gas (air, nitrogen or superheated steam) to dry the liquid droplets to obtain the product by drying. 30 people