The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, and 95%-98% of the water can be evaporated instantly in the hot air flow, and the drying time is only a few seconds, especially suitable for the drying of heat-sensitive materials. The product has good uniformity, fluidity and solubility, high product purity and good quality. The production process is simplified and the operation control is convenient. For the moisture content of 90% or more (special materials can reach 40%-60%) of the liquid can be dried into powder and granular products at one time, no need to crush and screen after drying, reducing the production process and improving product purity. The product particle size, bulk density and moisture can be adjusted within a certa.