High drying speed atomizes material into liquid, the surface of the material increase greatly. It only takes few seconds to evaporate 95-98% water in a hot air flow. This is especially suitable for drying the heat sensitive materials. The final product has features of good uniformity, flow ability, and solubility. It is in a high purity and quality as well. The production procedure is simple,operation and control are easy. For material contains 40-60% water(special material can contain more than 90%), it can be dried into powder or particles once a time. After the drying process, there is no need for smashing and sorting, so as to reduce the operation procedures in the production and to enhance the product purity. The product particle diameters, losseness and water contents can be adjusted through changing the operation condition whining a certain range. It is very convenient to carry out control and management.