In particular, centrifugal spray dryers play an extremely important role in the field of liquid process forming and drying. Liquid raw materials can be produced in powder and granular form. Spray drying is therefore an ideal process when the particle size distribution, residual moisture content, bulk density and particle shape meet precise criteria.
The drying characteristics of the centrifugal spray dryer are described as follows.
1、Fast drying speed, the surface area of the material liquid increases greatly after atomisation, and 95% to 98% of the water can be evaporated in an instant, the drying time is only 5 to 15 seconds, with instantaneous drying characteristics.
2. At the same time, a special air splitting device is equipped, so that the resistance during the operation of the equipment is very small, and the treatment air of the dryer is effectively provided. The liquid is pumped from the liquid tank through the filter to the centrifugal atomiser at the top of the dryer, so that the liquid is sprayed into very small mist droplets, and the liquid and hot air come into contact in parallel, so that the moisture evaporates rapidly and dries into finished products in a very short time.
3. With the use of centrifugal spray dryer equipment, the entire production process is simplified and continuous control of production is achieved. For liquids with a moisture content of 40 to 90%, they can be dried into powder in one go, reducing the need for crushing, screening and other processes to improve product purity.
The centrifugal spray dryer can be used to dry the material in a very short time and can effectively maintain the colour, aroma and taste of the material itself. At the same time, the product has good dispersibility, fluidity and solubility, and the particle size, bulkiness and moisture are adjustable within a certain range. In addition, the user can choose the heating method and the dust collection and dust removal method according to the actual situation.