Turning Liquid Milk into Fine Powder the Process of Milk Powder Spray Drying

1. Equipment overview:

Milk powder spray drying is a widely used process in the liquid process forming and drying industry. It is suitable for producing powdery and granular solid products from solutions, emulsions, suspensions and paste liquid raw materials. Therefore, spray drying is an ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet certain standards.

2. Equipment features:

● The drying speed is fast. After the material liquid is atomized, the surface area is greatly increased. In the hot air flow, 95%-98% of the water can be evaporated in an instant. It only takes a few seconds to complete the drying. It is especially suitable for drying 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 and control are convenient. Liquids with a moisture content of 40-60% (up to 90% for special materials) can be dried into powder products at one time. There is no need to crush and screen after drying, which reduces the production process and improves product purity. Product particle size, bulk density, and moisture content can be adjusted within a certain range by changing operating conditions, making control and management very convenient.

3. Engineering principles:

The principle of milk powder spray dryer is that the air is filtered and heated and enters the air distributor at the top of the dryer. The hot air enters the drying chamber in a spiral shape evenly. The liquid material passes through the high-speed centrifugal atomizer at the top of the tower and is (rotated) sprayed into extremely fine mist-like droplets, which are in parallel contact with hot air and can be dried into finished products in a very short time. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the waste gas is exhausted by the fan.