Describe different steps involved in the spray drying of milk. What is the purpose of condensing and homogenization of milk during the manufacturing of dried milk?

Spray drying is a process used to convert liquid milk into powder form by removing the water content. This process involves several steps, including evaporation, atomization, drying, and collection. The following are the different steps involved in the spray drying of milk:

1. Evaporation: The first step in the spray drying process is to evaporate the water content in the milk. This is typically done using a preheater or an evaporator. The milk is heated to a temperature of around 70-75°C to remove the water content.

2. Atomization: Once the milk is evaporated, it is then atomized, or broken down into small droplets. This is done using a spray nozzle or a rotary atomizer. The milk droplets are typically around 50-100 microns in diameter.

3. Drying: The atomized milk droplets are then dried using hot air. The milk droplets are sprayed into a drying chamber, where hot air is blown over them. The hot air evaporates the water ______ _______ __________ __________ __________ ______ _________ ___.
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