Linked from
The 10 pages that link to Spray drying, each with the reason it gives.
Milk powderRelated: Most milk powder is made by spraying concentrated milk into heated air.
Instant coffeeRelated: It turns brewed coffee extract into fine powder in a continuous process.
Drops and bubblesRelated: Droplet size and evaporation govern the resulting particles.
Non-dairy creamerRelated: It is a common way to make shelf-stable powdered creamer.