Linked from
The 10 pages that link to Spray drying, each with the reason it gives.
Freeze-dryingCompared with: It is faster and often cheaper, but heat can damage sensitive materials.
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.
Vacuum dryingCompared with: It dries droplets rapidly through hot gas rather than reduced pressure.
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.