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  • Spray drying is a commonly used method of drying a liquid feed through a hot gas.

  • Typically, this hot gas is air but sensitive materials such as pharmaceuticals, and solvents like ethanol require oxygen-free drying and nitrogen gas is used instead.

  • The liquid feed varies depending on the material being dried and is not limited to food or pharmaceutical products, and may be a solution, colloid or suspension. This process of drying is a one step rapid process and eliminates additional processing.

  • A company in Denmark is the leader in spray drying technology, commercially as well as technically.


  • Three types of atomizers are used in industrial drying: Rotary , Pressure Nozzle, Two - fluid nozzle.

  • The choice of atomizer depends upon the properties of the feed and the dried product specification.

  • The application of new techniques in spray drying of final product gives excellent control of particle size in API production.


  • Spray drying is presently one of the most exciting technologies for the pharmaceutical industry, being an ideal process where the end-product must comply to precise quality standards regarding particle size distribution, residual moisture content, bulk density and morphology.

  • It is widely used for the manufacture of many consumer and industrial products such as instant food, laundry detergents, ceramics and agrochemicals, the growth in pharmaceutical spray drying was driven by a number of advantages over conventional multiple-step processes and competing particle reduction technologies.

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