Drum dryers were developed in early 1900s. They were used in drying almost all liquid food materials before spray drying came into use. Nowadays, drum dryers are used in
the food industry for drying a variety of products, such as milk product, baby foods, breakfast cereal, fruit and vegetable pulp, mashed potatoes, cooked starch, and spent
yeast.In a drying operation,liquid, slurry, or puree material is applied as a thin layer onto the outer surface of revolving drums that are internally heated by steam. After about three-quarters of a revolution from the point of feeding, the product is dried and removed with a static scraper. The dried product is then ground into flake or
powder. Drum drying is one of the most energy efficient drying methods and is particularly effective for drying high viscous liquid or pureed foods.
Drum dryers were developed in early 1900s. They were used in drying almost all liquid food materials before spray drying came into use. Nowadays, drum dryers are used in
the food industry for drying a variety of products, such as milk product, baby foods, breakfast cereal, fruit and vegetable pulp, mashed potatoes, cooked starch, and spent
yeast.In a drying operation,liquid, slurry, or puree material is applied as a thin layer onto the outer surface of revolving drums that are internally heated by steam. After about three-quarters of a revolution from the point of feeding, the product is dried and removed with a static scraper. The dried product is then ground into flake or
powder. Drum drying is one of the most energy efficient drying methods and is particularly effective for drying high viscous liquid or pureed foods.
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