When planning a new industrial process or updating an existing one, a number of different drying technologies can be used. The properties of the material being processed must be considered carefully for a qualified selection of the drying technology. Specific material properties include the product’s temperature sensitivity, size distribution, moisture content and any special characteristics. Depending on the material specifications, different types of dryer technology may be more or less suited for the application.
Proper specification of the material allows for proper consideration of the numerous drying technologies available — and the optimal selection of a type of industrial dryer. Incorrectly chosen dryers can lead to lower drying efficiency (leading to higher-than-desired moisture content), clumped product and, in some cases, burnt product. Additionally, some dryers have multiple process functions, including calcining, cooling, de-dusting and cleaning. Depending upon the material requirements, various supporting process roles often are best suited by a particular drying technology.