The Process Advantages of Direct-Fired Dryers

Rugged design well suited for handling high process rates of inorganic materials such as aggregate, sand, and foundry waste.
Uses all three forms of heat transfer.
Due to the lifting design and hotter gas temperature, direct fired dryers can accommodate high moisture materials with smaller air pollution control system demands than other competing technologies.
Allows for greater production rates with the most efficient use of fuel.
Can accommodate high-temperature heating for processing materials beyond just moisture removal.
Greater ability to handle upset conditions occurring upstream.
Creates an effective flashing off of moisture while maintaining a steady increasing product temperature.
Offers two modes of operation with individually separate benefits (counter-current vs. co-current).