HIGH-EFFICIENCY LOW PRESSURE AGGREGATE HEATING & SAND HEATING

Aggregate heating with a direct fired steam generator is an efficient method commonly employed in concrete production facilities, particularly during cold weather, to thaw frozen materials and elevate the temperature of sand, gravel, and other aggregates in storage bins or piles. Unlike traditional boilers or indirect systems that transfer heat through coils or thermal fluid, a direct fired steam generator combusts fuel (such as natural gas or propane) in a combustion chamber where water is introduced—often sprayed directly into the hot exhaust gases—to produce low-pressure steam almost instantly. This steam is then piped into the aggregate bins through perforated pipes or manifolds, where it condenses and transfers its latent heat directly to the materials, rapidly raising their temperature without significantly altering moisture content