Over the last few years, the maximum drying air temperature used for the VENTILEX fluid bed dryers for Aggregates has increased from 450 to 600 °C [840 to 1112 °F]. This results in more evaporation per m2 [ft2] and thus less electrical energy usage per Ton dried product. Also with higher temperatures the energy efficiency is much better.

The burner housing and the undercase of the dryer are built in high temperature resistant steel instead of stainless steel. Also the construction is different than in the past to avoid problems due to size changes when the temperature of the material changes.

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visit our website for aggregate drying - www.sanddryer.com

Nearly 10 tons/hr of water evaporation in one unit!

Sizes up to 200 tph in one Dryer/Cooler

• Smallest Equipment Footprint for drying of Sand and Aggregates

• Saves More than 40% of Energy over A Rotary Dryer (most times 60%!)

• Recovery of Heated Air Saves Energy

• Very Low Maintenance Cost

• Advanced PLC Controls Maximizes Throughput, Minimizes Gas Cost

* New - Evaporative Cooling + Latent Heat Recovery Saves at least 15% gas cost over all other Fluid Bed Dryers/Coolers!

Tests have shown that evaporative cooling works well with temperatures of ± 45 °C [113 °F]. When the cooling air temperatures are too low, the air is not able to evaporate the moisture. To have efficient evaporative cooling, we can include two heat exchangers in the supply of the installation. The 1st heat exchanger is placed in the exhaust air duct. With this heat exchanger, the latent heat from the exhaust air is used to warm up water to a certain temperature. With a second heat exchanger, the warm water is used for heating the cooling air. The cooling air temperature is controlled at ± 45 °C [113 °F]. The residual moisture in the product is evaporated with the heat in the product. Evaporating the residual moisture in the cooler, with ± 45 °C [113 °F] air temperature means that the product temperature fast drops to the wet bulb temperature. This means that the sand is cooled quicker then normal.

End result: You spend less money drying and cooling ! Up to 60% less than a rotary dryer!