Carbell Kilns
CARBELL® KILNS
Nutec Bickley developed this concept and has delivered hundreds of Top hat kilns to a variety of ceramic product manufacturers worldwide.
The Carbell ® kiln is designed for a stable and repeatable seal between the kiln and kiln car, while providing a strong and robust structure for the refractory insulation.
Carbell kilns are also referred to Top Hat kilns, but they were developed initially by Bickley who trade marked the "Carbell" name. The industrial Kiln is lifted vertically clear while kiln cars are loaded and unloaded on rails. Once loaded, the kiln is lowered down onto the cars; when the bell is fully lowered, a seal blade on the bell structure engages the sand seal trough around the perimeter of the car. The blade is made of alloy steel and is water cooled, providing a robust and durable seal mechanism. When the kiln is down and sealed, the temperature is increased to top temperature and down again following a set cycle automatically.
The Carbell kiln is designed for a stable and repeatable seal between the kiln and kiln car, while providing a strong and robust structure for the refractory insulation. This is essential for firing at high temperatures but is also beneficial at lower temperatures since the industrial kiln seal is more reliable than a shuttle style of door seal.
One of our most innovative designs was the Carbell kiln. The success of this design made it a standard kiln within the ceramic industry with worldwide popularity and it is still used today in industries right across the world.
The combination of improved sealing, burner arrangement and downdraft design results in the best possible temperature uniformity for a batch type kiln of this size.
Downdraft ventilation
The exhaust of the Carbell kiln is a downdraft design through one or more flues in the car(s). The underfloor flue aligns with the car flues when positioned under the bell. This underfloor flue is connected to an exhaust fan that controls the pressure inside the industrial kiln. Automatic pressure control is achieved by varying the speed of the fan and is crucial for achieving fully optimized industrial kiln temperature control.
Uniformity guaranteed
As the combusted gases exit the burner ports and lose their velocity, they are pulled through the load towards the car flue(s). This creates excellent temperature uniformity throughout the firing load. Furthermore, once the burner gas is turned off during the cooling stage of the cycle, the burner air continues to exhaust through the load, thereby promoting more uniform and controllable cooling by ‘scrubbing’ heat out of the load.
