Rotary dryer misalignment is oftentimes the result of improper base installation. Misalignment in the base will quickly spread through the rest of the drum, causing wear and damage to other drum components. In addition, misalignment can occur naturally over time as part of normal rotary …
In this week’s photo, a FEECO Customer Service Engineer is checking for cracks in the refractory of a rotary kiln. Cracks periodically arise within the kiln’s refractory because certain areas are exposed to more direct heat. The area closest to the combustion chamber is the …
Today’s photo highlights a rotary dryer in FEECO’s Fabrication Facility. The drum was recently painted, and will soon be ready for shipment. This particular dryer features our direct drive option, the mechanism that causes the drum to rotate. It eliminates the need for a girth …
Flights, also known as “fins” or “material lifters,” are commonly used in both rotary dryers and coolers to maximize heat transfer between the material and the drying or cooling air. Affixed to the interior of the drum, they pick up the material as the drum …
Today’s photo shows an indirect batch rotary kiln in the FEECO Innovation Center. Indirect kilns heat solids to the point where a desired chemical reaction or phase change takes place. Unlike their direct-fired counterparts, indirect kilns are used when a material cannot come into contact …
Soda ash, or sodium carbonate (Na2CO3), is a versatile alkali material, critical in the production of a litany of products and materials. From detergents and chemicals, to consumer products and water softeners, this material can be found in many of the products we interact with throughout …
An important consideration in rotary kiln design is air flow, or the direction in which the process gas moves through the kiln in relation to the material. The cross-flow configuration is specific to indirect-fired rotary kilns. Here, the material and the process gas flow perpendicular …
Catalysts are an invaluable tool in many industrial processes, helping to facilitate reactions between materials. They are so important in fact, that some experts estimate they are responsible for 85-90% of products in the chemical industry.¹ As the role of catalysts in industry continues to …
This week’s photo shows the interior of a rotary kiln, as a technician works to remove build-up on the refractory. Build-up can sometimes occur in an over-temperature condition which causes product to melt and become sticky. A primary design requirement with all rotary kilns is …
As the world continues to move away from fossil fuels, pyrolysis is becoming an increasingly important tool, helping to create a more circular economy by opening up opportunities in the production of alternative fuels from a variety of wastes. The rotary pyrolysis kiln is chosen …