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 …
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 …
Catalysts continue to play a growing role in modern industry, carrying out an array of processes that otherwise might not be possible, promoting more sustainable industries through efficient processing, reducing toxic emissions, and more. As the use of catalysts grows, so too does the amount …
Rotary kilns, like any other high-performing piece of equipment, need regular inspection and maintenance to ensure ideal operation. The list below highlights the areas of a kiln that should consistently be inspected: Refractory. Direct heat can cause the kiln’s refractory to become tremendously dry, …
The trunnion wheel, also known as a trunnion roller, is a key structural component of any rotary drum base. What trunnion wheels are available? FEECO supplies trunnion wheels in 4140 or 4340 stainless steel. Sizes are available all the way up to 48” in diameter. …
Rotary kilns (also known as rotary calciners) are used to heat solids to a predetermined temperature in a controlled processing environment in order to create a chemical and/or physical reaction. While rotary kilns have long been used in producing cement, their flexible capabilities have extended …
Rotary kilns use extremely high temperatures combined with controlled retention times to cause a chemical reaction or phase change in a material. At certain temperatures (different per each material), a material will undergo a chemical reaction or phase change. This is often necessary to bring …