FEECO International has had much success in the thermal processingindustry, with their custom designedrotary dryers, rotary kilns, rotary calciners, and rotary coolers. Part of their success is owed to their lab, which has state of the art equipment and highly trained technicians to run tests that assist in determining custom engineered needs. One piece of equipment that can be utilized in the FEECO lab to determine custom rotary kiln needs, is the batch rotary kiln.
The FEECO batch rotary kiln has a diameter (inside refractory) of 18 inches, with a length of 24 inches. This rotary kiln features a refractory-lined rotary vessel with variable speed control and instrumentation to provide temperature profiles along the material bed and gas phase.
The kiln is propane-fired, with the option for providing an oxidizing or reducing gas environment. Finally, the rotary kiln exhaust can be treated with a secondary combustion chamber, wet scrubber, or baghouse for specific pollution control requirements.
This FEECO batch rotary kiln is used to simulate the conditions in continuous commercial rotary kilns. Sizing and retention time requirements in a commercial unit can be estimated by test times in a batch kiln. The batch kiln is lined with lightweight castable refractory, and heated with a propane burner.
The rotary kiln can be operated to heat solids up to 3000ºF (1650ºC) with the firing maintained from highly oxidizing to sub-stoichiometric.
The gas temperature profile is maintained to achieve what is expected in a commercial kiln. A combustion chamber can be used to avoid direct flame impingement onto the solids.
The data from the tests, along with the chemical and physical analyses can be used in determining the necessary commercial kiln size and process operating conditions. The batch kiln can also be used to help determine the conditions to be used in pilot plant test.
Typical applications for rotary kilns include waste lime recovery, proppant manufacture, clays, thermal desorption of organic / hazardous wastes, mineral roasting, specialty ceramics, plastic processing, gypsum calcining, tire pyrolysis, bauxite calcining, pigments, catalysts, phosphate productions, etc.
With so many applications and varying materials, it is easy to see how test runs in the Feeco batch rotary kiln may be a valuable investment for a number of process development and scale-up projects for new thermal process technologies.
For more infomation on FEECO’s batch kiln, contact them today!
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