FEECO, an engineering and equipment company, is excited to announce that they will be shipping a massive rotary kiln across the United States. At over 50 ft. long, and 13.5 ft. in diameter, FEECO’s latest custom rotary kiln weighs in at approximately 125,000 lbs. This massive piece of machinery is manufactured right here in Green Read More…
Whether you are using a rotary dryer, rotary kiln, or rotary cooler, there is one thing that all these instruments have in common: they all use methods of heat transfer to carry out their jobs. Heat transfer is how heat moves from one source to another. Understanding the types of heat transfer, and how they Read More…
After a material is chosen for your rotary kiln refractory, you must decide the desired heat loss. When efficiency is of concern, or very high temperatures are involved, often it is desirable to use multiple layers of refractory: a “working” layer, and an insulating layer. The working layer is what is in direct contact with Read More…
Refractory is what protects the shell of a direct rotary kiln from the heat within, so as you can imagine, choosing a quality refractory that is right for your material is extremely important in the design of a rotary kiln. Choosing a refractory that will fail quickly can have severe effects on the life of Read More…
Rotary drums are a valuable investment with the potential to have a long productive life with proper maintenance. While protecting this investment is not hard, it does take know-how, and routine maintenance. Luckily, this routine maintenance and knowledge go a long way in recognizing potential problems, and spotting when a rotary drum is in need Read More…
Holding the appropriate temperature within a rotary kiln is what allows the desired chemical reaction to occur. Sustaining that temperature, however, can be difficult if the right seal is not chosen. Almost all rotary kilns run at a negative pressure, meaning gas doesn’t leak out, but rather, air leaks in. Because rotary kilns are always Read More…
For various reasons, it is often desirable to increase retention time in the rotary kiln. In order to do this, the loading, or how much material is in the rotary kiln at one time, needs to be increased. This is done by adding what is called a “dam” to the interior of the rotary kiln. Read More…
Indirect fired rotary kilns are an effective method of processing materials, but sometimes it is necessary to take additional measures to ensure that the rotary kiln is processing efficiently. Indirect fired rotary kilns create heat transfer by conduction through the shell of the rotary kiln, rather than by means of a hot gas stream. Because Read More…
Bearing and drive components for a rotary kiln are similar to those on a rotary dryer. There are two types of arrangements for rotating a rotary dryer or rotary kiln: a chain and sprocket, or a gear drive. For either arrangement, there are two tires on the rotary drum that sit on top of trunnion Read More…
Once we have our preliminary rotary kiln size, we can start to think about the details of the rotary kiln internals. In the case of a direct fired rotary kiln, in which the hot stream of gas flows directly through the interior of the rotary kiln, refractory is usually needed. Arguably one of the most Read More…
