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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Another aspect of rotary kiln design is deciding whether to go with a direct fired rotary kiln, or an indirect fired rotary kiln. The difference between the two is how the heat is introduced. In a direct fired rotary kiln, the heat is introduced directly into the internals of the rotary kiln, via a stream ...
Before a rotary kiln can be designed, the material to be processed must go through a thermal and chemical analysis. Getting to know the material you are working with will let you know how the material is going to behave in the rotary kiln. Is your material going to melt? Vaporize? Explode? Things like the ...
Although rotary kilns are designed to be used for driving a chemical reaction, an issue that often comes up in the processing of a material is when to draw the excess moisture from the feedstock. Many times, there is an excess of moisture that needs to be removed from the material before it is converted ...
For many years, rotary kilns have been used across various industries to drive chemical reactions by thermal processing. Rotary kilns have become very established in fields such as cement, lime, and minerals. Because these thermal processing tools have been used almost exclusively in these industries, they have been designed to meet the needs of these ...
Rotary coolers are often an integral part of a thermal process, cooling material as it exits a rotary kiln or rotary dryer, to a manageable temperature for the next step in the process. There are two main types of rotary coolers: a convective rotary cooler, and indirect water deluge rotary cooler. A convective rotary cooler works ...
Previously, we looked at indirect fired rotary kilns in applications such as reactivating spent carbons, pulling valuable materials out of valueless carriers, and conducting thermal processes in inert environments. Now we will look at indirect fired rotary kilns in the application of processing finely divided solids. Indirect fired rotary kilns can be beneficial when the material ...
In the thermal processing industry, rotary kilns are used to cause chemical reactions or state changes in varying materials. As discussed previously in Direct Fired Rotary Kilns vs. Indirect Fired Rotary Kilns: What's the Difference, while direct fired rotary kilns and indirect fired rotary kilns use similar thermal processing principles, they are each beneficial in ...
At Feeco International, we know that down time means money lost. That’s why we’ve developed our unique “unitized” drive base. We developed this unitized base with adjustment sole plate to minimize turn-around time not only during installation, but also during routine maintenance. This time-saver can be used for rotary kilns, rotary dryers, rotary calciners, rotary ...
Feeco International has had much success in the thermal processing industry, with their custom designed rotary 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. ...
In the thermal processing industry, often times a rotary kiln is used to process a wide variety of feed material – from waste sludges to high-value minerals. Within the rotary kiln industry, there are two major subsets: direct fired rotary kilns, and indirect fired rotary kilns. Both kinds of rotary kilns run on the same ...
For the past sixty years, Feeco International has made a name for itself in the thermal processing industry, supplying equipment and solutions to several industries. As an industry leader, thousands of companies have come to rely on Feeco’s expertise in the design, implementation, and service of rotary dryers, among other equipment. Feeco’s superior quality and ...
