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 ...
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 ...
Another key phase in rotary dryer design is determining the best flights to use inside the rotary dryer. Flights are like specially designed fins, that pick up the material as the rotary drum rotates, and then gradually drop the material through the stream of gas, like a clothes dryer. This falling of the material is ...
Another characteristic to look at is the size of pellets. This will combine with specific heat, heat transfer, and percent moisture to help determine the retention time, or the amount of time the material needs to be in the dryer. In turn, the retention time will help determine the needs of a rotary dryer. Retention ...
What does atmosphere have to do with rotary dryer design, you ask? Well actually, a lot. The needs of a rotary dryer can differ greatly from region to region, due to different climates. Things like humidity, temperature, and elevation can play a big part in determining the specifics of your rotary dryer. Let’s take humidity ...
After you have determined the characteristics of your material, it is necessary to look at the limitations set by your material, as these too will play a part in the design of the rotary dryer. For example, some materials may not be able to come into contact with oxygen. In this case, an indirect rotary ...
So you are in need of a rotary dryer. Where do you go from there? There are a lot of factors that come into play when determining the needs of a rotary dryer, and determining your needs can easily become overwhelming. Take it a step at a time: we’ve developed this series to help you ...
Next week, FEECO will be releasing part one of a series covering the basics of designing a rotary dryer custom to a material. The eight part series will not only cover defining the material to be dried in terms of percent moisture, bulk density, specific heat, heat transfer, and material limitations, but will also ...
