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 ...
The heat transfer properties of a material are also important to be aware of before sizing up your rotary dryer. It is possible for two materials to have the same percentage of moisture, but very different heat transfer properties, which will call for different drying needs. Let’s look at an example. Let’s pretend that glass ...
Another key factor in sizing a rotary dryer is determining the specific heat of a material. Specific heat is defined as how much energy it takes to raise 1 gram of material 1 degree Celsius. In more simple terms, it’s how resistant a material is to heating. Materials can have very different values of specific ...
Bulk density is another characteristic that is important to know when sizing a rotary dryer. Bulk density is the weight of a material per a specific volume. Typically, this is calculated in pounds per cubic foot in US units or kg/m3 in metric units. Let’s say you have something that is 50 lb./ft3. This means ...
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 ...
Running something through a rotary dryer may seem like a simple task, but there is more to it than meets the eye. Feeco's state of the art lab testing and tolling facility runs many tests in order to run materials through a rotary dryer at the most efficient level. Many times, before a material runs ...
When it comes to rotary dryers, let's face it: we're not the only ones who make them. So a lot of people ask us, why are Feeco's rotary dryers any better than someone else's. Although there are many reasons why Feeco stands out in the thermal processing industry, one reason we are particularly proud of, is ...
Just 41 years ago, Senator Gaylord Nelson set aside April 22 as Earth Day; a day to honor and raise environmental awareness and to aid in the effort to put regulations on toxins going into the environment. This April 22, 2011, Feeco International will be celebrating Earth Day the same way it celebrates every other day, ...
Feeco's YouTube page has been getting more lively as more videos are added to the Feeco International channel. These videos, ranging from manufacturing and lab testing to just plain what's new, are a great way to stay informed on what's going on at Feeco. Currently, Feeco's channel features several lab testing videos, visits from politicians, and ...
