This week’s photo features two lifter designs. Lifters, also known as fins or flights, are commonly added to the interior of a rotary dryer to assist in the industrial drying process. Their overall objective is to promote efficient heat transfer between the material and the …
Rotary kilns, like any other high-performing piece of equipment, need regular inspection and maintenance to ensure ideal operation. The list below highlights the areas of a kiln that should consistently be inspected: Refractory. Direct heat can cause the kiln’s refractory to become tremendously dry, and …
Today’s photo shows the interior of a batch rotary kiln. The photo was taken at FEECO’s Innovation Center in Green Bay, WI (USA), where we perform thermal tests on a variety of materials. Batch kilns are ideal for feasibility testing and defining process variables before …
Today’s photo highlights a batch rotary kiln in use at the FEECO Innovation Center. A chute, pictured left, carries the material to be processed, transporting it to the kiln’s interior. The two chords, or thermal couples, read the bed (material) and air temperatures during the …
This week’s photo shows a rotary cooler, with flights affixed to the drum’s interior. The photo was taken in 1961, just ten years after FEECO was founded. Flights play a large role in industrial cooling, as they increase the efficiency of transfer between the material …
Generally speaking, rotary dryers are the sand dryer of choice when it comes to frac sand, offering many benefits over other drying options. One reason rotary dryers are chosen over other dryer types is for their ability to accept large throughputs. Rotary dryers are high …
In this week’s photo, a crane is hoisting a rotary dryer onto a semi-truck bed. The semi-truck will travel at night from Green Bay, WI to Lacrosse, WI, and from there, will be loaded onto a barge. The dryer will then make its way down …
This week’s photo shows the interior of an indirect-fired rotary kiln. Indirect kilns are used in various process settings where the processing environment must be tightly controlled, such as when processing materials that cannot be exposed to oxygen, or materials that must remain sterile, as …
Our photo this week comes from the FEECO Lab, and showcases the lab’s pilot scale indirect kiln. Indirect kilns are used for a variety of applications and materials. In general, there are a few reasons why it may be desirable to utilize an indirect kiln …
This week’s photo shows pellets inside of a rotary dryer. The image was taken at FEECO’s lab testing center, where dryers are often used both prior to and post agglomeration processing. Feedstock must be within an ideal moisture range in order for agglomeration to occur. …