Rotary dryers are known as the workhorses of the industrial drying industry, but like any robust equipment, they are not immune to processing challenges. The challenges often vary on the specific material being processed, with some requiring additional preparation, and others, routine maintenance. Generally speaking, …
This week’s photo highlights several rotary dryers under production at FEECO. The photo was taken in FEECO’s fabrication facility, just shortly after our founding in 1951. For decades, many industries have been faced with the same problem: product moisture. Depending on material composition, moisture can …
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 …
The rotary dryer is the industrial dryer of choice for everything from minerals and ores to fertilizers and specialty chemicals. One decision buyers are often faced with in selecting a rotary dryer for a given application, particularly when looking to dry high-moisture materials such as …
This week’s photo shows two types of flights in a rotary dryer: standard lifting flights, and advancing flights. Flights, or lifters, are positioned inside the rotary drum and play a fundamental role in the drying process. As the drum rotates, flights lift the material, and …
Rotary kilns (also known as rotary calciners) are used to heat solids to a predetermined temperature in a controlled processing environment in order to create a chemical and/or physical reaction. While rotary kilns have long been used in producing cement, their flexible capabilities have extended …
Our photo this week highlights a frac sand dryer. Internal flight design and placement was customized to maximize heat transfer between…
Rotary kilns use extremely high temperatures combined with controlled retention times to cause a chemical reaction or phase change in a material. At certain temperatures (different per each material), a material will undergo a chemical reaction or phase change. This is often necessary to bring …
Rotary kilns (also known as rotary calciners) are used to heat solids to a predetermined temperature in a controlled processing environment in order to create a chemical and/or physical reaction. While rotary kilns have long been used in producing cement, their flexible capabilities have extended …
Though far less common than the need to dry or thermally treat a bulk solid material, some process settings call for preheating a material in preparation of downstream processing. In achieving this objective and meeting the high tonnages associated with bulk solids processing, rotary dryers …