All Blog Posts about ‘Question of the Week’

Question of the Week: How do Advancing Flights Function in a Rotary Dryer?

This article was authored by:

Jenny Seim
Technical Writer

Rotary Dryer Advancing Flights

Advancing flights help move, or advance, the material into the rotary dryer to prevent buildup near the wet feed inlet. In addition, advancing flights allow the material to dry before it moves on to the next set of flights, a process that can help prevent sticking inside Continue reading →

 

Question of the Week: What’s the Difference Between a Rotary Dryer and a Rotary Kiln?

This article was authored by:

Jenny Seim
Technical Writer

What is the Difference Between a Rotary Dryer and a Rotary Kiln

Rotary dryers and rotary kilns share similar thermal processing functions, but each is intended for very different industrial applications. Rotary dryers operate at inlet temperatures between 600 and 1400ºF, and are predominately used to draw moisture out of a material. Rotary kilns, on the other Continue reading →

 

Question of the Week: Is a Rotary Drum or Disc Pelletizer Right for my Process?

This article was authored by:

Jenny Seim
Technical Writer

Rotary Drum vs. Disc Pelletizer

During the pursuit of an effective non-pressure agglomeration solution, the choice between a rotary drum and a disc pelletizer often arises. To help determine the best equipment for your material and process, the following should be taken into consideration: recycle, throughput, and maintenance. Recycle. One Continue reading →

 

Question of the Week: How do you Tell if a Rotary Drum is Misaligned?

This article was authored by:

Jenny Seim
Technical Writer

Rotary Drum Misalignment

Several signs indicate that a rotary drum is likely misaligned, including: Extensive tire/wheel wear Damage to the tire/wheel Pinion/girth gear wear Pinion/girth gear damage Extensive thrust roller wear Damage to the thrust roller Major contact between the drum and thrust rollers Auditory clues can also Continue reading →

 

Question of the Week: What is the Role of Screening in Agglomeration?

This article was authored by:

Jenny Seim
Technical Writer

What is the Role of Screening in Agglomeration

Screening is a process through which material or particles are segregated into groups based on their size. The undersize particles are segregated to one group, oversize particles in another, and on size yet another. Screening helps to ensure that feedstock is uniform and only material Continue reading →

 

Question of the Week: What are the Benefits of Agglomeration?

This article was co-authored by:

Jenny Seim
Technical Writer

Chris Kozicki
Agglomeration Expert

Sample pellets from FEECO's lab.

Agglomeration, the process of particle size enlargement, is used to solve material problems and improve product characteristics. In general, agglomerating a material can offer many benefits, including:     End product benefits– dust-free product handling, and improved product characteristics. Ex: The agglomeration of cattle manure Continue reading →

 

Question of the Week: Why are Flights Used in a Rotary Dryer?

This article was authored by:

Jenny Seim
Technical Writer

Rotary Dryer Flights

Flights, also known as “fins” or “material lifters,” are commonly used in both rotary dryers and coolers to maximize heat transfer between the material and the drying or cooling air. Affixed to the interior of the drum, they pick up the material as the drum Continue reading →

 

Question of the Week: How does a Pin Mixer Work?

This article was authored by:

Carrie Carlson
Technical Writer

Pin Mixer

Pin mixers are industrial mixing devices used to condition, agglomerate, and mix bulk materials, and work most effectively with fine materials such as powders. They utilize an intense spinning motion, in the presence of a binder, to produce small, dense agglomerates. Rods, or “pins,” are Continue reading →

 

Question of the Week: What is the Difference Between Pelleting and Pelletizing?

This article was authored by:

Jenny Seim
Technical Writer

Difference Between Pelleting and Pelletizing

Pelleting and pelletizing are two terms often used interchangeably, though their processing methods do differ. Pelleting commonly refers to the extrusion process, where cylindrical pellets are formed by forcing material through a die. It is most often used with wood, fuel and feed products (such Continue reading →

 

Question of the Week: How do you Combat Caking in a Rotary Dryer?

This article was authored by:

Jenny Seim
Technical Writer

How to Combat Caking in a Rotary Dryer

Disparate materials can often clump together, or stick to the interior of the rotary dryer during the industrial drying process. This is referred to as unwanted agglomeration, or caking. Caking can occur for many reasons, but most often is the result of material characteristics that foster Continue reading →