All Blog Posts about ‘Question of the Week’

Question of the Week: What is Sintering?

This article was authored by:

Jenny Seim
Technical Writer

Sintering is the process of heating a material to a point just before melting via a rotary kiln. The objective here is to use the high internal temperature of the rotary kiln to increase the strength of the material. The most common use of this Continue reading →

 

Question of the Week: What Role does Drying Play in Non-Pressure Agglomeration?

This article was authored by:

Jenny Seim
Technical Writer

Drying plays an important role in the non-pressure agglomeration process, both before and after agglomeration. Pre-Drying Drying is often used as a method of pre-conditioning material before pelletization, to help prepare the material for agglomeration. Since moisture is added during the agglomeration process (in the Continue reading →

 

Question of the Week: In Relation to Indirect Rotary Kilns, What is the Cross-Flow Configuration?

This article was authored by:

Jenny Seim
Technical Writer

An important consideration in rotary kiln design is air flow, or the direction in which the process gas moves through the kiln in relation to the material. The cross-flow configuration is specific to indirect-fired rotary kilns. Here, the material and the process gas flow perpendicular Continue reading →

 

Question of the Week: What are the Differences Between FEECO’s Drive Assemblies?

This article was authored by:

Jenny Seim
Technical Writer

FEECO offers a variety of options in drive assemblies for your rotary dryer, cooler, kiln, or granulation drum, all selected based on the requirements of the application. Chain and Sprocket Drive Assembly Chain and sprocket drive assemblies are ideal for smaller drums running up to Continue reading →

 

Question of the Week: What Equipment is Used to Pre-Condition Material for Agglomeration?

This article was authored by:

Jenny Seim
Technical Writer

Pre-conditioning, or preparing material for agglomeration, is critical to agglomeration success; it can help improve further processing, and create a more refined end product. FEECO offers the following pre-conditioning equipment: Rotary Dryer. A material must fall within a set moisture range to agglomerate effectively. Materials Continue reading →

 

Question of the Week: What Role does Green Strength Play in Agglomeration?

This article was authored by:

Jenny Seim
Technical Writer

Green strength, also known as wet strength, refers to a pellet’s strength prior to drying. Pellets need a certain amount of strength to withstand the number of drop points during processing; this includes leaving the agglomeration equipment such as the pan pelletizer or drum agglomerator, Continue reading →

 

Question of the Week: What is Non-Pressure Agglomeration?

This article was authored by:

Jenny Seim
Technical Writer

Non-pressure agglomeration, also known as tumble growth agglomeration, is a process which uses a tumbling motion and binding agent to grow material fines or powders into a spherical pellet form.   Non-pressure agglomeration methods include: Pelletizing (rotary drum or disc pelletizer): a process where material Continue reading →

 

Question of the Week: What is Reduction Roasting?

This article was authored by:

Jenny Seim
Technical Writer

Reduction roasting is the removal of oxygen from a component of an ore, usually through the use of Carbon Monoxide (CO). The CO is typically supplied by mixing a carbonaceous material such as coke or coal with the ore, or by feeding it separately. An Continue reading →

 

Question of the Week: What is the Difference Between a Rotary Kiln’s Working Layer and Insulating Layer?

This article was authored by:

Jenny Seim
Technical Writer

The “working” layer and insulating layer refer to a rotary kiln’s multiple layers of refractory. Refractory is what protects the kiln from high internal temperatures, and maintains heat retention. Sometimes it is desirable to use multiple layers of refractory, especially when higher efficiency is preferred, Continue reading →

 

Question of the Week: What Fuel Sources can FEECO’s Rotary Dryers and Kilns Work With?

This article was authored by:

Jenny Seim
Technical Writer

FEECO’s rotary dryers and kilns can accommodate numerous fuel sources. The chart below highlights the equipment and their available fuel source options: Natural Gas/Propane Fuel Oil Electricity Biomass Combustion Waste Heat Biogas Direct Rotary Dryer  x  x  x  x x Indirect Rotary Dryer  x  x Continue reading →