All Blog Posts about ‘Rotary Kilns’

Photo of the Week: Direct-Fired Rotary Kilns

This article was authored by:

Jenny Seim
Technical Writer

This week’s photo highlights two direct-fired rotary kilns. Rotary kilns are a significant investment in any thermal processing operation. That’s why FEECO’s kilns are always precisely engineered and fabricated to meet the requirements of the specific process and material at hand. A general overview of Continue reading →

 

R&D Around Driving Value from Red Mud Increases

This article was co-authored by:

Process and Sales Engineer
Thermal Processing Expert

Carrie Carlson
Technical Writer

Red mud is a byproduct of aluminum production, in which alumina is extracted from bauxite ore via the Bayer process. Unfortunately, for each ton of aluminum produced, around 1-2 tons of red mud are also produced, creating a massive amount of industrial waste to manage. Continue reading →

 

Photo of the Week: 3D Combustion Chamber

This article was authored by:

Jenny Seim
Technical Writer

Today’s photo is a 3D combustion chamber. Combustion chambers are used to keep material from coming into direct contact with the burner flame in either a rotary dryer or kiln. The combustion chamber houses the combustion reaction, and directs the airflow into the drum. The Continue reading →

 

Aluminum in a Low Carbon Economy

This article was co-authored by:

Walter Hawkins
Process Sales Engineer

Carrie Carlson
Technical Writer

Often called the miracle metal, aluminum is valued for a number of properties, including being lightweight, durable, corrosion-resistant, highly conductive, and more. These properties allow aluminum to be useful in all sorts of applications, from packaging, to vehicles, and even construction. Earlier this year, the Continue reading →

 

Question of the Week: What Causes Refractory Failure in a Rotary Kiln?

This article was authored by:

Jenny Seim
Technical Writer

Cycling and chemical incompatibility are the two main causes of refractory failure in a rotary kiln. Cycling Cycling is the heating up and cooling down of a rotary kiln, and it is the largest source of refractory failure. Refractory expands with the kiln as it Continue reading →

 

Photo of the Week: Batch Rotary Kiln Test

This article was authored by:

Jenny Seim
Technical Writer

Our photo this week shows a batch rotary kiln test conducted in the FEECO Innovation Center. The batch kiln is used to simulate the conditions of a continuous, commercial rotary kiln. The kiln is lined with a lightweight castable refractory and heated with a propane burner. Continue reading →

 

Everything You Need to Know on Rotary Kiln Refractory

This article was co-authored by:

Walter Hawkins
Process Sales Engineer

Carrie Carlson
Technical Writer

Refractory, or the lining utilized on the interior of rotary kilns, is a critical component in ensuring process efficiency and prolonging the life of a rotary kiln. Here, we’ll discuss everything you need to know about refractory, including how it works, the different types, and Continue reading →

 

Biochar Holds Potential for Drastic Reduction of Healthcare Costs and Air Pollution

This article was co-authored by:

Walter Hawkins
Process Sales Engineer

Carrie Carlson
Technical Writer

Yet another application for biochar looks to be on the horizon; a growing number of studies are proving that biochar could be an effective tool in managing air quality, with one study finding that the charcoal-like material has the potential to significantly reduce air quality-related Continue reading →

 

Question of the Week: What is a Rotary Kiln Bed Disturber?

This article was authored by:

Jenny Seim
Technical Writer

Bed disturbers are used in both direct and indirect-fired rotary kilns to promote uniform heating of the material. The bed of material should roll, not slide, throughout the kiln in order to expose fresh material to the process. This rolling action allows for even heat Continue reading →

 

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 →