Rotary drum dryers are an essential production tool in a variety of industrial settings. From ore drying to fertilizer and soil amendment production, rotary dryers are used to process thousands of tons of material each and every day throughout nearly every industry imaginable. While the …
This week’s photo highlights the interior of a batch rotary kiln. The rod-like structures at the bottom of the image (labeled “C”) are two thermocouples. They are typically used in the kiln to measure bed and exhaust gas temperatures. The upper rod is an airline …
Indirect-fired rotary kilns, also commonly called calciners, are a specialized thermal processing machine used to cause chemical reactions and phase changes in materials for a variety of industrial purposes. Used in settings where the processing environment must be kept inert, or where entrainment of fines …
What is Metallurgical Coke? Aka: coke, met coke Metallurgical coke is created through the destructive distillation of coal or coal blends. This thermal treatment drives off volatile components and leaves behind a solid carbon material (note that this is different from petroleum coke, which is …
Feasibility testing for drum drying processes offers valuable information when designing an industrial drying system. Feasibility testing offers the opportunity to confirm the viability of your intended process, as well as to work out process variables and other unknown data points, helping to define a …
This week’s photo highlights a rotary kiln dam in 3D. Oftentimes, it is necessary to increase retention time and/or bed depth in a kiln. This is achieved through the use of a dam. A rotary kiln dam works by forcing material to build up behind …
This week’s photo shows a batch kiln from FEECO’s Innovation Center. The batch kiln can be used for a variety of high-temp, thermal process testing applications, including waste incineration, mineral roasting, proppant sintering, and more. The batch kiln simulates conditions of a commercial size rotary …
A rotary dryer’s flights, or material lifters, work by lifting the material and dropping it through an air steam. This process creates a curtain, or a shower of material spanning the width of the drum’s interior. The curtain maximizes heat transfer between the material and …
Our photo this week is a 3D rotary cooler. Rotary coolers are a common equipment of choice when it comes to cooling bulk solids. They utilize direct contact between the material and cooling air, in combination with lifting flights, to maximize heat transfer between the material …
This week’s highlighted resource is a Slideshare presentation on rotary dryer sizing and design. The Rotary Dryer Sizing and Design slide deck is a great introduction to the complex process of designing a custom rotary dryer for any industry. Material characteristics that affect design, processing …