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 3DÂ 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 …
Rotary kilns use high temperatures to cause a chemical reaction or physical change in a material. In most cases, these high temps would destroy an unprotected carbon steel shell, and for that reason, refractory is used. Direct-fired rotary kilns employ refractory; indirect-fired kilns do not. …
This week’s highlighted resource is a web page on spent carbon reactivation. Activated carbon is increasingly becoming more popular as an adsorbent in many applications. One benefit to this amazing adsorbent is its ability to be reactivated and reused. This page covers the process of …
Direct and indirect-fired rotary dryers are used in a variety of industrial settings to dry bulk solids. While the two are both comprised of a rotating drum and function to reduce a material’s moisture, several differences between direct and indirect dryers exist: Operation: direct-fired dryers …
This week’s highlighted resource is a Slideshare presentation on thermal testing with rotary kilns. Rotary kilns are an integral piece of equipment in many industrial processes, with new applications developing all the time. Thermal Testing with Rotary Kilns takes a look at the many reasons for …
Rotary dryer shells can be constructed from a variety of materials, including: Carbon steel Stainless steel Hastelloy Inconel And other alloys Dryer shells can also be tailored in many ways, depending on the material and process requirements of the customer. For example, shell thickness can …