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 …
Today’s photo highlights a girth gear (left) and gear lubrication nozzle (right), both components of a rotary drum. The gear drive assembly is mounted on the outside of the shell circumference. It meshes with a small gear drive, and causes the rotary drum to rotate. …
Agglomeration is a particle size enlargement technique used to solve a wide array of material problems and improve product performance through controlling particle characteristics. Offering a number of benefits, agglomeration is used in a myriad of ways throughout nearly every industry working with bulk solids. …
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 …
This week’s photo is a hammer mill in 3D. The FEECO hammer mill is designed to reduce dry and semi-moist materials, specifically granulated or pelletized materials, to the product range of minus 4 mesh to plus 20 mesh. Commonly processed materials include aggregates, minerals, ores, …
Tires, or riding rings, and trunnion wheels (rollers) are the support base on which a rotary drum is mounted. As the primary point of contact and rotational movement, wear on tires or trunnions is an early indicator of an underlying issue, making identifying wear a …
This week’s highlighted resource is a project profile pin mixers for coal dust suppression. Pin mixers are the preferred device for coal dust suppression via agglomeration. Having supplied over 90 pin mixers for this purpose, the profile highlights FEECO’s expertise in coal pin mixers. Click …
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 …