Though far less common than the need to dry or thermally treat a bulk solid material, some process settings call for preheating a material in preparation of downstream processing. In achieving this objective and meeting the high tonnages associated with bulk solids processing, rotary dryers …
The process of sizing a rotary dryer is one of precise engineering involving complex calculations and meticulous design. While the process is not well simplified into a few paragraphs, an explanation can be offered as to some of the concepts behind the process of rotary …
Rotary dryers offer a highly flexible solution to drying bulk solids ranging from specialty chemicals to minerals and ores. But with all this flexibility and opportunity for customization often comes confusion on what configuration will provide the most efficient solution for the job at hand. …
Drying is a critical aspect of mineral processing; throughout the journey from ore to end product, the ability to control moisture content helps to reduce shipping costs, streamline downstream processing, and produce a refined product. While mineral dryers may appear the same as other industrial …
Although it may seem like a good opportunity for cost savings, a one-size-fits-all approach to rotary dryer design typically yields a dryer that is ill-equipped, resulting in a number of unseen costs associated with product that is under-dried, over-dried, or in most cases, a mix …
This week’s photo, taken in the FEECO Fabrication facility, shows a FEECO employee using a laser shaft alignment tool to properly align the coupling on the shafts of a drive assembly. The coupling joins the shafts between the drive motor and reducer. The shafts are …
The best way to control material build-up in a rotary dryer is to prevent it in the first place. Custom Flight Design. Build-up can be prevented through the design of less aggressive flights, or material lifters. Material tends to build-up in sharp corners, and a …
Today’s photo highlights advancing flights in a rotary dryer. Advancing flights help to move, or advance material into a rotary dryer to prevent buildup near the wet feed discharge. Additionally, advancing flights give the material a chance to dry before they hit the next flights; …
Rotary dryers and kilns are an integral part of the many industrial processes that shape our world. From fertilizer and chemical production, to ore beneficiation and even consumer products, these rotary drums provide a reliable, high-capacity setting for accomplishing a number of necessary objectives when …
Some materials come with limitations that will steer the rotary dryer design process in one direction or another. For example, with materials that have the potential for combustion in certain settings, a direct fired dryer would not be the ideal option; an indirect dryer should …