Rotary drum dryers have long been the preferred industrial dryer for processing sand in a variety of applications. Tolerant of variation in feedstock, highly reliable, and rugged, rotary dryers offer high-capacity sand drying at its finest for a variety of applications, including: ... FEECO Rotary Dryer (Drier) in field. Frac sand bucket ...
The challenges often vary on the specific material being processed, with some requiring additional preparation, and others, routine maintenance. Generally speaking, however, the most common challenges faced during rotary dryer processing include: Build-up. Knocking systems can be mounted to the drum's exterior to 'knock off' build-up ...
A FEECO rotary dryer awaiting shipment. In an indirectly heated unit, the drum is sealed off from the external environment. The surrounding shroud is heated, …
A burner mounted to a combustion chamber on a FEECO Rotary Dryer. Optimize the Feed Area. In a co-current dryer, where the material and products of combustion feed into the same end of the drum, it is essential to optimize the feed area. ... Choose a More Efficient Drum Size. A common practice in rotary dryer design is to oversize the drum ...
Single pass rotary dryers are used for a wide range of materials throughout many industries, offering a high level of opportunity to customize them to the specific challenges of the material at hand. Triple Pass Rotary Dryers. Triple pass rotary dryers consist of three lighter-duty drums of differing diameters nested inside each other.
Since 1951, FEECO has been designing and supplying custom rotary dryers and coolers for industries around the world. Whether you're look-ing for a single piece of equipment, or a complete system including the necessary exhaust gas handling and material handling equipment, we can offer you a customized solution, tailored to your processing needs.
FEECO has been a leader in the thermal processing industry since 1951, solving material problems through feasibility testing and manufacturing custom equipment, including rotary drum dryers. The Pulp & Paper …
While the choice between a rotary dryer and a fluid bed dryer may seem complex, ultimately, it comes down to material characteristics, spatial footprint, energy costs, and operational considerations, making each situation unique. FEECO custom engineers robust rotary dryers and fluid bed dryers to handle the specific needs of your material.
Warping (Rotary Drum Dryers & Rotary Kilns Only) Warp, or deflection, occurs when heat is unevenly distributed across the drum shell. If the temperature is allowed to go beyond the yield strength of the shell material, permanent deformation will occur. Warping can occur if a drum is run empty, or if a drum is run without rotation.
Material of Construction: direct dryers are primarily constructed of carbon steel, and indirect dryers are primarily constructed using a high temperature alloy. Industrial Use / Applications: Direct-fired rotary dryers are used more often than their indirect-fired counterparts, and are commonly seen in the agriculture and mining industries.
For rotary dryers, the following wear-critical parts should be kept on-hand to avoid excessive downtime: Flights. Trunnion wheels and bearings. Replacement thrust roller assemblies. Replacement pinion assemblies. Graphite Blocks. Replacement leaf seals and leaf seal plates. Flights in a frac sand dryer.
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The Co-Current Rotary Dryer. Best for: Materials that are heat-sensitive, maintaining product quality (NOTE: 90% of all rotary dryers are co-current for these reasons) Key Advantages: Greater control over solids temperature and avoidance of overheating. Disadvantages: Slightly less thermally efficient than counter-current air flow.
Rotary Dryer Design 101: Retention Time. This article was co-authored by: Retention time, also called residence time, is the amount of time that the material must be processed in the rotary dryer in order to achieve the desired results. The retention time required for a given application is determined through balancing the necessary process ...
3D FEECO Rotary Granulator (Granulation Drum) Ammoniated phosphates fertilizer (fertiliser) production (MAP, DAP, SSP, TSP) Specialty Fertilizers (Fertiliser) and Soil Amendments, Fertilizer & Soil Amendment Product Development. ... Rotary Dryers (Driers) in the Fertilizer (Fertiliser) Industry.
Product Details. Rotary dryers are a highly efficient industrial drying option for bulk solids. They are often chosen for their robust processing capabilities and their ability to produce …
Cold gap varies based on the type of drum. For applications where the drum shell does not exceed 250°F, the cold gap should be close to zero. Cold gap is the space between the tire's interior diameter and the outer diameter of the filler bars. This is measured at the top of the drum shell, as shown in the image above.
The floating tire mounting assembly is a significantly improved design over past mounting styles, offering a more maintenance-friendly approach that reduces stress and potential damage to both the rotary drum tire and shell, as well as other components. Existing drums are easily retrofitted with the floating tire mount with the help of an ...
What capacities can a drum dryer handle? Rotary dryers are capable of handling a wide range of throughput – typically anywhere from 1 TPH – …
Some information here may be specific to FEECO rotary dryers. Shell- the large, cylindrical structure made from a variety of materials including carbon steel, stainless steel, hastelloy and iconel. The shell can be customized in terms of thickness, or insulation, to meet the needs of the process. Combustion Chamber- this is where the actual ...
The performance of a rotary dryer is vital to maximizing process efficiency and capacity in any industrial process setting. While a well-designed dryer will yield few problems of its own, various factors can cause the performance of the overall drying operation to degrade. Process audits such as those offered by the FEECO Customer Service Team ...
The rotary dryer shell can be made from a variety of materials, including carbon steel, stainless steel, hastelloy, Inconel, and a variety of other alloys. The shell may also be customized in different ways, depending on the needs of the material and the process. For example, shell thickness can be adjusted for situations where heat retention ...
Contact our Customer Service Team for a quote on replacement tires or other rotary drum parts. "The build quality of FEECO's equipment is top notch, heavy duty, and has run with no issues in our continuous operating facility.". George Handler – Nestlé Purina. High-quality rotary drum tires (riding rings) for rotary dryers, coolers ...
FEECO is a leading manufacturer of highly engineered, custom rotary kilns for processing solids. Our high-temperature kilns have earned a reputation for their durability, efficiency, and longevity. Based on rotary drum …
Granulation drums work by tumbling material in a rotating drum, typically in the presence of a binder. The binder causes the fines to become tacky and allows them to pick up additional fines, forming agglomerates in a process referred to as coalescence. The tumbling action helps to round the agglomerates and create a homogeneous mixture.
A Comprehensive Guide to Rotary Dryer Alignment. This article was co-authored by: Maximizing the reliability and service life of a rotary dryer is the focus of many plant managers. One of the most important, but most overlooked aspects of rotary drum maintenance is ensuring proper alignment, or the positioning of the drum on its bases.
Whether you require low or high inlet temperatures, short or long residence times, counter current or co-current flow, FEECO's design team can design a rotary drum dryer for your application. Rotary dryers are a highly …
Knocking systems are physical enhancements placed on the exterior of a rotary dryer to counteract sticking inside of the drum. They are most commonly fitted on the inlet end of the dryer where material entering in is the most wet and tacky. Build-up can occasionally occur during the industrial drying process, and is caused by the material ...
What Causes Rotary Dryer Misalignment? Rotary dryer misalignment is oftentimes the result of improper base installation. Misalignment in the base will quickly spread through the rest of the drum, causing wear and damage to other drum components. In addition, misalignment can occur naturally over time as part of normal rotary drum wear and tear.
We've built a reputation on being the best rotary dryer manufacturer in the industry. All of our dryers are custom designed to suit the unique processing needs of your material. Whether you require low- or high-inlet temperatures, short or long residence times, counter-current or co-current …
Coating Drum Testing With Temp Gun. Direct-Fired Batch Kiln for Rotary Kiln Testing. Pellet Examination. Clumped Pellets. Dryer Flight Simulator Testing in the FEECO Innovation Center. Test Fluid Bed Dryer in the FEECO Innovation Center. Potash dryer testing in a rotary dryer. Thermocouples in a batch rotary kiln. Red mud samples taken …
Rotary dryers and fluid bed dryers have traditionally been the primary industrial drying systems used for processing frac sand, but the industry is increasingly in favor of the rotary type, in large part, due to this unavoidable variation. Fluid bed dryers are highly sensitive to variation in both particle size and moisture content.
Flange-Mounted Girth Gears. The flange-style mount consists of a gear with a machined flange and a flange welded to the drum shell. The gear is then bolted to the flange on the drum shell. The flange gear mount style is significantly more costly (nearly double) than the spring gear mount style, but it does offer a few advantages over the spring ...
As rotary drum experts since 1951, the FEECO Customer Service Team offers the industry's most reputable tire and trunnion wheel grinding services to recondition the load-bearing surfaces of your rotary drum. ... Rotary dryer diameter and length; Tire face width and diameter; Trunnion wheels diameter and face width (outside diameter for ...
Rotary Dryer Services: Preventive Maintenance. Preventive maintenance is the best approach to maximizing the service life of any rotary dryer while minimizing downtime and unnecessary maintenance costs. In addition to start-up and commissioning support, we offer the following services: Process & Equipment Audits. Routine & Annual Inspections.
Rotary dryers are often the preferred type of industrial dryer in this setting thanks to their high capacity, flexible design, and long-term reliability. FEECO has been manufacturing custom rotary dryers since 1951, giving us unmatched expertise in developing equipment that is optimized to product and process goals, as well as built for longevity.
Technical Writer. Rotary drums are widely used throughout industrial production facilities to accomplish a variety of objectives, including drying, cooling, granulation, coating, and more. While rotary drum equipment …