drum dryer coating

drum dryer, coating machine

drum dryer, coating machine

This cooler used for the production of compound fertilizer, cool fertilizer with certain temperature and particle size. Use dryer together can greatly improve the cooling rate, reduce labor intensity and improve the quality, further remove moisture, reduc

coating drums

coating drums

Coating drums are used in a variety of industries to perform particle coating applications in order to improve product characteristics. FEECO offers custom coating drums both as a single piece of equipment and as part of a complete agglomeration or granulation process.

All FEECO equipment and process systems can be outfitted with the latest in automation controls from Rockwell Automation. The unique combination of proprietary Rockwell Automation controls and software, combined with our extensive experience in process design and enhancements with hundreds of materials provides an unparalleled experience for customers seeking innovative process solutions and equipment.Learn more >>

All FEECO equipment and process systems can be outfitted with the latest in automation controls from Rockwell Automation. The unique combination of proprietary Rockwell Automation controls and software, combined with our extensive experience in process design and enhancements with hundreds of materials provides an unparalleled experience for customers seeking innovative process solutions and equipment.

FEECO Coating DrumFEECO Coating DrumFEECO Fertilizer (Fertiliser) Coating DrumCoating Drum Interior Shown During Coating TestCoated Urea Fertilizer (Fertiliser)Coating Drum Interior Shown During Coating TestCoating DrumCoating Drum Interior Shown During Coating TestResource of the Week: Coating Drum for Ammonium Sulfate (Sulphate)Coating Drum Diagram with labelled componentsCoating Drum Diagram with labelled componentsReplacement Rotary Drum BearingsReplacement Rotary Drum ShellRotary Drum Laser Alignment Process, Rotary Drum AlignmentRotary Drum Alignment, MisalignmentWhy Post Maintenance Alignment is Critical to Rotary DrumsCauses of Tire (Tyre) and Trunnion Wear, Rotary Drum TireFEECO Tire (Tyre) Grinding Machine, Tire and Trunnion Grinding in ProgressRotary Drum Tire (Tyre) Wear Pattern from Excessive Wheel Skewing, Rotary Drum Tire in Need of Tire GrindingRotary Drum Tire (Tyre) Wear Pattern from Poor Housekeeping Practices, Rotary Drum Tire in Need of Tire GrindingRotary Drum Tire (Tyre) Wear Pattern from Misalignment, Rotary Drum Tire in Need of Tire GrindingRotary Drum Tire (Tyre) Wear Pattern from Using Improper Tire Lubricant, Rotary Drum Tire in Need of Tire GrindingTire (Tyre) and Trunnion Wheel GrindingTire (Tyre) and Trunnion Grinding Replacement Rotary Drum PartsCoated UreaRotary Drum Thrust RollersRotary Drum Trunnion Wheels (Rollers)Rotary Drum Riding Ring (Tire/Tyre)Resource of the Week: Girth Gears PageRotary Drum LinersImage Showing How Coating Accuracy Changes When a Change in Flow Rate Occurs With a Belt Conveyor Coating ApproachCoating diagram showing how uniformity coating is achieved in a coating drum, coating distribution in a coating drumImage showing uneven coating distribution that occurs with a coating conveyor approachCoated urea fertilizer (fertiliser) before and after coating in a coating drumFEECO Fertilizer (Fertiliser) Coating DrumRotary Drum Drive BaseResource of the Week: Unitized Drive Base BrochureResource of the Week: Ammonium Sulfate (Sulphate) Fertilizer (Fertiliser) Coating Drum Project ProfileEncapsulated Seed ProductAgglomerate Coating Drum Test in the FEECO Innovation Center3D Model of a FEECO Coating DrumDifferences Between FEECO Drive AssembliesRotary Drum Tire (Tyre) Damage, Drum Tire in Need of Tire GrindingRotary Drum Tire (Tyre) and Trunnion Wheel Grinding/ResurfacingRotary Drum Tire (Tyre) and Trunnion Wheel Wear, Drum Tire in Need of Tire GrindingDamaged Rotary Drum Tire (Tyre), Drum Tire in Need of Tire GrindingCoating Drum for Roofing GranulesSimplified Process Flow Diagram (PFD) for Producing Roofing Granule Production including rock dryer, pre-heater, coloring drum, rotary kiln, and coolerRotary Drums for Roofing Granule ProductionAmmonium Sulfate (Sulphate) Fertilizer (Fertiliser) Coating Drum InteriorAmmonium Sulfate (Sulphate) Fertilizer (Fertiliser) Coating Drum ExteriorCoating DrumsCoating DrumsFEECO Coating Drum3D Model of Trunnion Wheels with Thrust RollerWhy Coat AgglomeratesCoating Drum in operationView All >

The advantage to working with FEECO is that we are experts in agglomeration. We can work with you to develop a process that produces a product with the particle characteristics youre looking for. From initial feasibility testing, to process development, manufacturing a commercial scale coating drum, and even servicing it, FEECO has all your process and equipment needs covered.

drum coating-glatt integrated process solutions

drum coating-glatt integrated process solutions

Drum coating is the oldest method for coating and refining pharmaceutical substances. It is particularly suited for encasing large, non-fluidizable particles such as tablets, capsules or very large pellets.

Whether your product needs to be protected from environmental influences, you need to color-code your tablets, visually improve them or want to modify the release of the active substance in a specific way, or whether you want to mask an unpleasant taste or make it easier to take your product: With this method, very different requirements can be met. However you prefer it.

The aspects mentioned under "Fluidized bed coating" largely apply to this process as well. There are only a few differences in the way the film coating material is applied. The spray equipment and a homogeneous, thorough mixing through gentle, controlled movement of the product are decisive for achieving the most even distribution of the coating material possible. The time-proven solution for refining your tablets, capsules and pellets.

Sugar coating means encasing a core in a sugary substance. This method is primarily used in the food processing industry. However, the pharmaceutical industry also still sugar-coats some tablets to mask the taste or improve the shelf life of a product, depending on the specific requirements.

For sugar coating we use pan coaters that are also used for film coating. A highly concentrated sugar solution, which gradually coats the product cores, is fed using a distribution rake. Feeding is periodically interrupted to allow the sugar mass to be further distributed by friction and to dry. After drying, new solution is added. The process is repeated until a stable layer of the desired thickness has formed around the core. Therefore, processing times with this method are rather long. The classic solution for coating and refining your products.

In contrast to sugar coating, the product core is coated with a continuous thin layer in film coating. The advantage of this process variant is the comparatively short processing time. For a higher processing efficiency.

Film coating is as effective as fluidized bed coating because, here too, large volumes of processing air are available. And the mixing baffles assist in ensuring an optimal mixing of the tablets or capsules to be varnished. V-jets ensure the even application of the film coating material onto the product bed.

photo of the week: coating drum in operation

photo of the week: coating drum in operation

This weeks photo of the week shows the inside of a coating drum while in operation at the FEECO lab facility. Coating pellets is desirable for many reasons, including to control dust, caking, or moisture absorption, or to improve flowability of a material. Coatings are also used in products such as fertilizers, where a controlled release of ingredients is required. Additionally, coatings can help preserve the integrity of a pellet product.

As can be seen in the photo, pre-made pellets are fed into one end of the rotating drum, and the coating material is sprayed onto the bed of pellets (not shown in image). As the drum rotates, the pellets pick up the coating, and the rolling action helps to agglomerate the coating onto the exterior of the pellets.

Using our state-of-the-art lab testing facility, FEECO can custom engineer a coating drum to suit the needs of your material. For more information on our agglomeration capabilities or our lab testing facility, contact us today!

roll coating for paper reel drums, dryer cylinders, calenders

roll coating for paper reel drums, dryer cylinders, calenders

Tungsten carbide coatings became an industry standard to protect hard nip machine calender, soft nip calender and super-calender paper machine rolls, as well as coat rolls, doctor blades and dryer drums from wear. The proper choice of a roll coating is a key factor in improving sheet release, reducing draw, improving dewatering performance, ensuring consistent coating and sizing, and excellent calendering results.

Ultra-quality ductile 1,600+ HV300 Kermetico HVAF WC-10Co-4Cr thermal spray coatings provide a new level of wear resistance resulting in consistent paper quality, lower regrind and change-out costs and longer overall paper roll life.

Moreover, the low combustion spraying temperature (1,960-2,010C | 3,560-3,650F depending on fuel gas) and gentle particle heating lead to minimal feedstock phase transformation and almost nonexistent elemental depletion or decomposition of the in-flight particles.

Furthermore, the replacement of pure oxygen in the HVOF process with air in the Kermetico HVAF process significantly reduces the oxide content in the coatings, which is desirable for high-performance coatings.

In a paper dryer section, multiple drying cylinders heat the moving paper sheet to evaporate water. Steam heats the drying cylinder shell from the inside. The cylinder surfaces are kept clean using oscillating doctors.

The surface of the drying cylinder can deteriorate due to wear and corrosion, leaving marks and other defects on the paper sheet. The paper can also stick to the cylinder surface, causing the paper to break and wrap around the cylinder.

A traditional approach to providing the necessary resistance to wear and corrosion, as well as release (anti-sticking) properties for the drying cylinder surface, was an application of a hard chrome coating with up to 20% PTFE (Teflon-type). However, doctoring results in the rather quick loss of the Teflon-type treatment and wear of the chrome coating.

HVOF spraying of the WC-10Co4Cr inner coating layer and air spraying of the Teflon-type layer is a popular alternative. During operation of the dryer section, the coating is polished by the paper sheet to the necessary roughness due to the removal of the top Teflon-type layer down to the peaks of the WC-coating.

A major problem is non-uniform wear of the coating due to doctoring and the known HVOF technology restrictions for processing high-quality WC-coatings. The application of HVOF WC-coatings is the most time consuming, resulting in a high cost of the coating.

Fluorinated Ethylene-Propylene (FEP) possesses about the same anti-sticking properties and corrosion resistance as Teflon at a temperature up to 200C (392F). However, contrary to Teflon-type materials, the FEP coating has good adhesion to the WC-CoCr coating. Its baking procedure is shorter and requires a lower heating temperature (120C 248F), ensuring better control of the properties and a further reduction of application time.

Winder (Reel) drums operate in pairs at the dry-end of a paper machine. The paper is wound around the first drum under controlled tension through differential surface velocities of the drums, the second drum having a slightly higher surface velocity than the first.

Depending on the paper type, winding speed, winding set up among other parameters, slipping may occur between the paper and the drums.Thus, the required tension is not achieved in the finished paper roll, resulting in the formation of several layers of an out-of-round paper roll. On the later stage in the re-winder (Slitter) section, this final portion of paper (usually, up to 5% of the paper machine production) cannot be re-wound and is scraped.

A traditional approach adopted to prevent the mentioned slipping is to coat the rolls with a coarse tungsten carbide composite coating. Low-velocity combustion flame spraying has been traditionally used due to this work most often being conducted on site. These coatings have been successful regarding stopping slipping, but problems regarding the initial operation, as well as long-term life, have been experienced.

These traditional tungsten carbide coatings consist of large WC powder particles (50-100 microns), bound together by a metal matrix (Cobalt or Cobalt-Chrome). Large particles tend to damage the paper initially when the drum is first operated. Furthermore, the particles are easily plucked from the metal matrix during normal operation. Thus, the coating suffers steadily decreasing performance with time until the coating needs to be stripped and replaced.

In our process, the grain size of tungsten carbide is reduced down to about 1 micron using agglomerated and sintered WC-10Co4Cr powder, providing high binding of WC-grains in the metallic matrix. Thus, the paper is not damaged by coarse grains of carbide.

Kermetico HVAF equipment is portable, providing the required possibility of applying coatings on-site. This is the equipment of the highest productivity (up to 30 kg per hour spray rate with 55-65% deposit efficiency), ensuring the quickest possible application.

Then we accelerate the particles to an optimized high velocity, and when the particles impact the substrate, there is a rapid conversion of kinetic to thermal energy that allows for the plastic deformation of the particle and a bond which we cannot accurately measure.

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