Spiral Conveyor Dryers

A spiral conveyor dryers is a high-performance system designed for uniform drying of materials through controlled heat and airflow.

It operates by circulating heated air or energy through the material, ensuring even moisture evaporation and high throughput.

They provide faster drying, energy savings, and consistent product quality.

Industries such as food, chemical, and pharmaceutical widely use these dryers.

Yes, Kerone’s designs are fully customizable based on process requirements.

Yes, these dryers offer precise temperature control to protect sensitive products.

The system is designed to minimize energy waste and optimize heat utilization.

A central rotating cage drum or perimeter drive system provides the continuous drive force to the belt through friction or positive engagement, with the belt self-stacking on the spiral path and unwinding at the outlet.

Kerone designs CIP (clean-in-place) systems with spray nozzles at multiple tiers that deliver hot water and detergent solutions to the belt and enclosure surfaces; the entire spiral assembly can be cleaned without disassembly.

Yes, products with sauce or glaze coatings can be processed, but careful attention to belt selection and drainage design is required to prevent sauce dripping from upper tiers contaminating products on lower tiers.

A spiral conveyor dryer stacks its conveying path vertically in a helical configuration rather than laying it out horizontally, which means a long effective drying or cooling path — sometimes equivalent to dozens of meters of straight conveyor — fits within a footprint not much larger than the spiral's own diameter. This vertical stacking is what makes spiral systems attractive for facilities where floor space is constrained but a long residence time is still needed for proper drying or cooling. The tradeoff is that spiral systems require adequate ceiling height to accommodate the vertical stack, so buyers need to confirm their facility's vertical clearance before specifying a spiral configuration over a traditional horizontal tunnel.

Kerone's spiral conveyor systems use a slat-type belt design built around rolling friction rather than the sliding contact and wear-strips common in some conventional spiral conveyor designs. Sliding-contact systems generate more friction-related wear over time, requiring more frequent belt or wear-strip replacement and creating more opportunity for debris generation that could contaminate food or pharmaceutical products. The rolling-friction slat design reduces this wear mechanism, which extends belt service life and reduces the maintenance burden associated with keeping the conveyor mechanically sound across the thousands of operating hours a continuous production line accumulates. This is a meaningful differentiator in long-term operating cost versus simpler spiral conveyor designs.

Yes, spiral conveyor systems are versatile enough to handle granular materials like mineral powder, cement powder, fly ash, sand, and coal, as well as discrete solid items or finished packaged products, because the underlying conveying mechanism doesn't depend on the product being a specific shape or form. Some configurations can also support stirring, mixing, heating, and cooling operations simultaneously with conveying, which adds processing value beyond simple transport. This flexibility is part of why spiral conveyors have found broad adoption not just in food production lines but also in bulk material handling applications where vertical space efficiency and continuous movement between floor levels are valuable.

Food production facilities making baked goods and snack foods often need continuous drying or cooling paths long enough to bring product to a stable temperature or moisture level before packaging, but factory floor space for a straight tunnel of equivalent length is frequently unavailable or prohibitively expensive. The spiral configuration solves this by delivering the needed drying or cooling path length within a compact vertical footprint, while still maintaining continuous, hygienic processing without breaks in the line. Combined with food-grade construction and cleanable belt surfaces, this combination of space efficiency and hygienic design is precisely what makes spiral systems a preferred choice for high-throughput food manufacturing rather than a general-purpose drying solution.

A central rotating cage drum, or alternatively a perimeter drive system, provides the continuous driving force to the belt through friction or positive mechanical engagement, while the belt self-stacks along the spiral path as it's driven and unwinds again at the outlet end. This is a fundamentally different drive mechanism than a simple straight conveyor, where the belt forms a closed loop around two end rollers. The self-stacking behavior is what allows the long path length to be achieved within the compact spiral footprint, but it also means belt tension and tracking must be carefully engineered to prevent slippage or misalignment as the belt builds up through multiple tiers.