Spiral elevators convey bulk material upwards to accommodate with space constraints and production line arrangement, but they are also used to process the product during the conveying.
Holes can be incorporated into the spiral tower to force air out and across the product, and jacketed flights can provide indirect heat transfer with steam, oil or water.
Carrier spiral elevators are available in large sizes (more than 3m diameter and 15m height), for light or heavy duty, high temperature, sanitary design, and can be enclosed to protect the product environment or provide operator safety.
Retention time can be adjustable to control even further the finished product conditions.
Spiral elevators are typically used for the processing of rubbers, plastics and other polymers, as well as in the food and pharmaceutical industries.