These rotary drums allow to dry or to cool the processed product (minerals, fertilizers, chemistry…).
Fitted with a specific internal shovelling and adapted to each material, GRELBEXⓇ rotary dryers can measure up to 30 meters length and 4.5 meters diameter (even 50 meters for lime kilns) made of steel, stainless steel or other specific material.
The cooler is a rotary drum smaller in dimensions (diameter 4.5 m, length 25 m) and runs with “direct or indirect” contact (coolant air or water, in contact or not with the product), and allows to cool the product before storage or before any other transformation process.