Screw coke preheater

KOELLEMANN screw coke preheaters are engineered to efficiently heat petroleum coke – a nearly pure carbon by-product of petroleum refining -from ambient temperature (≈0°C) up to approximately 200°C.
After heating, the petroleum coke is mixed with hot pitch in a kneader to form a paste, which is pressed into blocks and baked to produce anodes used in the Hall-Héroult aluminium electrolysis process.

KOELLEMANN’s advanced design delivers major advantages in performance, durability, maintenance, and overall footprint.

Key Features of our Screw Coke Preheater

ensures maximum heat transfer efficiency in the smallest possible space.

with quick-removal panels reduces maintenance time while minimizing heat radiation losses for optimal thermal efficiency.

absorbs thermal expansion of the screw shafts, significantly reducing wear and maintenance.

allow individual screw shafts to be replaced without removing end walls or neighboring shafts—greatly reducing downtime.

enables installation on a single solid frame without the need for individual foundations.