Screw coke preheater
KOELLEMANN screw coke preheaters are used to heat up petroleum coke. Petroleum coke is a residue formed as a by-product of petroleum refining and is made of almost pure carbon. KOELLEMANN screw coke preheaters perform the heating process and heat the product from at least 0°C to approx. 200°C.
The heated petroleum coke is then mixed with hot pitch in a kneader. The paste formed is then pressed into a block shape. These blocks are then baked and represent the anode, which is used in the Hall-Héroult process (electrolysis) for the reduction of aluminium.
KOELLEMANN screw coke preheater design offers decisive advantages for maintenance, life, efficiency and required space.