Modern Cooling Conveyor Design For Continuous Bitumen And Asphalt Pelletization Process

Traditionally, bitumen has been transported in liquid form using insulated tankers or heated vessels. This method poses significant logistical challenges, high energy overheads, and a substantial carbon footprint, as the bitumen must be kept hot (often above 140°C) throughout its journey. Furthermore, repeated heating cycles degrade the physical properties of the bitumen through oxidation, reducing its performance in final road pavement applications.

As a result, the global industry is transitioning toward solidified bitumen pelletization. By converting molten bitumen into solid pellets at the production facility, suppliers can package, ship, and store the material at ambient temperatures. This eliminate the need for continuous heating, reduces transportation costs by allowing standard container shipping, and significantly lowers greenhouse gas emissions. Once at the destination, the pellets can be remelted locally or added directly to asphalt mixing plants.

Modern cooling conveyors designed specifically for bitumen must cope with the material's high stickiness and thermal inertia. Conventional cooling systems fail because asphalt adheres strongly to metallic surfaces when cooling down. Our state-of-the-art designs implement specific non-stick releasing agents, precise temperature control zones, and optimized scraper mechanisms to guarantee clean discharge without breaking the pellets or damaging the steel belt surface.