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Featured premium crystallization systems engineered for chemical, bitumen, and specialty wax granulation.
A transformative shift in high-efficiency storage, decarbonized maritime transport, and precise chemical batching.
For decades, the global asphalt industry was bound by the economic and energetic burdens of liquid bulk shipping. Maintaining bitumen at pumping temperatures between 140°C and 180°C throughout intercontinental transit requires continuous thermal heating, generating heavy carbon emissions, safety hazards, and product oxidation.
The introduction of European Standard Steel Belt Coolers has established a revolutionary industrial standard. By transforming molten bitumen and modified asphalt binders into uniform, free-flowing, dust-free pastilles (hemispherical granules of 3–8mm), petrochemical refiners and construction chemical producers achieve zero thermal degradation, eliminate expensive heated storage tanks, and cut long-distance freight costs by more than 40% using standard shipping containers or 25kg/1-ton bulk bags.
Combining precision rotary dropformers, controlled thermal cooling zones, and anti-adhesive surface technologies.
The specialized heated pastillator head features a coaxial internal stator and rotating perforated shell. Precise mechanical synchronization deposits molten bitumen droplets at uniform pitch without stringing, tailing, or splashing across belt speeds up to 35 m/min.
Underneath the high-tensile steel belt, water spray nozzles distribute recirculated cooling water in zoned temperature gradients. This counter-current indirect heat exchange cools bitumen from 180°C to below 40°C while preventing thermal stress and micro-cracking.
Bitumen's natural tackiness is neutralized through a micronized silicone-free anti-sticking release agent atomization mist applied to the belt surface prior to deposition, ensuring instant, clean mechanical release at the discharge end knife.
Customized thermodynamic continuous cooling solutions tailored to diverse asphalt polymer compositions.
SBS, EVA, and crumb rubber enriched bitumen binders require tight temperature control during cooling to prevent polymer phase inversion. Steel belt pastillators rapidly freeze the internal microstructure, preserving elasticity and PG grade stability for high-stress highway surfacing.
High softening-point oxidized grades (e.g., 85/25, 90/40, 115/15) utilized in waterproofing membranes, pipe enamel coatings, and acoustic insulation dampening are solidified into dustless pellets, eliminating manual block chopping and reducing fumes during hot melting.
High-viscosity hard bitumen and asphaltite concentrates are processed continuously with high-pressure rotary feed bars, creating uniform additives easily dosed directly into asphalt plant pugmills without pre-heating logistics.
Rigorous comparative assessment across operational efficiency, environmental footprint, and pellet consistency.
| Performance Metrics | European Standard Steel Belt Cooler | Traditional Drum Flakers / Slab Coolers | Water-Submerged Underwater Pelletizers |
|---|---|---|---|
| Particle Shape & Integrity | Uniform Hemispherical Pastilles (3–8mm) | Irregular, fragile flaked shards | Porous, irregular wet granules |
| Direct Product-Water Contact | Zero Contact (100% Indirect Cooling) | Partial / High Risk of Contamination | Direct Water Contact (Requires Drying) |
| Dust Generation & Fines | < 0.2% (Practically Dust-Free) | High (> 5% abrasive fines) | Moderate (Debris in water loop) |
| Thermal Efficiency & Yield | High (Continuous Conductive Transfer) | Low (Air/Drum boundary thermal loss) | High energy consumed in drying stage |
| Maintenance & Belt Lifespan | > 10 Years Fatigue-Resistant Belts | Frequent scraper wear & rust issues | High blade wear & clogging nozzles |
Decades of continuous engineering evolution and international industrial pastillation excellence.
For many years, Raidsant has marched forward with head held high, viewing honours as both an incentive and a driving force.
In the eyes of Raidsant's people, yesterday's accolades have become history. Moving forward, the most significant honour lies in our clients' continued affirmation of Raidsant.
Comprehensive solid cooling and granulating equipment engineered for chemicals, polymers, waxes, and bitumen.
