When handling bulk materials in demanding environments—especially those that are abrasive, corrosive, or volatile, chain conveyor (drag conveyor, Redler), is often the best solution. However, its performance and lifespan depend entirely on how well it is adapted to the specific properties of the material it will transport. And that adaptation begins with detailed material testing.
Robust and reliable design
Chain conveyors are commonly used where durability, sealing, and controlled flow are essential. This includes industries handling mineral products, fertilizers, or alternative fuels. For such applications, a one-size-fits-all design is not only inefficient but can result in severe equipment degradation and safety risks.
To avoid these issues, it’s vital to begin with a technical study of the bulk material’s behavior. The main properties to analyze are:
- Bulk density
- Particle size and shape
- Flowability and angle of repose
- Moisture content
- Abrasiveness and hardness
- Working temperature
Each of these factors influences chain wear, casing protection, material buildup, and overall performance of the conveyor system.
Testing for data-driven engineering
At Sinfimasa, our engineering approach is grounded in real data. Laboratory characterization and pilot plant trials are conducted to anticipate how the material will behave during transport. Tests include:
- Particle size distribution
- Cohesion and flow resistance
- Abrasiveness and wear potential
- Angle of repose and discharge patterns
- Moisture impact on flow and adhesion
Challenging materials
Chain conveyors offer fully enclosed, low-dust transport with strong resistance to wear and corrosion—when they’re properly engineered for the product. Key design components:
- Chain type and coating
- Trough geometry and sealing
- Self-cleaning systems and guides
- Damping systems for vibration and impact
Custom design is critical for:
- Abrasive materials like minerals or clinker, requiring reinforced chains, anti-wear linings, and robust casing
- Corrosive materials such as chemical fertilizers, needing stainless steel structures, sealed joints, and corrosion-resistant chains
- Volatile or low-density products (RDF, biomass), which benefit from precise flow control, enclosure, and systems to avoid product loss or dust emissions
Benefits of a custom-built chain conveyor:
- Extended operational life
- Fewer breakdowns or maintenance interventions
- Safer handling of hazardous or volatile materials
- High efficiency and low energy consumption
Conclusion
A standard chain conveyor may seem sufficient at first glance, but in complex industrial settings, only a custom-designed system—engineered with accurate product data—can deliver reliability and performance over the long term. At Sinfimasa, we start every project with material testing to guarantee that your chain conveyor is as robust and efficient as your process demands.
