Siwertell’s unique sulfur-handling expertise
Siwertell is the only company that can provide safe, environment friendly, totally-enclosed sulfur unloaders and conveying systems. We offer sulfur unloaders with capacities up to 1,800t/h and our road-mobile units can discharge sulfur at up to 350t/h. Our sulfur loaders operate at rates up to 1,000t/h.
Sulfur: a hazardous, polluting bulk cargo
Sulfur is corrosive, polluting and hazardous with the potential to explode and cause fires. It is especially polluting when handled with machinery such as grab cranes and bucket elevators. Sulfur operations attract increasingly strict regulation to eliminate spillage and minimise dust emissions. Siwertell is the only manufacturer that addresses all these issues in sulfur handling.
Siwertell Sulfur Safety System (4S)
Handling sulfur in a totally-enclosed system is highly environment friendly, but it increases the risks of explosions and fires. Siwertell therefore developed its unique safety system, the 4S (Siwertell Sulfur Safety System). 4S minimizes the risk of explosions and safely contains them if they do occur. It reduces the risk of fires and detects and extinguishes them should they occur.
4S: how it works in bulk material handling
To prevent explosions and fires, 4S sprays water on the cargo at the inlet feeder and at conveyor transfer points. An automatic system lubricates and cools the end and intermediate bearings to reduce the risk of ignition.
Fire detectors are installed along the conveying line. They automatically start the water spray fire-extinguishing system and stop the conveyors to prevent a fire from spreading to storage areas. Extra thick steel casings can withstand a sulfur explosion, while venting valves relieve the resulting pressure. Stainless steel components minimize corrosion.
Transferable sulfur handling technology
4S technology has allowed Siwertell to develop clean, safe unloading systems for other hazardous materials including biomass and fertilizers.
A Siwertell ship unloader can discharge sulfur to a jetty conveyor for further transportation to storage areas, or directly into trucks or rail cars. The most common and efficient way, especially for rail-traveling, gantry-based unloaders, is to integrate the unloader in a complete conveying and storage system. The transfer point to the jetty conveyor is rendered dust-proof by a transfer trolley with an integrated dust-suppression system.
Direct discharge of bulk sulfur to trucks or rail cars by Siwertell road-mobile unloaders is carried out through specially-designed loading bellows, also fitted with an integrated dust-suppression system.