polysius^® graphite seal: Improve the energy balance of your rotary kiln

Leak air at kiln inlet and outlet is no longer an issue

The polysius^® graphite seals for rotary kilns separate the kiln process from the environment. They are designed to seal off the kiln process from leak air while ensuring maximum process reliability and availability. No additional modifications of the kiln are necessary to retrofit the easy-to-assemble graphite seals – independent of the kiln manufacturer. This guarantees, besides a reduction of the energy costs, an extremely short amortization time.

Design and function of the graphite seal

The polysius^® graphite seal is the connecting link between rotating and stationary components. The sealing against rotating and axial movement is achieved by graphite blocks distributed around the circumference. When the kiln moves axially, the graphite blocks slide on the slide ring. When the kiln moves radially or wobbles, the tensioning ropes with counter weights press the graphite blocks onto the slide ring.

The air-cooled sealing casing minimizes thermal effects on the graphite blocks. The fastening system on the kiln inlet and outlet side enables the compensation of age-related wear – independent of the kiln manufacturer . Powdered material that gets into the seal area is discharged via a dust chute.

Service advantages of the polysius^® graphite seal

• Improves the stability of the clinker production process
• Mountable on the kiln inlet or kiln outlet section without modifications – independent of the kiln manufacturer
• High availability
• Low installation and maintenance costs
• Easy installation and short assembly time
• Rapid amortization
• Energy saving by reducing false air
• Reduced CO₂ emission