RPC Rotary Kiln Sealing System

The RPC sealing system uses prestressed packing ropes with sliding elements, providing a flexible sealing solution capable of accommodating kiln movement while maintaining continuous sealing contact. The design supports automatic adjustment, reduced wear, and simplified maintenance, making it suitable for a range of calcination and process applications.

Product Description

Reliable Sealing for High-Temperature Rotary Kiln Operations

The RPC Rotary Kiln Sealing System is designed to provide reliable sealing performance in demanding industrial kiln environments. By maintaining continuous contact between the kiln shell and sealing elements, the RPC system helps prevent false air infiltration and process media losses, improving overall process stability and energy efficiency.

Using prestressed packing ropes with sliding elements and spring-supported self-adjusting sealing components, the RPC system accommodates kiln movement while maintaining consistent sealing performance.

The design is suitable for both new installations and retrofit upgrades, providing a dependable sealing solution for a wide range of thermal processing applications.

How the RPC Rotary Kiln Seal Works

The RPC sealing system uses two packing ropes with sliding elements housed within a protective structure. These ropes are prestressed to maintain continuous contact between the sealing elements and the rotating kiln tube.
Guide plates ensure optimal positioning and compensate for radial kiln movements. A spring system absorbs frictional forces and maintains the required sealing pressure.
A self-adjusting tension unit provides automatic compensation for wear and serves as a visual wear indicator for maintenance monitoring.
Optional dust discharge systems allow removal of process residues from the sealing area, helping maintain consistent sealing performance.

Advantages
  • Low maintenance due to automatic adjustment
  • Smooth compensation of radial and axial runouts
  • Reliable prevention of false air suction and media blowout
  • Reduction of energy costs and media losses
  • Increased process efficiency
  • Long maintenance intervals
  • Retrofit capability for existing kilns
Features
  • Packing ropes with sliding elements guided in a housing
  • Prestressed ropes ensure continuous contact with kiln tube
  • Self-adjusting sealing elements with spring system
  • Guide plates for optimal positioning and radial movement compensation
  • Tension unit serves as wear indicator
  • Optional dust discharge system
  • Freely selectable size
Materials (metal parts)

Key components of the RPC sealing system are designed to withstand high temperatures and abrasive process environments.

  • Body cover: Stainless steel
  • Guide plates: Bronze
  • Packing: Braided cord with PTFE impregnation (asbestos-free)
  • Thrust plate: Stainless steel
  • Housing: Stainless steel

Technical Specifications

Operating Range
  • Diameter: 1000–8000 mm
  • Maximum process temperature: 1100 °C (2012 °F)
  • Rotational speed: max. 2 m/s
  • Radial movement capability: 35 mm
  • Axial movement capability: 300 mm

Other operating ranges are available on request.

Recommended Applications
  • Kaolin calcination
  • Titanium dioxide calcination
  • Gypsum processing
  • Chemical industry processes
  • Building materials production