Allows for cleaner and more efficient operation

Simple to install on existing roof port designs

Proven effective in the most extreme conditions

Well-aligned with modern industry objectives

Challenges

Faced with economic uncertainties, companies need to maximize efficiencies in their operations in every way possible–optimized engineering designs streamline processes, improve production outcomes, and increase the long-term viability of equipment and facilities. And, as the world grapples with the impacts of climate change, there is increased pressure globally to reduce carbon emissions and incorporate more sustainable designs.

Furnaces must operate consistently and safely in some of the most extreme and severe conditions. To ensure that their operations are both profitable and more sustainable, companies need innovative solutions to reduce gas and dust emissions, improve energy recovery, and reduce equipment downtime and maintenance.

Our electrode seal is based on our patented Sleeve Seal technology, which provides an exceptional gas seal for a wide range of high-temperature applications. It provides a low-pressure seal simultaneously capable of significant deformation and improved wear resistance. This highly flexible and robust sealing arrangement may be applied to many areas where furnace sealing is required; however, it is particularly well suited to seal the electrode column of an electric arc furnace.

Solutions

  • Our electrode seal is engineered to be highly durable and remain flexible while exposed to harsh furnace freeboard conditions to improve gas sealing, off-gas quality, and recovery, as well as to reduce equipment downtime.
  • The unique reactive tensioning system and exceptional flexibility of the technology ensures a sufficient gas seal is maintained regardless of the position or condition of the sealing surface.
  • For open furnaces, the design helps to contain fumes, reduce damage to vulnerable equipment caused by over-pressure events, and generally improve working conditions on the roof.
  • For closed furnaces, the additional process advantages are significant. Not only does it allow for improved control over the furnace atmosphere, but it also allows for improved off-gas quality and recovery—a highly valuable process particularly when valuable off-gas elements, such as CO or SO2, are recovered.
  • For carbon monoxide-rich off-gas, the seal reduces the amount of carbon monoxide that would otherwise naturally convert to carbon dioxide. Instead, it can be captured and reused as fuel, further increasing efficiency and reducing emissions. This makes the furnace more sustainable, more profitable, and therefore better positioned in the industry.

 

Benefits

  • Improved sealing—reduced gas and dust emission, as well as reduced air ingress often critical for closed furnaces
  • Improved energy recovery from off-gas
  • Reduced equipment damage and downtime
  • Improved seal campaign life
  • Simple installation, maintenance, and replacement of consumables
  • Exceptional sealing range to accommodate component movement
  • The self-supporting sealing element can allow for electrode removal
  • Low and ultra-low profile designs available
  • Does not require water or air cooling

 

Furnace Electrode Seal
Furnace Electrode Seal
Furnace Electrode Seal

Furnace Electrode Seal

Furnace Electrode Seal

Furnace Electrode Seal

Furnace Electrode Seal

Furnace Electrode Seals

Furnace Electrode Seals

Technical Papers

Hearth temperature control at USS blast furnace

Author(s) Entwistle, J. Grindey, J. Albanese, R. Lee, D. Rogers, B. McCoy, M. Cameron, Ian Sukhram, Mitren Bodley, Michael Midha, Rishi Al-Dojayli, Maher Chomyn, Kyle Ghobara, Yasser Towsey, Paul
Proceedings of the Iron & Steel Technology Conference 6–9 May 2019, Pittsburgh, Pa., USA
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