Has Your Car-Bottom Furnace Refractory Seen Better Days?

Has Your Car-Bottom Furnace Refractory Seen Better Days?, Precast Refractory Shape Systems, TFL Houston

The refractory linings of car-bottom furnace cars present an ideal opportunity for the use of precast refractory shape systems. Many of our heat-treating customers have chosen this new approach over the “old ways” of refractory maintenance. Here’s why:

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The Old Way

Precast Shape System

Installation:

  • Demolition  
  • Anchoring  
  • Set Forms
  • Set up for mixing operation
  • Mix and Cast Refractory (multiple pours
  • likely)
  • Curing Time
  • Strip Forms

Installation:

  • Demolition
  • Install Shapes

Bake-Out

  • Minimum 30-40 hours of initial heat-up time
  • Cool-down time

Bake-Out

  • Shapes are pre-fired, ready for service

Other Advantages

  • Installation logistics greatly simplified
  • Crew size minimized
  • Installation becomes a “mechanical” job, not a specialized refractory job
  • Replacement parts can be kept on hand
  • Future repairs can be easily isolated
  • Water, mix time controlled in manufacturing
  • Independent curb shapes can isolate damage from the rest of car bottom

Pro Tip: Physical properties of the castable are optimized with TFL refractory shapes.

Has Your Car-Bottom Furnace Refractory Seen Better Days?, Precast Refractory Shape Systems, TFL HoustonHas Your Car-Bottom Furnace Refractory Seen Better Days?, Precast Refractory Shape Systems, TFL Houston

Conclusion

Precast shapes for car-bottom furnace refractory linings are easier to install and provide vastly improved performance over cast-in-place refractories. We can also manufacture these shapes with a specially formulated fused-silica castable that is specifically designed to resist damage from thermal cycling- a common source of problems in car bottom furnaces.

Want to learn more about the advantages of precast refractory shapes from TFL? Contact us today!