Shotcrete Applications

“Shotcrete” is a wet-method for the application of special monolithic
refractory materials.

Premixed, pumpable refractory castables are conveyed to the place of
application with special high pressure pumps (approx. 250 bar) over
distances until 80 m and more.

The castables are “sprayed” with compressed air through a special nozzle.
Simultanously an accelerator is added and mixed in the nozzle, which
guarantees the bond and stability of the applicated castables at their
installation places.

Comparing with conventional refractory casting castables, the “Shotcrete”
method achieves nearly the same physical values (density, strength).

For the application no complex formworks are necessary, which saves
precious time and costs.

"Shotcreting" – How does it work?

  • Powerful mixer
  • High pressure pump (double piston)
  • High pressure pipeline
  • Accelerator pump
  • "Shotcreting" – Equipment
  • Compressed air

"Shotcreting" – Advantages and Disadvantages

Method advantages

  • Shortest relining time
  • Low personnel need at high performance
  • Simple transport over long distances
  • Minimized formwork
  • No dust development at the installation place
  • Minimized rebound or other losses
  • Good adhesion on the underground
  • Fast heating up

Method disadvantages

  • Expensive equipment acquisition and maintenance
  • Only specifically modified, pumpable refractory castables can be used
  • The work can only be done in a workmanlike way by well-trained and experienced staff
  • The work is very hard for the nozzlemen
  • In case of disorders in the system (plugging of the – pipes) fast and experienced action is required

Where do we use "Shotcreting"?

  • Iron- and Steel Industry
  • Aluminium Industry
  • Cement / Lime Industry
  • Glass Industry
  • Waste Incineration Industry
  • Petrochemical Industry