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Refractory Work

The term refractory work refers to refractory work procedure. Refractories are a vital component of industrial manufacturing and following the correct refractory work procedures are of great importance for quality results. The right procedure will lead to a safe, low maintenance and cost-effective protection from the heat and offer a lifetime of 10 years for units and equipment. The wrong refractory work procedure, on the other hand, will lead to unexpected downtimes, equipment failure, less than ideal production quality and even harmful accidents. Refractory work, in other words, is about doing the job “the right way”.

Refractory Work Procedures and Methods

We can say that there are 4 main refractory work procedures when it comes to installation of refractories. These are casting, pump casting, shotcrete, and gunite. Let’s take a look at each method.

  • Casting : This is the straightforward method of refractory installation. Wet castable is mixed and poured into forms until the castable in place is set, and then the form is removed. 
  • Pump Casting : In this method, the castable is pumped into where it is needed. Pneumatic trucks with hoses and pipes are used in this method. It is much quicker than the casting method and more efficient.
  • Gunite : This method uses a special dry monolithic refractory and applied with dry gun equipment. The dry gunite is pushed out through a hose with the help of compressed air. The mixture sticks to the surface because of the water added.

How to Choose the Right Method 

  • Shotcrete : Shotcrete is a special type of cement which is applied through a nozzle. The application is done manually and the water is added afterward to wet the material.

Determining which refractory work procedure will be used is based on issues such as location and site conditions, environmental factors, budget and the skill of the installation team. 

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