How thick are refractory bricks?
Refractory Lining
Refractory lining is basically a protective layer installed inside the furnace to protect the steel structure from high temperatures. Refractory bricks or monolithic refractories can be used for refractory lining. This selection is determined by the indented heat levels of the furnace and/or the chemical structure of the material being processed inside. Refractory lining is one of the most important things to look for during the installation. A professionally placed lining will increase the lifetime of the furnace and lower the energy costs. In general, refractory lining thickness is in between 80 mm and 300 mm. However, the thickness should be determined for each project differently.
The Shape of the Refractory Lining
Most refractory lining systems are constructed of fire bricks. Monolithic castable refractories are also used for this job, but the fire bricks are the cheaper and easier solution. The brick shape of the refractory lining varies according to the intended use of the furnace. For example, the most commonly used shape is the arch roof. Domes and cylinder geometries are similarly preferred too. Refractory lining is exposed to high temperatures for a long time. This results in complicated stress environments within the lining structure. For this reason, a periodic structural investigation is needed for all types of refractory linings to prevent high repair costs and to ensure continuous production.
