Refractory bricks are made of refractory ceramic materials. The use of these materials is not limited to building facades and fireplaces, but these materials are also used in furnaces and steel industries due to their resistance to heat of **** degrees Fahrenheit.
As we mentioned above, dense refractory bricks have many differences with ordinary bricks in terms of chemical composition.
Refractory bricks and ordinary bricks have differences in color, shape and thermal conductivity.
🧱 Temperature
Due to their chemical nature, refractory bricks show very good resistance to heat and temperature. These bricks are used for fireplaces, cooking rooms, wood stoves, fire boxes and various industries such as furnaces and steel industries. Takes. In addition to being heavy, refractory bricks have little porosity compared to ordinary bricks (they do not separate easily).
🧱 composition
Refractory bricks are composed of a chemical composition of 23% aluminum and 73% silica. Ferric oxide, titanium and other metal oxides make up the remaining ingredients of firebricks.
But the main composition of ordinary bricks is silica, alumina, magnesia, lime, iron oxide and alkaline materials, and if any of these ingredients are combined more or less than the specified amount, serious problems will arise for the structure of the bricks. The importance of the composition of materials in ordinary bricks is generally less than in refractory bricks.
🧱 color and shape
The color of firebrick is naturally white. But it is possible to make different colors in such a way that the stains are mixed inside the watery substance (slurry) so that the brick is colored during the manufacturing process; Some popular colors used for facades include espresso, moss green, red, and black. The shape of refractory bricks used in building facades is uniformly rectangular, while ordinary bricks may have different shapes. 🧱 thermal conductivity The thermal conductivity of ordinary bricks is much higher than refractory bricks. Firebricks can withstand high temperatures because materials such as ceramics, ferric oxide and other chemical additives do not absorb and transmit high temperatures. Low thermal conductivity makes firebricks a good option for wall insulation and provides more insulation than ordinary bricks. Due to high heat absorption and low thermal conductivity, refractory bricks have become a suitable option for places such as furnaces, cement industries, and steel industries. Being denser, more resistant to wear and damage are among the characteristics of refractory bricks.