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Fire Insulating Bricks And Its Functions

Views: 274 Author: Western Coast Publish Time: 2020-02-03 Origin: Site

Fire insulating bricks are the type of refractory fire bricks that are used in the making of insulation for kilns and ovens. The insulation bricks manufacturers have made these bricks lightweight and soft that can be cut with the help of a handheld hack saw, drill bit, or a masonry chisel. The color of insulating fire bricks varies from white to light brown due to its ingredient of clay. In general, insulation is carried out by the formation of air pockets within the insulating medium. As a result, the fire insulating bricks build the insulating effect by enclosing several small spaces for the residence of air.

refractory fire bricks

Just like the standard thick firebrick, insulating fire brick for sale is manufactured with a similar fire clay that can withstand extremely high temperatures. However, these bricks do not possess good heat retention characteristics and therefore cannot work in a similar way as the regular fire bricks. When the fire insulating bricks are placed in the oven as the vault or hearth wall, the oven will not work adequately. Moreover, the heat produced by the fire won’t be radiated back or absorbed in the oven.

Functions of fire insulating bricks

The key function of fire insulating bricks is thermal insulation and reduction in heat loss. These thermal insulating bricks do not directly touch fire whereas the refractory fire bricks can directly touch fire. The main difference between fire insulating bricks and refractory fire bricks as per their function is listed below.

1. Thermal insulation property

Insulating fire brick for sale can conduct heat at an average temperature of 350+25 degrees Celsius. Whereas the refractory fire brick can conduct heat above that temperature. Therefore, the thermal insulating property of thermal insulation bricks is far better than the refractory fire brick.

2. Density

Fire insulating brick is a lightweight insulation material and its density lies between 0.8-1.0g/m3  whereas refractory fire brick has a density above 2.0g/m3. It means the density of insulating fire bricks is less as compared to refractory fire bricks.

3. Refractoriness

Refractoriness of fire insulating brick is less than 1400 degrees Celsius, while refractory fire brick has refractoriness above 1400 degrees Celsius.

Advantages of thermal insulating bricks

Fire insulating bricks are highly efficient, low-carbon, environment-friendly, and energy-saving bricks that are manufactured as per the ASTM standard. These bricks are considered the best insulation materials in different industries such as Metallurgy, Ceramics, Glass, Power, Aluminum, and Petrochemical. Let’s have a look at their advantages.

· Low heat storage

These bricks store little heat when they absorb more heat, thus provides energy efficiency.

· High crushing power

The crushing strength of fire insulating bricks is high under the thermal phase, volume stability.

· High purity

These bricks have a low content of alkaline, metal, and iron impurities. It means the insulating fire bricks have high purity.

· Correct dimension

Insulating fire bricks have accurate dimensions by machining, grinding, and cutting special shapes that expedite bricklaying.


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