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What are the main applications of insulating fire brick?

Views: 0     Author: Site Editor     Publish Time: 2021-10-01      Origin: Site

There are many types of insulating fire bricks. When choosing insulating fire bricks in industrial kilns, it is necessary to choose the appropriate ones according to the actual use temperature inside the kiln, the use conditions of insulating fire bricks, the use cycle and other aspects. This article will introduce the main applications of insulating fire bricks.


Here is the content list:

  • Features

  • Insulating fire brick application industry

  • The use of insulating fire brick


To understand the main applications of insulating fire brick, it is important to understand its characteristics first.

Insulating Fire Brick

  1. Insulating fire brick belongs to A1 class fireproof material, has good fire resistance, fireproof degree of 1000℃ or more, fully meet the requirements of fire isolation belt.

  2. Insulating fire brick plate closed cell rate 95%, high closed cell rate to reduce convection heat transfer, is a prerequisite for high heat insulation.

  3. The thermal conductivity of the special fire belt plate is basically the same as that of the polystyrene board, which can meet the needs of building thermal insulation.

  4. The dry density is generally 150m3/kg, the thermal conductivity is 0.045W/(m.K), and the compressive strength is 0.4MPa. Insulating fire brick at high temperature will not burn and do not release toxic gas, belongs to the safety, environmental protection building materials.

  5. The insulating fire bricks have a service life of more than 50 years, keeping pace with the life of the building. As a result of foam insulation brick special board belongs to silicate material, so water resistance is very superior. Because the material is porous material and mortar, wall is homogeneous, so the interface is very good, the construction process is not like organic or rock wool insulation materials like those need anchorage, directly paste can be.

  6. Insulating fire bricks have poor mechanical strength, wear resistance and slag erosion resistance, so they are not suitable for bearing structure of furnaces and direct contact with slag, charge and molten gold.


The use of insulating fire brick

  1. Working layer of various industrial furnaces, such as carbonization furnaces, cracking furnaces, tunnel kilns, industrial boilers, etc.

  2. Thermal insulation of industrial kilns, such as heating furnaces, hot blast furnaces, etc.

  3. It is widely used in the heat preservation and insulation layer masonry of the space between the refractory brick and ketone body in various industrial kilns. It is suitable for furnace lining and thermal equipment of blast furnace, hot blast furnace, carbon roasting furnace, coke oven and so on.


Insulating fire brick application industry

  1. Iron and steel industry: Hot blast furnace, hot air pipe, sintering furnace, coke furnace, forging furnace, annealing furnace, carburizing furnace, heat preservation furnace, sintering furnace

  2. Nonferrous metal industry: Aluminum melting furnace, roasting furnace, crucible furnace, electroplating furnace, aluminum insulation furnace, reflection furnace, heat treatment annealing furnace

  3. Ceramic industry: Shuttle kiln, tunnel kiln, roller kiln, glass melting furnace

  4. Petrochemical industry: Heating furnace, cracking furnace, hydrogen production furnace

  5. Garbage incinerator, etc


Insulating fire brick has the advantages of energy saving and environmental protection, shortening the heating time of the kiln, improving the work efficiency of the kiln, and ensuring the constant temperature of the kiln, is one of the ideal refractory materials necessary for the industrial kiln.