The difference between light refractory brick and heavy refractory brick

Refractory bricks can be divided into many types. Lightweight refractory bricks and heavy refractory bricks are two of them. Lightweight refractory bricks refer to refractory bricks with a bulk density of less than 1.3g/m³, and heavy refractory bricks The density of refractory bricks is greater than 1.3g/m³. In layman's terms, the quality of the two is different. One is light and the other is heavy.

First of all, lightweight refractory bricks are also called heat-insulating refractory bricks, which are mainly used for heat preservation and heat insulation, and are used to reduce heat loss and heat loss of kilns or thermal equipment. They are generally used for permanent layers of thermal equipment or kilns.

The main function of heavy refractory bricks is to resist the erosion of gas or liquid, protect the kiln households or thermal equipment from the erosion of gas or liquid, and ensure the normal operation of the kiln. Generally used in the working layer of thermal equipment or kilns.

From the aspect of use, we can understand that the two different refractory bricks are used in different environments, so from the use environment, light refractory can not replace heavy refractory bricks.

Lightweight refractory bricks have low bulk density and high porosity. They can store heat in kilns. However, due to their low compressive strength, they cannot be used for parts that are scoured by gas or liquid. Heavy refractory bricks have high bulk density, low porosity, high compressive strength, good wear resistance, and can better resist gas or liquid erosion and friction.

From the basic performance indicators, we know that lightweight refractory bricks cannot replace heavy refractory bricks.

For light refractory conversion, the main function is heat preservation; the main function of heavy refractory bricks is high temperature resistance and corrosion resistance. There are certain differences between the two in essence, so the two are irreplaceable. Both light refractory bricks and heavy refractory bricks are commonly used refractory bricks in kilns. Due to different use environments, the selection of refractory bricks is also quite different.

Lightweight bricks generally use this kind of brick for normal indoor partition walls. The load-bearing capacity of the building is not large, and the sound insulation effect is very good! The strength products are made of high-quality tabular corundum and mullite as aggregates, sillimanite composite as the matrix, mixed with special additives and a small amount of rare earth oxides, and then high-pressure forming and high-temperature firing.

The advantages of lightweight bricks:

1. Economical: can reduce the basic cost. Planning to use lightweight bricks than solid clay bricks, the general cost can be reduced by more than 5%.

2. Practicability: The use of lightweight bricks can increase the use area. In hot summer, the indoor temperature is 2-3 degrees lower than the solid clay bricks, which reduces power consumption.

3. Constructability: Lightweight bricks have excellent workability and easy construction. Because of their large blocks and light weight, they can reduce labor intensity, improve construction efficiency, and shorten construction period.

Lightweight refractory bricks and heavyweight refractory bricks have different uses, but they all have their own proprietary features and uses. Both have their own advantages. They cannot be substituted for each other, but they can Matching with each other, the choice to use refractory bricks can be determined according to the actual situation.

QingDao Western Coast Advanced Materials Co., Ltd.: Refractory materials such as insulation bricks, please call us for consultation.