What are Refractory Bricks

Refractory brick is a kind of brick with refractory properties. It can withstand high temperatures of about 1500-1900℃. In addition, some high-quality refractory bricks are also anti-corrosion. Its main materials are high alumina bauxite and quartz. Made of refractory raw materials such as clay, feldspar, etc., they are usually used in the construction of various high-temperature kilns such as industrial furnaces, high-temperature furnaces, smelting furnaces, etc. Today I will introduce the types, characteristics, and physical and chemical properties of refractory bricks. In the indicators and other parts, I will tell you in detail what refractory bricks are.

There are many types of refractory bricks. According to different temperatures and uses, they can be divided into ordinary refractory bricks, high-grade refractory bricks, lightweight refractory bricks, special-shaped bricks, etc. At present, our common refractory bricks include high-alumina refractory bricks, corundum bricks, and carbonized refractory bricks. Silica bricks, andalusite bricks, clay bricks, silica bricks, etc. are usually selected according to the location and temperature used. Among them, high alumina refractory bricks are the most common type of refractory bricks in high-temperature kilns.

What we need to pay attention to when purchasing refractory bricks should be the various performance indicators of refractory bricks, such as refractory degree, load softening point, compressive strength, thermal conductivity, chemical corrosion, and other physical and chemical indicators. These indicators reflect whether the refractory bricks have extraordinary properties. Good working performance, among which, the refractory degree is an important indicator to measure the refractory performance of refractory bricks. It refers to the maximum temperature at which refractory bricks can withstand high temperatures without being damaged at a certain temperature. The load softening point refers to the temperature at which refractory bricks begin to deform when they bear a certain weight. Flexural strength refers to the maximum stress that refractory bricks can bear without breaking when subjected to a certain bending moment. Thermal conductivity refers to the heat transferred by refractory bricks per unit time and unit area.

Refractory bricks must be used with high-temperature refractory mortar during use. What is high-temperature refractory mortar has been introduced to you before. You can read the previous article. Refractory bricks are bonded by high-temperature mortar to form a refractory brick. The wall provides a guaranteed working environment for high-temperature kilns and ensures that high-temperature kilns can operate normally and stably in high-temperature environments.

Therefore, refractory bricks are an important refractory material. They are very important in the construction process of high-temperature kilns. They directly affect the use and life of high-temperature kilns. We must choose appropriate refractory bricks during the purchase process. To ensure the use of high-temperature kilns.