The Cause of the Thermal Explosion of Refractory Bricks is Revealed

2023-06-02 10:44:41

The thermal explosion of refractory bricks refers to the temperature difference between the surface and the interior of the refractory bricks when the refractory bricks are subjected to rapid cooling and rapid heating. Due to the existence of refractory brick expansion joints, stress is generated inside the refractory brick masonry. The subsequent burst is called a thermal burst.

1. The mineral phases that make up siliceous refractory bricks, such as quartz, tridymite, and cristobalite, change in temperature as the crystal form of quartz changes, and the volume changes accordingly, so heating or cooling siliceous refractory brick structure masonry, need to pay special attention to the problem of the thermal burst.

2. Magnesia refractory bricks or magnesia-chrome refractory bricks are prone to thermal bursting when the temperature changes suddenly due to their large thermal expansion coefficient.

3. Insulating refractory bricks, due to their low thermal conductivity, the temperature gradient in the refractory bricks is large, and because of their relatively low strength, they are also prone to thermal explosion problems.

The main products of Henan Xinhongji Refractory Material Co., Ltd. include high alumina bricks, clay bricks, lightweight insulation bricks, refractory castables, and shaped and unshaped materials of various grades of refractory cement. For different industries, the cement industry uses anti-flaking high-alumina bricks, alkali-resistant bricks, and phosphate bricks; the boiler industry uses various grades of wear-resistant bricks, corundum bricks, mullite bricks, and other stereotyped materials. The company insists on “product quality is the life, enterprise integrity is the foundation”, and has won the trust and praise of many users in the fierce market competition. Refractory products are sold all over the country and exported to Vietnam, India, South Korea, Pakistan, Iran, and other Southeast Asia regions.

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