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Refractory brick difference
Generally, refractory bricks are generally classified into two types, namely, an amorphous refractory material and a shaped refractory material. According to different material compositions, they can be divided into five categories, namely silicon-aluminum refractory bricks, alkaline series refractory bricks, carbon-containing refractory bricks, zirconium-containing refractory bricks, and heat-insulating refractory bricks.
Refractory bricks are refractory materials that are fired from refractory clay or other refractory materials. Light yellow or brownish. Refractory bricks are refractory materials of a certain shape and size. According to the preparation process, it can be divided into fired bricks, non-burned bricks, fused bricks (melted cast bricks), and fire-resistant insulating bricks; according to the shape and size, it can be divided into standard bricks, ordinary bricks, and special bricks.
Refractory bricks can be used as high-temperature building materials and structural materials for building kiln and various thermal equipment, and can withstand various physical and chemical changes and mechanical effects at high temperatures. For example, refractory clay bricks, high alumina bricks, silica bricks, magnesium bricks, and the like. Refractory bricks are one of the most widely used products in refractory materials. So what characteristics does it have?
1. Chemical composition: The main components determine the quality and characteristics of refractory bricks.
2, bulk density: unit volume weight, density, indicating that the refractory bricks have good compactness, the strength may be high, but the thermal conductivity may be large.
3, obvious porosity: no specific requirements, but as a refractory brick manufacturer must strictly control the vent.
4, load softening temperature: also called high temperature load to start deformation temperature, this parameter is very important, marking the resistance of refractory bricks to high temperature resistance.
5, anti-thermal shock performance: resistance to temperature changes with great ability without damage.
6. Linear rate of change: Also called the change of the reburning line or the change of the residual line, which refers to the quality of the refractory brick produced at the same temperature each time.
7. Flexural strength: The ability to withstand shear pressure.
8. Compressive strength: the maximum pressure capacity to withstand (normal temperature)
The life of high alumina bricks is related to those aspects