Refractory brick's own properties
1. Chemical composition: The main ingredients determine the quality and characteristics of the refractory
2. Bulk density: weight per unit volume, high density, indicating good compactness, high strength, but high thermal conductivity
3. Apparent porosity: There are no specific requirements, but the manufacturer must strictly control the apparent porosity.
4. Load softening temperature: It is also called the temperature at which the high-temperature load begins to deform. This parameter is very important, which indicates that the material is resistant to high temperatures.
5. Thermal shock resistance: resistance to rapid temperature changes without being destroyed
6, compressive strength: the ability to withstand the maximum pressure (normal temperature)
7. Flexural strength: ability to withstand shear pressure
8. Linear change rate: also called reburning line change or residual line change, refers to the change in volume expansion and contraction each time the same temperature changes, if each expansion and contraction is the same, we define this linear change rate to 0
Physicochemical properties of refractory bricks
1, abrasion resistance:
2. Thermal conductivity: under the condition of unit temperature gradient, the heat flow rate per unit area of ??the material is related to the porosity
3. Impact resistance: no need to explain it, the impact resistance is good, and the service life is long
4. Resistance to slag: ability to resist slag erosion without being destroyed at high temperature
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