Firebricks, referred to as fire bricks, have a certain shape and size of the refractory material. According to the preparation process, it can be divided into fired brick, unfired brick, electric fused brick (fused cast brick), refractory heat insulation brick; According to the shape and size can be divided into standard brick, ordinary brick, special type brick and so on. It can be used as high temperature building materials and structural materials for building kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical effects at high temperatures.

Such as refractory clay brick, high aluminum brick, silicon brick, magnesium brick and so on.

Features:

1, chemical composition: the main composition determines the quality and characteristics of the refractory.

2, volume density: unit volume weight, high density, indicating good density, strength may be high, but the thermal conductivity may be large.

3, apparent porosity: no specific requirements, but as a manufacturer must strictly control the apparent porosity.

4, load softening temperature: also known as high temperature load deformation temperature, this parameter is very important, marking the resistance of the material to high temperature.

5, thermal shock resistance: the ability to resist rapid temperature changes without being destroyed.

6, compressive strength: the maximum pressure capacity to withstand (room temperature).

7, bending strength: the ability to withstand shear pressure.

8, linear rate of change: also called reburn line change or residual line change, refers to each time in the same temperature change in the volume of expansion and contraction changes, such as each expansion and contraction, we define such a linear rate of change is 0.

9, wear resistance: we all know I will not say more, it is one of the best indicators of refractory quality.

10, thermal conductivity: under the condition of unit temperature gradient, the heat flow rate through the unit area of the material is related to the porosity.

11, impact resistance: good impact resistance, long service life.

12, slag resistance: at high temperature and low resistance to slag erosion without being destroyed.