What are the requirements for the use of refractory bricks?

In the process of use, refractory bricks are subject to physical, chemical, mechanical and other effects at high temperature, which are easy to melt or be eroded and worn, which will cause cracking and damage, which will interrupt the operation and contaminate materials. According to the composition and performance of refractory bricks, can predict the use of refractory bricks at high temperature, the following is a detailed introduction to the use of refractory bricks.

Specific requirements for use:

①It can resist high temperature heat load without softening and melting; the refractoriness of refractory bricks is required to be quite high;

②It can resist the effect of high temperature heat load, and the volume does not shrink and only expands uniformly; the refractory bricks are required to have high volume stability, and the residual shrinkage and residual expansion should be small.

No crystal transformation and serious volume effect;

③ It can resist the combined action of high temperature thermal load and heavy load, without losing strength, without creep and collapse; refractory bricks are required to have relatively high normal temperature strength and high temperature thermal strength, high load softening temperature, and high creep resistance.


④It can resist rapid temperature changes or the influence of uneven heating, without cracking or peeling; it is required that the refractory bricks have good thermal shock resistance;

⑤ It can resist the chemical erosion of molten liquid, dust and gas, without deterioration and corrosion; the refractory bricks are required to have good slag resistance;

⑥ It can resist the scouring, impact and wear of flame, charge and dust, and the surface is not lost; refractory bricks are required to have high compactness and wear resistance at room temperature and high temperature;

⑦ Resist the influence of high temperature vacuum operation and atmospheric changes, non-volatile and non-damaged;

⑧Refractory bricks are required to have low vapor pressure and high chemical stability; neat appearance, accurate specifications and dimensions of refractory bricks, high quality and low price, easy transportation, construction and maintenance;

⑨ For refractory bricks with special requirements, their thermal conductivity, electrical conductivity and air permeability should also be considered;、

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