1. Increase the molding pressure of the brick machine.

　　With the increase of brick making force, the density of refractory bricks increases. Only by increasing the density of the billet can the brick with high strength be fired. The molding pressure of refractory bricks is 2.2 ~ 2.3 MPa, and the compressive strength of sintered bricks is generally 13.9 ~ 15 MPa, while the molding pressure of 3 MPa of green bricks and sintered bricks is easy to reach the compressive strength of 20 MPa.


2, appropriately increase the sintering temperature of refractory bricks.






3, appropriate extension of insulation time.


　　Experiments show that in the same raw materials, the same brick machine, the same heating and freezing speed, 900 sintering temperature and different insulation time, the compressive strength of refractory bricks is different, appropriate insulation time is conducive to improving the compressive strength and quality of bricks.


　4, it is recommended to use low temperature long time burning.

　　At present, refractory bricks are generally mixed combustion, often using "high temperature short burn" to increase production. Long-term practice has proved that the internal combustion bricks "high temperature short burn" firing method to improve the refractory bricks, product quality has a certain impact, the product often appears black heart, black scars, cracks, embossing and other phenomena, compressive strength is also reduced. More seriously, it increases coal consumption, waste of energy, not conducive to the protection of the ecological environment.

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