Hongda Refractory believes that the lining of boilers often suffers damage to refractory bricks and arch bricks, which affects the normal operation of the boiler and even forces it to shut down. When purchasing refractory bricks, priority should be given to whether the quality of the refractory products themselves meets the requirements for the use of boiler linings. Choosing suitable high-quality products can save a lot of maintenance costs. Let's take a look at the causes of damage to refractory bricks together.

Phenomenon of lining damage in boiler combustion chamber

(1) Bricks can be found in the ash hopper (pit), and the original shape and quantity of the discovered bricks should be retained. In order to identify the location of damage to the pole and determine the cause of the damage.

(2) Abnormal temperature rise occurs in the lifting components of furnace wall supports, shells, and arch bricks, and even burns red in severe cases.

(3) There is a large amount of cooling air leaking into the damaged area.

Causes of damage to refractory and refractory bricks in the boiler combustion chamber

(1) The refractory materials used in blast furnaces are believed to have a skewed flame center or excessively high combustion chamber temperature, resulting in coking on the furnace wall or arch.

(2) Improper operation when using refractory materials for coke removal in blast furnaces. Damage the furnace wall or arch.

(3) Excessive load increase or decrease. Causing a sharp increase or decrease in the thermal load of the combustion chamber, causing damage to the furnace wall and bricks due to rapid expansion and contraction.

(4) During the shutdown and ignition of refractory materials used in blast furnaces, the cooling and heating are too rapid.

(5) The refractory materials used in the blast furnace were poorly repaired, and the furnace was not dried according to the drying procedure after the gun repair.

(6) The mix proportion of the refractory mortar used for building the furnace wall is not appropriate, or there is not enough expansion gap left, or sundries fall into the expansion joint, affecting the normal expansion and contraction.

(7) The water cooled wall pipe of the ceiling is bent and deformed, causing damage to the irregular refractory bricks of the ceiling.

(8) Small gas explosions occur in the combustion chamber and the tunnel, causing damage to the furnace wall

The above is most of the reasons why Hongda Refractory Materials often causes damage to the inner walls of boilers, and there will be updated news in the future. Please keep an eye on it.