BOILER REFRACTORY WORK

Refractories are heat resistant materials used to line boilers, furnaces and other processing
equipment. They play a critical role in reducing heat loss in boilers and maximizing efficiency.

The Role of Refractories in Boiler Performance :
Refractory materials are used to line boiler combustion chambers. High-grade refractories ensure
minimal heat loss during the combustion process, thereby increasing the efficiency and
performance of the boiler.

HOW QUALITY OF REFRACTORY IS IMPORTANT FOR FURNACE :
Refractory quality is tremendously important. High-quality materials are needed to ensure safe
boiler operation and also to prolong the life of the boiler. The use of low-quality refractories can
increase the risk of extended downtime and equipment failure. They also can significantly reduce
the safety of boilers and elevate the risk of accidents.
Another important function of refractories is to preserve heat in the boiler when it is not in
operation. This allows operators to maintain heat between firings, which increases thermal
efficiency.

Refractory Repair :
While refractories are often very robust and capable of withstanding high temperatures and
pressures and mechanical abrasion, they do wear out over time. When this occurs, refractories
must be repaired or replaced.

The failure of refractories can be due to a number of factors including spalling, chemical
corrosion, and incorrect installation. Spalling is one of the major causes of refractory failure. It
can be thermal or mechanical in nature. Thermal spalling is caused by unequal expansion and
contraction of refractory material. Mechanical spalling often arises when the refractory is loaded
incorrectly or mishandled.

Common signs that the refractory material of your boiler may need repair include fractured or
broken refractory tiles. You may also see evidence of boiler leaks, difficulty in opening and
closing refractory doors, and damaged seal joints.

Overall, the failure of refractories can cause a substantial drop in boiler performance. As a result,
it’s vital for operators to not only invest in quality refractories, but also to have a qualified and
experienced boiler technician on call to carry our refractory repairs when necessary.