What Castables are Used in Circulating Fluidized Bed Boilers?

Common castables for circulating fluidized bed boilers mainly include refractory concrete, refractory plastics, and refractory mud. These materials have good high-temperature resistance and chemical stability and can withstand extreme temperatures and corrosive environments inside the boiler.

Refractory concrete is mainly composed of a mixture of refractory aggregates and binders. It has high compressive strength and refractoriness, and can effectively protect high-temperature parts such as boiler furnaces and furnace walls.

Refractory plastic is a refractory material with a certain fluidity and strong plasticity. It can tightly fill the complex structure inside the boiler to form a uniform refractory layer with good insulation and heat preservation effects.

Refractory mud is mainly composed of refractory fine powder and adhesives. It can be easily applied to the inner wall of the boiler to form a solid protective layer with good thermal shock resistance and wear resistance.

When selecting castables, it is necessary to comprehensively consider the specific working conditions and operating requirements of the boiler. Factors such as temperature, pressure, and corrosiveness will affect the selection and use of castables. Therefore, it is recommended to select suitable castables under the guidance of professionals.

In addition, to ensure the use effect and service life of the castable, attention should be paid to mixing, stirring, and laying according to the prescribed ratio and process requirements during construction, and try to avoid the influence of factors such as drying shrinkage and temperature changes on the castable. At the same time, regular inspections and maintenance should be carried out during use to promptly discover and deal with existing problems to ensure the safe and stable operation of the boiler.

The above content is for reference only. If you need more information, it is recommended to consult relevant industry specifications or consult relevant technicians.