What Is The Difference Between Refractory Bricks And Castables For Boiler Linings?

Refractory bricks and castables are used in combination for boiler linings. The advantage of using refractory boiler bricks is that they are sintered at high temperatures. There is fatigue resistance. After good sintering to achieve good effect.

With refractory castables also have the advantages of castables, some parts of the irregular, and construction conditions are harsh, it is convenient to use refractory castables. Castable construction is convenient, short production cycle, the overall airtightness is good.

Refractory boiler bricks to castable materials of the same material in the case of the relative price will be more expensive, which is molding, sintering multiple production process costs caused by the refractory bricks, but stable performance, widely used, the total proportion of the use of the proportion is still higher than the proportion of castable materials.

Refractory castables require high technology, especially in the top of the furnace, the use of furnace wall proportion is on the rise.

Refractory boiler bricks have sintered bricks and non-fired bricks, the more common sintered bricks on the boiler are clay bricks, high alumina bricks, mullite bricks and insulation bricks. Non-fired bricks, also known as cement-bonded prefabricated parts, are also used in the furnace. However, they also have to be baked at a low temperature of 300 degrees to ensure the strength for use.

Refractory castables production process is simple, raw materials and refractory bricks are the same, but is made of a mixture of refractory aggregates, powders, binding agents and so on. After the construction of casting, maintenance and baking.

Refractory castables have a short cycle, while refractory bricks have a long production cycle and have to be produced and fired in advance, with high production costs. The castables are directly mixed and produced without firing. However, the amount of water added during construction has to be strictly controlled.

In short, whether it is refractory boiler bricks or castables, the control of the process production is the most important. According to different parts of the boiler, different temperatures. Refractory brick high-pressure molding, high-temperature sintering. Castables micropowder technology, construction to control the amount added in order to make the furnace lining service life longer.

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