Boiler combustion properties with refractory material should have included slag resistance, high strength, wear resistance, thermal stability, and thermal conductivity higher performance. The traditional ignition belt mainly used chrome refractory ramming material, but because of the high chromium resource scarcity, therefore is the main use of silicon
carbide ramming material, silicon carbide high alumina coating material, high aluminum phosphate can be plastic, plastic high-temperature expansion.
carbide ramming material, silicon carbide high alumina coating material, high aluminum phosphate can be plastic, plastic high-temperature expansion.
The first two kinds of materials are expensive, but long life, good performance, and then two kinds of material price is low, but performance in general, and short service life. Therefore in the cyclone furnace slag tap furnace and should not be used in high phosphate refractory plastic or ramming material, avoid peeling or cracks in use, so as to improve the slag resistance of material and reduce the repair frequency.
High-temperature micro expansion refractory plastic and super 3000 water clay refractory performance considerably, showing some advantages when applied to a wall pipe and the top of the boiler. But the material in its solidification time is long, easy to dry shrinkage crack, so as to the construction and maintenance of a big trouble. At the same time delivery quality exist certain volatility, sometimes refractoriness and strength at room temperature is below 1580 degrees and 981N/cm2.
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