The Wear Resistant Castable Refractory in CFB Boiler

July 01, 2018

The wear resistant castable mianly refer to castable with good abrasion resistance at normal temperature and specific temperatures.The abrasion performance of the wear resistant castable at normal temperature can be measured according to the national standard GB/T 18301-2001 (equivalent to ASTMC704-1994),and the wear capacity is small,the better the wearability of the castable is better.

The main features of wear-resitant castable are good volume stability, high strength, good abrasion resistance, thermal shock resistance, corrosion resistance, no cracking,no peeling and so on.

The raw material of the wear resistant castable must be characterized by large bulk density and high mechanical strength. The main raw material are fused corundum, sintered corundum, fused zirconia corundum, silicon carbide,silicon nitride and so on.In addition, in order to improve the toughness and wear resistance of the materials, heat-resistant steel fibers are generally added.

The wear-resistant refractory castable is mainly used for cyclone separators in circulating fluidized bed boilers, dense phase chambers, the furnace outlet, the water cooling aire chamber, the slag cooler, feeders, the ignition ducts etc.

Refractoriness

Working temperature

Bulk Density

 

Thermal Conductivity

(Hot Face 1000℃ )

Apparent Porosity

 

Thermal

Expansion coefficient

(1200℃)

Linear Change Rate

(110℃~1100℃)

Cold Crushing Strength

 

Bending Strength

 

110℃

815℃

110℃

815℃

1100℃

≥1790℃

1500℃

2800kg/m3

<1.5 W/m·k

<20%

0.5%

0~-0.2%

≥75mpa

≥85mpa

≥10mpa

≥15mpa

≥20mpa

For Reference Only, Can be Customized

 

 

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