Wear-resistant Castable Used for Circulating Fluidized Bed Boiler (CFB)

July 06, 2018
Jundao(Henan) New Materials Co.,Ltd. Produces common, high strength wear-resistant castable, high-Al, SiC, Corundum self-flow wear-resistant castable used for different parts of CFB boiler.
The CFB boiler construction body is extremely complex, the factors of large amount of construction, high pulverized coal flow rate and large flow that demand the lining refractory with high strength, good wear-resistance, and excellent workability. The wear-resistant castable produced by Jundao with the characters: high strength, good high-temp performance, volume stability, small thermal conductivity, strong anti-slag penetration and erosion resistance, easy to construct and good structural integrity etc. Compared with traditional castable, which can greatly improve the boiler's running time. 
Jundao uses various of artificial synthetic materials such as high-Al bauxite, corundum, and silicon carbide as the main materials, adding with admixtures, high efficiency water reducer and flow agent, thus enhances the flowing property. The main product character: In the case of not increasing water consumption, the product can flow only depends on the self-weight and potential energy difference, and in the state of non-vibration, the construction can be done in the places of clamps and unshakeable areas, which has a good quality of construction. The product is mainly used for the difficult to construct, wearing and tearing badly parts of CFB boiler.

Item

Index

NMJ-1

NMJ-2

NMJ-3

Al2O3   %           ≥

60

65

70

Bulk density  g/cm3   ≥

2.40

2.60

2.80

Cold crushing strength  MPa  ≥

110℃*24h dry off

55

60

65

1110℃*3h burn off

80

90

100

Bending strength        MPa  ≥

110℃*24h dry off

7

8

9

1110℃*3h burn off

9

11

13

Wear extent at normal temp      ≤

9

8

7

Reheat linear change  1110℃*3h    %

±0.3

±0.3

±0.3

Resistance to thermal shock     times

20

20

20

The highest working temp      ℃

1400

1450

1450

 

 

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