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Supplier Homepage > Products > Spalling Resistance High-alumina Brick
Spalling Resistance High-alumina Brick
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product: view count: 411Spalling Resistance High-alumina Brick 
unit price: Negotiable
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period for delivery: Consignment Deadline days
Expiry date: Long Effective
last update: 2018-09-13 15:54
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Product description:
Adding zirconia fine powder to the high alumina brick batching, the solid solution of zirconia and alumina is changed during the high temperature sintering process, and small microcracks are formed, thus changing the internal structure of the product and improving the suddenly-changing temperature resistance of the product. compared with the general high alumina brick, The thermal shock resistance of the product has been improved by about three times. At the same time, the high temperature resistance、wear resistance and compactness of the product has also been greatly improved. It is widely used in many high temperature industrial furnaces.


Index:

Item

JB70

JB75

JB80

JB85

Al2O3 ≥ %

70

75

80

85

Fe2O3 ≤ %

1.5

1.5

1.5

1.5

ZrO2 ≤ %

6.0

——

——

——

Refractoriness ℃

——

1790

1790

1790

Apparent porosity  %

22

22

22

22

Bulk density  g/cm3

2.55

2.55

2.7

2.7

Cold crushing strength Mpa

60

60

60

70

Refractoriness under load  T2,℃

1470

1500

1550

1550

Reheating linear change 1500℃×2h,%

——

0.1~–0.3

0.1~–0.3

0.1~–0.3

Thermal shock resistance,  times

20

30

30

30

Remarks

——

Contain andalusite


Product characteristics:
Adding Zircon Sand to high aluminum bricks, which changes the mineral structure of the original product, and improves the suddenly-changing temperature resistance of the product by more than two times. At the same time, it also improves the working temperature and wear resistance of the product.

Application: 

As a kiln furniture product, the product is widely used in heating furnace, annealing furnace, cement kiln and lime kiln.

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