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Zirconium Corundum Refractory Castable Material Kiln Bottom Sealing Layer

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Zirconium Corundum Refractory Castable Material Kiln Bottom Sealing Layer

Zirconium Corundum Castable

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Description

Zirconium corundum refractory castable is used for cold patching and heat patching for the safety layer, the kiln wall protective layer and the upper structure of the glass kiln bottom.

Al2O3%

45

45

45

ZrO2%

29

30

30

SiO2%

20

18

18

Bulk density g/cm3

3.0

2.65

2.8

Flexural strength MPa ≥

110℃×24h drying

11.5

12.1

1100℃×2h after burning

18

18

Compressive strength/MPa ≥

110℃×24hdrying

85

85

1100℃×2h after burning

100

100

Resistance to glass solution erosion

good

good

good

The tendency of bubbles to precipitate

weak

weak

weak

Casting water requirement /%

4~5

8~10

10~11

Application

kiln bottom sealing layer

for the next

layer of 50V

upper layer bricks

filling gaps between surface bricks

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