Si3n4 Brick

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Product Description:

1. Performance of si3n4 brick

High strength

Low thermal expansion coefficient

Good thermal conductivity and thermal shock resistance

Good resistance to liquid aluminum erosion capability

High erosion

2. Chemical & Physical Specification of si3n4 brick


Index

Al electrolysis cell block

Kiln furniture brick

Pipe

SIC, % ≥

72

70

70

Si3N4, % ≥

20

20

20

Fe2O3, % ≤

0.7

0.7

0.7

Bulk Density, g/cm3

2.62

2.60

2.55

Apparent Porosity, % ≤

17

18

20

Cold Crushing Strength, Mpa ≥

150

140

120

MOR, Mpa

Room temp. ≥

42

40

35

1400°Cx0.5hrs ≥

45

45

40

Refractoriness Under Load (0.2Mpa,0.6%), °C ≥

1700

1700

----

Thermal Shock Resistance

(Water quenching at 1100), cycle ≥

30

30

----



3. Typically Application of si3n4 brick:

1.) Side wall Electrolyzer cell chemical-industrial reaction pot.
2.) Used as Kiln shed board, slide push board, sagger, Tuyere combined bricks.

3.) Used in blast furnace belly, Bosh and lower stack, cooling wall, rubbish burning furnace and boiler



4. Production process of si3n4 brick

a.) Choose metal silicon as raw material, add additives, then mix.

b.) Put the mixture into the mold, then make embryoid by machine pressing.

c.) Be reaction sintered by nitrogen protection in electric furnace.

5. Packing details of si3n4 brick

a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.

b.) We also pack products as custom request.


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