Refractory Bricks
High alumina refractory castable

High alumina refractory castable

Refractory castable is one of the unshaped refractory materials.It is made of refractory aggregate . refractory powder . binders and other additives. It is loose, No fixed shape,Has high liquidity, Casting and vibration molding,Can use directly or use after add appropriate water or other liquid. It is one of the new type refractory material of don't need calcination.

Features:

1. High refractoriness, High refractoriness under load.

2. High density, low porosity.

3. Good slag resistance and corrosion resistance.

4. High strength and wear resistance.

5. Good resistance to flake performance.

6. Good thermal shock stability.

7. Scouring resistance

Physical and chemical index:

Item

Index

CLC-90

ALC-80

ALC-70

ALC-60

ALC-50

Al2O3 ( %)  ≥

90

80

70

60

50

CaO ( %)   ≤

2.0

2.0

2.5

2.5

2.5

Bulk density (kg/m3) ≥

110°C×24h After drying

3.0

2.80

2.60

2.50

2.40

1500°C×3h After heating

3.0

2.75

2.50

2.40

2.30

Compression strength

( Mpa ) ≥

110°C×24h Drying after

50

45

40

35

30

1500°C×3h After burn with fire

80

75

70

65

60

Modulus of rupture

( Mpa ) ≥

110°C×24h After drying

12

10

8

8

5

1500°C×3h After heating

14

12

10

10

8

Linear change rate after heating (%)≤

110°C×24h After drying

-0.1

-0.1

-0.1

-0.1

-0.1

1500°C×3h After heating

-0.4

-0.5

-0.5

-0.5

-0.5

Maximum service temperature(°C)

1700

1600

1500

1450

1400

Application

All industrial furnace


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