Type

:

80 % Corundum based Alumina Brick

Method of Manufacture

:

Machine Pressed

Nature of Bond

:

Ceramic

Application area

:

Discharge Zone & Grate Cooler in

Cement Rotary Kiln.

CHEMICAL COMPOSITION

SPECIFICATION

TYPICAL VALUES

Al2O3

%

Min. 78.0

80.5

Fe2O3

%

2.00

1.90

PHYSICAL PROPERTIES

Apparent Porosity

%

Max. 18.0

17.5

Bulk Density

g/cc

Avg. 2.75

2.80

Cold Crushing Strength

kg/cm2

Min. 700

800

THERMAL PROPERTIES

P.C.E (Refractoriness)

orton / °C

Min. 37 / (1820)

38 / (1835)

R.U.L. ta

°C

Min. 1520

1530

P.L.C at 1500 °C /2 hrs.

%

Max. + 1.5

+0.90

Thermal Expansion at 1000OC

%

0.60

Thermal Conductivity

W/mK

2.25

At 1000OC Hot Face Temperature

Thermal Shock Resistance

by IS small prism Air Quenching

Cycles

+ 100

+ 100