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Cement Industry

The list is illustrative and does not cover the full range of products and some of the improved items which have been recently developed.
 
Refractories for Cement plant Pre Heaters A B C
Al2O3 % 40 30 60
Fe2O3 % 2.5 3.0 2.5
RUL (ta °C) 1450 1350 1500
CCS (kg/cm2) 350 300 400
AP % 22 25 20
Reheat linear change % 0.8 1.0 0.5
 at °C for 2 hrs 1450 1350 1450
Spalling resistance at 1000°C air quenching (cycles) 30 25 30
Thermal conductivity at 700°C (K.Cal/M/hr/°C) 1.2 1.0 1.4


 
Refractories for Cement Rotary Kilns A B C D E
Al2O3 % 80 70 70 60 45
Fe2O3 % 2.0 2.5 1.8 2.5 2.5
RUL (ta °C) 1550 1500 1550 1480 1450
CCS (kg/cm2) 600-800 450-600 350 400 N.A.
AP % 20 23 23 24 24
PLC %  1.0 2.0 0.5 1.0 0.8
  at °C for 2 hrs 1450 1450 1500 1450 1450
Spalling resistance at 1000°C air quenching (cycles) 30 30 N.A. 30 12
Thermal conductivity at 700°C (K.Cal/M/hr/°C) 1.9 1.6 N.A. 1.4 1.2

 

Basic Refractories for Cement Rotary Kilns A B C D E
MgO % 72 63 60 60 60
Cr2O3 % 6 11 12 13 15
AP % 23 22 18 18 20
CCS (kg/cm2) 200 300 300 300 300
RUL (ta °C) 1500 1570 1650 1700 1650

 

 

     
 
 

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