Home | Contact | Site map

 

About Us | Services | IRMA Members | IRMA Publications | IRMA Data Bank | Indian Refractories | Bulletin Board| Photo Gallery| Links

 
 
   

Glass 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.
 
Mullite Bricks A B C
Al2O3 % 70 74 60
Fe2O3 % 0.5 0.5 2.0
B.D. (gm/cc) 2.55 2.60 2.50
A.P. % 18 17 20
C.C.S. (kg/cm2) 500 700 400
RUL (ta °C) 1700 1700 1550
PLC % ±0.2 N.A. 1.0
  at °C for hrs 1500/2 N.A. 1400/5


 
Zircon Bricks A B
SiO2 % 0 33
ZrO2 % 63 60
A.P. % 20 19
C.C.S. (kg/cm2) 500 600
RUL (ta °C) 1600 1550

 

Zircon Mullite Bricks A B
Al2O3 % 70 68
ZrO2 % 17 18
A.P. % 17 21
C.C.S. (kg/cm2) 800 500
RUL (ta °C) 1650 1600

 

Silica Bricks for Furnace Roof A B
SiO2 % 96.2 95.3
Fe2O3 % 0.4 0.9
Al2O3 % 0.43 0.70
CaO % 2.5 2.5
B.D. (gm/cc) 1.82 1.80
A.P. % 21 22
C.C.S. (kg/cm2) 410 400
RUL (2kg/cm2) 1690 1670
PLC % 0.15 0.20
  at °C for hrs 1450/2 1450/2

 

Basic Bricks for Regenerators A B C D
MgO % 88-90 94 97 64
Cr2O3 % 0 0 0 21
Al2O3 % N.A. 0.3 0.2 5.0
B.D. (gm/cc) N.A. 2.92 2.95 3.10
A.P. % 20 17 16 18
C.C.S. (Kg/cm2) 350 450 500 400
RUL (ta °C) (2 kg/cm2) 1550 1600 1750 N.A.
PLC % 0.5 0.5 0.5 0.3
  at °C for 2hrs 1600 1600 1600 1700

 

Fused-cast refractories for glass melting furnace A B C
Al2O3 % 49.0 49.1 46.8
ZrO2 % 34.8 37.3 41.0
SiO2 % 14.8 12.3 11
BD (gm/cc) 3.70 3.78 3.94
AP % 1 1 1
MOR (kg/cm2) 689 615 559
Linear Thermal Expansion % (1100°C) 0.83 0.90 0.89
Thermal conductivity (K.cal/M.hr) (1000°C) 2.4 2.5 2.7

 

 

     
 
 

Indian Refractory Makers Association
All Rights Reserved