Home | Contact | Site map

 

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

 
 
   

Typical Product Specification of Indian Refractories - Basic Bricks

Some typical specifications of Indian refractories commonly used in the furnaces and kilns in steel, cement, non-ferrous metals and glass industries are given below. These are illustrative and do not cover the full range of products and some of the improved items which have been recently developed.

DIRECT BONDED BASIC BRICKS
CHEMICAL PROPERTIES 


MgO (%) (Min) 
60 
57 
55 
Cr 2 O3 (%) (Min) 
16 
21 
18 
SiO 2 (%) (Max) 
2.5 
1.5 
PHYSICAL PROPERTIES 


A.P. (%) (Max) 
18 
18 
18 
C.C.S. (kg/cm²) (Min) 
400 
500 
400 
RUL (ta°C) (Min) (2 kg/cm²) 
1700 
1750 
1750 
MOR (kg/cm²) (Min) 


at 1400°C 
100 
at 1500°C 
40 
40 
Application 
AOD, OTB & VOD wear lining 

MAGNESIA CARBON BRICKS
CHEMICAL PROPERTIES 



MgO (%) (Min) in SWM as used 
97 
97 
97 
97 
Fired Carbon (%) (Min) 
12 
18 
PHYSICAL PROPERTIES 



A.P. (Vol. %) (Max) 
B.D. (gm/cc) (Min) 
2.95 
2.90 
2.85 
C.C.S. (kg/cm²) (Min) 
500 
500 
400 
300 
MOR (kg/cm²) (Min) at 1400°C 
90 - 120 
90 - 120 
90 - 100 
90 - 100

BASIC BRICKS FOR GLASS INDUSTRIES REGENERATORS
CHEMICAL PROPERTIES 


MgO (%) (Min) 
88 - 90 
94 
97.5 
Fe 2 O3 (%) (Max) 
0.8 
1.6 
0.2 
CaO (%) (Max) 
2.5 
1.9 
1.5 
SiO 2 (%) (Max) 
6.5 
2.8 
0.7 
PHYSICAL PROPERTIES 


B.D. (gm/cc) (Min) 
2.85 
2.95 
A.P. (%) (Max) 
20 
18 
17 
C.C.S. (kg/cm²) (Min) 
350 
500 
450 
PCE (SK) (Min) 
38 
40 
42 
RUL (ta°C) (Min) (2 kg/cm²) 
1550 
1650 
1700 
PLC (%) (Max) at 1600°C for 2hrs. 
0.5 
0.5 
0.5

BASIC GUNNING MATERIAL
CHEMICAL PROPERTIES 
MgO (%) (Min) 
85 
Cr 2 O3 (%) (Min) 
PHYSICAL PROPERTIES 
Refractoriness (SK) (Min) 
38 
PLC (%) after firing to 1550°C for 2hrs. 
-1.5 
CCS (kg/cm²) (Max) after firing to 1500°C for 2hrs. 
200 
Grading (mm) 
0-3 
Application 
BOF, EAF 

BASIC RAMMING MASS
CHEMICAL PROPERTIES 

MgO (%) (Min) 
95 
87 
Fe 2 O3 (%) (Max) 
0.2 
SiO 2 (%) (Max) 
PHYSICAL PROPERTIES

Setting 
Chemical 
Chemical 
Sintering temp. (°C) 
1550 
1200 
Grading (mm) 
0.5 
0.8 
Application temp. (°C) 
1750 
1750 
Application  Special low Silica high MgO compound for ramming or vibro-casting Especially suitable for ramming tap holes of BOF  Dry ramming mass for EBT-UHP-EAF bottom 

 

 

     
 
 

Indian Refractory Makers Association
All Rights Reserved