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REFRACTORY FOR IRON SMELTING
 
REFRACTORY FOR IRON SMELTING   |  REFRACTORY FOR STEEL MAKING  |  REFRACTORY FOR CEMENT KILN  |  SILICON CARBIDE REFRACOTRY  |  REFRACTORY FOR NONFERROUS REFINING  |  REFRACTORY FOR GLASS FURNACE  
   Si3N4 BONDED SiC BRICKS for Blast Furnace
Item Unit Porperties
SiC content   Min. % 72
Si3N4 content Min. % 22
Fe2O3 content Max. % 0.3
Apparent Porosity             Max. % 16
Bulk Density Min. g/cm 3 2.68
Cold Crushing Strength  Min. MPa 180
Bending Strength Room Temp. Min. MPa 45
1400 oC 55
Thermal Conductivity 650 oC   W/m.k 19.5
1000 oC   17.2
   FIRECLAY BRICKS for Blast Furnace
Item Unit Porperties
SiC content   Min. % 72
Si3N4 content Min. % 22
Fe2O3 content Max. % 0.3
Apparent Porosity             Max. % 16
Bulk Density Min. g/cm 3 2.68
Cold Crushing Strength  Min. MPa 180
Bending Strength Room Temp. Min. MPa 45
1400 oC 55
Thermal Conductivity 650 oC   W/m.k 19.5
1000 oC   17.2
   HIGH-ALUNINA BRICK for Blast Furnace
Item Unit Product Code
GL-65 GL-55 GL-48
Al2O3 content   Min. % 65 55 48
Fe2O3 content     Max. % 1.8 1.8 2.0
Apparent Porosity             Max. % 19 19 18
Cold Crushing Strength  Min. MPa 60 50 50
Refractoriness under load Min. oC 1500 1480 1450
Refractoriness Min. oC 1800 1780 1760
Linear Charge after reheating 1500 oC2h % 0 - -0.2 0 - -0.2 -
1450 oC2h - - 0 - -0.2
   MULLITE BRICKS for Blast Furance
Item Unit Corundum Mullite Andalusite Silimanite
Al2O3 content   Min. % 80 70 60
Fe2O3 content     Max. % 0.5 0.8 1.5
Apparent Porosity             Max. % 18 18 18
Cold Crushing Strength  Min. MPa 100 70 70
Refractoriness under load Min. oC 1650 1600 1500
Refractoriness Min. oC 1800 1800 1800
Linear Charge after reheating 1450 oC3h % 0 - -0.4 0 - -0.4 0 - -0.4
   LOW-CREEP BRICKS for Blast Furnace & Hot Blast Stove
Item Unit Low-Creep High Aluminium Low-Creep Fireclay
DRL-80 DRL-75 DRL-44
Al2O3 content   Min. % 80 75 44
Fe2O3 content     Max. % 1.8 1.8 2.0
Apparent Porosity             Max. % 19 21 18
Cold Crushing Strength  Min. MPa 50 50 45
Refractoriness under load Min. oC 1520 1500 1420
Creep Rate 20-50 hours Max. % 1450 oC +/-0.2 1350 oC +/-0.2 1200 oC +/-0.2
   ALUMINUM-CARBON BRICKS for Blast Furance
Item Unit Product Code
AC65
Al2O3 content   Min. % 65
C content       % 10
Apparent Porosity             Max. % 18
Cold Crushing Strength  Min. MPa 60
Refractoriness under load Min. oC 1650
   HIGH-ALUMINUM BRICKS for Hot Stove
Item Unit Product Code
A-80 A-75 A-65 A-55
Al2O3 content   Min. % 80 75 65 55
Fe2O3 content     Max. % 1.8 1.8 2.0 2.0
Apparent Porosity              Max. % 19 21 21 22
Cold Crushing Strength  Min. MPa 50 50 48 45
Refractoriness under load Min. oC 1520 1500 1480 1460
Bulk Density Min. g/cm 3 2.75 2.65 2.60 2.55
Refractoriness Min. oC 1780 1780 1760 1760
Linear Charge after reheating 1500 oC2h % 0 - -0.1 0 - -0.2 0 - -0.2 0 - -0.2
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