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    Steel Making - Arc Furnace

Arc Furnace Refractory - Working Lining

Working Lining

Magnesia Carbon Bricks

Resin Bonded
Pitch Bonded
resin and pitch bonded
Dead Burned Magnesia
Electro Fused Magnesia
E.F.Large Crystal Magnesia
resin and pitch bonded

Magnesia-carbon
RM 9605 RM 9610 RM 9615 RM 9615 A RM 9705 RM 9710
Chemical
composition*
MgO [%] 95,5-96,5 95,5-96,5 95,5-96,5 95,5-96,5 96,5-97,5 96,5-97,5
CaO [%] 1,5-2,0 1,5-2,0 1,5-2,0 1,5-2,0 1,1-2,0 1,1-2,0
SiO2 [%] 0,9-1,2 0,9-1,2 0,9-1,2 0,9-1,2 0,4-0,8 0,4-0,8
Fe2O3 [%] 0,5-0,9 0,5-0,9 0,5-0,9 0,5-0,9 0,4-0,8 0,4-0,8
Al2O3 [%] 0,3-0,5 0,3-0,5 0,3-0,5 0,3-0,5 0,2-0,4 0,2-0,4
C [%] 4,0-6,0 9,0-11,0 14,0-16,0 14,0-16,0 4,0-6,0 9,0-11,0
Physical
properties
Apparent Porosity [%] ≤ 4,5 ≤ 4,0 ≤ 4,0 ≤ 4,0 ≤ 4,0 ≤ 4,0
Bulk density [g/cm3] 3,00-3,05 2,98-3,03 3,05-3,10 3,00-3,15 3,00-3,15 3,00-3,15
Cold Crushing Strenght [MPa] ≥ 35 ≥ 35 ≥ 40 ≥ 40 ≥ 40 ≥ 40
Characteristics are intended as a guideline and are not binding. Determined in compliance with international standards in effect.

Magnesia-carbon
RM 9715 RM 9715 A RM 9810 RM 9815 RM 9815 A RM 9815 2A
Chemical
composition*
MgO [%] 96,5-97,5 96,5-97,5 97,5-98,5 97,5-98,5 97,5-98,5 97,5-98,5
CaO [%] 1,1-2,0 1,1-2,0 0,9-1,5 0,9-1,5 0,9-1,5 0,9-1,5
SiO2 [%] 0,7-1,0 0,7-1,0 0,5-0,8 0,5-0,8 0,5-0,8 0,5-0,8
Fe2O3 [%] 0,4-0,8 0,4-0,8 0,4-0,7 0,4-0,7 0,4-0,7 0,4-0,7
Al2O3 [%] 0,2-0,4 0,2-0,4 0,1-0,3 0,1-0,3 0,1-0,3 0,1-0,3
C [%] 14,0-16,0 14,0-16,0 9,0-11,0 14,0-16,0 14,0-16,0 14,0-16,0
Physical
properties
Apparent Porosity [%] ≤ 4,5 ≤ 4,0 ≤ 4,0 ≤ 4,0 ≤ 4,0 ≤ 4,0
Bulk density [g/cm3] 3,00-3,05 2,98-3,03 3,05-3,10 3,00-3,15 3,00-3,15 3,00-3,15
Cold Crushing Strenght [MPa] ≥ 35 ≥ 35 ≥ 40 ≥ 40 ≥ 40 ≥ 40
Characteristics are intended as a guideline and are not binding. Determined in compliance with international standards in effect.

 

Arc Furnace Refractory - Delta Roof

Alumina Based Carbon Bricks

Chemically Bonded
chemically bonded
Bauxite
Corundum
bauxite	corundum

Fired MgO Alumina Chemically bonded alumina
RM M90 RM 42 RM 62 RM 80 CRM 90 CRM 90/CR
Chemical
composition*
MgO [%] 89,0-91,0 - - - - -
CaO [%] 1,5-3,5 - - - - -
SiO2 [%] 3,0-5,0 48,0-53,0 30,0-32,0 12,0-15,0 7,0-9,0 6,0-8,0
Fe2O3 [%] 0,8-1,5 1,8-2,0 1,8-2,0 1,9-2,1 1,7-2,0 1,6-1,8
Al2O3 [%] 0,3-0,6 42,0-45,0 61,0-63,0 78,0-82,0 84,0-86,0 83,0-85,0
TiO2 [%] - 2,3-2,7 2,5-2,8 2,6-3,2 2,6-3,2 2,3-2,8
Cr2O3 [%] - - - - - 1,9-2,1
Physical
properties
Apparent Porosity [%] ≤ 20,0 19,0-23,0 20,0-24,0 20,0-24,0 16,0-18,0 16,0-18,0
Bulk density [g/cm3] 2,90-2,95 2,10-2,20 2,35-2,45 2,55-2,70 2,80-2,90 2,80-2,90
Cold Crushing Strenght [MPa] ≥ 50 25-40 45-65 50-70 85-95 85-95
Characteristics are intended as a guideline and are not binding. Determined in compliance with international standards in effect.

 

Arc Furnace Refractory - Safety Lining

Safety Lining

Fired Magnesia Bricks

Fired Magnesia
fired magnesia
Caustic Calcined Magnesia
caustic calcined magnesia

Dolomite Spinel Fired MgO Alumina
RM DOL E RM LMT65 RM LMT80 RM M90 RM 42 RM 62 RM 80
Chemical
composition*
MgO [%] 37,0-37,5 ≥ 19,0 ≥ 8,0 89,0-91,0 - - -
CaO [%] 56,0-58,0 ≤ 0,5 ≤ 0,3 1,5-3,5 - - -
SiO2 [%] 1,0-1,2 ≤ 7,0 ≤ 3,0 3,0-5,0 48,0-53,0 30,0-32,0 12,0-15,0
Fe2O3 [%] 0,7-1,1 ≤ 2,0 ≤ 0,8 0,8-1,5 1,8-2,0 1,8-2,0 1,9-2,1
Al2O3 [%] 0,2-0,6 ≥ 63,0 ≥ 78,0 0,3-0,6 42,0-45,0 61,0-63,0 78,0-82,0
TiO2 [%] - ≤ 2,0 ≤ 1,5 - 2,3-2,7 2,5-2,8 2,6-3,2
C [%] 2,0-3,0 8,0-10,0 7,0-9,0 - - - -
Physical
properties
Apparent Porosity [%] 4,0-5,0 ≤ 7,0 ≤ 4,0 ≤ 20,0 19,0-23,0 20,0-24,0 20,0-24,0
Bulk density [g/cm3] 2,90-3,00 3,05-3,10 3,25-3,30 2,90-2,95 2,10-2,20 2,35-2,45 2,55-2,70
Cold Crushing Strenght [MPa] ≥ 40 ≥ 40 ≥ 40 ≥ 50 25-40 45-65 50-70
Characteristics are intended as a guideline and are not binding. Determined in compliance with international standards in effect.