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REFRACTORIES
MAYLONG RESOURCES

Magnesia Carbon Brick
MLMC8 MLMC10 MLMC14 MLMC18 MLMC20 Brand
A B C A B C A B C A B C A B C
MgO (%) 82 80 80 80 78 78 78 77 77 74 73 73 72 71 71 Chemical
Analysis C (%) 8 8 8 10 10 10 14 14 14 18 18 18 20 20 20
Apparent Porosity (%) 4 5 6 4 5 6 4 5 5 4 5 5 4 5 5
Bulk Density (g/cm3) 3.05 3.03 3.01 2.98 2.96 2.94 2.95 2.94 2.92 2.90 2.88 2.85 2.88 2.85 2.85
Cold Crushing Strength (MPa) 40 40 40 40 40 35 40 40 35 40 35 35 35 30 25
Hot Bending Strength
at 1400C x 30 min (MPa) 6 5 4 6 5 4 12 8 6 12 8 6 12 8 6
Dalian F.T.Z. Maylong Resources Co., Ltd Unit 1-7-2, 122 Tongtai Street, Shahekou District, Dalian116021, China. Tel: (86) 411 8432 4343/8432 4848 Fax: (86) 411 8432 8822 Email: [email protected] Website: www.refractorychina.com

Magnesia Bricks
SiO2 Al2O3 Fe2O3 CaO MgO C.C.S A.P. B.D. Refractoriness
under Load Thermal Shock
Resistance Brand (%) (%) (%) (%) (%) (MPa) (%) (g/cm3) ( ) (950 )
MLFMB98 0.6 0.1 0.1 1.0 98 90 14 3.1 1700 15
MLFMB97 0.8 0.2 0.8 1.0 97 90 15 3.1 1700 15
MLFMB96 1.5 0.3 1.0 1.2 96 90 16 3.05 1680 10
Fused Magnesia Brick
MLFMB95 2.0 0.4 1.2 1.5 95 70 16 3.0 1650 10
MLDMB97 0.8 0.5 0.5 1.2 97 90 16 3.0 1700 10
MLDMB95 2.0 0.5 0.7 1.5 95 70 16 2.95 1650 10 Dead-burnt Magnesia Brick
MLDMB92 4.0 0.7 1.0 2.0 92 60 18 2.90 1550 ---

Magnesia Chrome Bricks
SiO2 Al2O3 Fe2O3 CaO MgO Cr2O3 C.C.S A.P. B.D. Refractoriness
under Load Brand (%) (%) (%) (%) (%) (%) (Mpa) (%) (g/cm3) ( )
MLFRMCr24 1.0 8.0 10.0 1.0 55 24 60 16 3.20 1750
MLFRMCr20 1.2 7.0 8.5 1.3 62 20 60 16 3.20 1700 Fused Re-bonded Magnesia Chrome Brick
MLFRMCr16 1.5 7.0 8.0 1.5 66 16 60 16 3.15 1700
MLSRMCr20 1.2 8.0 9.0 1.5 60 20 50 16 3.20 1700
MLSRMCr18 1.2 8.0 8.0 1.5 63 18 55 16 3.20 1700
MLSRMCr16 1.2 7.0 8.0 1.5 66 16 60 16 3.18 1700 Semi-Rebonded Magnesia-Chrome Brick
MLSRMCr14 1.2 6.0 7.0 1.5 70 14 65 16 3.18 1700
MLDBMCr16 1.5 5.0 8.0 2.0 67 16 50 17 3.10 1700
MLDBMCr14 1.5 4.0 7.0 2.0 71 14 55 17 3.05 1700
MLDBMCr12 1.5 4.0 6.0 2.0 74 12 60 17 3.05 1700 Direct-bonded Magnesia Chrome Brick
MLDBMCr8 1.5 3.0 5.0 2.0 80 8 65 17 3.0 1650
MLNMCr14 4.0 6.0 8.0 2.0 65 14 45 19 3.0 1600
MLCMCr12 4.0 6.0 7.0 2.0 68 12 50 19 3.0 1600 Common Magnesia Chrome Brick
MLCMCr8 4.0 5.0 6.0 2.0 74 8 55 18 3.0 1580

Magnesia Alumina Brick and Magnesia Alumina Spinel Brick
Chemical property (%)
Item MgO
Al2O3
SiO2
Fe2O3
Apparent porosity( %)
Bulk density (g/cm3)
Cold crushing strength (Mpa)
Refractoriness under load
(0.2Mpa 0C)
Thermal shock resistances 1100 0C
(Water Cooling)
Magnesia Alumina Brick
MLHML-80A 80 6-9 2.0 - 17 2.95 39.5 1600 3
MLHML-80B 80 6-9 3.5 - 17 2.95 29.4 1580 3
MLHML-85 85 8 2.0 - 18 3.05 40 1650 5
Magnesia Alumina Spinel Brick
MLHMJ-75A 75 13 0.6 0.8 17 2.95 45 1700 10
MLHMJ-75B 75 13 1.0 0.8 17 2.95 45 1700 10
MLHMJ-80 80 9 1.5 0.8 17 2.95 45 1700 10
MLHMJ-85A 85 9 0.6 0.7 16 2.95 45 1700 12
MLHMJ-85B 82 9 2.5 0.8 17 2.95 40 1700 10
MLHMJ-93A 88 5 0.6 0.7 16 2.95 45 1700 12
MLHMJ-93B 85 5 2 0.8 17 2.95 40 1700 10
MLHMJ-95A 93 3 0.6 0.7 16 2.95 45 1700 12
MLHMJ-95B 90 3 2.5 0.8 17 2.95 40 1700 10

High Alumina Brick
Brand MLHA-80a MLHA-75a MLHA-65a
Application Steel-smelting Electric Furnace Roof
Al2O3 (%) 80 --- 65
Refractoriness () 1790 1790 1790
Refractoriness under Load 0.2 Mpa () 1550 1530 1520
1550 x 2h (%) 0.0 /- 0.3 0.0 /- 0.4 --- Reheat Linear Change
1500 x 2h (%) --- --- 0.0/- 0.4
Furnace-top (%) 19 19 22 Apparent Porosity
Arch-type (%) 21 21 23
Cold Crushing Strength (Mpa) 78.5 68.6 58.8
Brand MLHA-80b MLHA-65b
Application Blast Furnace
Al2O3 (%) 80 65
Fe2O3 (%) 2.0 2.0
Refractoriness () 1790 1790
Refractoriness under load 0.2 Mpa () 1550 1500
Reheat Linear Change 1500 x 2h (%) 0.0/- 0.3 0.0/- 0.2
Apparent Porosity (%) 18 19
Cold Crushing Strength (Mpa) 78.5 58.8
Brand MLHA-65c MLHA-55 MLHA-48
Application Hot Stove Oven
Al2O3 (%) 65 55 48
Refractoriness () 1790 1770 1750
0.2 Mpa Load Softening Point () 1500 1470 1420
1550 2h (%) +0.1/ - 0.4 +0.1/ - 0.4 --- Reheat Linear Change
1450 2h (%) --- --- +0.1/ - 0.4
Apparent Porosity (%) 24 24 24
Cold Crushing Strength (Mpa) 49.0 44.1 39.2

Anti-spalling High Alumina Bricks

Alkali-resistant Bricks

Corundum Brick
Brand MLCR-98 MLCR-95 MLCR-90 MLCR-80 MLCR-85
AL2O3 (%) 98.5 95 90 80 85
Cr2O3 (%) --- --- --- --- 8
SiO2 (%) 0.3 3.0 9.0 18 0.2
Fe2O3 (%) 0.2 0.2 0.5 0.5 0.2
Chemical Analysis
R2O (%) 0.3 0.6 0.6 0.4 0.5
Bulk Density (g/cm3) 3.0 2.9 2.9 2.7 3.1
C.C.S (Mpa) 75 100 100 60 80
Refractoriness () 1790 1790 1790 1790 1790
Refractoriness
under load of 0.2MPa () 1700 1650 1650 1700 1700
Reheat Linear Change (%) 16003h
0.2
16003h
0.2
16003h
0.2
16003h
0.3
16003h
0.2
Thermal Shock Resistance
1100water cooling (times) 6 10 10 20 15

Clay Brick
Brand MLCL-42 MLCL-40
Al2O3 (%) 42 40
Refractoriness () 1750 1730
Refractoriness under load 0.2 Mpa () 1400 1350
Reheat Linear Change 1400 x 2h (%) 0.1/- 0.4 0.1/- 0.5
Apparent Porosity (%) 22 24
Cold Crushing Strength (Mpa) 29.4 24.5
Light Corundum Mullite Brick
Brand MLCM-66 MLCM-85
Al2O3 (%) 66 85
Bulk Density (g/cm3) 1.3 1.5-1.7
Cold Crushing Strength (MPa) 15 20
Max. Working Temp. () 1600 1700-1750
Thermal Conductivity hot face 1000 (W/m.k) 0.6 1.0
Reheat Linear Change 1600 x 3h (%) 0.2 0.2

Bubble Alumina Brick
Band Item Unit
MLQ-1.5
MLQ-1.2
MLBQ-1.5
MLQ-1.7
Apparent Porosity % 58 62 60 58
Bulk Density g/cm3 1.5max 1.2 max 1.5 max 1.7 max
Cold Crushing
Strength Mpa 16min 3min 12min 15min
Refractoriness under
load 0.1MPa KD 1650min. 1650min. 1700min. 1700min
Thermal Conducivity
Hot face 1000 C W/m.k 1.2max 0.95max 1.05max 1.15max
Refractoriness C 1800min. 1800min. 1800min. 1800min.
Al2O3 % 84 min. 98.5min. 98.5min. 98.5min.
SiO2 % 0.8 max 0.3 max 0.3 max 0.3 max
Fe2O3 % 15 max 1.0 max 1.0 max 1.0 max
Dalian F.T.Z. Maylong Resources Co.,Ltd Unit1-7-2, 122 Tongtai Street, Shahekou District, Dalian, China Tel:(86)411 84324343 Fax:(86)411 84328822 [email protected]
www.refractorychina.com

Low Porosity Clay Brick
Brand MLDN-10 MLDN-12 MLDN-13 MLDN-15
Al2O3 (%) 50 45 45 41
Chemical Analysis
Fe2O3 (%) 1.0 1.2 1.5 1.5
Refractoriness () 1750 1750 1750 1740
Refractoriness under load of 0.2 MPa () 1530 1500 1480 1470
-0.2 -0.2 -0.2 -0.2 Reheat linear change 1450 3H 00 2H
(%)
+0.00 +0.00 +0.00 +0.00
Apparent Porosity (%) 8-10 12 13 15
Cold Crushing Strength (MPa) 90 85 70 60
Bulk Density (g/cm3) 2.5 2.45 2.4 2.3

Silica Bric

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