Magnesia bricks

Features:

  1. Excellent resistance to alkali steams and slags
  2. Good thermal stability

Applications: Regenerator of glass melter, cement kiln, non-ferrous Metal smelting furnaces, electric steel-making furnaces, open hearth furnaces, converters and iron mixing furnaces

Items:

  1. Magnesite Bricks
  2. Magnesia Alumina Bricks
  3. Magnesia Zircon Bricks
  4. Magnesia Chrome Bricks  
  5. Magnesia-Alumina Spinal Bricks

Category:

The Magnesite refractory brick, Magnesia alumina spinel brick, Magnesia zirconium brick, and Magnesia chrome brick have properties of good corrosion resistance to alkali steam and alkaline slag. It can be used in alkaline material contact areas, like regenerators of glass kilns, cement kilns, non-ferrous Metal smelting furnaces, electric steel-making furnaces, open hearth furnaces, converters, and iron mixing furnaces, etc.

Technical Data Sheet:  

Index / Product Unit Magnesite Bricks Magnesia Alumina Bricks Magnesia Zircon Bricks Magnesia Chrome Bricks Magnesia-Alumina Spinal Bricks
MZ-92 MZ-95 MZ-97 MZ-98 MLZ-80A MLZ-80B YMZ-A YMZ-B DMC-12 DMC-8 DMC-4 MLJ-80 MLJ-75 MLJ-70
MgO≧ % 92 95 97 98 80 80 77 73 70 73 80 80 75 70
CaO ≦ % 2.5 2.0 1.5 1.0 - - - - - - - - - -
Al2O3 % - - - - 5-10 5-10 - - - - - 8-20 8-20 8-20
SiO2 % 4.0 2.0 1.2 0.6 - - - - 2.0 1.8 1.8 - - -
ZrO2 % - - - - - - 12 12 - - - - - -
Cr2O3 % - - - - - - - - 12 7 2 - - -
Apparent Porosity   ≦ % 18 18 17 17 18 20 16 18 18 18 18 17 19 20
Cold Crushing Strength                ≧ Mpa 60 60 60 60 40 30 70 65 45 50 55 40 40 40
Refractories under Load( 0.2Mpa)≧ 1580 1650 1700 1700 1600 1580 1660 1600 1650 1650 1600 1700 1650 1600
Reheating Linear Change(1650℃*2h) % +0
-0.5
+0
-0.3
+0
-0.2
+0
-0.2
- - - - - - - - - -
Bulk Density         ≧ g/cm3 2.9 2.92 3.0 3.02 2.88 2.85 3.1 3.0 3.0 2.95 2.90 2.9 2.88 2.85
Thermal shock resistance 1100℃ water cycle - - - - 4 4 - - 5 5 5 10 10 8

Note: All chemical-physical data are obtained based on the corresponding refractory bricks of standard size.