Configuration Diagram of Refractories

Zhengzhou Rongsheng

Steel Industry

  • Refractories for Steel-making Furnace :

    Castables and Precast Blocks for EAF Roof Castables and Precast Blocks for LF Roof
  • Refractories for Ladle & Tundish :

    Dry Ramming Mix for EAF Bottom Dry Ramming Mix for Intermediate Frequency Furnace
  • Functional Refractories for Con-Casting :

    Castables Series for Ladle Lining Shaped Refractories for Ladle Dry Vibrating Mix for Tundish Coatings Series for Tundish Castable for Permanent Lining of Tun dish
  • Functional Refractories far Con-Casting :

    Slag Tile(Weir) and Impact Pad Shroud, Monolithic Stopper and Submerged Entry Nozzle for Billet, Slab, Thin Slab Continuous Casting) Zirconia Metering Nozzles for Billet Continuous Casting
  • Refractories for Heating Furnace :

    Refractory Castables for Working Lining of Heating Furnace Plastic Refractories for Heating Furnace Light-weight Insulating Castables for Heating Furnace Gunning Mix for Converter and Ladle Precast Chrome Corundum Abrasion-resistant Block for Heating Furnace Refractory Fiber Products for Heating Furnace (Felt, Blanket, Board and Module)
  • Refractories for Converter :

    Magnesium Carbon Brick Tapping Hole Block Overall Steel Outlet Gunning Mix for Tapping Hole Magnesium Gunning Material Repair Refractory for Converter Filling Material for Converter Steel Outlet Cold Joint Material for Converter Hot Repair Material for Converter

Magnesia carbon brick :

Magnesia carbon bricks are made of high melting point alkaline oxide magnesium oxide (melting point 2800℃) and high melting point carbon materials that are difficult to be infiltrated by slag as raw materials, adding various non-oxide additives and combining them with carbon binders Do not burn carbon composite refractories. Magnesia carbon brick has good high temperature resistance, strong slag resistance, good thermal shock resistance and low high-temperature creep.

Item MT-8 MT-12 MT-14
MgO,% ≥ 82 78 76
C,% ≥ 8 12 14
Apparent Porosity,% ≤ 6 5 4
Bulk Density,g/cm3 2.98 2.95 2.93
Cold Crushing Strength,MPa ≥ 30 35 40
Modules of Rupture(1400*0.5h),MPa ≥ 5 8 12

 

Magnesia brick :

Magnesia bricks have periclase as the main crystal phase, which is the main product in alkaline refractories. It has high refractoriness and good resistance to iron oxides, alkaline slag and high-calcium fluxes.

Item MZ-92 MZ-95 DMZ-97 DMZ-98
MgO,% ≥ 92 95 96.8 97.5
SiO2,% ≤ 3 2.5 1.5 1.0
CaO,% ≥ 2.5 2.0 1.2 1.2
Apparent Porosity,% ≤ 18 18 16 15
Bulk Density,g/cm3 2.92 2.95 3.10 3.15
Cold Crushing Strength,MPa ≥ 55 60 70 80
0.2MPa  R-U-L ,℃ ≥ 1550 1600 1700 1700
thermal shock resistance ,1100℃ ≥ 10 10 8 8

 

Silica Bricks :

Silica brick is made of quartz stone material, the content of SiO2 is above 93%,it has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C,RUL is beyond 1620°C.

Item RG-95
Furnace Wall Bricks Checker Brick
Chemical composition SiO2 ≥95
Al2O3 ≤1.0
Fe2O3 ≤1.2
Apparent Porosity % ≤22 ≤24
Real Density g/cm3 ≤2.33 ≤2.34
Cold Crushing Strength MPa ≥40 ≥30
0.2MPa  R-U-L ℃ ≥1650
Residual quartz % ≤1.5
Creep Rate %   0.2MPa 1500℃ 0h~50h ≤0.8
Thermal expansion rate % 1000℃

 

≤1.28

 

Unshaped Refractory For Steel Industry :

Item Index
Aluminum Magnesium Spinel Castable Corundum spinel Castable Low Cement High Alumina Castable Mullite Artesian Castable
MgO,% ≥ 13 3.5 - -
Al2O, % ≥ 70 92 70 75
Fe2O, % ≤ - - 1.2 1.0
Real Density,g/cm3 2.8 3.1 2.8 2.75
Modules of Rupture,MPa ≥ 6 9.2 1400℃*0.5h 9 10
Cold Crushing Strength,MPa ≥ 42 64 65 100
Linear Change Rate,% 1500℃*3h ±1.0 0~0.5 ±0.6 0~-0.5
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