High Quality Precast Block Refractory Brick for Coke Oven

The pre-cast refractory block is made of composite ceramic material. Pre-cast refractory is shaped by high frequency vibration. The unformed material has low porosity, high density and good uniformity. There is crystalline ceramic refractory adhere the pre-cast surface, which have high strength, good abrasion resistance and corrosion resistance. It has been reduced the physical damage during the operation and tar and other chemicals erosion to the refractory.

Precast Block Characteristics:

1.Simple structure and easy to install.
2.Good integrity and impermeability.
3.Longer working life than the traditional one. 
4.Energy-saving and environment-friendly.

Precast Block Application:

The pre-cast refractory block is mainly used for the coke oven.

Precast Block Technical Data Sheet:
 

Item	Pre-cast Coke Door
ω Al2O3 (%)	≥50
ω MgO (%)	≥3
Apparent Porosity (%)	≤28
Bulk Density (g/cm3)	≥2.1
Cold Crushing Strength (MPa)	≥35
Rupture Strength (MPa)	≥4
Thermal Conductivity at 1000℃ (Heating Side)     [w/(m·k)]	≤1.2
Thermal Shock Resistance (1100℃, water cooling) (cycle)	≥ 50

 

Item	Glazed Coal-charging Hole & Bell Pre-cast Refractory
ω Al2O3 (%)	≥45
ω MgO (%)	≥2.5
Apparent Porosity (%)	≤28
Bulk Density (g/cm3)	≥2.1
Cold Crushing Strength (MPa)	≥40
Rupture Strength (MPa)	≥4
Thermal Conductivity at 1000℃ (Heating Side) [W/(m·K]	≤1.2
Thermal Shock Resistance (1100℃, water cooling) (cycle)	≥50

 

Item		Normal Coal-charging Hole & Bell Pre-cast Refractory
ω Al2O3 (%)		≥45
ω MgO (%)		≥2.5
Apparent Porosity (%)		≤28
Bulk Density (g/cm3)		≥2.1
Cold Crushing Strength (MPa)	110℃*24h After drying	≥35
	1350℃*3h After firing	≥40
Rupture Strength (MPa)	110℃*24h After drying	≥3
	1350℃*3h After firing	≥4
Thermal Conductivity at 1000℃ (Heating Side)   [w/(m·k)]		≤1.2
Thermal Shock Resistance (1100℃, water cooling) (cycle)		≥50

 

Item	Glazed Ascending Pipe Pre-cast Refractory
ω Al2O3 (%)	≥50
ω MgO (%)	≥2.5
Apparent Porosity (%)	≤28
Bulk Density (g/cm3)	≥2.1
Cold Crushing Strength (MPa)	≥40
Rupture Strength  (MPa)	≥4
Thermal Conductivity at 1000℃ (Heating Side)      [W/ (m·K)]	≤1.2
Thermal Shock Resistance (1100℃, water cooling) (cycle)	≥50

 

Item		Normal Ascending Pipe Pre-cast Refractory
ω Al2O3 (%)		≥50
ω MgO (%)		≥2.5
Apparent Porosity (%)		≤28
Bulk Density (g/cm3)		≥2.1
Cold Crushing Strength (MPa)	110℃*24h After drying	≥35
	1350℃*3h After firing	≥40
Rupture Strength (MPa)	110℃*24h After drying	≥3.5
	1350℃*3h After firing	≥4
Thermal Conductivity at 1000℃ (Heating Side)      [w/(m·k)]		≤1.2
Thermal Shock Resistance (1100℃, water cooling) (cycle)		≥50