• ascending-pipe-pre-cast-refractory
  • ascending-pipe-pre-cast-refractory

Ascending Pipe Pre-cast Refractory for Coke Oven

  • ω(Al2O3) /% ≥:50
  • ω(MgO) / %≥:2.5
  • Apparent Porosity /%≤:28
  • Bulk Density /g/ cm3 ≥:2.1
  • Cold Crushing Strength /MP≥:40
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Introduction
The lining of ascending pipe upper structure is made of monolithic casting refractory, bottom structure is made of high temperature glazed refractory.

 

Item

Glazed

ω(Al2O3) /%                  

50

ω(MgO) / %                  

2.5

Apparent Porosity /%          

28

Bulk Density /g/ cm3           

2.1

Cold Crushing Strength /MP    

40

Rupture Strength  /MP        

4

Thermal Conductivity /W/

(m·K)1000 (Heating side)    

1.2

Thermal Shock Resistance

(1100, water cooling) /cycle  

50

 Item

Normal

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 /W/

(m·K)1000 (Heating side)   

1.2

Thermal Shock Resistance

(1100, water cooling) /cycle  ≥   

50

 

 

 

 

















 Comparison between new type and traditional type

New Type

Traditional Type

Smooth surface, less joints, less carbon and dust deposition

Traditional ascending pipe is installed by refractory bricks, after installation, the surface is rough and has many joints. It is easy to accumulate coal and dust.

Simple structure

New type consists of three parts: glazed base, glazed bottom pipe, monolithic casting upper pipe.

Complicated structure

Easy to install the ascending pipe, using the bolts to link the three parts.

Complicated installation

Reduce the repair times and save the cost.

Frequent repair and high cost

Long working life

Short working life

Solve the gas leakage problems, reduce the environment pollution and heat dissipation, lead to energy saving.

Long time mechanical operation and chemical damage on the joints, leading the joints to become bigger. Gas leakage and environment pollution.

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