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Soda-proof heat insulation firebrick

Soda-proof heat insulation firebrick

 

Through improvement of the microstructure of products. The soda-proof firebrick takes reaction with basicity oxide in the course of using and generate a kind of high viscosity glass, which covers on the surface of firebrick to stop the pores and the permeation of basic slag, in order to resist the basicity erosion. The product has stable volume, good erosion-resistance and permeation-resistance. They can be widely used in the positions of pre-heater, decomposing stove and pipe of cement kiln.

 

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 Items

Soda-proof firebrick

Light weight refractory lay-black of ceramsite concrete

High strength type

Heat insulation type

GE

GF

GL

Al2O3    %                           

2530

2530

 

 

 

SiO2    %                            

6570

6570

 

 

 

Fe2O3    %             not more than

2.0

2.0

 

 

 

Refractoriness   not less than

1650

1650

 

 

 

BD g/cm3              not less than

2.25

1.65

1.55

1.55

1.65

AP  %                not more than

20

32

 

 

 

PLC %                 not more than

 

 

1200×3h  1.5

1300×3h  1.5

1400×3h  1.5

CCS Mpa               not less than

60

18

30

30

40

0.2MPa RUL          not less than

1300

1250

 

 

 

110after drying MOR Mpa                 not less than

 

 

3.0

3.0

3.5