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Refractory used in carbon roasting furnaces

Refractory used in carbon roasting furnaces

 

Specific clay or high aluminum firebricks are under special process and have good properties of high strength, good thermal shock resistance and high refractoriness under load, therefore they can meet the working condition of carbon roasting kilns. 

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Specific fireclay brick

Specific high-Al firebrick

 
 

Al2O3          %                       

42-53

65

 

Fe2O3          %                                     not more than

1.5

1.2

 

CaO+Mgo      %                                   not more than

0.7

0.7

 

Na2O+Ka2O    %                                   not more than

0.8

0.8

 

Refractoriness                                     not less than

1750

1790

 

0.2MPa  RUL                                     not less than

1480

1600

 

BD g/cm3                                           not less than

2.3

2.5

 

AP  %                                            not more than

16

19

 

CCS Mpa                                           not less than

45

50

 

MOR Mpa                                          not less than

1200

1350

1350

 

10

4

6

 

High temperature creep % 0.2MPa                      not more than

1280×50h

1350×50h

 

0.38

0.40

 

PLC %

1450×2h

1500×2h

 

0.1-0.3

0.1-0.2

 

Themal linear expansion %                            not more than

1000

1000

 

0.65

0.70