Refractories for coking industry

Not formed

TU U 322-7-00190503-126-97 (change №№ 1-3)

Indicator name

Norm for a brand product

MDK-1

MDK-2

Mass fraction, %,


SiО2, not less

90

А12О3, in limits

3,5-5,0

2СО3, in limits

0,1-0,15

Refractory quality, 0С, not below

610

Weight losses when calcinating, % :

in limits

no more


0,9-1,7




2,0

Dampness, %, no more

5

Denseness, г/см3, in limits

2,53-2,59

2,55-2,59

Grain structure, % :


Pass through a grid № 2, not less

100

Pass through a grid № 1, not less

97

Pass through a grid № 02, in limits

65-80

Pass through a grid №  009 , in limits

45-60

45-65

property layings - thickness of a seam at spread of solution of a mertel the 105-110th, mm, in limits

3-5

Sulfur-sour aluminum*, %

0,1

-

* - it is entered in number of 0,1 % (over 100 %) at the consumer and to control isn't subject


 

Zone of regenerators

TU U 322-7-00190503-125-97 (change №№ 1-3).

Indicator name

Norm for a brand product

(others)

DK-1

DK-2

DK

Mass fraction SiO2, %, not less

94

94

94

Density, г/см3, no more

2.37

2.35

2.37

Strength at compression, Н/мм2, not less

20

20

20

Temperature of the beginning of a softening, 0С, not below

1620

1620

1650

Residual change of the sizes (growth) at temperature of 1450 wasps, % no more

0.4

0.3

0.4

Residual quartz, %, no more

-

6.0

-

 

Zone of slanting courses


Indicator name

Norm for a brand product

Hearth

Others

DK-1

DK-2

DK

DK-1

DK-2

DK

Mass fraction of SiO2, %, not less

94

94

94

94

94

94

Density, g/cm3, no more

2.37

2.35

2.37

2.37

2.35

2.37

Porosity open, %, no more

16

16

16

-

-

-

Strength at compression, N/mm2, not less

50

50

50

20

20

20

Temperature of the beginning of a softening, 0С, not below

1620

1620

1650

1620

1620

1650


Residual change of the sizes (growth) at temperature of 1450 wasps, %

no more


0.4

0.3

0.4

0.4

0.3

0.4

Residual quartz, %, no more

-

6.0

-

-

6.0

-

 

Zone of verticals


Indicator name

Norm for a brand product

The wall

The head

Others

DK-1

DK-2

DK

DK-1

DK-2

DK

DK-1

DK-2

DK

Mass fraction of SiO2, %, not less

94

94

94

94

94

94

94

94

94

Mass fraction of Fe2O3, %, no more

1.7

1.7

1.7

1.7

1.7

1.7

-

-

-

Density, g/cm3, no more

2.37

2.35

2.37

2.37

2.35

2.37

2.37

2.35

2.37

Porosity open, %,

no more

in limits


-

19-23


-

19-23


23

-



19-23



19-23



23



-



-



-

Strength at compression, H/mm2, not less

30

30

30

30

30

30

20

20

20

Temperature of the beginning of a softening, 0С, not below

1620

1620

1650

1620

1620

1650

1620

1620

1650

Residual change of the sizes (growth) at temperature of 1450  0С , % no more

0.4

0.3

0.4

0.4

0.3

0.4

0.4

0.3

0.4

Residual quartz, %, in limits

-

6.0

-

-

6.0

-

-

6.0

-