Magnesia Chrome Brick

Short Description:

Magnesia chrome brick is made of high-grade magnesite clinker and chromium oxide as raw materials, through high-pressure molding and high-temperature firing, the maximum allowable ambient temperature is 1700°C. Magnesia chrome brick has good heat peeling resistance, high alkali corrosion resistance and high thermal shock resistance characteristics, and it is environmentally friendly and has a long service life.


Product Detail

PRODUCTIVE PROCESS

PACKING AND SHIPPING

Product Tags

Description


Magnesia chrome brick is made of high-grade magnesite clinker and chromium oxide as raw materials, through high-pressure molding and high-temperature firing, the maximum allowable ambient temperature is 1700°C. Magnesia chrome brick has good heat peeling resistance, high alkali corrosion resistance and high thermal shock resistance characteristics, and it is environmentally friendly and has a long service life.

Features

High strength and high refractoriness / High alkali resistance

High thermal shock resistance /Good crack resistance

Good resistance to acid residue

Application

Magnesium chrome bricks are mainly used in the metallurgical industry, such as the construction of open hearth furnace roofs, electric furnace roofs, external refining furnaces and various non-ferrous metal smelting furnaces. The high-temperature part of the wall of the ultra-high power electric furnace is made of fused-cast magnesia-chrome bricks, the high-erosion area of the refining furnace outside the furnace is made of synthetic materials, and the high-erosion area of the non-ferrous metal flash smelting furnace is made of fused-cast magnesia-chrome bricks and synthetic materials. Made of magnesia chrome bricks. In addition, magnesia-chrome bricks are also used in the burning zone of cement rotary kilns and regenerators of glass kilns.

Physical And Chemical Indicators

Description

DN-17

DN14

DN12

SK34

SK33

SK32

Refractoriness (SK)

34

34

34

34

33

32

Bulk density (g/cm3)

2.25

2.34

2.40

2.20

2.17

2.15

Cold Crushing Strength (MPa)

50

65

70

40

35

30

Apparent Porosity(%)

17

14

12

23

24

26

Permanent linear change @1400ºC*2hrs(%)

±0.1~-0.2

±0.1~-0.2

±0.1~-0.2

±0.3

±0.5

±0.5

Thermal Linear expansion @1000ºC

0.6

0.6

0.5

0.6

0.6

0.6

Refractoriness under Load (ºC)@0.2MPa

1430

1470

1500

1350

1300

1250

Chemical Analysis (%) Al2O3

42

45

46

42

38

35

Fe2O3

1.7

1.5

1.3

2.0

2.2

3.0


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  • 1.Raw material quality control including physical and chemical testing.           
    2.Crushing and grinding of bulk raw materials.
    3. According to customer data sheet required to mixing Raw Material.
    Pressing or shaping the green brick depend on different raw material and brick shape.
    4.Dry the bricks at dryer kiln.
    5.Put the bricks into the tunnel kiln to burning by higher temp from 1300-1800 deg.
    6.The quality control department will inspect the finished refractory bricks random.

    Packaging  according to safety sea-exporting packing Standard
    Dispatch : loading the finished packing material at factory by container Door toDoor   
    By sea fumigated wooden pallet + plastic belt  + plastic film wrap.

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