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Products details

Magnesite brick

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Features:
The alkaline refractory heat storage products of magnesium ferrite are partially prefabricated. The main minerals consist of magnesia, spinel and a small amount of silicate. The granule is the milky structure, and the spinel of magnesia is fully developed, and the matrix part is the metasomatic structure. The crystal is a kind of magnesia - prereactive magnesium iron sand directly combined with low-porosity products of the structure. The product composition is uniform, the performance is stable, has the high thermal conductivity, the super hot melt ratio, the lotus softness temperature and the high temperature mechanical strength, the alkali melting slag chemical erosion strength and so on characteristic.
Products:
It is widely applied to heat storage water heater, heat storage heater, regenerative dryer, heat storage and heating boiler, heat storage and heat storage boiler, super 10000V heat storage room grid and civil heat exchanger, etc.
Physical and chemical performance indicators:

             index

projects      

Magnesite brick

DMFe-82

DMFe-84

DMFe-86

DMFe-88

Chemical composition%

MgO

82.00

84.00

86.00

88.00

SiO2

4.40

4.20

4.00

3.80

CaO

2.30

2.20

2.10

2.00

Fe2O3

7~9

7~9

7~9

7~9

Bulk density(g/cm3)

2.85

2.85

2.90

2.95

cold crushing strength(MPa)

50

55

60

65

Change rate of reburn line%

1600℃

-1.15

-1.00

-0.90

-0.80

800℃

-

-

-

-

Thermal conductivity w.(m.k)-1

1000℃

/

/

/

/

100℃

/

/

/

/

Hot melt than j.(Kg.k) -1

1000℃

/

/

/

/

100℃

/

/

/

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