Magnesia Refractories

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Product Description:

Magnesia chromite brick Specifications

1.High refractoriness2000,
2.excellent anti-oxidation,
3.high strength
4.perfect thermal Stability;

Magnesia chromite brick Application:

1. Used for the roof to all kinds of steelmaking furnace ;

2. RH, VOD, AOD, and other refining installations;

3. Building industry, glass furnace, cement rotary kiln etc.

Magnesia chromite brick Features:

1,Outstanding ability to form stable protective coating

2,High flexibility

3,High refractoriness

4,Low thermal conductivity

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Magnesia-Chrome Brick

Brand Specification

QMGe 8A

QMGe 8B

QMGu 12A

QMGe 12B

QMGe I6A

QMGe 16B

QMGe 20A

QMGe 20B

QMGe 22

MgO %≥

65

60

60

55

50

45

45

40

46

Cr2O3 %≥

8

8

12

12

16

16

20

20

22

Apparent Porosity%≤

20

20

20

20

20

23

20

23

20

Cold Crushing Strength Mpa ≥

35

30

35

30

35

30

35

30

35

Refractoriness Under Load C ≥

1620

1550

1620

1580

1620




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Q:How much is magnesium chrome brick a ton?
Magnesium chrome bricks according to physical and chemical indicators in order to know the specific price, the production of magnesia chrome brick place a lot
Q:Magnesia chrome brick
Magnesia chrome brick to Magnesium Oxide (MgO) and chromium oxide (Cr2O3) as the main ingredient, refractory periclase and spinel as main mineral components of products. The bricks have high refractoriness, high temperature strength, strong resistance to alkaline slag, good thermal stability, and certain adaptability to acid slag. The main raw materials for making magnesia chrome bricks are sintered magnesia and chromite. The purity of magnesia raw materials should be as high as possible, chrome iron ore chemical composition requirements: Cr2O3:30 - 45%, CaO = 1 ~ 1.5%.
Q:What is the difference between magnesia chrome brick and direct bonded magnesia chrome brick?
The performance of direct bonding magnesia chrome brick is better than that of common magnesia chrome brick.
Q:What are the main raw materials of magnesia chrome bricks?
Magnesium alloys are alloys based on magnesium and other elements. Its characteristics are: small density (1.8g/cm3 magnesium alloy or so), high specific strength, high modulus of elasticity, good heat dissipation, good shock resistance, greater impact load capacity than aluminum alloy, good resistance to organic and alkaline corrosion. The main alloying elements are aluminum, zinc, manganese, cerium, thorium, and a small amount of zirconium or cadmium.
Q:What is a half combination of magnesia chrome bricks?
Opacifying particles as periclase spinel crystal structure, fully developed, as part of account of solution structure and matrix.
Q:Magnesium chrome brick price?
Dashiqiao magnesium brick factory of China Building Materials Academy is a joint stock company invested, constructed and managed by China Building Materials Academy.The plant was built in 1992, officially put into operation in 1993, covers an area of 89 thousand square meters, has a long 118 meters, an annual output of 30 thousand tons of high temperature tunnel kiln production line. The group has 1200 employees, 6 senior engineers, more than 20 engineers and technicians, and has strong technical force. Group's total assets of 5.5 million, with an annual output value of 600 million. Profit and tax 65 million yuan.
Q:What are the environmental hazards of magnesia chrome refractory bricks?
Nowadays, the use of magnesia chrome bricks, especially in cement kilns in the construction industry, has been required to be free of chromium, and the cement products shall not be tested with chromium.
Q:What are the differences between magnesium chrome bricks, such as direct bonding, re bonding, semi bonding, CO sintering and chemical bonding? Hope expert advice..
Direct bonded magnesia chrome brickThe loose effect caused by the expansion of spinel when the oxide of magnesia brick is directly reacted with the oxide of iron can also be used to make magnesia chromite brick with synthetic common sintered material. In addition, there are non burned magnesia chrome bricks, for example, non burned magnesia chrome bricks combined with inorganic magnesium salt solutions. The unfired magnesia chrome brick has the advantages of simple production process, low cost and good thermal stability, but the strength of the high temperature is far less than that of the burnt brick. In the late 50s, a so-called "direct bonding" magnesia chrome brick was developed. The characteristics of this brick raw material is pure, high firing temperature, periclase and spinel phase with high temperature directly, silicate and other low melting point phase for island distribution, therefore, significantly improve the high temperature strength and slag resistance of brick.
Q:How many kinds of refractory bricks are there?
Dolomite brick: coating performance, good erosion resistance, but how many bricks f-CaO, yasumizu, it is difficult to transport and storage, production with less.
Q:What are the types of magnesia chrome bricks for industrial use?
It is possible to judge by the concrete kiln. The magnesium chrome bricks produced by real gold company are very good. Our factory purchased them the year before last, and their technicians were very professional, and gave us very good suggestions.

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