Fused-Rebonded Magnesia Chrome Bricks, Refractory Bricks

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Tianjin
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Min Order Qty:
1 m.t.
Supply Capability:
100 m.t./month

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Materials of Insulation Brick

Lightweight Clay

Lightweight High-alumina

Lightweight High-alumina

°C

1225

1300

1400

Operation Temp

Chemical

AI2O3%≥f

30

48

55

Composition

SiO2%≥





Fe2O3%≤

1.5

1.1

1


TiO2%≤


2

1


CaO%≤





Alikali %≤

1.5

1.5

1.5

g/cm3 Density

0.7

0.85

0.95

%> Apparent Porosity 

75

65

65

MPa ≥

1

1.5

2

Cold Compression Strength

%

1250°C/12h-1-0

1400°C/12h-1-0

1500°C/12h-1-0

Linear Change on Reheating

(0.02MPa)


Refractoriness under Load

0.2%°C≥

1150

1250

1380

2.0%°C≥

1200

1350

1470

5.0%°C≥

1250

1400

1510

Thermal Conductivity


20°C(W/mK)≤

0.17

0.3

0.4

800°C(W/mK)≤

0.25



1000°C(W/mK)≤


0.35

0.45






 

 



 

Product Description

The fused-rebonded magnesia chrome brick has high temperature resistance, good corrosion resistance, thermal shock resistance and bulk stability under high temperature etc .The fused-rebonded magnesia chrome brick is made with sintered magnesia and refractory level chrome ore as raw materials. The space between refractory grains is bonded with silicate.The refractoriness of magnesia chrome bricks are more than 2000°C,and the refractory under load is a above 1550°C.Good steady volume in high temperature , the performance of meeting sudden cold and sudden hot is better than magnesia bricks.


 The fused-rebonded magnesia chrome brick mainly used in metallurgy(open hearth,EAF), non-ferrous (metall-urgyfurnace ) , buildings and materials (cement rotary kiln,glass kiln) etc.

 



Fused-Rebonded Magnesia Chrome Bricks, Refractory Bricks

Fused-Rebonded Magnesia Chrome Bricks, Refractory Bricks

Fused-Rebonded Magnesia Chrome Bricks, Refractory Bricks


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Q:How much is magnesium chrome brick a ton?
The price of bricks in different places is not the same. The average price is about 3500 yuan
Q:Magnesia chrome brick
The fine powder compacts after calcination produced by magnesia - chrome ore grinding method, brick with magnesia coarse particles, are effective measures to eliminate the effect of loose. Compared with the common magnesia chrome brick, the magnesia chrome brick made by this method has lower porosity, higher compressive strength, higher softening temperature and higher flexural strength. Compacts with chrome magnesite powder, magnesia chrome brick by synthetic magnesia chrome sand made of high-temperature calcination, slag resistance and high temperature strength are better than other magnesite chrome brick.
Q:What is the difference between magnesia chrome brick and direct bonded magnesia chrome brick?
The magnesium chromium brick with the direct bonded magnesia chrome brick is different: 1 with the purity of magnesia (raw materials) 2: the sintering temperature of common magnesia chrome brick sintering temperature at 1550 DEG ~1600 DEG, direct the magnesium chromium brick sintering temperature is over 1700 DEG C, because of its more than 1700 DEG C, magnesia chrome brick microstructure occurred change, and periclase chromium ore directly combined, so called direct bonded 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?
Semi - combined magnesia chrome brick is a kind of refractory product made from partly fused magnesia chromite sand.
Q:Magnesium chrome brick price?
Magnesia brick factory with strong technology foundation as the basis, has developed more than 40 varieties of products, including building materials, non-ferrous metals, iron and steel and other fields, won the national high-tech products nearly a dozen, four patents, including magnesia spinel brick reached the world advanced levelFrom July 2006 to now won the high-tech enterprises in Liaoning province; National Standardization Management Committee issued the "adopting international standard product certificate" enterprises; in 2009 passed the ISO9001 quality management system certification; the famous brand products of Liaoning Province certificate certificate and certificate management, the reliable guarantee for the quality of products.
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?
High aluminum brick: Al2O3 content more than 75 higher than that of the refractory clay brick, anti corrosion resistance, suitable for cement kiln etc., long service life, but high price.
Q:What are the types of magnesia chrome bricks for industrial use?
1. burned magnesia chrome bricks 2. magnesia chrome bricks 3. semi bonded magnesia chrome brick and magnesia chrome brick generally is the three

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