Magnesia Refractories
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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
Sort | 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 |
- 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
- Q:Process for producing magnesia chrome brick
- The oxide of iron reacts to produce a loose effect caused by the expansion of the spinel. Also, the magnesia chrome brick can be made from the 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:What are the main raw materials of magnesia chrome bricks?
- At present the most widely used are magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. Mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors. In practical metals, it is the lightest metal, and the specific gravity of magnesium is about 2/3 of aluminum and 1/4 of iron. It is the lightest metal in practical metals, high strength and high rigidity.
- Q:Refractory brick, high alumina brick, magnesia chrome brick, magnesia brick, clay brick, which type of high temperature refractory brick?
- I produce clay bricks, and my bricks stand at 1500-1700 degrees. Specific depends on what kiln, brick is only part of it
- 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:What are the differences between magnesium chrome bricks, such as direct bonding, re bonding, semi bonding, CO sintering and chemical bonding? Hope expert advice..
- The process of firing magnesia chrome bricks is roughly the same as that of magnesia bricks. In order to eliminate the brick during firing, due to MgO and Cr2O3, Al2O3
- 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 are the environmental hazards of magnesia chrome refractory bricks?
- Magnesia chrome brick with MgO and Cr2O3 as the main component of this kind of brick, high refractoriness, high strength, anti alkaline slag corrosion resistance, excellent thermal stability, has certain adaptability in industry wide application of now high temperature acid slag
- 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.
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Magnesia Refractories
- Loading Port:
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