Magnesia Calcium Brick,Magnesia Dolomite Brick, magnesia dolomite brick, for AOD,VOD,GOR,LF-VD
- Ref Price:
-
$200.00 - 400.00
/ m.t.
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 2 m.t.
- Supply Capability:
- 50000 m.t./month
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Quick Details
Place of Origin: China
Shape:Brick
Material:Magnesia dolomite
SiO2 Content (%): 1.3
Al2O3 Content (%): 0.5
MgO Content (%): 52.3~80.3
CaO Content (%): 13-42
Refractoriness (Degree): Common (1580°< Refractoriness< 1770°)
CrO Content (%): -
SiC Content (%): -
Model Number: MG-15, 20, 25, 30, 40
Brand Name: CMAX
Fe2O3 Content (%): 0.7
Bulk density (g/cm3): 3.03
Apparent porosity (%): 8
Cold crushing strength(MPa): 55
Refractoriness under Load 0.2MPa (℃): 1700
Supply Ability
Supply Ability:
2000 Ton/Tons per Month
Packaging & Delivery
Packaging Details
in wooden pallets
Port:China port
Product description
Material and Technique
Magnesia dolomite bricks/magnesia calcium bricks for AOD funace use synthetic dolomite sand as raw materials, selecting MgO/ CaO ratio in accordance with different needs, which are produced by high heat sintering and vacuum pressure impregnation pitch or paraffin treatment.
Magnesia dolomite bricks are of alkaline refractory products with a higher MgO content. Generally, MgO content of magnesia dolomite bricks is beyond 35%, then CaO content is more than 40%. In addition, Magnesia dolomite bricks also contain other impurities, such as SiO2, Al2O3, Fe2O3, etc.
Properties
Magnesia dolomite bricks for AOD furnace have good resistance to elevated temperatures and high slag resistance.
Application
As AOD furnace refractories, magnesia dolomite bricks are increasingly being used as linings for every part of AOD furnace, such as trunnion, tuyere, slag line, wall, bottom and furnace end.
Specifications
Index | MG15 | MG20 | MG25 | MG30 | MG40 |
MgO (%) | 76.3-80.3 | 72.3-76.3 | 66.3-70.3 | 62.3-66.3 | 52.3-56.3 |
CaO (%) | 13-17 | 18-22 | 23-27 | 28-32 | 38-42 |
Al2O3 (%) | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
Fe2O3 (%) | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
SiO2 (%) | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 |
Bulk density (g/cm3) | 3.03 | 3.03 | 3.03 | 3.03 | 3.0 |
Apparent porosity (%) | 8 | 8 | 8 | 8 | 8 |
Cold Crushing Strength (MPa) | 55 | 55 | 55 | 55 | 55 |
Reheating linear change (%) | -0.35 | -0.61 | |||
Refractoriness under load (℃) | 1700 | 1700 | 1700 | 1700 | 1700 |
Thermal Expansion (%) | |||||
800℃ | 0.8~1.0 | 0.8~1.0 | 0.8~1.0 | 0.8~1.0 | 0.8~1.0 |
1200℃ | 1.35~1.6 | 1.35~1.6 | 1.35~1.6 | 1.35~1.6 | 1.35~1.6 |
1600℃ | 1.8~2.0 | 1.8~2.0 | 1.8~2.0 | 1.8~2.0 | 1.8~2.0 |
Magnesia dolomite bricks supplier
Hitech Material as the magnesia dolomite bricks supplier in China, offers various grades of magnesia dolomite refractory bricks used for various industrial furnaces.
Application
Package
Certification
- 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: 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 are the environmental hazards of magnesia chrome refractory bricks?
- Some of the magnesia chrome bricks will be converted into Cr6+ when used, producing K2CrO4 and other toxic and carcinogenic compounds such as Cr3+
- Q: Magnesia chrome brick
- Magnesite brick and electric arc furnace melting magnesium chromium material by direct casting (see Figure microstructure, color), fused magnesia chrome brick material produced by the process of melting particles combined with magnesia chrome brick etc..
- Q: How many kinds of refractory bricks are there?
- Magnesia chrome brick: Hang kiln, used for firing zone, the disadvantage is the poor thermal shock resistance, plus six Cr price is highly toxic, the production and use of the national magnesia chrome brick is gradually reduced, the brick production unit as soon as possible to find alternatives.
- 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.
- 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: With different capacitance magnesia brick brick
- Burnt magnesia brick is made of high quality sintered magnesia as main raw materials, paper pulp as binder. After mixing and high pressure molding, it is fired in a high temperature tunnel kiln over 1550 degrees celsius. It has good thermal stability, corrosion resistance and spalling resistance. Widely used in converter, arc furnace and other industrial furnace lining refractory.
- Q: What is the difference between magnesia chrome brick and direct bonded magnesia chrome brick?
- The magnesia chrome bricks are divided into ordinary magnesia chrome bricks, direct bonding magnesia chrome bricks, half bonded magnesia chromite bricks, fused magnesia chrome bricks, fused magnesia semi bonded magnesia bricks, and unburned magnesia chrome bricks
- 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.
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Magnesia Calcium Brick,Magnesia Dolomite Brick, magnesia dolomite brick, for AOD,VOD,GOR,LF-VD
- Ref Price:
-
$200.00 - 400.00
/ m.t.
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 2 m.t.
- Supply Capability:
- 50000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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