Magnesite Chrome Brick_High Temperature Magnesia Chrome Brick

$magnesia chrome refractory$

$refractory magnesia chrome brick$

$magnesia chrome refractory$

$refractory magnesia chrome brick$

Magnesia chrome brick

Laurel Magnesia chrome brick is an alkaline refractory material, with periclase and spinel as its main mineral compositions. It is made from raw materials such as magnesia, chromite, or magnesia-chrome spinel. It features good high-temperature resistance, excellent thermal shock resistance, being able to withstand rapid temperature changes, strong corrosion resistance, having good resistance to both acidic and alkaline slags, and high strength at high temperatures. These characteristics enable it to be widely used in high-temperature furnaces in industries such as steel, non-ferrous metals, and glass, for example, in the roofs of open-hearth steelmaking furnaces, the covers of electric furnaces, the linings of non-ferrous metal smelting furnaces, the regenerators of glass furnaces, and other parts.

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Product Details
Table Parameters
Features
Applications
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Product Details

Standard Size: 230*114*64 or 230*114*76mm
High Refractoriness
Thermal Stability
High-temperature Resistance
High Cold Crushing Strength

Performance Characteristics of Magnesia Chrome Bricks

1. Good High-Temperature Resistance: It has a relatively high refractoriness, and can withstand the extreme temperature conditions inside high-temperature furnaces. It is not easy to soften and deform at high temperatures, and can be used in key parts of various high-temperature industrial furnaces.

2. Excellent Thermal Shock Resistance: The magnesia chrome brick has a moderate coefficient of thermal expansion and good thermal conductivity. It can maintain good structural stability in the case of rapid temperature changes, reducing cracking and spalling caused by thermal stress and prolonging its service life.

3. Strong Corrosion Resistance: It has good resistance to both alkaline and acidic slags. Its mineral composition enables it to form a relatively stable structure at high temperatures, slowing down the erosion rate of the slag on the brick body, and is suitable for different types of slag environments.

4. High Strength at High Temperatures: It can still maintain high strength in a high-temperature state, and is able to withstand the pressure of materials in the furnace, mechanical impact, as well as the scouring of gas flow, maintaining the integrity and stability of the furnace lining.

Table parameters

Direct-bonded Magnesia Chrome Brick:

Item		Data
Item		DMG8A	DMG8B	DMG12A	DMG12B	DMG16A	DMG16B
MgO	%	≥74	≥74	≥66	≥66	≥60	≥60
Cr2O3	%	≥8	≥8	≥12	≥12	≥16	≥16
SiO2	%	≤1.5	≤2.0	≤1.5	≤2.0	≤1.5	≤2.0
Apparent Porosity	%	≤19	≤19	≤19	≤19	≤19	≤19
Bulk Density	g/cm3	2.98	2.98	3.10	3.10	3.15	3.15
CCS	MPa	≥40	≥35	≥40	≥35	≥40	≥35
0.2MPa RUL ºC	ºC	≥1660	≥1600	≥1660	≥1600	≥1660	≥1600

Rebonded Magnesia Chrome Brick:

Item		Data
		RMG16A	RMG16B	RMG20A	RMG20B
MgO	%	≥65	≥65	≥60	≥60
Cr2O3	%	≥16	≥16	≥20	≥20
SiO2	%	≤1.2	≤1.6	≤1.2	≤1.6
Apparent Porosity	%	≤16	≤18	≤16	≤18
Bulk Density	g/cm3	3.1	3.1	3.15	3.15
CCS	MPa	≥43	≥40	≥45	≥43
0.2MPa RULºC	ºC	1750	1700	1750	1700

Semi-rebonded Magnesia Chrome Brick:

Item		Data
Item		SMG16A	SMG16B	SMG20A	SMG20B
MgO	%	≥60	≥60	≥55	≥55
Cr2O3	%	≥16	≥16	≥20	≥20
SiO2	%	≤1.5	≤1.8	≤1.5	≤1.8
Apparent Porosity	%	≤17	≤17	≤17	≤17
Bulk Density	g/cm3	3.1	3.1	3.15	3.15
CCS	MPa	≥40	≥35	≥40	≥35
0.2MPa RULºC	ºC	1750	1700	1750	1700

Features

★ Good thermal shock resistance performance

★ Excellent resistance in slag abrasion

★ Good cold crush strength

★ Higher temperate resistant

★ Lower apparent porosity

★ Lower impurity content

Magnesia chrome bricks find extensive applications in several industries. In the steel industry, they are commonly used in crucial positions such as the roofs of open-hearth furnaces, the covers of electric furnaces, and certain parts of converters. Their excellent high-temperature resistance and anti-erosion capabilities ensure the normal operation and extended service life of the furnaces under the harsh conditions of high temperatures and intense erosion. In the non-ferrous metal industry, they serve as the linings of smelting furnaces for metals like copper and nickel. During the smelting process, which involves high-temperature slag and molten metal, magnesia-chrome bricks can effectively resist erosion, making them an ideal choice. In the glass industry, they are applied to areas such as the regenerators and pool walls of glass furnaces. The complex environment inside glass furnaces, with high-temperature flue gas scouring and glass melt erosion, demands materials with strong resistance, and magnesia-chrome bricks meet this need, enhancing the thermal efficiency and service life of the furnaces.

Applications

Steel Industry

Cement Industry

Glass Industry

Other metallurgical industries

Magnesia chrome brick

Insulation and Refractory Materials