Name: China Refractory Magnesia Chrome Bricks Manufacturers, Suppliers and Factory - Good Price
Brand: Long Keter
SKU: 220920386

Products Description

Refractory magnesia chromium brick is a high-quality, high-performance material mainly made of magnesium oxide and chromium oxide. It has excellent fire resistance and can withstand chemical substances, acid and alkali corrosion and mechanical impact in high temperature environments. Because of the special properties of this material, it is widely used in many industries such as steel, machinery manufacturing, chemical industry, metallurgy and light industry.

The density of refractory magnesia-chrome bricks is usually between 2.9-3.1g/cm³, which is relatively light. Its flexural strength is very high, usually between 50-70MPa. The material has very strong heat resistance and can be used in high temperature environments for a long time. The maximum operating temperature can reach 1800°C.

The main components of this material are magnesium oxide and chromium oxide, as well as other auxiliary components. It has a high oxide content and can effectively resist chemical attack. The content of each chemical component has certain requirements. For example, the content of magnesium oxide is usually above 85%, and the content of chromium oxide is usually between 10-15%.

Products Parameters

Index

Magnesite-Chrome Brick

Directed Bonded Magnesite-Chrome Brick

Semi-Rebonded Magnesite-Chrome Brick

DMC-B

DMC-C

MGe-20

MGe-16

MGe-12

DMC12B

DMC9B

DMC6B

DMC4B

DMC20C

DMC18C

DMC16C

DMC12C

ZMC-35

ZMC-28

ZMC-20

ZMC-18

ZMC-15

MgO%

≥40

≥50

≥60

≥65

≥75

≥80

≥82

≥55

≥60

≥65

≥70

≥50

≥55

≥66

≥60

Cr2O3%

≥20

≥16

≥12

≥9

≥6

≥4

≥20

≥18

≥16

≥12

35-37

28-30

20-22

18-20

15-18

SiO2

–

≤2.0

≤1.8

≤1.5

≤2.5

≤2.4

≤2.0

–

Refractoriness Under Load 0.2MPa℃

≥1700

≥1650

≥1580

1680

1650

1700

1680

1700

Apparent porosity%

≤18

≤17

≤18

≤16

Cold Crushing Strength Mpa

≥40

≥45

≥40

Bulk density(Kg/m³)

3050

3000

3150

3100

3050

3000

3350

3250

3200

3100

3050

Thermal Shock Resistance (950℃ Air cooling )

–

Products Advantages

The characteristics of refractory magnesia-chrome bricks are mainly reflected in the following aspects:

(1) It has high seismic resistance and can be subjected to mechanical shock and vibration without being damaged.

(2) It has a wide range of uses and can be used in many industries such as metallurgy, steel, petroleum, chemicals, ceramics, cement, etc. in high temperature environments.

(3) It has good acid and alkali corrosion resistance and can be used in strong acid and alkali environments.

(4) It has good high temperature resistance and can be used in high temperature environments for a long time.

(5) High stability and will not change due to long-term use.

Products Applications

1. Iron metallurgical industry

In the iron metallurgical industry, the anti-corrosion lining of important equipment such as gas combustion chambers in gas cleaning devices, converter linings, electric arc furnace fronts and tops, continuous casting pits, interior cladding bricks, and kiln walls require good high-temperature strength and resistance to corrosion. Cast dry magnesia chrome bricks with excellent corrosion resistance.

2. Non-ferrous metallurgical industry

The non-ferrous metallurgical industry is mainly used in the smelting of light metals, such as magnesium, titanium, etc.; as well as in the fields of casting and machinery manufacturing. In these fields, magnesia-alumina bricks can be used for the lining of high-temperature equipment such as vacuum furnaces, linings, smelting furnaces and electromagnetic induction furnaces. At the same time, it can also be used for heat insulation and heat preservation in industrial environments such as high-temperature reactors and glass kilns.

3. Cement industry

The cement industry is a very common application field for magnesia-chromium bricks. It is mainly used as lining materials in important equipment such as cement kilns and rotary kiln auxiliary combustion chamber linings, collapse plates and tail smoke chambers. The excellent corrosion resistance and high fire resistance limit temperature of this material can effectively extend the service life of high-temperature ball mills, rotary kilns and other equipment.

4. Chemical industry

The chemical industry is another important application area of magnesia-chromium bricks. In high-temperature furnaces and reactors in petrochemical, metallurgy, fertilizer, chlor-alkali and other industries, high-strength, high-corrosion and high-corrosion-resistant materials are required for lining. Magnesia-alumina bricks have the above characteristics, such as oil converters, cracking furnaces, chlor-alkali equipment, sulfuric acid converters, etc.