Magnesia chrome brick is a kind of alkaline refractory materials that periclase and magnesia-chrome spinel are the main crystal phase, and the main raw materials are magnesia and chromite. Magnesia chrome brick is featured with high refractoriness, high temperature strength, excellent anti-oxidation, strong alkaline slag erosion resistance, low thermal conductivity and good thermal stability. It is used in the architectural material industry, metallurgy industry and other kilns and furnaces, such as the steel electric furnace, open hearth furnace, vacuum treatment, flash furnace, copper smelting converter, anode furnace, cement kiln, and glass furnace.
Physical and Chemical Index
|Refractoriness under load℃≥||1550||1550||1550||1550|
|Apparent porosity% ≤||23||23||23||24|
Magnesia Chrome Refractory Bricks Compositions
The main raw material of magnesia chrome brick is sintered magnesite and chromite. And the production technology of calcined magnesia chrome brick is the same as that of magnesia brick.
Magnesia chrome brick a kind of refractory product that is made of MgO and Cr2O3, with the periclase and spinel as the main mineral components, and cr2o3 content varies with the different requirements. It can be sintered under the oxidation condition at 1600 ~ 1800 ℃. Burnt magnesia chrome brick is made of high quality magnesia and chrome. It also can be made into unburned refractory brick by chemical bond such as sodium silicate and magnesium salt solution. Unburned magnesia chrome brick has the characteristics of simple production technology, low cost, good heat stability, but the high temperature strength is worse than that of the burnt brick.
Raw materials: sintered magnesite and chromite
Chemical component: MgO and Cr2O3
Main mineral components: periclase and spinel
Magnesia Chrome Refractory Bricks Classifications
According to the chemical composition and production technology, magnesia chrome brick can be classified into direct bond magnesia chrome brick, semi bonded magnesia chrome brick, and common magnesia chrome brick. The most important character of the direct bond magnesia chrome brick is the pure raw materials. High temperature phases such as periclase and spinel bond directly at the high sintering temperature. And the low melting phase such as the silicate distributes in the shape of the island, thus improve the high temperature strength and slag resistance.
Direct bond magnesia chrome brick
Semi bonded magnesia chrome brick
Common magnesia chrome brick
Magnesia Chrome Brick Properties
Common magnesia chrome brick has high refractoriness, strong alkaline slag erosion resistance, good thermal shock stability, and high temperature structural strength.
Magnesia chrome brick belongs to alkaline refractory material. It is featured with good thermal shock resistance, volume stability under high temperature, and high refractoriness under load.
In addition, there is also fused magnesia chrome brick, which is made of fused magnesia chrome material poured by the electric furnace solitude. And the melt granule rebounded magnesia chrome brick, which is made by the fused magnesia chrome material in the process of brick production technology.
- Good thermal shock stability, and high temperature structural strength.
- Excellent thermal shock resistance, volume stability under high temperature
- And high refractoriness under load.
- High refractoriness, strong alkaline slag erosion resistance
Magnesia Chrome Refractory Bricks Uses
Magnesia chrome brick has a wide range of application. It can be used in the metallurgical industry, architectural material industry, and other non-ferrous smelting furnace. Especially, in the steel and non-ferrous metal smelting industry, magnesia chrome brick has almost taken the place of the magnesia brick. Besides, it is used in the cement rotary kiln, glass kiln and other thermal equipment.In detail, it can be used in the following parts:
- Glass furnace, open hearth furnace, electric furnace, and anode furnace;
- Large cement rotary kiln, copper smelting converter, and secondary refining furnace;
- Vacuum treatment equipment, and high erosion areas of the flash furnace;
- Flash furnace analyze reaction tower and sedimentation tank;
- Tap hole, and permanent lining;
- High temperature parts of the ultra-high power electric furnace wall, etc.
The chemical composition of magnesite-chrome brick is MgO, so please keep it away from moisture, rain, and snow in the process of storage and transportation.
Magnesia Chrome Refractory Bricks Manufacturers
Zhengzhou Rongsheng Kiln Refractory Co. Ltd, established in the early 90s of twenty century, located in the foot of Mount Song, a place of Xinmi city, which is in the middle of Zhengshao Expressway. The abundant high quality materials and convenient transportation, neighboring the Longhai and Jingguang railway lines, provide favorable conditions for the production of the refractory materials. After 20 years of hardworking and development, it has become a comprehensive enterprise producing refractory materials in metallurgy, building materials, electric power and chemical industry, etc.
Rongsheng has specialized in magnesia chrome bricks for more than 20 years. As a professional magnesia chrome supplier, there are about 1262 employees, including senior technical personnel 65, high-tech workers 80 and complete physical and chemical testing equipment and advanced detection methods. The credit rating is AAA grade, and the economic indicators and the enterprise technical force, namely the scale keep the leading position in the domestic industry.
Its major business are shaped and unshaped refractory materials, and beside these, insulation materials such as the insulation blanket, ceramic fiber board, and the refractory balls are usually sold together with the refractory bricks and castable. Such insulation products are featured with high temperature resistance, light in weight, and low thermal conductivity, being extensively used in the insulation parts of different thermal equipment.
It has perfect production equipment and testing instrument, and passed ISO9001: 2008 quality system certification, environmental management system certification, and occupational health and safety management system certification. Besides, Rongsheng has established cooperative relations with multiple scientific research institutes, which ensure the superior quality of magnesia chrome bricks.
Rongsheng is persisting the strategic developing road based on quality and cheap to establish its own brand. Take the chance and buy high quality magnesia chrome bricks now! We ensure you the most satisfactory, timely, and efficient service, and most favorable prices.Leave your requirements about the refractories you need. We will reply you within 24 hours. :