Technical Index of Kerui Magnesia Chrome Brick
| Name of indicator | ХП 1 | ХП 2 | ХП 3 | ХП 4 | ХП 5 |
|---|---|---|---|---|---|
| Mass fraction, %: | |||||
| MgO, no less | 46 | 46 | 42 | 42 | 42 |
| Cr2O3, no less | 22 | 22 | 20 | 15 | 15 |
| SiO2, no more | 6 | 7 | 8 | 8 | 8 |
| Open porosity, %, not more than | 20 | 22 | 23 | 24 | 25 |
| Apparent density g/cm3, no less | 2,95 | 2,95 | 2,95 | - | - |
| Compressive strength, N/mm² | 30 | 27,5 | 25 | 25 | 20 |
| Refractorines under load,, °С, not lower | 1 550 | 1 520 | 1 500 | 1 500 | 1 450 |
| Thermal shock resistance (1 300 °C - water), not less than | 2 | 2 | 2 | - | - |
Description of Magnesia Chrome Brick
Magnesia-chromium brick is a refractory product whose main components are magnesium oxide (MgO) and chromium trioxide (Cr2O3), and whose main mineral components are magnesite and spinel. The main raw materials for the production of magnesium-chromium bricks are sintered magnesium sand and chromite.
Преимущества хромитопериклазового кирпича
Magnesium-chromium bricks have excellent refractory properties and can withstand high temperatures in excess of 1500°C. They are therefore widely used in metallurgical, steel and cement industries. Therefore, it is widely used in high temperature industries such as metallurgy, steel and cement.
Due to its high hardness and density, it is not easy to be worn out in the process of running with magnesium-chromium bricks directly, and magnesium-chromium bricks have good anti-wear performance, which can prolong the service life of the equipment.
Magnesium-chromium brick bricks is an environmentally friendly refractory material that does not pollute the environment when used. In addition, it has protective properties such as fire, earthquake and wind resistance.
Magnesium-chromium bricks have good thermal shock resistance and will not crack during sudden temperature changes or sharp cooling. Therefore, it is widely used in the lining of high-temperature furnaces.
As a kind of alkali resistant refractory material, magnesium chromium brick has high corrosion resistance, especially in the cement industry, it is often used in the manufacture of rotary kiln and other high temperature equipment, which can effectively prevent chemical corrosion and abrasion.
Magnesium-chromium bricks can be used for lining high-temperature furnaces in various industries such as iron and steel, cement and glass, and can be customised according to the needs of different industries.
Application of magnesia-chromium bricks
Magnesium-chromium bricks can be used as linings for high-temperature equipment such as converters, electric arc furnaces, LF furnaces, RH furnaces, etc., as well as the vaults of furnaces in iron and steel smelting and other parts of the furnace plate.
Magnesium-chromium bricks can be used as the lining and heat-insulating materials for glass kilns, and can withstand the erosion of high-temperature glass liquids and gases.
Magnesium-chromium bricks are used as linings and insulation materials for cement kilns and rotary kilns, and can withstand alkaline gases and high temperature materials.
Magnesium-chromium bricks are used as linings and insulating materials for high-temperature reactors, pipes and hydroelectric generators in the coal chemical industry.
