Brief Description
Magnesium aluminum spinel in magnesia alumina spinel refractory bricks is a generic name for minerals with the same crystalline structure. Generally, mg-aluminum spinel refractory refers to the general structure of MgAl2O4 or MgO·Al2O3, that is, the magnesium aluminum spinel is prepared from high-purity materials, has good corrosion resistance, thermal shock stability. Magnesium aluminum spinel bricks have a few anti-flaking properties. Magnesium aluminate spinel brick is the finest advanced refractory material.
The amount of magnesium aluminum spinel bricks in the production of magnesium-aluminum spinel bricks is not as high as possible. As the amount of spinel increases, the thermal shock resistance is better, but the strength (especially the flexural strength) is caused by the mismatch expansion. ), with Al2O3 as the standard, the Al2O3 in the product should not be greater than 15%~20%, preferably 10%~18%.
The main impurity in magnesium aluminum spinel bricks is SiO2, which should not exceed 1.5%. The advantage of magnesia alumina spinel is that it has good thermal shock resistance. During the process of use, it reacts with clinker to form a thin layer of calcium aluminate protective layer on the surface of the spinel brick, magnesia alumina spinel refractory bricks makes the liquid phase difficult to penetrate and resists peeling performance.Direct combination of mg-chrome bricks are easy to hydrate, the thermal conductivity is large. The temperature of the kiln cylinder is higher than direct combination of mg-chrome bricks. pls email us for more information and quotation :inquiry@rsrefractorygroup.com.
Specification
| Item | Mg0 (%) |
Al2o3 (%) |
Sio2 (%) |
Bulk Density (g/cm3) |
Apparent Density (%) |
Cold Crushing Strength(Mpa) |
Refractoriness under Load of 0.2 Mpa(℃) |
ThermalShock Stability (1000℃,water,quencing,cycle) |
| RS-85A | 85 | 9 | 1 | 18 | 2.95 | 45 | 1700 | 100 |
| RS-85B | 82 | 9 | 2 | 18 | 2.9 | 40 | 1700 | 80 |
| RS-85C | 80 | 9 | 3 | 19 | 2.85 | 40 | 1650 | 70 |
| RS-93A | 93 | 5 | 1 | 18 | 2.95 | 45 | 1700 | 80 |
| RS-90B | 90 | 5 | 2 | 18 | 2.9 | 40 | 1700 | 70 |
Application
The magnesia-alumina spinel is used in cement rotary kiln, which not only avoids chrome pollution, but also has good resistance to spalling and Magnesium alumium spine firebricks is used to make ladle castable , greatly improve the erosion resistance of the steel lining. Magnesium alumium spinel is widely used in steelmaking refractories. The preparation of high quality pre-synthesized spinel provides new raw materials for the production of amorphous and shaped high-purity refractories.
Zhengzhou Rongsheng Kiln Refractory Co,.Ltd Introduction
Zhengzhou RongSheng Kiln Refractory Co. Ltd. is one of leading manufacturers and distributors of high quality refractories for use in industries including steel plants, cement producers and glass works.Our company can provide not only the domestic and foreign customers excellent quality of high-temperature thermal insulation material, but also the first-rate service including professional furnace lining design, installation supervision, engineering construction etc. Also custom the refractory brick according to your kiln and your request.
Over 200 employees for refractory material production professionally, Including senior professional and techinal personnel 15 persons, an annual production capacity of 80000 tons, with light & weight material production lining, various complete production, testing, test equipment, including equipped with 10 units of 400 tons to 1000 tons punch press series, two 148 meter length tunnel kiln.
