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Magnesite Refractory Bricks MGO-C Brick Magnesia Alumina Brick Magnesia Chrome Brick
Magnesia-chrome brick is an alkaline refractory material fired from chrome ore and magnesia. The main components are chromium oxide and magnesium oxide.Good thermal stability, it is sintered at a high temperature above 1800°C in an ultra-high temperature tunnel kiln, and the refractoriness is above 2000°C. The performance of resistance to sudden temperature change and resistance to alkaline slag is good. Used for laying steel leveling furnace, steelmaking electric furnace, non-ferrous metal smelting furnace, cement rotary kiln lining, RH refining furnace. This kind of brick has high fire resistance, high temperature and high temperature strength, strong erosion resistance to alkaline slag, good thermal stability, and also has a certain adaptability to acid slag.
Brand of name
Index | pre-masonry magnesia-chrome bricks | ||||
XDMG-B | XDMG-M | XDMG-P1 | XDMG-P2 | XDMG-RB | |
MgO % | ≧54.5 | 55-62 | ≧60 | ≧60 | ≧70 |
Cr2O3 % | ≧19.5 | 17-21 | ≧12-20 | ≧18 | ≧15 |
Al2O3 % | ≧6 | ||||
SiO2 % | ≦1.8 | ≦2 | ≦2 | ≦2 | |
Fe2O3 % | ≦14.5 | ||||
CaO % | ≦2.5 | ≦1.3 | ≦1.3 | ||
Mpa Cold crushing strength | ≧45 | ≧40 | ≧50 | ≧55 | ≧45 |
Mpa Bending strength 1500℃ | ≧1.0 | ||||
g/cm3 Bulk density | ≧3.20 | ≧3.0 | ≧3.18 | ≧3.26 | ≧3.0 |
0.2Mpa ℃ Refractoriness under load T0.6 | ≧1750 | ≧1700 | ≧1700 | ≧1700 | |
% Apparent porosity | ≦18 | ≦18 | ≦18 | ≦18 | ≦19 |
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FAQ
1. What are refractory products?
Refractory products refer to functional materials which can resist high temperature or even ultra-high temperature. They are widely used in various high temperature heat treatment equipment, such as steels-melting kiln, glass kiln and cement kiln. The quality of refractory products directly affects the usable life of kilns and the quality of the final industrial output. Refractory products are made from various natural minerals such as silica, dolomite, graphite, zircon, magnesia, high aluminium ore and chrome ore through numerous technical refining processes. They have valuable features such as high-heat insulation, high-heat resistance, high strength, high hardness, good volume stability, oxidation resistance, excellent complexity, wear resistance, corrosion resistance, etc.. Some refractory products even have special features such as high ventilation, heat conduction and extreme hardness.
2. Any differences between shaped and unshaped refractory products?
Shaped refractory products can be pressed into bricks and are, generally used in building heat treatment equipment such as metallurgical kilns. Unshaped refractory products refer to fire-resistant casting materials. They can be moulded into whatever shapes and are suitable for building different high temperature furnaces and using as the lining in different heat treatment furnaces.
Our Services:
• Whole package refractory linings design for the kilns;
• Efficient and economical refractories recommendations;
• Provide the sample properties test report from authority institute (SGS or CNAS);
• Kilns linings installation supervision, inspection, evaluation on site;
• Offer measurement of the changes of the roundness in the rotary kiln shell during operation (Ovality measurement).
• Cooperated research and development, provide the best suitable products for different working conditions of the kilns;
• Has logistics company with great advantage in logistics and shipping