The magnesia spinel bricks produced and sold by Kerui has low thermal conductivity and is easy to form a stable kiln skin. It is the ideal choice for chrome-free refractory materials for cement kiln firing zones. Moreover, magnesium spinel bricks run smoothly and have strong adaptability, exceeding the level of the original direct-bonded magnesium-chrome bricks. This completely realizes the chrome-free refractory materials for cement kiln firing zones. Therefore, this solves the environmental pollution problem caused by magnesium chrome bricks used in cement kilns in the past.
Technical Parameters of Magnesia Spinel Bricks
The chrome-free periclase-spinel bricks developed for cement kiln firing zone mainly include magnesia iron spinel brick and magnesia alumina spinel brick. The following are the technical parameters of these two kinds of magnesia bricks for your reference.
Kerui Magnesia Iron Spinel Brick
| Item | MFe-85A | MFe-85B | ||
|---|---|---|---|---|
| MgO, % | ≥ | 85 | 85 | |
| Al2O3, % | ≥ | 3-5 | 3-5 | |
| Fe2O3, % | ≥ | 4-6 | 4-6 | |
| Bulk Density, g/cm³ | ≥ | 2.95 | 2.90 | |
| Cold Crushing Strength, MPa | ≥ | 55 | 50 | |
| 0.2MPa Refractoriness Under Load, ℃ | ≥ | 1650 | 1600 | |
Kerui Magnesia Alumina Spinel Brick
| Item | Index | |
|---|---|---|
| MgO, % | ≥ | 80 |
| Al2O3, % | ≥ | 10 |
| Apparent Porosity, % | ≤ | 17 |
| Bulk Density, g/cm³ | ≥ | 2.9 |
| Cold Crushing Strength, MPa | ≥ | 50 |
| High-temperature Bending Strength (1350℃*0.5h), MPa | ≥ | 3.5 |
| Thermal Shock Resistances (1100℃, Water Cooling), Cycle | ≥ | 12 |
Main Application of Magnesia Spinel Refractory Bricks
Lime Kiln
Magnesium spinel bricks are mainly used in key parts of lime kiln such as burning zone and preheating zone. These parts have extremely high requirements on the performance of refractory materials. The use of magnesium spinel bricks can significantly improve the operating efficiency and product quality of lime kiln.
Other Kilns
We also use it for the furnace walls of converters, electric furnaces and aluminum smelting furnaces. It can also be seen in cs, glass furnace, hot blast furnaces and waste incinerators in the power industry.
Advantages of Kerui in Producing Magnesia Spinel Bricks
High Quality Raw Materials
The main raw materials of Kerui magnesium spinel bricks are high purity magnesia sand, fused magnesia sand and ferroaluminum spinel. The physical and chemical properties of these raw materials are excellent. This provides a solid foundation for the long service life of magnesia iron spinel brick and magnesia alumina spinel brick.
Special Production Process
In the production process of magnesium spinel bricks, our factory uses special processes such as high-pressure molding and high-temperature firing. These processes ensure the density and strength of kerui refractory brick. At the same time, this also makes the magnesia bricks sold by Kerui have excellent microstructure and performance.
International Professional Refractory Supplier-Kerui Group
Focus on Quality
Our company has long been focusing on the research and development and production of high quality refractory materials. Moreover, Kerui has 15 utility model technology patents. The magnesium spinel bricks produced by our company have chrome-free and environmentally friendly effects. It is an indispensable chrome-free and environmentally friendly product in the cement industry.
Focus on Innovation
Kerui has long focused on technological innovation and modern equipment investment. Our production all adopts fully automatic microcomputer batching, 400T-1000T brick press automatic molding and automated natural gas tunnel kiln sintering process. Choosing Kerui’s refractory products can ensure that you can use them for a long time without worry.
Focus on Export
We are a professional export-oriented industry and trade integrated company. Our products are exported to more than 40 countries on six continents. For example, Russia, Canada, South Africa, South Korea, the United States, Saudi Arabia, Indonesia and Turkey. Follow our Pinterest, which contains more product export information you want to know.
