Magnesia iron spinel brick is a new generation of chromium-free alkaline refractory materials. What’s more, it is usually used in the firing zone of large-scale rotary kilns. Besides, we also can customize this magnesia hercynite brick according to your kiln and your request.
The raw material of this magnesia iron spinel brick is high purity spinel. In addition, we make use of the characteristics of solid melting of iron oxide in magnesium oxide to produce chromium-free environmentally friendly magnesia hercynite brick during high-temperature sintering. This manufacturing method solves the problem of chromium-free alkaline bricks being difficult to stick to the kiln skin. Moreover, magnesia hercynite brick is easier to adhere to the kiln skin than directly combined magnesite chrome brick. This makes its use effect more stable and excellent. Therefore, this effectively solves the problem of chromium pollution in the environment caused by magnesia chrome bricks used in cement kilns during use.
Tips: this table is formulated with reference to Chinese refractory industry standards. Contact us or follow us on YouTube for more information.
| Item/Grade | MFe-85A | MFe-85B |
|---|---|---|
| ω (MgO) ≥/% | 85 | 85 |
| ω (Al2O3)/% | 3-5 | 3-5 |
| ω (Fe2O3)/% | 4-6 | 4-6 |
| Bulk Density ≥ (g/cm³) | 2.95 | 2.90 |
| Cold Crushing Strength ≥ (MPa) | 55 | 50 |
| Refractoriness Underload ≥ (T0.6℃) | 1650 | 1600 |
| Thermal Shock Resistance ≥ (950℃ Air Quenching, Cycle) | 100 | 90 |
| Thermal Conductivity ≤ (1000℃) [W/(m·K)] | 2.6 | 2.6 |
| Thermal Expansion Coefficient (1400℃)/% | 1.6 | 1.6 |
Magnesia spinel brick can withstand thermal expansion and cold contraction at high temperatures. Furthermore, it has lower thermal stress and thermal fatigue cracking tendency. Besides, this structural flexibility allows the mafic spinel bricks to withstand temperature changes and thermal shock during high-temperature processes. So, this ensures the structural stability and safety of industrial equipment.
Hanging kiln skin is a ceramic coating used to protect the surface of bricks and improve fire resistance. In addition, the surface of magnesia iron spinel brick has a special chemical composition and structural characteristics. So, its bonding ability with the kiln skin is strong. That is to say, it can effectively prevent the kiln skin from falling off and extend the service life of the excellent refractory firebricks.
Chromium compounds have certain toxicity and environmental pollution risks. In contrast, magnesia iron bricks are produced using a chromium-free formula and do not contain harmful chromium compounds. Therefore, there will be no pollution to the environment during industrial production. This complies with industrial environmental standards, making magnesia iron bricks a sustainable choice.
We mainly apply magnesia spinel bricks in the firing zone of rotary kilns, vertical kilns and other kilns in cement production. Alternatively, you can use mafic spinel bricks as lining material. It is resistant to high temperatures and alkali corrosion and can extend the service life of equipment.
In addition, we will also use magnesia iron spinel brick in high-temperature kilns in the steel smelting process such as steel-making furnaces and converters. What’s more, it is resistant to high temperatures and corrosion. Therefore, magnesia hercynite brick can be used in the lining of kilns.
In the aluminum smelting process, magnesia hercynite brick can be used as a lining material for aluminum electrolytic cells. Magnesia spinel bricks can withstand the corrosion of liquid aluminum at high temperatures. Moreover, magnesia hercynite brick protects the structural integrity of the equipment.
In a glass melting furnace, you can use magnesia spinel brick for lining. Kerui magnesium bricks can resist chemical attacks at high temperatures and ensure the normal progress of glass production. Also, if you are not sure which type of refractory bricks to use in your kiln, contact us for a free consultation.
Kerui refractory and insulating fire brick for sale directly to customers from its production base, eliminating the need for intermediate links. So, we can offer more competitive prices. Moreover, Kerui can ensure the stability of product quality and service, allowing customers to purchase with more confidence.
We have advanced automated production equipment and a professional technical team. This means that Kerui has strong production strength and production capacity. Therefore, we are able to deliver large batch orders on time and ensure stable and reliable quality of magnesia iron spinel brick.
Kerui not only provides magnesia brick sales but also provides customers with professional technical support. We have an experienced technical team that can help customers solve various technical problems encountered during use. So, Kerui ensures that customers use the product smoothly.
Kerui Company pays attention to after-sales service and guarantees product quality. If there are quality problems or other after-sales needs for advanced refractories, we will respond promptly and provide solutions. Therefore, Kerui ensures that customers have no worries during the purchase and use process.
The chromium-free magnesia iron spinel brick produced by Kerui is of high quality. Moreover, its environmentally friendly properties also meet the requirements of sustainable development. This provides customers with a more environmentally friendly and safer choice for industrial production. Feel free to contact us for a free quote!