The main raw material of magnesia bricks is burned magnesia or electric fused magnesia,High pressure forming,high-temperature 1600-1700°C sintering,MgO content is above 91%. KERUI is a professional manufacturer of magnesia bricks, welcome to inquire!
| Item/Grade | M-98 | M-97A | M-97B | M-95A | M-95B | M-91 | M-89 | |
|---|---|---|---|---|---|---|---|---|
| ω (MgO)/% | μ0 ≥ | 97.5 | 97.0 | 96.5 | 95.0 | 94.5 | 91.0 | 89.0 |
| σ | 1.0 | 1.5 | ||||||
| ω (SiO2)/% | μ0 ≤ | 1.00 | 1.20 | 1.50 | 2.00 | 2.50 | / | / |
| σ | 0.30 | |||||||
| ω (CaO)/% | μ0 ≤ | / | / | / | 2.00 | 2.00 | 3.00 | 3.00 |
| σ | 0.30 | |||||||
| Apparent Porosity/% | μ0 ≤ | 16 | 16 | 18 | 16 | 18 | 18 | 20 |
| σ | 1.5 | |||||||
| Bulk Density (g/cm³) | μ0 ≥ | 3.00 | 3.00 | 2.95 | 2.90 | 2.85 | ||
| σ | 0.30 | |||||||
| Cold Crushing Strength/MPa | μ0 ≥ | 60 | 60 | 60 | 60 | 50 | ||
| Xmin | 50 | 50 | 50 | 50 | 45 | |||
| σ | 10 | |||||||
| 0.2MPa Refractoriness Underload/℃ | μ0 ≥ | 1700 | 1700 | 1650 | 1560 | 1500 | ||
| σ | 15 | |||||||
| Permanent Linear Change/% | Xmin~Xmax | 1650℃*2h -0.2-0 | 1650℃*2h -0.3-0 | 1600℃*2h -0.5-0 | 1600℃*2h -0.6-0 | |||
The refractoriness of magnesia bricks can reach above 2000℃. Magnesia bricks are an excellent refractory material, which can withstand high temperature environment without losing its structural strength.
Magnesia bricks are basic refractory bricks, which have strong resistance to alkaline slag such as CAO and FEO, and are often used as masonry materials for basic kilns.
Strength and hardness: Magnesia bricks have high strength and hardness, and can withstand greater pressure and load.
The thermal conductivity of magnesia bricks is several times that of clay bricks, but the thermal conductivity of magnesia bricks decreases with the increase of temperature.
Magnesia refractory bricks have a long service life due to their resistance to high temperature and chemical attack. It is not easily damaged and degraded, and can stably assume the function of a fire-resistant structure for a long time
Magnesia bricks have high thermal expansion, and the linear expansion coefficient increases with the increase of temperature. In high temperature environment, it can quickly conduct and dissipate heat, prevent thermal stress from accumulating, and reduce the risk of structural damage.
In the process of iron and steel smelting, magnesia bricks are widely used in the lining and flue of converters, electric furnaces, heavy oil heating furnaces and other equipment to ensure the safe operation of equipment.
Magnesia bricks are also widely used in the light metal smelting process, such as the lining and protection of aluminum electrolytic cells, aluminum alloy melting furnaces, magnesium alloy furnaces and other equipment.
Magnesia bricks are also used as linings and flues of kilns, crucibles and pipes in the glass industry to ensure the quality and efficiency of glass production.
In the chemical industry, magnesia bricks can be used in equipment under high temperature and high corrosion environment such as sulfuric acid generation conversion furnace and flue gas desulfurization equipment to improve its corrosion resistance and service life.
Magnesia bricks are also widely used in mechanical processing equipment, oil drilling platforms and other industries that need to withstand high temperature and wear, so as to prolong the service life of the equipment.
We have our own factory with professional technical team and production equipment. With Fully automatic batching system; 20 sets of 400-1000 ton forming presses; 2 * 168m high-temperature tunnel kilns; 20000㎡ storage workshop. Ensure product quality, improve production efficiency, and provide customers with the most satisfactory products and services.
We have our own factory with professional technical team and production equipment. With Fully automatic batching system; 20 sets of 400-1000 ton forming presses; 2 * 168m high-temperature tunnel kilns; 20000㎡ storage workshop. Ensure product quality, improve production efficiency, and provide customers with the most satisfactory products and services.
The entire delivery process is tracked, and Kerui’s expert team solves specific project needs with the utmost professionalism. If the customer’s project requires it, Kerui’s expert team will go to the customer’s country to provide face-to-face technical support.
sides mainland China, Kerui Refractory has exported products to more than 50 countries and regions across 5 continents across the world, including Asia, Europe, America, Africa and Oceania. We have received recognition and high praise from customers all over the world, and are constantly receiving customers’ return orders and referrals.