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Magnesium brick

Product Name: Magnesium brick

Application: Ladle furnace/AOD/GOR/EAF/BOF

Magnesium brick Parameters

Grade Mg0 CaO AI203  Fe203 Si02 B.D. A.P. C.C.S R.U.L
% % % % % g/cm³ % Mpa
MZ-91 91.21 2.82 0.79 1 4.1 2.93 14.50 85 1530
MZ-95 94.58 0.72 0.72 0.88 2.03 2.96 15.00 80 1640

LMM Magnesium brick play a crucial role in steelmaking due to their exceptional properties and suitability for the harsh conditions encountered in steel production processes, It providing reliable and durable refractory linings that withstand high temperatures, resist chemical corrosion, and contribute to the efficient operation of steelmaking furnaces. Their use helps ensure the quality of steel produced and the longevity of steelmaking equipment. Here are several key roles they fulfill:

Lining of Steelmaking Furnaces: In steelmaking, high-temperature furnaces such as basic oxygen furnaces (BOFs), electric arc furnaces (EAFs), and ladle furnaces are used to melt and refine steel. Magnesia bricks are often employed to line these furnaces due to their ability to withstand extremely high temperatures, typically ranging from 1500°C to 2000°C. The refractory lining made of magnesium bricks protects the steelmaking vessel from the intense heat generated during the melting and refining processes, ensuring the structural integrity of the furnace and preventing damage.

Resistance to Basic Slag: Basic oxygen steelmaking, in particular, involves the use of basic slag, which has a high pH and can be corrosive to refractory materials. Magnesia bricks possess outstanding resistance to basic slag, rendering them ideally suited for lining steelmaking furnaces that utilize this type of slag. Their chemical stability under alkaline conditions helps prolong the service life of the refractory lining, reducing maintenance costs and downtime.

Refractory Repair and Maintenance: Steelmaking furnaces undergo significant thermal cycling and mechanical stress during operation, leading to wear and erosion of the refractory lining over time. Magnesia bricks are frequently employed for repair and maintenance tasks owing to their ready availability, straightforward installation process, and seamless compatibility with pre-existing refractory linings. They facilitate the straightforward replacement or patching process, effectively restoring the integrity of furnace linings and subsequently prolonging the operational lifespan of steelmaking equipment.

Controlled Thermal Conductivity: Magnesia bricks possess relatively low thermal conductivity, which helps to minimize heat loss from the steelmaking furnace. This property contributes to energy efficiency by reducing the amount of heat required to maintain the desired operating temperature, thereby lowering fuel consumption and production costs.

magnesia bricks


● Automatic controlling system & complete chemical & physical testing system

● 2100 tons automatic hydraulic press

● 2 lines ultra high temperature tunnel kiln tunnel kilns (1850 ℃)

● 10 sets presses, including 1000t, 800t, 630t and 400t friction press, advanced crushing, blending




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Tel:86-411 84174804



Address:Dashiqiao City,LiaoNingProvince,China

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