What is magnesia refractory?
  • Time:Jun 06, 2023
  • Views: 5

Magnesia refractory is a type of refractory material that is made primarily from magnesium oxide (MgO). Magnesia refractories have excellent high-temperature performance and are widely used in various high-temperature industrial furnaces, such as steelmaking furnaces, cement kilns, glass melting furnaces, and non-ferrous metallurgical furnaces.

Magnesia refractories can be classified into three main categories based on their MgO content:

1.Direct-bonded magnesia brick: This type of magnesia refractory is made by sintering high-purity magnesia raw materials at a high temperature without any additives. It has excellent thermal shock resistance, high corrosion resistance to basic slag, and good high-temperature strength.

2.Fused magnesia brick: This type of magnesia refractory is made by melting high-purity magnesia raw materials in an electric arc furnace or a rotary furnace, and then casting, cooling, and crushing the fused material to produce the final product. It has excellent chemical stability, high melting point, and high thermal conductivity.

3.Dead-burned magnesia brick: This type of magnesia refractory is made by calcining natural magnesite or magnesia clinker at a high temperature of up to 1800℃. It has a high refractoriness, strong resistance to alkaline slag erosion, and good thermal shock resistance.


Magnesia refractories have many advantages, such as high-temperature resistance, corrosion resistance, and thermal shock resistance, making them ideal for use in various high-temperature applications.

Related products
More Products →

Refractoriness under load high

High temperature strength

Dense structure

Refractoriness under load high


Environmentally friendly

low density

good corrosion resistance

related articles
more articles
Magnesia, or magnesium oxide (MgO), is an important component in firebrick. It serves as a bonding agent and a refractory material with excellent high
The refractory density of magnesia can vary depending on the specific type of magnesia being used and its properties, as well as factors such as poros
Magnesia carbon brick is a type of refractory brick that is made from high-purity magnesia and graphite. It has excellent corrosion resistance, therma
Magnesia carbon bricks are a type of refractory brick made from high-purity fused magnesia, graphite, and various additives. They have excellent high-
Magnesia-chrome brick is an important refractory material, which is mainly sintered from raw materials such as magnesium oxide and chromium oxide. How
Magnesia-alumina bricks and magnesia-iron bricks are two commonly used refractory materials. What is the difference between magnesia-alumina bricks an

Please leave us a message and look forward to knowing your thoughts


Want an immediate response?

You can consult online or write an email, We deal with your needs immediately

© Zhengzhou Zhenjin Refractory Materials Co.,Ltd.