Magnesia Bricks Manufacturer
Refractory bricks with magnesium oxide as the main component and periclase as the crystalline phase are collectively referred to as magnesia refractory bricks. Magnesia bricks manufacturer, Rongsheng refractory manufacturer, will introduce you to some common magnesia bricks.
Magnesia Refractory Bricks
Magnesium-containing refractory brick products are divided into direct bonded magnesia brick products, general sintered magnesia brick products and unfired magnesia brick products. This kind of refractory material is added to the chemical binder to make a certain shape, and the magnesia bricks product made without firing is called unfired magnesia brick. These are all the manufacturing method to magnesium-containing refractories, by the Magnesia Bricks Manufacturer notes.
Fired products are different in nature from unfired products. The fired magnesia brick is generally fully sintered at 1500 ~ 1700 ° C. In the composition, the crystals are sintered with each other to become a whole, and the strength does not decrease much during the heating process. Just above 1300 ° C, the strength gradually decreases due to the liquefaction of the subcrystalline phase.
Some Kinds of Magnesia Bricks
Non-fired magnesia brick products rely on hydration of magnesium or calcareous cement to maintain strength. The hydration structure is destroyed after being heated, the bonding force disappears near 400 ° C, and the strength decreases sharply. The temperature continued to rise, and the strength could not be restored. In special cases it will drop below 49MPa. Therefore, non-fired magnesia bricks cannot withstand larger loads.
Ordinary magnesia brick: sintered magnesite is used as raw material, and it contains about 91% of MgO. It is a magnesium refractory brick directly combined with silicate. This is a magnesia brick that is widely produced and used.
Directly bonded magnesia brick: Made from high-purity sintered magnesia, which is made by sintering. With more than 95% MgO, it is a magnesia refractory brick directly bonded between periclase grains.
Magnesia Refractory Bricks Manufacturer
Rongsheng Refractory Manufacturer is a brand manufacturer with more than ten years of production, sales and R & D experience. Our products have passed ISO9001 quality certification, and have been sold to more than 60 countries and regions in the world. Choosing a magnesia bricks manufacturer, Rongsheng not only provides you with high-quality products, but also has refractory projects in Russia, Kazakhstan, Pakistan, India, Indonesia, Egypt, South Africa, Chile and other countries. If you need refractory brick products, like magnesia bricks, magnesia chrom brick, magnesia alumina brick, magnesia spinel brick, etc., please contact us. We will reply to you as soon as possible.