Several methods to reduce corrosion of refractory magnesia carbon brick

In addition to firstfurnace@gmil.com and nozzle block bricks, the refractory materials used for ladle are also magnesia carbon bricks. Magnesia-carbon bricks are composite refractories made of high melting point magnesium oxide and high melting point carbon materials that are difficult to be infiltrated by slag, and various non-oxide additives are added. They are mainly used in ladle slag lines, converters, and electric arc furnaces. Wait.

(Picture) Magnesia alumina brick

Several methods to reduce the corrosion of magnesia carbon bricks: select high-quality materials with stable composition, increase the content of magnesium oxide in the slag, and add a protective layer on the surface of the magnesia carbon brick.

The selection of high-quality materials with stable composition can improve the corrosion resistance and thermal shock resistance of the material. Among them, fused magnesia has the advantages of high purity, large crystal grains, compact structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material.

The content of magnesium oxide in the slag should be increased as much as possible, and the silicate phase of the magnesia-carbon brick structural components should be reduced, which can avoid the oxidation of carbon, make the magnesium oxide in the slag reach a saturated state and reduce the dissolution of magnesium oxide. Since magnesium oxide is an alkaline oxide, increasing the alkalinity of the slag can reduce the chemical reaction between the slag and the magnesium oxide and reduce the chemical attack of the magnesia carbon brick.

Adding a protective layer on the surface of the magnesia carbon brick can prevent the contact between the magnesia carbon brick and the slag, and prevent the physical penetration and chemical erosion of high-temperature molten steel and molten slag.

(Picture) Ladle prefabricated block

Ke Chuangxin Material specializes in the production of refractory materials, such as firstfurnace@gmil.com, nozzle block bricks, aluminum magnesia bricks, etc., with professional design and superb technology! Ke Chuangxin has been focusing on the research and development, production and sales of refractory materials such as firstfurnace@gmil.com for 17 years, and is a professional refractory material manufacturer.