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Product advantages and advantages of electric furnace spray supplement

Product advantages and advantages of electric furnace spray supplement

During the smelting process, the electric arc furnace spray material is subjected to the same high temperature and harsh working environment as the repaired furnace lining. Therefore, in addition to high refractoriness, anti-erosion, anti-erosion, anti-spalling and other properties, the electric arc furnace spray material must also be adapted to the repaired furnace lining. The lining has good adhesion.

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2024

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$How to choose matching refractory clay for refractory bricks made of different materials$

How to choose matching refractory clay for refractory bricks made of different materials

Refractory bricks are commonly used in high alumina, clay, magnesia, silicon carbide, light weight, etc. When building refractory bricks of different materials, the refractory clay with bricks must be made of the same material as refractory bricks.

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2024

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05

$Research and application of low carbon and carbon free refractory for ladle$

Research and application of low carbon and carbon free refractory for ladle

Magnesia carbon brick is still the most widely used steel-making refractory because of its high cost performance. Magnesia carbon brick has great advantages of erosion resistance and spalling resistance, but also has the disadvantages of poor thermal insulation and easy carburizing to ultra-low carbon steel water. With the specialization and subdivision of smelting steel requirements, higher requirements are put forward for refractory materials. Low-carbon and carbon-free refractories can effectively reduce the amount of carbonization of molten steel, reduce the temperature of the ladle shell, and reduce the superheat of molten steel. Improving quality and reducing costs will be the future development of the metallurgical industry.

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2024

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05

Application of unfired alumina-magnesia brick and alumina-magnesia-carbon brick in ladle lining

Application of unfired alumina-magnesia brick and alumina-magnesia-carbon brick in ladle lining

Unfired alumina-magnesia brick is a new type of refractory material, which has the advantages of high refractoriness, high strength and high wear resistance. The application of unburned alumina-magnesia bricks in the ladle lining can effectively improve the purity of molten steel, reduce the impurity content in molten steel, and improve the quality of steel.

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2024

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05

Performance advantages of magnesia carbon brick

Performance advantages of magnesia carbon brick

The advantages of magnesia carbon brick are: slag erosion resistance and good thermal shock resistance. The disadvantage of previous MgO-Cr2O3 bricks and dolomite bricks is that they absorb slag components and produce structural spalling, resulting in advanced damage to magnesia-carbon bricks. By adding graphite, this disadvantage is eliminated. Its characteristic is that slag only penetrates into the working surface, so the reaction layer is limited on the working surface., Less structural spalling and long service life.

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2024

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05

$What is the high temperature structural strength of refractory materials?$

What is the high temperature structural strength of refractory materials?

High temperature structural strength refers to the resistance of refractory products to withstand pressure at high temperatures without deformation. It is often evaluated by the softening temperature of the load. The so-called load softening temperature refers to the temperature at which the refractory material is heated at a certain heating rate under 0.2 pressure, and the temperature at which the sample begins to deform and the temperature at which the compression deformation reaches 4% or 40%. The temperature of the former is called the starting humidity of load softening, and the latter is called the softening point of load softening 4% or 40%.

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2024

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05

Factors affecting the softening temperature of the load (high temperature structural strength).

Factors affecting the softening temperature of the load (high temperature structural strength).

Clay brick load deformation from the beginning to failure, the temperature range is very wide, silica brick is very small. This shows that the main factors affecting the softening temperature of the load are the chemical mineral composition of the product, the crystal structure, the number ratio of the phase and the viscosity of the liquid phase when they melt. Therefore, we improve the purity of raw materials in the production process, improve the firing temperature to promote crystal condensation and growth, add to improve the crystal structure of the external material to improve the load softening temperature, in addition, increase the molding pressure to promote the product close, increase the coarse particles can also improve the starting deformation temperature.

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2024

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