What are the key points for the selection of intermediate frequency furnace lining materials?

The selection of intermediate frequency furnace lining materials largely determines the life of the intermediate frequency furnace. Now, improving the service life of the intermediate frequency furnace lining is also the focus of the intermediate frequency furnace manufacturers, which is of great significance for customers to save cost and input. Then you know How to choose the lining material of the intermediate frequency furnace?

1, good chemical stability

Slag erosion is a common damage method for refractory materials during use, such as the lining of intermediate frequency furnaces, the working lining of ladle, and the damage to the lining of cupola furnaces from the lower part of the furnace body to the hearth, which are mostly caused by this effect. .In actual use, about 59% of the damage is caused by the erosion of slag. Slag resistance is the ability of a refractory to resist the erosion and scouring effects of slag at high temperatures.

2, good thermal shock resistance

During the use of refractory materials, they are often affected by the sharp change of the ambient temperature. For example, during the smelting of the intermediate frequency furnace, the furnace temperature changes during tapping or operation, and the temperature and pressure of the ladle will be sharply changed during the pouring process. Changes, resulting in cracks, spalling and even collapse of the lining and the lining. This damage effect limits the heating and cooling rates of the lining, the lining and the furnace, and the strengthening of the furnace operation, which is the main reason for the rapid damage of the lining and the lining. Of.

3, the thermal conductivity should be small, and the electrical conductivity should be low

During the smelting process of the intermediate frequency furnace, the temperature difference between the inside and outside of the furnace wall is very large, and about 10%-15% of the heat is lost through the furnace wall. It must have low electrical conductivity and must not contain magnetic induction substances, especially in the process of knotting the furnace lining, it is not allowed to mix metals or substances with strong electrical conductivity in it.

4, accustomed to environmental protection requirements

The furnace lining material does not release substances that are toxic, harmful and polluting the environment during the use of the furnace lining material, and the waste after use cannot cause damage to the environment.

5, cost-effective

According to the raw materials and requirements to be smelted, choose cost-effective materials. It can not only save costs, but also use suitable and safe furnace lining materials. Luoyang Yuhua is a manufacturer direct sales, with many years of production qualifications, not only has the above performance, And the price is better and cost-effective.