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Hello everyone, I am the youngest girl in the factory. 
It's time for the popular science class again.
Today we are going to talk about the reasons and solutions 
for the damage of the lining of the intermediate frequency furnace.
The main influencing factors that damage the furnace lining are: chemical corrosion of slag,
 spalling of refractory material structure 
and thermal corrosion.
1) The lining material should have the characteristics of 
high thermal strength, low air permeability and low porosity.
2) The initial failure of the lining is due to 
the front end corrosion caused by the dissolution of 
the sintered layer of refractory lining in the slag, 
and the occurrence of cracks due to the cyclic change of temperature. 
Another factor that causes crack propagation in the overall lining is
 the stress caused by the different expansion coefficients 
between the "three belts" caused by 
heating to too high a temperature.
3) The life of the furnace lining depends on the correct operation, 
including the inspection of the lining body 
and the application of "refill material" to repair the cracks that 
appear in time to prevent molten steel and slag from 
penetrating into the furnace lining matrix.
4) Furnace lining slag can be effectively solved with SlagR.
Follow me, the youngest girl in the factory, 
see you in the factory next week!


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