The current commonly used arc furnace, furnace wall and bottom furnace, the hot spot is the weak link of electric arc furnace.
Reasons for damage of the refractory at the top of the one is splashes, furnace dust erosion; second is due to the high around the electrode temperature, top temperature difference larger
caused by melt erosion and thermal shock. Commonly used in the refractory with high aluminum brick, magnesia chrome brick, dolomite brick, silica and other and relevant material of refractory pouring material or ramming material, and some also used prefabricated pieces of the roof of the furnace.
caused by melt erosion and thermal shock. Commonly used in the refractory with high aluminum brick, magnesia chrome brick, dolomite brick, silica and other and relevant material of refractory pouring material or ramming material, and some also used prefabricated pieces of the roof of the furnace.
Hot parts of furnace wall lining easy erosion, the reason is high temperature, molten steel and slag erosion, charging the impact.Refractory material is mainly used all kinds of basic refractories, the prevailing magnesia carbon brick.
The damage of the bottom is mainly due to chemical erosion and mechanical Chong, commonly used alkaline refractory ramming material or castable lining, the dry vibration material effect is good.
The overall development trend of the steelmaking electric arc furnace is the large-scale, two is 
the power unceasing enhancement, and three is the additional enhancement smelting measure. The steelmaking arc furnace of new technology: strengthening smelting enriched pulverized coal injection, bottom blowing stirring, eccentric bottom tapping, DC electric arc furnace.
the power unceasing enhancement, and three is the additional enhancement smelting measure. The steelmaking arc furnace of new technology: strengthening smelting enriched pulverized coal injection, bottom blowing stirring, eccentric bottom tapping, DC electric arc furnace.
The new technology adopted, both positive and negative influences to the refractory material, overall negative effect on refractory larger, such as ultra high power, oxygen enriched intensified smelting, bottom blowing stirring the refractory material of the more demanding conditions of use. Eccentric bottom tapping and DC arc furnaces are the conditions for the use of refractory material of furnace wall relative improvement, but conditions of use of certain parts of refractory become demanding, especially for DC arc furnace bottom lining. Therefore, the refractory industry must develop new varieties to meet the need of new technology for steelmaking arc furnace.
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