What are the advantages of electric arc furnace over medium frequency furnace?


First of all, we should make clear the difference between medium frequency furnace and electric arc furnace. Medium frequency furnace is a common power frequency 50Hz AC to medium frequency (above 300 Hz to 20kHz) DC, which generates metal materials in high-density magnetic wire cutting induction coil, generates large eddy current in metal materials, and then generates heat. The temperature can generally reach 300-1300 ℃. It is mainly used for metal heat treatment and forging heating, indicating that this Dongdong design does not allow you to make steel. The melting point of steel exceeds 1500 ℃, which is obviously not enough. Medium frequency furnace steelmaking needs overload, and the blast furnace temperature is generally 2000 ℃.


Electric arc furnace: electric furnace for melting ore and metal at high temperature generated by electrode arc. The arc energy is very concentrated, and the temperature in the arc area is more than 30000 ℃. (what is electric arc? In short, it is artificial lightning with extremely high temperature. After the nitrogen charging furnace is powered on, the electric arc generates artificial lightning, which can sharply raise the furnace temperature to about 10000 degrees Celsius. You should know that the temperature of the sun's surface is only about 6000 degrees Celsius, and the central temperature can be as high as 15 million degrees Celsius.). Although they all use electricity, the principle and effect are very different.


Advantages of electric arc furnace


Compared with converter, EAF steelmaking has the advantages of short process, low investment, fast construction, outstanding effect of energy conservation and emission reduction, small equipment floor area and so on. It is estimated that electric arc furnace steelmaking can reduce 1 ton of scrap Compared with pig iron, the consumption of 7 tons of concentrate saves 60% of energy and 40% of new water, and can reduce 86% of waste gas emission, 76% of waste water, 72% of waste residue and 97% of solid emissions (including mine waste rock and tailings).


Well, the above is the introduction of relevant information about electric arc furnace. For more information about electric arc furnace, please pay attention to the official website: http://www.ayynd.com/


Key words: submerged arc furnace DC submerged arc furnace DC electric arc furnace