Electric Arc Furnace Charging

Electric Arc Furnace Charging
Points : Electric Arc Furnace Charging, Definition Electric Arc Furnace Charging Steel scrap and a small amount of carbon and limestone are dropped into the electric furnace through the open roof. Electric furnaces can also be charged with 100 percent scrap. The roof is then closed and the electrodes are lowered. Power is turned on and within a period of about two hours the metal melts.
The current is shut off, the electrodes are raised, the furnace is tilted, and the molten metal is poured into a ladle, which is a receptacle used for transferring and pouring molten metal. Electric furnace capacities range from 60-90 tons of steel per day. The quality of steel produced is better than that of open hearth or basic oxygen steels. For smaller quantities, electric furnaces are of the induction type. The metal is placed in a crucible, which s a large pot made of refractory material, surrounded with a copper coil through which alternating current is passed. The induced current in the charge melts the metal. These furnaces are also used for re-melting metal for casting.