Black lead electrode is main the current situation of steel-making of user electric stove

2004, with one action of crop of global crude steel breaks through 1 billion T to close greatly, among them crop of crude steel of electric steel factory is 1.5 billion T, worldwide inside the rate that electric steel place holds all is in 33% the left and right sides. Reckon global steel output will achieve 1.15 billion T 2005, among them blast furnace steel occupies 750 million T, electric steel occupies 365 million T. The main raw material of tradition of electric stove steel-making is useless steel and the other furnace charge that contain iron (iron of direct and reductive iron, hot pressing piece) , cast iron piece and hot molten iron.

2004, output of our country steel achieves 273 million T, grow 22 compared to the same period. 7% . Total steel output grows our country rate is very rapid, so that although the crucial crop of electric steel grows day and day (electric steel increase rate was 28%) 2003, the percentage that but electric steel is in,steel always holds in crop is not large however, electric steel place occupied rate to be less than 2004 20% , the manufacturing rate of domestic electric steel is fluctuant all the time in last few years in 15%〜17% , the resource scarcity that abandon steel and electric power are restricted is the two big main factors that decide at present electric steel develops our country.

Our country has electric stove about many 180, electric steel produces per year a quantity to already exceeded 40 million T, hold countrywide steel output 17% the left and right sides, the 50t above big electric furnace that at present investment runs already achieved 39, among them of above of 100t of quantity of odd furnace tapping have 10, look generous electric stove is furnace of electric arc of 150t freeboard power, the molten steel that place of big hot plate produces occupies the 2/3 of electric steel crop about. Big hot plate uses technology of furnace of tall impedance electric arc, can realize operation of tall voltage, long arc, small electric current, raise fused rate, reduce electrode to use up. The electrode of electric stove of countrywide key enterprise uses up average to be 3kg/t left and right sides, beautiful is worth the 1kg/t that is Bao Gang to control.