The invention relates to an electric furnace
smelting process for low carbon and low
silicon steel, which comprises in series a electric furnace
smelting process, a LF
ladle furnace refining working procedure and a
continuous casting working procedure; wherein, the refining
slag adopted in the refining working procedure is CaO-Al2O3-CaF2 in which the content of CaO is 55 percent to 60 percent, the content of Al2O3 is 15 percent to 20 percent and the content of CaF2 is 1 percent to 5 percent, the content ratio of CaO and SiO2 is larger than 100; 50 percent to 60 percent Al2O3 complex slagging medium is added into the
ladle at the prophase the refining, the addition of the slagging medium is 3 to 4 kg per
ton steel, and the
alkalinity of the
slag in the
ladle is adjusted; before the refining working procedure is over, the feed quantity of the wire feeding is less than 3m pre
ton steel, and then the soft blowing procedure lasts 10 minutes after the wire feeding and the
sedation lasts 5 to 10 minutes, the white slat in the furnace is kept for 10 minutes before tapping; in the
continuous casting working procedure, the long
nozzle of the ladle utilizes shielding
argon gas and is sealed by
aluminum silicate fiber felt sealing
gasket, the overheat of the furnace shift and the first furnace in
continuous casting is less than 50 degrees C and the overheat of the other continuous
casting furnace is less that 30 degrees C. The electric furnace
smelting process for low carbon and low
silicon steel has the advantages of concise craft and low cost and can be used to produce low carbon low
silicon steel.