The invention discloses a method for quick
deoxidization in the
smelting process of a
ladle furnace (LF). The method comprises the following steps: (1) adding aluminum iron containing 40% of aluminumat a time after
molten steel enters the
ladle furnace (LF), so that the aluminum content in the
molten steel reaches 0.04%-0.05%, and adding 150 kg of low aluminum
slag balls, and 2-2.5 kg of active
lime per
ton of steel; (2) powering on and slagging, powering on for 3-5 times, adding 0.2 kg of
molten steel deoxidizing agents per
ton of steel, powering on for 5 min, melting top
slag, and then powering off; (3) adjusting
argon gas flow such that the
diameter of the
slag face blown by
argon gas is 450-500 mm, adding 1-1.5 kg of the low aluminum slag balls per
ton of steel, and 0.4 kg of the molten steel deoxidizing agents per ton of steel, stirring the mixtures for 15-20s, and then adding 1-1.5 kg of the low aluminum slag balls per ton of steel and 0.4 kg of the molten steel deoxidizing agents per ton of steel if the
deoxidization effect is poor; stirring the mixtures for 15-20s, till the section of the top slag is yellowish white, namely that the
deoxidization is finished; and adjustingthe
argon gas flow to 100-150 L / min in time, and performing subsequent operation. According to the method disclosed by the invention, not only the quick deoxidization of molten steel in the smeltingprocess is achieved, the output of inclusions in the
smelting process is reduced, and the quality of steel billets is improved, but also the
thermal efficiency in the power-on heating process is improved, and the
power consumption and slag consumption are reduced.