The ladle furnace is one of the main equipment

The LF ladle refining furnace is used to refine the molten steel in the primary furnace (electric arc furnace, converter), and can adjust the temperature of the molten steel as a process buffer to meet important metallurgical equipment for continuous casting and rolling. The ladle furnace is one of the main equipment for refining outside the furnace, and its key is to quickly produce white slag. The purpose of LF slagging is to desulfurize, deoxidize, improve alloy yield, and remove inclusions. However, in the slag-making process of aluminum-controlled steel, there are certain contradictions between desulfurization and silicon recovery, nitrogen addition and inclusion removal, which need to be considered. Quickly and stably produce reducing white slag with good fluidity and certain emulsification in LF, which is necessary for LF desulfurization, adsorption of inclusions and ensuring the quality of molten steel.

The main function of the ladle refining furnace is to heat up the molten steel and keep it warm. The molten steel obtains new heat energy through arc heating. This not only makes it possible to add alloys and adjust the composition, but also add slag to facilitate deep desulfurization and deoxidation of molten steel. Moreover, the molten steel starting temperature required for continuous casting is guaranteed, which is conducive to the improvement of the quality of the cast slab. The main function of the ladle refining furnace is also the argon stirring function. The argon is blown into the molten steel through the air-permeable bricks installed at the bottom of the ladle, and the molten steel obtains a certain stirring effect. For the entire enterprise, the application of ladle refining furnace can benefit from the acceleration of the rhythm and the improvement of efficiency.

Main functions of ladle refining furnace:

1. The function of increasing the temperature of molten steel and heat preservation. The molten steel obtains new heat energy through electric arc heating, which not only enables the addition of alloy and composition adjustment during ladle refining, but also the addition of slag material, which is convenient for deep desulfurization and deoxidation of molten steel. Moreover, the molten steel starting temperature required for continuous casting is guaranteed, which is beneficial to the improvement of the quality of dry cast slabs.

2. Argon stirring function. The argon gas is blown into the molten steel through the breathable brick installed at the bottom of the ladle, and the molten steel obtains a certain stirring function.

3. Vacuum degassing function. After the ladle is hoisted into the vacuum tank, the steam jet pump is used for vacuum degassing. At the same time, argon is blown into the bottom of the ladle to stir the molten steel, which can remove the hydrogen and nitrogen content in the molten steel, and further reduce the oxygen and sulfur content. Finally, higher purity molten steel and superior performance materials are obtained.

From the perspective of the entire enterprise, the application of ladle refining furnace can at least increase the following benefits: speed up the production rhythm and improve the overall metallurgical production efficiency. Application areas: Ladle refining furnaces are widely used in industries, steel, metallurgy and other industries