Ultra low carbon special molten steel ladle insulation insulation

摘要

In the present invention, the molten steel refined in the LDS (Linze Donawitze Stirring) converter process is applied to the upper part of the upper slag of the molten steel in order to prevent the temperature change and to prevent the component change of the ultra low carbon and specially refined molten steel contained in the ladle. It relates to ladle insulation thermal insulation material, which prevents the change of composition and keeps warming force by using MgO system to prevent molten steel and external air and prevents the increase of heavy nitrogen (N), absorbing slag of alumina and erosion resistance against magnesia The purpose of the present invention is to provide an excellent thermal insulation material and to prevent component change in the excellent ultra low carbon steel and special steel ladle.;The present invention provides an MgO system for preventing component changes and temperature drop of molten steel contained in a ladle made of magnesia and preventing impregnation of impurities and slag of slag in slag upper slag contact area for casting of molten steel. Insulation insulation, followed by weight% MgO: 35-50%, CaO: 10-20%, SiO ₂ : 10-20%, Al ₂ O ₃ : 5-10%, Carbon: 5-10% It comprises a component unavoidably contained in the manufacturer basicity (CaO / SiO ₂₎ is a hayeoseo to 2.5 to 3.5.