An improved process for denitrogenation of steel and in particular to a process for denitrogenation of low carbon steel by gas generation in-situ. The improved process comprising subjecting the liquid steel to treatment with carburized iron and thereby generate carbon monoxide gas in situ such as to provide large interfacial area and requisite low partial pressure of nitrogen at the reaction site and effectuate removal of nitrogen. In the above process gas is generated in situ inside the liquid steel bath by reaction of oxygen present in the steel with carbon which is present in carburized iron added to the bath. Oxygen in steel reacts with carbon and carbon monoxide gas is generated in situ in the form of large number of tiny bubbles which provide large interfacial area and requisite low partial pressure of nitrogen at the reaction site. The process thus provides for an alternative approach to reduce nitrogen content of steel under atmospheric conditions and without having to use expensive fluxes. The above process of denitrogenation of steel further assist in deoxidation of the steel tapped from BOF. The process is simple and can be attended without the need for expensive equipment and/or expensive special fluxes.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents

ERegister / Renewals Ceased