STATIC METHOD OF CONTROLLING THE REFINING REACTIONS OF PIG IRON FOR STEEL MAKING PURPOSES N OXYGEN TOP BLOWING CONVERTER

摘要

A static method of controlling the refining reactions of pig iron used for steel making purposes in an oxygen top blowing converter and in which a slag composition is achieved which, at the end of the blowing procedure, is substantially in chemical equilibrium with the molten metal(hereinafter referred to as the bath ), the composition of the bath approaching as closely as possible the desired composition of the steel, especially a steel having maximum limiting amounts of manganese and phosphorus. The method of the invention is particularly suitable for the production of a steel of a quality such that a substantial elimination of the elements accompanying the pig iron is achieved. Such steel is, for example, deepdrawing steel having a carbon content between 0.03 and 0.06% and a manganese content between 0.20 and 0.30%.