A method for producing low-phosphorus special steel with a converter at high speed and low consumption

Abstract

The invention relates to a method for producing low-phosphorus special steel with a converter at high speed and low consumption. By applying the slag operation in the double slag method of the converter to the single slag operation mode, the consumption of slag and iron and steel materials and the energy consumption of the single slag operation are further reduced. At the same time, the emission of waste gas and slag in the entire smelting process is further reduced; moreover, based on the short operation process and convenient production organization of the single slag method, the smelting cycle of specific low-phosphorus steels has been greatly shortened. , the controllability of the production process is significantly enhanced; in addition, this operation also provides a basis for increasing the proportion of scrap steel in the raw material structure and enhancing the applicability of the smelting method to raw materials; and the adjustment of the slag auxiliary material structure in the smelting process is more conducive to reducing the lining erosion And the stability of the furnace type has created positive and favorable conditions for the smooth operation of the production process of all steel types.

Description

technical field [0001] The invention relates to a method for producing low-phosphorus special steel with a converter at high speed and low consumption, and belongs to the technical field of metallurgy. Background technique [0002] How to achieve the economical effectiveness of dephosphorization in converter smelting of specific steel grades is a typical problem that has always been particularly prominent in converter smelting; on the other hand, the entire iron and steel industry is limited by resources and energy consumption and increasingly demanding on the environment. In the case of higher and higher conditions, how to realize the smelting of low-phosphorus special steel in the converter with the lowest consumption has obviously become a focus of industry attention and research. In addition to positive effects, it is more time-sensitive. [0003] At present, the mature technology that has been realized in this field and the related research that is being explored mainl...

AI Technical Summary

Problems solved by technology

However, due to the traditional understanding of its lack of dephosphorization ability and low dephosphorization efficiency, it is usually not considered as a smelting method for low-phosphorus special steel. Even if there is an attempt to smelt low-phosphorus special steel with single slag, slag A significant increase in volume consumption, a significant increase in end-point supplementary blowing rate, poor smelting stability, etc.