Dynamic deoxidization control system and method of converter

Abstract

The invention discloses a dynamic deoxidization control system and method of a converter. The dynamic deoxidization control system comprises an oxygen measurement probe, a controller and a measurementscale, wherein the oxygen measurement probe is used for measuring finishing-point oxygen content of molten steel before tapping; the controller is used for storing a corresponding relation between anadding amount of a deoxidization agent and the finishing-point oxygen content in advance; the controller is used for obtaining the adding amount of the deoxidization agent according to the finishing-point oxygen content measured by the oxygen measurement probe and the corresponding relation between the adding amount of the deoxidization agent and the finishing-point oxygen content; the measurement scale is used for weighing the deoxidization agent according to the adding amount of the deoxidization agent and adding the deoxidization agent. When the dynamic deoxidization control system of theconverter, disclosed by the invention, is used, the adding amount of the deoxidization agent can be accurately controlled through the controller; compared with the prior art, accurate deoxidization can be realized, so that the accuracy of deoxidization is improved.

Description

technical field [0001] The invention relates to the technical field of steelmaking, and more specifically relates to a dynamic deoxidation control system and method for a converter. Background technique [0002] In the aluminum-based deoxidation process, the amount of aluminum-containing deoxidizer added has a direct impact on the deoxidation effect. Too little deoxidizer is added, the molten steel is not fully deoxidized, and the oxygen content of the molten steel is high, and the molten steel needs to be further deoxidized; too much deoxidizer is added, which not only wastes costs, but also causes a large amount of Al 2 o 3 Inclusions, Al during casting 2 o 3 The inclusions are enriched on the inner wall of the nozzle and block the nozzle. At present, the aluminum deoxidation process of major steel mills is controlled by experience, and it is properly adjusted according to the carbon content (oxygen content) at the end of the converter. Accurate deoxidation cannot be a...

AI Technical Summary

Problems solved by technology

Too little deoxidizer is added, the molten steel is not fully deoxidized, and the oxygen content of the molten steel is high, and the molten steel needs to be further deoxidized; too much deoxidizer is added, which not only wastes costs, but also causes a large amount of Al 2 o 3 Inclusions, Al during casting 2 o 3 The inclusions are enriched on the inner wall of the nozzle and block the nozzle

At present, the aluminum deoxidation process of major steel mills is controlled by experience, and it is properly adjusted according to the carbon content (oxygen content) at the end of the converter. It is impossible to achieve accurate deoxidation, and there are many phenomena of insufficient deoxidation and excessive deoxidation.

Images