Converter steel ladle bottom argon blowing automatic control system

Abstract

The invention relates to the improvement of a converter steel ladle bottom argon blowing automatic control system. The converter steel ladle bottom argon blowing automatic control system is characterized by comprising a system main module, a tapping stage judgment module, an argon station stage judgment module, a gas amount adjusting module, a pipeline on-off module and a manual control module. The converter steel ladle bottom argon blowing automatic control system has the advantages that standard operation of converter argon blowing is achieved, the argon blowing effect is improved, and therefore the purity degree of molten steel is increased; molten steel composition segregation and continuous casting flocculant flow caused by non-in-place or nonstandard argon blowing due to manual reasons are reduced; argon blowing is managed in a refined manner, and argon moving and manual waste are eradicated; and convenience is brought to all-procedure accident analysis, and process management dead zones are eliminated.

Description

technical field

[0001] The invention relates to an improvement of an automatic control system for blowing argon at the bottom of a converter ladle. Background technique

[0002] The existing oxygen top-blown converter steelmaking process is as follows: According to the batching requirements, first put scrap steel into the furnace, then pour molten iron, and add appropriate amount of slagging materials (such as lime, dolomite, etc.). After feeding, the oxygen lance is inserted into the furnace from the top of the furnace, and oxygen (high-pressure oxygen flow with a purity greater than 99%) is blown in, so that it directly reacts violently with the hot molten iron in the furnace to remove C, Si, Mn, P, S and other impurity elements. After removing most of the sulfur and phosphorus, when the composition and temperature of the molten steel meet the requirements, the blowing is stopped and the steel is lifted out. Various alloys and deoxidizers are added during the tapping pro...