Method for removing slag crust in high-aluminum steel ladle

Abstract

The invention provides a method for solving a slag shell in a high-aluminum steel ladle, and relates to the technical field of steel smelting. The method for solving the slag crust in the high-aluminum steel ladle comprises the following steps: controlling the outbound aluminum content of an LF furnace to be higher than the upper limit of a judgment range by 0.5%-0.7%; fluorite is added at the outbound position of the LF furnace; after RH furnace treatment is started, a slagging agent is added; in the RH furnace treatment process, aluminum adjustment is not carried out; after the RH furnace treatment is finished, a slagging agent is added; after the RH furnace treatment is finished and the step of adding the slagging agent is finished, steel ladle capping operation is carried out immediately, so that the temperature drop loss of molten steel in a steel ladle is reduced; and controlling the standing time of the molten steel to reduce the temperature drop of the molten steel. According to the method for solving the slag crust in the high-aluminum steel ladle, the problem of the slag crust in the high-aluminum steel ladle can be effectively solved, the stability of overall production is guaranteed, and the turnover efficiency of the steel ladle is improved.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular, to a method for solving the inner slag shell of a high-alumina steel ladle. Background technique [0002] The ladle used in the production of high-alumina steel is often filled with top slag at the mouth of the ladle after casting, making it impossible for the ladle to perform slag turning operations. In such cases, it is necessary to take off the ladle cover, use a hook machine to break the shell, and then carry out the slag turning operation. The whole process is about 40 minutes longer than the normal operation, which will have a greater impact on the ladle turnover and production rhythm. SUMMARY OF THE INVENTION [0003] The objects of the present invention include, for example, to provide a method for solving the inner slag shell of a high-aluminum steel ladle, which can effectively reduce the problem of the inner slag shell, help to ensure the stability of t...

AI Technical Summary

Problems solved by technology

[0002] The ladle used in the steelmaking production process of high aluminum steel often has the phenomenon that the top slag is full of shells on the ladle mouth after casting, which makes the ladle unable to perform slag turning operation

In such cases, it is necessar

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