Control method and device for residual steel amount of steel ladle and storage medium

Abstract

The invention provides a control method and device for the residual steel amount of a steel ladle and a storage medium. The method comprises the steps that the residual height of molten steel in the steel ladle is obtained through detection during pouring of the steel ladle; when the remaining height is smaller than the preset height, the reference opening degree of a sliding nozzle of the steel ladle is determined based on the steel passing amount of a crystallizer; according to the remaining height, the reference opening degree and a preset relation, the target opening degree, corresponding to the remaining height, of the sliding nozzle is determined, and the preset relation is the corresponding relation between the ratio of the opening degree of the sliding nozzle to the reference opening degree and the molten steel height; and the opening degree of the sliding nozzle is adjusted to the target opening degree. According to the scheme, the size of the molten steel vortex is controlled by adjusting the opening degree of the sliding nozzle, so that the amount of steel slag rolled into the vortex is controlled, and the residual steel amount of the steel ladle is reduced.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a method, device and storage medium for controlling the remaining steel amount of a ladle. Background technique [0002] During the pouring of the ladle, as the pouring of the ladle progresses, the liquid level of the molten steel in the ladle and the static pressure of the molten steel gradually decrease. Under the condition of the same opening of the ladle sliding nozzle, the amount of steel passing through the ladle will gradually decrease. In the prior art, in order to ensure that the liquid level of the tundish remains unchanged, the opening of the sliding nozzle of the ladle will gradually increase with the prolongation of the pouring time of the ladle. The vortex formation of the molten steel increases the critical height of the vortex, leading to the advance of the ladle slag. [0003] Due to the strong oxidation of steel slag, it is harmful to the cleanliness of mol...

AI Technical Summary

Problems solved by technology

In the prior art, in order to ensure that the liquid level of the tundish remains unchanged, the opening of the sliding nozzle of the ladle will gradually increase with the prolongation of the pouring time of the ladle. The vortex formation of the molten steel increases the critical height of the vortex, leading to the advance of the ladle slag

[0003] Due to the strong oxidation of steel slag, it is harmful to the cleanliness of molten steel. In order to ensure the cleanliness of molten steel, the slag is generally reduced as much as possible in the prior art, which will cause an increase in the amount of remaining steel in the ladle, thereby increasing the cost of steelmaking.

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