A slag stopper for steelmaking converter tapping slag stopper

Abstract

The invention discloses a slag baffle piston for baffling slag of steel discharged out of a steel smelting converter. The slag baffle piston comprises a slag baffle piston body and a guide rod, wherein one end of the guide rod is connected with the slag baffle piston body, and a boost wing-flanging block for offering a boost force used for enabling the slag baffle piston body to enter into a steel outlet of the converter to the slag baffle piston body is arranged on the other end of the guide rod. After the slag baffle piston is put into the converter, the boost wing-flanging block is washed by steel flow, a large boost force is generated, the slag baffle piston is quickly pulled to the position of the steel outlet, and the steel flow is quickly reduced; when the steel flow returns to normal, the position of the steel outlet is stably occupied by the slag baffle piston, and the slag baffle piston can not shift; due to a wing-flanging end face of the boost wing-flanging block, the guide rod is effectively controlled to be centered within the steel outlet, and the phenomenon of slag leakage caused by the incorrect piston position can be avoided; and the wing-flanging block is impacted by the steel flow, so that the phenomenon that the slag baffle piston automatically floats can be effectively controlled, and the unavailability of the slag stopping can be avoided.

Description

technical field [0001] The invention relates to the technical field of steelmaking auxiliary equipment, in particular to a slag stopper for steelmaking converter tapping slag stopper. Background technique [0002] In the middle and late stages of converter tapping, start the slag stop trolley and put the slag stopper into the converter. Using the principle that the proportion of molten steel is large, the proportion of converter slag is small, and the proportion of slag stopper is in between, at the end of steel tapping, all molten steel is discharged Go to the ladle under the furnace, and block the converter slag and stay in the converter to prevent the slag from entering the ladle with the molten steel. [0003] The continuous erosion of the high-temperature molten steel on the tapping port of the converter makes the tapping port become larger and larger, the tapping time becomes shorter and shorter, and the molten steel in the converter has a large fluidity. The traditio...

AI Technical Summary

Problems solved by technology

The traditional slag stopper is mostly composed of a plug body and a guide rod on the plug body. The effect of using the traditional slag stopper is not good, and it is easy to cause the slag stopper to drift. The guide rod is not centered, and it cannot be inserted and exited effectively and accurately In the steel mouth, resulting in poor slag blocking, poor slag blocking effect, and slag entering the ladle

The light ones cause large alloy loss and low recovery rate, and the severe ones cause the molten steel to return phosphorus exceeding the standard, resulting in production and quality accidents such as molten steel returning to the furnace, casting machine failure, and even waste products.

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