Safety protection device for continuous casting steel ladle and tundish

Abstract

The invention relates to a safety protection device for a continuous casting steel ladle and a tundish. The safety protection device comprises an oxygen burning device, a thermal spraying treatment device and a tundish impact zone protection device, wherein the oxygen burning device comprises a long nozzle holder, the long nozzle holder is clamped on a long nozzle, the thermal spraying treatment device comprises a stirring barrel, the top of the stirring barrel is fixedly provided with a stirring motor, the tundish impact zone protection device is arranged in the tundish, the tundish comprisesa shell, an insulating layer, a permanent layer and a working layer which are arranged from outside to inside in sequence, and a zone surrounded by the working layer is isolated into an impact zone and a working zone through a slag blocking wall. The safety protection device for the continuous casting steel ladle and the tundish is simple in structure and convenient to operate, slag attached to an edge opening of the steel ladle is reduced, steel slag removal is facilitated, and the impact zone of the tundish can resist erosion and flushing.

Description

technical field [0001] The invention relates to a safety protection device, in particular to a safety protection device for continuous casting ladles and tundishes. Background technique [0002] In the field of steelmaking, ladles for continuous casting are used in steelmaking plants and foundries to receive molten steel and perform pouring operations before open hearth furnaces, electric furnaces or converters. At present, after the ladle is used for a certain number of furnaces, a large amount of steel slag is easily bonded to the edge of the ladle. When there is a lot of steel slag, the driving hook is generally used to pull the steel slag off. However, this treatment method is not easy to remove steel slag, and the treatment process is time-consuming and laborious, resulting in difficulties in ladle turnover and potential safety hazards in production; [0003] In addition, due to splashing and other reasons, the long nozzle of the large bag needs to be cleaned frequentl...

AI Technical Summary

Problems solved by technology

At present, after the ladle is used for a certain number of furnaces, a large amount of steel slag is easily bonded to the edge of the ladle. When there is a lot of steel slag, the driving hook is generally used to pull the steel slag off.

However, this treatment method is not easy to remove steel slag, and the treatment process is time-consuming and laborious, resulting in difficulties in ladle turnover and potential safety hazards in production;

[0003] In addition, due to splashing and other reasons, the long nozzle of the large bag needs to be cleaned frequently during use to clean the residual steel inside to ensure smooth and stable steel flow. However, production will be interrupted during cleaning, which will bring a lot of waste to production. Reduce production efficiency and cannot guarantee multi-furnace continuous casting;

[0004] In addition, the impact area of ​​the tundish is relatively narrow. When the large ladle of molten steel comes down, the molten steel is violently tumbling here, and the erosion and erosion on all sides of the impact area, especially the corners of the impact area and the working area and the bottom are very serious. The impact of molten steel It is easy to crack the joints, which will lead to the loosening of the guard plate. The consequences of erosion and erosion are likely to cause steel penetration and molten steel to penetrate the ladle, damage equipment and cause injury to personnel, and reduce the pouring efficiency. The nozzle is inevitably involved in certain A large number of air bubbles and steel slag directly affect the quality of billet

[0005] When the large ladle of molten steel comes down, the molten steel is violently tumbling here, and the erosion and erosion on all sides of the impact zone of the tundish, especially the corners of the impact zone and the working area and the bottom are very serious, so protection is generally provided on all sides of the impact zone. However, it is usually just a simple splicing between the guard plates, so that the joints of the guard plates installed in this way are only simply coated with joint materials. After a long time of operation, the impact of molten steel will easily crack the joints. As a result, the guard plate is loose, and the consequence of erosion and erosion is that it is easy to cause steel penetration and molten steel to penetrate the ladle, damage the equipment and cause injury to personnel, and reduce the pouring efficiency; the molten steel entering the T-shaped tundish through the large ladle directly impacts the tundish At the bottom of the impact zone, there will be obvious turbulent flow, and a certain amount of air bubbles and steel slag will inevitably be involved in the nozzle, which will directly affect the quality of the billet

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