Ladle automatic drainage device

Abstract

The invention provides a ladle automatic drainage device, and belongs to the technical field of a drainage device in iron and steel smelting. The ladle automatic drainage device comprises a cylinder body and drainage material which has a single-layer or multilayer structure. The cylinder body is a prefabricated thin-wall steelwork. The top part of the cylinder body is sealed by adopting prefabricated thin-wall steel. The bottom part of the cylinder body is sealed by adopting hard low temperature melted plastics. The ladle automatic drainage device is novel in structure, easy to operate and high in automatic drainage efficiency so that a non-self-open drainage phenomenon caused by a water port cleaning problem can be completely avoided, in-tube drainage sand is not liable to be affected by damp and is not liable to be polluted by other material in ladle to affect self-open rate, and thus labor force is saved, stability performance is great and use is safe.

Description

technical field [0001] The invention belongs to the technical field of ladle drainage, and in particular relates to an automatic ladle drainage device. Background technique [0002] Ladle drainage is a key technology in iron and steel smelting. The traditional method generally uses the ladle nozzle to fill the drainage sand to realize the drainage and start pouring, which is called the sand filling method. When the drainage sand fails to automatically drain, it is necessary to use an oxygen lance to burn and blow for forced pouring. However, oxygen-rich burning and blowing will increase the oxygen content of molten steel and cause steel degradation. If the burning and blowing time is too long or the burning and blowing fails, will result in a production stoppage. Therefore, the automatic drainage rate is an important indicator to evaluate the quality of drainage agents. The drainage sand with excellent performance and high automatic drainage rate can realize the full prote...

AI Technical Summary

Problems solved by technology

[0004] Ⅰ: The nozzle of the ladle is not cleaned up, and there is steel slag remaining in it. After sand filling, the residual steel slag and the drainage sand are mixed, and are bonded together by the heating of molten steel, blocking the nozzle, resulting in drainage failure;

[0005] Ⅱ: When the drainage sand is filled with sand, a complete arc-shaped dune cannot be formed, or the arc-shaped dune is damaged by factors such as alloy injection, resulting in drainage failure;

[0006] Ⅲ: No pipeline introduction method, limited by the site conditions, the simple manual method of adding sand will also lead to a decrease in drainage rate;

[0007] Ⅳ: The long time for refining and waiting for steel leads to a decrease in the drainage rate;

[0008] Ⅴ: The performance of the drainage sand is changed due to the damp or pollution of the drainage sand

[0009] In conclusion, there are many factors affecting the failure of pouring in the traditional ladle drainage sand filling method, and the stability of pouring rate is poor.

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