Method and device for rapidly improving cleanliness of steel ladle with cover

Abstract

The invention discloses a method for rapidly improving cleanliness of a steel ladle with a cover and belongs to the technical field of steel ladle maintenance. The method comprises the following steps that slag at an opening of the steel ladle is removed, wherein the opening of the steel ladle is made to face downwards through a crown block, the included angle between the center line of the steel ladle and the vertical line of the ground is made to be 133 degrees-137 degrees, the steel ladle with the ladle cover falls into the top end of a slag scraper from the upper part of the slag scraper, returning is conducted by 5 degrees-10 degrees when a scraper of the slag scraper is close to the slag position of the opening of the steel ladle, the scraper ejects the slag at the opening of the steel ladle to conduct slag scraping operation, after the slag at the opening of the steel ladle falls off, the crown block continues to ascend, when the position of the ladle cover is higher than the slag scraper, the steel ladle is hoisted to exit, and the slag removal operation of the opening of the steel ladle with the cover is completed. According to the method, the cleanliness of the steel ladle with the cover is guaranteed in each heat through institution measures, and meanwhile rapid and continuous production is achieved.

Description

technical field [0001] The application relates to the technical field of ladle maintenance, in particular, to a method and device for rapidly improving the cleanliness of a ladle with a cover. Background technique [0002] The technology of covering the whole process of the ladle makes the ladle have good insulation effect, can greatly reduce the tapping temperature before the furnace, reduce the temperature drop of the ladle process, and reduce the cost of smelting production, etc., so it is widely used. However, during the operation of accepting and loading molten steel in the covered ladle, the steel slag is easy to be enriched at the ladle mouth, causing serious slagging at the ladle mouth, which seriously affects the quality of molten steel; in addition, the temperature inside the ladle is too high, and the liquid slag is not clean once dumped in a short period of time. It is easy to backflow and block the air core and nozzle block, which brings hidden dangers to contin...

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Problems solved by technology

[0004] The above method has the following disadvantages: 1. There is no ladle tilting platform in the steel plant, and the steel ladle is used to hang the steel ladle by the crane for secondary dumping of steel slag. In the case of slagging at the mouth of the slag, it is difficult to completely dump it clean, and there is still the possibility of backflow blockage

2. In the process of using the ladle scraper, it is still necessary to remove the ladle cover, which brings a lot of inconvenience to the actual production on site. The process of ladle capping and uncovering takes a long time. It takes 15-20 minutes to use the traditional method of capping and uncovering. Greatly affected the driving efficiency and driving production rhythm

[0007] However, the above-mentioned patents only involve slag dumping or cleaning of ladle mouth slagging, and do not involve how to quickly improve the cleanliness of the covered ladle, and do not provide the matching and connection of slag dumping and slag cleaning processes to quickly improve the cleanliness of the covered ladle, and at the same time realize rapid continuous production solutions

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