Quick change method of converter tap hole

A tapping hole and converter technology, applied in the manufacture of converters, etc., can solve the problems of complex replacement operation, poor replacement quality, long replacement time of the converter tapping hole, etc., to ensure safety, improve compactness, and avoid sudden drop Shen effect

Active Publication Date: 2019-10-11
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a quick change method for a converter tap hole, which mainly solves the technical problems of long replacement time, complicated replacement operation and poor replacement quality of th

Method used

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  • Quick change method of converter tap hole
  • Quick change method of converter tap hole

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Embodiment Construction

[0014] The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0015] The embodiment of the present invention is to replace the taphole of a 150-ton converter. The process parameters of the replacement of the taphole in the embodiment of the present invention are shown in Table 1.

[0016] Table 1 The process parameters of tap hole replacement in the embodiment of the present invention

[0017]

[0018]

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PUM

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Abstract

The invention discloses a quick change method of a converter tap hole. The quick change method is mainly used for solving the technical problems that in the prior art, the replacement time of a converter tap hole is long, the replacement operation is complex, and the replacement quality is poor. According to the technical scheme, the quick change method of the converter tap hole comprises the steps of preparing a mounting hole for the new tap hole; mounting the new tap hole; filling a gap between the new tap hole with a refractory material and the mounting hole of the new tap hole in a converter body; and after 5-8 minutes since grouting is completed, returning the converter to a zero position, so that replacement of the new tap hole is completed. By means of the method, rapid replacementof the converter tap hole is achieved, and the replacement quality is controllable.

Description

technical field [0001] The invention relates to a method for replacing a tap hole of a converter, in particular to a method for quickly changing a tap hole of a converter, and belongs to the technical field of converter steelmaking. Background technique [0002] During the use of the converter taphole, the surface will be oxidized by the blown oxygen, free oxygen in the molten steel and FeO in the slag, and will be worn under the washing of the high-temperature molten steel, so that the diameter of the taphole will gradually expand and the amount of slag will increase. Larger, making the cleanliness of molten steel worse; when the tapping time ≤ 4 minutes, replace the tapping hole. [0003] Chinese patent CN101792842A discloses a method for replacing fillers at the taphole of a converter. By using dry repair material, it is added into the furnace by driving, and the furnace charge is automatically flowed into the gap around the tap hole by shaking the furnace, and then the f...

Claims

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Application Information

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IPC IPC(8): C21C5/46
CPCC21C5/4653
Inventor 许知松夏兆东郑毅郑开沛
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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