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A method for removing slag from ladle

A ladle and iron slag technology, applied in the field of steelmaking, can solve the problems of large amount of sulfur returned in smelting, unclean slag removal, and high loss of refractory materials, and achieve the advantages of reducing the amount of sulfur returning, improving the effect of slag removal, and improving service life. Effect

Active Publication Date: 2021-05-28
BEIJING SHOUGANG CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, the purpose of the embodiment of the present invention is to provide a ladle slag removal method, which solves the problems of high refractory material loss of current slag removal tools, unclean slag removal, and large and unsafe problems of subsequent smelting sulfur return

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  • A method for removing slag from ladle
  • A method for removing slag from ladle
  • A method for removing slag from ladle

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no. 1 example

[0031] Please refer to figure 1 , In this embodiment, a ladle slag removal method is provided, and in order to cooperate with the method, a slag blowing gun is also provided in this embodiment.

[0032] Please refer to figure 2 and image 3 , The slag blowing gun 10 includes a gun body 11, and the gun body 11 is located above the ladle 21. Specifically, the gun body 11 can be arranged vertically relative to the ladle 21, and the gun body 11 can swing at a certain angle. Consistent with the direction of rotation of the ladle 21. Specifically, the gun body 11 passes through the desulfurization mixing head platform, and has a support guide device. The gun body 11 is telescopic, for example, the telescopic speed is 15m / min, and the installation angle is generally consistent with the inclination angle of the molten iron ladle 21 when removing slag. The gun body 11 is connected with a first main pipe 12 and a second main pipe 14, the first main pipe 12 and the second main pipe 1...

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Abstract

The embodiment of the present invention provides a ladle slag removal method, the method comprising: using a slag removal machine to remove the iron slag in the ladle and the rear edge of the ladle; controlling the extension of the slag blowing gun; Open the branch pipe on the first main pipe, and blow air to the back edge of the ladle through the branch pipe on the first main pipe, so that the iron slag in the ladle is away from the back edge of the ladle; the branch pipe on the second main pipe, and blow air towards the nozzle of the ladle through the branch pipe on the second main pipe, so as to drive the remaining iron slag in the ladle to the nozzle; The slag scraper will be driven to the iron slag at the mouth to remove it. The invention solves the problem that the current slag removal tool has high refractory material loss and unclean slag removal, which leads to a large amount of sulfur returned in subsequent smelting and is unsafe.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a method for removing slag from a ladle. Background technique [0002] Hot metal pretreatment is an important measure to achieve high efficiency, high quality, low consumption, and low cost in converter production, especially hot metal desulfurization, because hot metal desulfurization is the one with the lowest cost and highest efficiency among blast furnace desulfurization, converter desulfurization, and refining desulfurization. Therefore, steel plants generally adopt molten iron desulfurization process, and different steel plants use different desulfurization processes, mainly including KR (Kambara Reactor, KR mechanical stirring method) mixing method and injection method. [0003] With product upgrading and increasing production cost pressure, many iron and steel plants are carrying out research and application of desulfurization and blowing slag removal process. Mainst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/00C21C7/072
CPCC21C7/0087C21C7/072
Inventor 孙亮刘珍童闵常杰刘风刚赵艳宇毕泽阳赵俊花
Owner BEIJING SHOUGANG CO LTD
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