Low density converter steel tapping slag bridge

A low-density, converter technology, used in the manufacture of converters, etc., can solve the problems of difficult to achieve common refractories, discounted slag retainers, different expansion coefficients, etc., to suppress eddy, short tapping time, and increase stability. and durability effect

Inactive Publication Date: 2007-07-18
武钢集团有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

And the adding device of the slag stopper is a very heavy and large-scale equipment, so it is difficult for the operator to add the slag stopper at the exact time, so that the effect of the slag stopper is greatly reduced
[0006] In addition, the density of ordinary refractory materials is difficult to reach 4.5g / cm 3 Therefore, iron blocks or other metal materials are added to ordinary refractory materials to counterweight when manufacturing traditional slag stoppers, but these metal materials have different expansion coefficients from ordinary refractory materials. will damage the slag stopper

Method used

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  • Low density converter steel tapping slag bridge
  • Low density converter steel tapping slag bridge
  • Low density converter steel tapping slag bridge

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0018] The low-density converter tapping slag stopper shown in Figures 1-2 has a rotary slag stopper 1 made of ordinary refractory materials with the center of gravity located on the vertical line. The rotary slag stopper 1 can be inverted Conical, hemispherical or gyro-shaped, the gyro-shaped slag retaining body 1 is shown in this illustration. The upper half of the gyro-shaped slag retaining body 1 is provided with a circular cavity 2 which is symmetrical to the mid-perpendicular and shifts its center of gravity downward. The circular cavity 2 is provided with a ventilation hole 3 leading to the top surface of the gyro-shaped slag retaining body 1 along the mid-perpendicular line. On the vertical line of the gyro-shaped slag-stopping body 1, there is a center rod 4 that penetrates up and down. The upper end of the center rod 4 passes through ...

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Abstract

The low density slag stopper for converter tapping is made of common refractory material in revolution body shaped, has cavities with vent hole communicated with the upper surface of the slag stopper and apparent density of 1.5-2.8 g / cu cm. The low density slag stopper for converter tapping has simple structure, no need of balancing iron block, easy use, good slag stopping effect and high steel tapping efficiency.

Description

technical field [0001] The invention relates to a slag retaining device for a converter steel tapping hole in a converter steelmaking equipment, in particular to a low-density converter tapping slag retainer. Background technique [0002] At present, in the process of converter steelmaking, it has become an indispensable measure to use a slag stopper at the outlet of the converter. Sulfur back to phosphorus, thereby increasing the yield of the alloy. Traditional slag stoppers have simple structures such as slag balls, slag plugs, slag sticks, and slag labels, and there are also pneumatic slag stop devices with more complex structures. Except for a small number of iron and steel enterprises using pneumatic slag retaining devices, most domestic and foreign iron and steel enterprises are still using slag retaining devices with simple structures such as slag retaining balls and slag retaining plugs. For this kind of slag stopper, whether it is in textbooks or in steelmaking en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46
Inventor 万恩同李小云高文芳邹继新杨运超饶江平李慕云
Owner 武钢集团有限公司
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