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Continuous casting tundish for improving cleanliness of molten steel

A continuous casting tundish and tundish technology, applied in the field of deep liquid level and large-capacity tundish, can solve the problem of underutilization of the stirring effect of argon bubbles, and achieve the effect of promoting floating separation, prolonging residence time, and enhancing metallurgical effect.

Inactive Publication Date: 2012-12-12
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tundish with the air curtain retaining wall mainly utilizes the cleaning effect of argon bubbles, but does not fully utilize the stirring effect of argon bubbles

Method used

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  • Continuous casting tundish for improving cleanliness of molten steel
  • Continuous casting tundish for improving cleanliness of molten steel
  • Continuous casting tundish for improving cleanliness of molten steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and image 3 As shown, a continuous casting tundish for improving the cleanliness of molten steel includes a slag retaining wall 1, an overflow groove 2, a ladle nozzle 3, a tundish main body 4, a tundish outlet 5, a dam 6, and a ventilating brick 9 composition.

[0038] The lower nozzle 5 of the tundish is installed on one side of the bottom of the main body 4 of the tundish; The sliding nozzle at the bottom of the ladle above the area 10, the lower end is immersed in 8mm-15mm below the molten steel surface of the tundish); the dam 6 is installed at the bottom of the main body 4 of the tundish. The slag retaining wall 1 is installed between the ladle shroud 3 and the dam 6 , and the slag retaining wall 1 divides the tundish 4 into two parts, the pouring impact area 10 and the pouring area 11 . The slag retaining wall 1 is trapezoidal with a large upper part and a smaller lower part, both sides are connected with the two side walls of the tundish main ...

Embodiment 2

[0042] Such as figure 2 and Figure 4 As shown, a continuous casting tundish for improving the cleanliness of molten steel includes a slag retaining wall 1, an overflow groove 2, a ladle nozzle 3, a tundish main body 4, a tundish outlet 5, a dam 6, and a ventilating brick 9 composition.

[0043] Two tundish nozzles 5 are installed on both sides of the bottom of the tundish main body 4; the large ladle shroud 3 is installed on the sliding nozzle at the top ladle bottom of the tundish main body 4 (the upper end of the large ladle shroud 3 is installed in the middle On the sliding nozzle at the bottom of the ladle above the impact area 10 of the injection flow, the lower end is immersed in 8mm-15mm below the molten steel surface of the tundish); two dams 6 are installed at the bottom of the main body 4 of the tundish. Two slag retaining walls 1 are installed between the ladle long nozzle 3 and the dam 6, and the slag retaining wall 1 divides the tundish 4 into an injection imp...

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Abstract

The invention discloses a continuous casting tundish for improving cleanliness of molten steel and belongs to the field of ferrous metallurgy technology. The continuous casting tundish comprises a tundish, porous bricks, an overflow groove, a slag blocking wall and a dam. The continuous casting tundish for improving cleanliness of molten steel provided by the invention makes full use of the double effects of argon foam stirring and cleaning, is safe, practical, simple and convenient, can obviously improve the separation effect of impurities and gases in the molten steel and improve the cleanliness of the molten steel and the quality of billet steel and the like.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and relates to a continuous casting tundish for improving the cleanliness of molten steel, in particular, it is suitable for deep liquid level and large-capacity tundishes. Background technique [0002] With the rapid development of metallurgical technology and the further improvement of users' requirements for steel cleanliness and quality, the continuous casting tundish, as the last container for liquid steel in the steelmaking production process, has been used only as a storage and distribution of molten steel. The simple container of the reactor is transformed into a reactor with metallurgical functions such as uniform molten steel composition and temperature, preventing secondary oxidation, removing steel inclusions, purifying steel, and microalloying. At the same time, people have developed a number of tundish metallurgical technologies: such as the use of large-capacity t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/00
Inventor 李法兴裴建华张伟孙永喜马佐仓杜国强窦圣朋王立君时振明
Owner SHANDONG IRON & STEEL CO LTD
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