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Layout method for preventing oxidation of dust collector in ladle refining treatment process

A ladle furnace refining and dedusting device technology, applied in the field of medium and thick plate steelmaking, to achieve temperature balance, reduce secondary oxidation, and improve cleanliness

Inactive Publication Date: 2015-09-23
SHOUGANG CORPORATION
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  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a method for arranging the anti-oxidation dust removal device in the refining process of the ladle furnace, which solves the problems of reducing secondary oxidation, improving the reducibility of slag, reducing the consumption of deoxidizer aluminum, and improving the cleanliness of molten steel

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  • Layout method for preventing oxidation of dust collector in ladle refining treatment process
  • Layout method for preventing oxidation of dust collector in ladle refining treatment process
  • Layout method for preventing oxidation of dust collector in ladle refining treatment process

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Embodiment 1

[0016] A method for arranging a dust removal device for preventing oxidation during the refining process of a ladle furnace;

[0017] Rearrange the suction port of the dust removal device. The new layout includes 4 suction ports, the molten steel capacity of the ladle furnace is 100t, and the diameter of the suction port main pipe is D=(4V / 3600*3.142*v)^0.5 , where; the flue gas flow V is 30m 3 / h; the flue gas velocity v is 14m / s, then the pipe diameter D is 1.21m, and the sum of the cross-sectional area of ​​the newly arranged suction ports is the same as the cross-sectional area of ​​the main pipe, so the diameter of each newly arranged suction port is 0.605m. When the dust removal system is turned on, the dust and protective gas (Ar gas) will be sucked into the dust removal system, and the air on both sides of the ladle furnace will also be sucked into the dust removal system evenly. Due to the installation of 4 suction ports, the dust removal power is reduced by 21%. , t...

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Abstract

A layout method for preventing oxidation of dust collector in ladle refining treatment process belongs to the technical field of medium and heavy plate steel-making. The specific steps are as below: the intake ports of the dust collector is increased to 2-8; the diameter of an intake port duct is that D equals to (4V / 3600*3.142*v)^0.5; the cross-sectional area of the intake port is arranged the same as the cross-sectional area of the duct; when the dust collector is started, dust and protection gas Ar are is sucked into the collector, while air on both sides of a ladle furnace is sucked into the dust collector uniformly. The invention has the advantages of lowering secondary oxidation, improving slag reductibility, reducing consumption of a deoxidizer aluminum, and improving the cleanliness of molten steel.

Description

technical field [0001] The invention belongs to the technical field of medium and heavy plate steelmaking, and in particular relates to a method for arranging an oxidation prevention and dust removal device during the refining process of a ladle furnace. Background technique [0002] Ladle furnace refining plays a very important role in the steelmaking process, but at present, during the ladle furnace refining process, the upper dust removal system is close to the edge of one end of the ladle. Under the premise of ensuring the dust removal rate, the dust removal system will A large amount of air is sucked in, resulting in an increase in the oxidation of the slag, and an increase in the amount of aluminum used as a deoxidizer in the steel. The increase of oxidation in slag will reduce the reduction ability of slag, and at the same time, it will increase the aluminum loss in steel and reduce the cleanliness of molten steel. If the oxidation in slag is properly ensured, the dus...

Claims

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Application Information

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IPC IPC(8): C21C7/00C21C7/06F27D17/00
Inventor 初仁生刘金刚李战军郝宁马长文
Owner SHOUGANG CORPORATION
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