Impressed electric field pollution-free deoxygenation refining method and device for ladle furnace

A technology of external electric field and ladle furnace, applied in the field of metallurgical refining process, can solve the problems of unsatisfactory deoxidation depth and deoxidation speed, affecting steel quality and performance, non-metallic inclusions polluting molten steel, etc.

Inactive Publication Date: 2008-08-06
SHANGHAI UNIV
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Problems solved by technology

The traditional deoxidation method inevitably introduces a large number of non-metallic inclusions to pollute the molten steel, seriously affecting the quality and performance of the steel
Some metallurgists are devoting themselves to the research of pollution-free deoxidation methods. The

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  • Impressed electric field pollution-free deoxygenation refining method and device for ladle furnace

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Embodiment 1

[0015] Referring to Figure 1, this special device includes: DC power supply system 1, anode lifting device 2, furnace atmosphere space 3, anode 4, slag 5, electromagnetic heating system 6, oxygen measuring instrument 7 and 14, temperature measuring instrument 8 , molten steel 9, air blowing stirring device 10, cathode 11, automatic data recording analyzer 12 and ladle furnace 13. In the furnace atmosphere space 3 at the top of the ladle furnace 13, an anode lifting device 2 is arranged in the center. The cross bar of this elevating device 2 is equipped with some graphite rod anodes 4 arranged vertically in parallel, and the lower end part of the anode 4 is inserted in the molten slag 5 of upper part in the furnace; Adjustment; the bottom of the molten steel 9 in the furnace is provided with evenly dispersed and spaced cathodes 11; the anode 4 at the top and the cathode 11 at the bottom are respectively connected to the positive and negative poles on the DC power supply system ...

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Abstract

The invention relates to a method for additionally adding an electric field in a ladle furnace to deoxidate and refine without pollution and a device of the method, which belong to the technical field of the refining technology. The method is characterized in that the method comprises: additionally adding the electric field between molten steel or molten metal and molten slag in the ladle furnace, taking the molten slag as a channel which transmits dissolved oxygen in the molten steel or the molten metal outwards, applying a direct current pulse electric field between the molten steel or the molten metal and the molten slag which is on the molten steel or the molten metal, controlling the transmitting direction and the speed of oxygen atoms from a system between the molten steel or the molten metal and the molten slag, simultaneously reinforcing the mass transfer process of the dissolved oxygen in the molten steel or the molten metal, and thereby realizing deoxidation of the molten steel or the molten metal without pollution. The invention has the advantages of simple technology, convenient operation, rapid and effective deoxidation and the like.

Description

technical field [0001] The invention relates to a pollution-free deoxidation refining method and a device thereof in a ladle furnace, belonging to the technical field of metallurgical refining technology. Background technique [0002] The deoxidation operation in the smelting process is the key link. The traditional deoxidation method inevitably introduces a large number of non-metallic inclusions to pollute the molten steel, which seriously affects the quality and performance of the steel. Some metallurgists are devoting themselves to the research of pollution-free deoxidation methods. The main method focuses on the pollution-free deoxidation of solid electrolytes. However, this deoxidation method has the following disadvantages: the deoxidation depth and deoxidation speed are not ideal, the equipment requirements are complicated, and the operation is cumbersome. Costly. [0003] Pollution-free deoxidation by external electric field is a new technology of deoxidation outs...

Claims

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Application Information

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IPC IPC(8): C21C7/06C22B9/00
Inventor 张捷宇许继芳王波鲁雄刚周国治李谦李建朝柴娜
Owner SHANGHAI UNIV
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