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Slag nonpollution deoxygenation method capable of regulating anode oxygen partial pressure and device thereof

An oxygen partial pressure and adjustable technology, applied in the direction of reducing gas emissions, can solve the problems of restricting deoxidation efficiency, hindering slag wetting, polluting the environment, etc., to improve deoxidation efficiency, promote electrochemical reaction, and improve environmental pollution. Effect

Inactive Publication Date: 2010-11-17
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Metal materials are easily corroded by slag, and high-temperature-resistant metals are expensive
Carbon anode itself has inherent disadvantages: constant consumption, frequent replacement, polluting the environment, etc.
Only inert anodes can be used, and oxygen is precipitated at the inert anode, and the surface of the electrode is covered by a large amount of anode gas, and a layer of gas mesh is accumulated between the anode and the slag, which hinders the wetting of the slag to the electrode and blocks the current channel. The formation of anode effect restricts the further improvement of deoxidation efficiency

Method used

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  • Slag nonpollution deoxygenation method capable of regulating anode oxygen partial pressure and device thereof
  • Slag nonpollution deoxygenation method capable of regulating anode oxygen partial pressure and device thereof
  • Slag nonpollution deoxygenation method capable of regulating anode oxygen partial pressure and device thereof

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Embodiment Construction

[0018] Specific embodiments of the present invention will now be described in detail below. The method of the invention mainly realizes the purpose of deoxidizing and purifying molten steel or molten metal through its special device. see figure 1 with figure 2 , the special device used in the method of the present invention comprises: DC power supply 1, electric melting furnace insulation furnace body 2, molten steel 3, bottom electrode 4, molten slag 5, heat preservation furnace cover 6, anode degassing cavity electrode 7, anode wire 8 , atmosphere control chamber 9, air duct 10, conductive ceramics 11, porous and breathable ceramics 12, sealing member 13 and cavity 14; molten steel 3 and slag 5 are placed in the insulating furnace body 2 of the electric melting furnace; molten steel is placed in the furnace The lower layer of the body, while the slag is placed on the upper layer; a plurality of anode degassing cavity electrodes 7 are arranged on the upper part of the furn...

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Abstract

The invention relates to a pollution-free molten slag deoxidization method capable of adjusting anode oxygen partial pressure and a device thereof, and belongs to the technical field of metallurgical refining process. In the method, molten steel or molten metal is deoxidized and purified by the special device. In the method, the molten slag is taken as electrolyte, a deaeration cavity electrode inserted into the molten slag is taken as an anode, and the molten steel or the molten metal is taken as a cathode; the deaeration electrode is provided with an electrode cavity and is communicated with a vacuum chamber by a conduit; an applied DC power supply exerts direct current impulse voltage so that an electric field is formed between the molten steel or the molten metal and an oxygen electrode of the molten slag, and the conduction of oxygen ions in a molten slag system and mass transfer of dissolved oxygen in the molten steel are controlled by controlling a current value and a voltage value of the DC power supply as well as components of the molten slag. The oxygen is diffused from the molten slag to the electrode cavity and discharged by an air exhaust system by controlling the oxygen partial pressure of the electrode cavity.

Description

technical field [0001] The invention relates to a pollution-free deoxidation method and device for molten slag with adjustable anode oxygen partial pressure, and belongs to the technical field of metallurgical refining technology. Background technique [0002] With the development of modern science and technology, the requirements for the quality of various metals and steels are getting higher and higher. Oxygen in steel is a harmful element, which will adversely affect the quality of steel. In order to remove the oxygen in the steel, the traditional deoxidation method is mainly based on the direct deoxidation of the deoxidizer. create pollution. As people's requirements for the cleanliness of steel are getting higher and higher, the traditional deoxidation method can no longer meet people's requirements. Reducing or even avoiding the pollution of deoxidation products to molten steel is an important way to reduce the total oxygen content in steel and improve the surface a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06
CPCY02P10/134
Inventor 张捷宇许继芳刘恭源揭畅王波程伟玲杨帆周国治
Owner SHANGHAI UNIV
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