Electric arc furnace top and bottom blowing system and smelting process using this system
A top-bottom blowing and electric arc furnace technology, which is applied in the field of smelting technology and electric arc furnace blowing system, can solve the problems of easy water leakage at the gun head, influence on smelting time, and small reaction area, so as to improve metallurgical reaction conditions and oxygen utilization rate, the effect of increasing the metal yield
Active Publication Date: 2016-02-03
武汉嘉特重型设备有限公司
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Problems solved by technology
The position of the oxygen lance on the furnace wall is fixed, which cannot adapt to the change of the molten steel level after the furnace lining and bottom are eroded
Moreover, the oxygen supply capacity of the furnace door oxygen lance is slightly lower, the angle is fixed, the reaction area is small, and the lance head is prone to water leakage, which may easily cause scrap steel to splash on the furnace wall and furnace cover, affect the smelting time and cause safety accidents such as large boiling
Method used
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Embodiment Construction
[0020] In order to better understand the present invention, the invention will be described in detail below in conjunction with the accompanying drawings and specific examples.
[0021] According to the deficiencies in the prior art, the present invention provides a top-bottom blowing system and smelting process used in electric arc furnace steelmaking equipment, which is a brand new electric furnace blowing system and process that does not consume electric energy.
[0022] Please refer to figure 1 , the electric arc furnace top and bottom blowing system of the preferred embodiment of the present invention includes an electric furnace top oxygen blowing lance system 100 and a bottom blowing stirring system 200, and the electric furnace top oxygen blowing lance system 100 is arranged above the electric arc furnace 300, and the Oxygen flow is sprayed on the surface of the molten steel in the furnace 300 , and the bottom blowing stirring system 200 is arranged below the electric ...
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The invention provides an electric-arc furnace top and bottom blowing system. The electric-arc furnace top and bottom blowing system comprises an electric-arc furnace top oxygen blowing gun system and a bottom blowing stirring system. The electric-arc furnace top oxygen blowing gun system is arranged above an electric-arc furnace and jets oxygen flows to the surface of molten steel inside the electric-arc furnace at the supersonic speed from above. The bottom blowing stirring system is arranged below the electric-arc furnace and conducts stirring and ventilation on the molten steel inside the electric-arc furnace from the bottom portion. The invention further provides a smelting technology with the electric-arc furnace top and bottom blowing system adopted. In the electric-arc top and bottom blowing system and the technology, a top oxygen blowing gun is used for oxygen blowing, decarburization and temperature rising, and the bottom blowing stirring system is used for accelerating smelting pool heat transmission and mass transfer, so that the effects of improving the smelting reaction conditions, the oxygen utilization rate, the yield of metal, the quality of the molten steel and the like are achieved.
Description
【Technical field】 [0001] The invention relates to the field of metallurgy, in particular to an electric arc furnace blowing system and a smelting process using the system. 【Background technique】 [0002] In the production process of electric arc furnace steelmaking, high energy consumption per ton of steel is one of the current problems in steelmaking enterprises. In order to reduce the energy consumption per ton of steel, it is generally used to increase the input of oxygen to improve the combustion efficiency of the electric arc furnace, so as to save energy and reduce consumption. Therefore, oxygen blowing is an important process in the process of electric arc furnace steelmaking. [0003] In the existing electric furnace steelmaking process, the main smelters are mainly electric furnace power transmission, furnace wall oxygen lance and furnace door oxygen lance blowing. The cost of this process is significantly higher than that of converter steelmaking when the market p...
Claims
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IPC IPC(8): C21C5/52
CPCY02P10/20
Inventor 吴继银
Owner 武汉嘉特重型设备有限公司