Novel blanking column of hot charging type energy-saving airtight submerged arc furnace and manufacturing method thereof

Abstract

Provided is a novel blanking column of a hot charging type energy-saving airtight submerged arc furnace. The novel blanking column is characterized by comprising a non-metallic blanking column body; the top of the non-metallic blanking column body is connected with a support connecting flange, and a heat-resisting metal reinforced grid is buried in the main body of the nonmetallic blanking column body. The novel blanking column has the characteristics of being resistant to oxidation and high temperature, long in service life, non-conducting, impermeable to magnetism and the like. The novel blanking column has the advantages of being small in thermal expansion coefficient, high in strength and hardness, resistant to erosion and oxidation, good in high-temperature chemical stability and the like, and meanwhile the non-metallic material is non-conducting, impermeable to magnetism, safe and reliable; certain difference exists between the linear expansion coefficient of the material of the heat-resisting metal reinforced grid and the linear expansion coefficient of the material of a cavity of the non-metallic blanking column body, and a high-temperature-resisting insulating coating separates the heat-resisting metal reinforced grid from the cavity of the non-metallic blanking column body so that heat stress generated by temperature variation can be reduced; meanwhile, the high-temperature-resisting insulating coating improves the insulating performance of the metal grid.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, and in particular relates to a novel blanking column of a heat-loading energy-saving sealed submerged arc furnace and a manufacturing method thereof. Background technique [0002] The submerged arc furnace is an industrial electric furnace that inserts electrodes into the charge for submerged arc operation, uses the energy and current of the arc to pass through the charge, generates energy due to the resistance of the charge for smelting, and continuously feeds intermittently to remove slag. In submerged arc furnace smelting, the uniform distribution of charge along the electrode is very important. Usually, a number of feeding columns are installed around the electrode to solve the problem of material distribution. Since the blanking column works in the high-temperature zone under the cover of the submerged arc furnace and is affected by the high-temperature furnace gas, the traditional ca...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a new type of blanking column of a heat-loading energy-saving sealed submerged arc furnace and its manufacturing method, which are used to solve the technical problems of existing metal columns such as easy cracks, softening, magnetization, and electric leakage.

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