A new type of blanking column for a heat-loading energy-saving sealed submerged arc furnace and its manufacturing method

Abstract

A new type of blanking column for a hot-loading energy-saving sealed submerged arc furnace is characterized in that the new type of blanking column includes a non-metallic blanking column, and the top of the non-metallic blanking column is connected to a connecting flange of a support seat, and the non-metallic blanking column A reinforced grid of heat-resistant metal is embedded in the column body of the feeding column. The invention has the characteristics of anti-oxidation and high temperature resistance, long service life, non-conduction, non-magnetic conduction and the like. The invention has the advantages of small thermal expansion coefficient, high strength, high hardness, erosion resistance, good high temperature chemical stability, anti-oxidation, etc., and at the same time, the non-metallic material is non-conductive, non-magnetic, safe and reliable; heat-resistant metal reinforced grid and non-metallic The linear expansion coefficients of the materials in the feeding column cavity have certain differences, and the high-temperature-resistant insulating coating separates them to reduce the thermal stress caused by temperature changes; at the same time, the high-temperature-resistant insulating coating improves the insulation 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 cas...

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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