Continuous feeding steelmaking electric arc furnace device

Abstract

The invention discloses a continuous feeding steelmaking electric arc furnace device. The continuous feeding steelmaking electric arc furnace device comprises a lower furnace body, a furnace cover, afurnace cover lifting mechanism used for driving the furnace cover to ascend and descend, an electrode lifting mechanism used for driving an electrode to ascend and descend, a feeding dust removal duct used for guiding flue gas in the furnace and conveying waste steel into the lower furnace body, and further comprises a fixed frame which is independent from the lower furnace body, wherein the furnace cover and the electrode only do lifting motion, the furnace cover lifting mechanism and the electrode lifting mechanism are both installed on the fixed frame, the furnace cover and the furnace cover lifting mechanism are connected with and cover the upper part of the lower furnace body, the furnace cover and / or the side wall of the lower furnace body are / is provided with openings / an opening, and the lower furnace body is connected with the feeding dust removal duct through the opening / openings. The device has the characteristic that continuous feeding production is carried out without opening the cover, the furnace body and the furnace cover are designed to be separated and operate independently, so that the equipment structure and the production operation mode of the whole electric arc furnace are simplified. The actions of the furnace cover and the electrode are simplified, an operation mechanism of the electric furnace body, a hydraulic driving component and the like are reduced, equipment maintenance points are reduced, and reliability is improved.

Description

Technical field [0001] The invention belongs to the technical field of metallurgy, and particularly relates to a continuous feeding steelmaking electric arc furnace device. Background technique [0002] The traditional electric furnace body equipment (including the current typical CONSTEEL electric furnace) needs to complete the operation of shaking, screwing, and rotating the electrode during the production operation, which is integrated in the electric furnace body. Its typical structure is: the furnace cover and the lower furnace body are installed together on the tilting platform; the electrode lifting mechanism and the rotating mechanism, the furnace cover lifting mechanism and the rotating mechanism are all installed on the tilting platform. Because the electric furnace must retain the function of opening the lid, and limited by the structure of the electric furnace, the electrode must be fully lifted to the highest position, the furnace lid must be lifted to the highest po...

AI Technical Summary

Problems solved by technology

Since the electric furnace must retain the function of opening the cover, limited by the structure of the electric furnace, the electrode must be fully lifted to the highest position, the furnace cover must be lifted to the highest position, and then the furnace cover must be turned at a large angle to perform operations such as feeding and maintenance. Increase the length of the electric furnace electrode cross arm, water-cooled cable, etc. and the twist during work, and increase the resistance loss in the high-current system (increase power consumption)

In addition, when tapping and slag are tilted during the production process of this electric furnace, the furnace cover and electrodes will also follow the tilting, especially the tilting of the furnace body increases the probability of electrode breakage

[0003] On the other hand, the body of a typical continuous feeding electric arc furnace generally adopts the structure of a tilting frame supported by rollers. The furnace cover and lower furnace body are installed on the tilting frame, and part of the electrode lifting mechanism is also installed on the tilting frame. During the production process, the furnace The middle furnace cover needs to complete three actions of lifting, rotating and tilting; and the electrode lifting mechanism also needs to complete at least the first two actions of lifting, rotating and tilting, which makes the operation of the furnace body more complicated, with many mechanism actions and more equipment maintenance points , increases equipment maintenance

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