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Bottom electrode structure of DC are furnace

A DC electric arc furnace and furnace bottom electrode technology, which is applied to electric heating devices, electrical components, heating by discharge, etc., can solve the problems of increased operating cost, short circuit, shortened service life of parts, etc. of DC electric arc furnace smelting

Inactive Publication Date: 2005-03-09
东和钢铁企业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the molten metal inside the furnace body 10 and the electrode 14 are in different phases in potential during the smelting process, when the lead liquid touches the electrode 14, it will cause a short circuit, shorten the service life of related parts, and cause a DC arc The cost of furnace smelting operation increases. Generally speaking, the average service life of the electric arc furnace designed by CELCIM is about 1,500 furnaces. When it is close to this limit, it is necessary to check the actual use situation and replace the furnace bottom electrode at an appropriate time.

Method used

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  • Bottom electrode structure of DC are furnace
  • Bottom electrode structure of DC are furnace
  • Bottom electrode structure of DC are furnace

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Embodiment Construction

[0023] Please refer to the accompanying drawings, especially FIG. 2 , which shows the relationship between the bottom electrode assembly 114 of the DC electric arc furnace of the present invention and the furnace body 10 of the electric arc furnace. Bottom electrode assemblies 114 pass through the perforations 20 provided on the bottom 16 of the electric arc furnace, and each bottom electrode assembly 114 is provided with a flange structure 122 for bolts 24 to pass through to connect the bottom electrodes. Assembly 114 is secured to furnace floor 16 . The furnace bottom 16 is connected to the opening 28 on the bottom surface of the furnace body 10 by means of the bolt 26 , so that the furnace bottom electrode assembly 114 penetrates into the furnace body 10 .

[0024] Such as Figure 3 to Figure 5 As shown, each furnace bottom electrode assembly 114 includes a long electrode body 130, the lower half of which is provided with a ring 132, in which a cooling liquid circulation p...

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Abstract

A bottom electrode structure of DC arc furnace is composed of metal rod as main body of electrode for inserting it into hole on furnace bottom, lower annular edge, link seat consisting of circular recepting slot, internal flange and external flange and linked to lower surface of annular edge via internal flange and screw bolts, linking flange between external flange and furnace bottom, and insulating ring on the lower surface of linking flange and annular edge. Said link seat and linking flange are fixed to furnace bottom.

Description

technical field [0001] The invention relates to an improvement of a bottom electrode structure of a DC electric arc furnace, in particular to a bottom electrode structure of a DC electric arc furnace with long service life. Background technique [0002] The electric arc furnace is a metal smelting equipment well known in the general metal smelting industry. Generally speaking, a DC electric arc furnace is equipped with a furnace top electrode and a furnace bottom electrode inside the furnace body, and an appropriate electric power is applied between them to generate an arc to melt the metal material placed inside the furnace body. In the prior art, the French CLECIM company proposed the design of its DC electric arc furnace in May 1991, and obtained US Patent No. 5,191,592. The technical content is as follows, in the attached figure 1 , which shows the general structure of an electric arc furnace, which includes a furnace body 10, which is provided with a furnace top electr...

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Application Information

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IPC IPC(8): H05B7/02H05B7/12
Inventor 吕林和李维彬
Owner 东和钢铁企业股份有限公司