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Large-sized DC hollow electrode hermetic submerged arc furnace

A technology of closed mine and submerged arc furnace, which is applied in the direction of electric furnace heating, furnace cooling, etc. It can solve the problems of high power consumption of AC closed submerged arc furnace, inability to apply DC electric arc furnace, and large electrode consumption, etc., to achieve good ventilation, Eliminate potential safety hazards and reduce power loss

Active Publication Date: 2008-09-10
北京平希节能环保科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a large-scale DC hollow electrode sealed submerged arc furnace, which solves the technology that the background technology DC electric arc furnace cannot be applied to submerged arc furnaces and AC closed submerged arc furnaces with high power consumption, large electrode consumption, and low safety question

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  • Large-sized DC hollow electrode hermetic submerged arc furnace
  • Large-sized DC hollow electrode hermetic submerged arc furnace
  • Large-sized DC hollow electrode hermetic submerged arc furnace

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Embodiment Construction

[0034] The invention belongs to large-scale equipment in the smelting industry, and is a submerged-arc type particularly suitable for large-scale smelting and production of high-quality calcium carbide (chemical raw material products), ferroalloy (steelmaking and casting raw material), yellow phosphorus (chemical raw material) and other products. electric arc furnace.

[0035] figure 1 and figure 2 21 is a hollow electrode; 22 is a cathode water-cooled cable in the short network; 23 is an anode water-cooled cable in the short network; 24 is a DC power supply including a transformer and a rectifier circuit; 25 is the furnace wall; 26 is the common anode that is also the bottom of the submerged arc furnace; 27 is an automatic control system, which is equipped with on each electrode to control the rise and fall of the electrodes to ensure power and control sensors;

[0036] image 3 It is a schematic diagram of the furnace body structure, in which 1 is the insulation layer ma...

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Abstract

The invention provides a large-sized DC hollow electrode sealing submerged-arc furnace which solves the technical problems that the prior DC electric arc furnace can not applied to the submerged-arc furnace, the AC sealing submerged-arc furnace has high electricity consumption, great electrode consumption and low security. The technical proposal is as follows: the submerged-arc furnace comprises a DC power supply, a furnace body, a furnace cover, at least three hollow electrodes arranged inside the furnace body, an electrode lifting system, a self-control system, a cathode water-cooling cable for connecting the hollow electrodes and the DC power supply and an anode water-cooling cable for connecting the furnace body and the DC power supply, wherein, the hollow electrodes are distributed in a circle and pass through the furnace cover; a powder material transmission system is communicated with the hollow electrodes. The large-sized DC hollow electrode sealing submerged-arc furnace has the advantages of high security, high product quality, the increased output and low consumption.

Description

technical field [0001] The invention relates to a submerged arc electric arc furnace, in particular to a direct current submerged arc electric arc furnace. Background technique [0002] DC electric arc furnace technology has been widely used in steelmaking, and has made remarkable achievements in large-scale and various economic technologies, but it has been difficult to apply in submerged arc furnaces, and has been stuck in the medium and On small-scale smelting furnaces, its economic and technical indicators are not ideal. [0003] Due to the limitation of AC technology, the existing large-scale AC submerged arc furnace has no great potential to be tapped. If we want to reduce power consumption and improve various economic and technical indicators, we can only find another way. The current distribution of the bottom submerged arc furnace is uneven, which leads to uneven bottom temperature, which is not conducive to the smooth progress of the smelting process; the furnace ...

Claims

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Application Information

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IPC IPC(8): F27B14/06F27B14/08F27B14/14F27B14/16F27B14/20F27D11/10F27D3/00F27D1/00F27D1/18F27D19/00F27D21/00F27D9/00F27D17/00
Inventor 谢西平
Owner 北京平希节能环保科技有限公司
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