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Sealed submerged arc furnace system

A closed ore and hot furnace technology, applied in furnace, crucible furnace, electric furnace heating, etc., can solve the problems of high power consumption of AC closed submerged arc furnace, unusable DC electric arc furnace, and large environmental pollution, so as to achieve good ventilation and eliminate Potential safety hazards and high power utilization

Active Publication Date: 2009-09-16
北京平希节能环保科技有限公司
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Problems solved by technology

[0004] The object of the present invention is to provide a closed submerged arc furnace system, which solves the problem that the background art DC electric arc furnace cannot be applied to submerged arc furnaces and AC closed submerged arc furnaces with high power consumption, large electrode consumption, low safety, and large environmental pollution. technical problem

Method used

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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 It is a schematic diagram of the electrode distribution of the submerged arc furnace in the system of the present invention, wherein 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 direct current including a transformer and a rectifier circuit Power supply; 25 is the furnace wall; 26 is the common anode which is also the bottom of the submerged arc furnace; 27 is the automatic control system, which is equipped with on each electrode to control the lifting of the electrodes to ensure ...

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Abstract

The invention relates to a sealed submerged arc furnace system, and solves the problems that the existing direct current electrical arc furnace can not be applied to the submerged arc furnace and an alternating current sealed submerged arc furnace, and has high power consumption, large electrode consumption and low safety. The solution is as follows: the sealed submerged arc furnace system comprises a sealed submerged arc furnace, a waste heat recovery device and a waste gas treatment and utilization device; the waste heat recovery device comprises a turbonator and a heat pump; the waste gas treatment and utilization device comprises a waste heat boiler connected with a waste gas outlet of the sealed submerged arc furnace, a waste gas dust removing device connected with a gas outlet of the waste heat boiler and a waste gas reaction device connected with a gas outlet of the waste gas dust removing device; a water inlet of the heat pump is connected with a water outlet of a hollow electrode cooling system and a water outlet of the turbonator; a hot water outlet of the heat pump is connected with the inlet of a heat exchanger of the waste heat boiler; a cold water outlet of the heat pump is connected with a water inlet of the hollow electrode cooling system; and the outlet of the heat exchanger of the waste heat boiler is connected with a steam inlet of the turbonator. The sealed submerged arc furnace system has the advantages of high safety, improvement of product quality and yield 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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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00F27D11/10F27D3/00F27D1/00F27D1/18F27B14/06F27B14/08F27B14/14F27B14/16
CPCY02P10/25Y02P80/15
Inventor 谢西平
Owner 北京平希节能环保科技有限公司
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