Power saving method for submerged arc furnace

A submerged arc furnace and current technology, applied in furnaces, electric furnace heating, furnace components, etc., can solve the problems of prolonged investment recovery period, poor comprehensive benefits, and harsh working environment, reducing auxiliary consumption, improving product quality, etc. The effect of improving product quality

Active Publication Date: 2014-11-05
四川众泰新纪元科技集团有限公司
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost and the harsh working environment, the service life is greatly affected
The reactive power compensation at the low-voltage side of the short-network also brings about an increase in harmonics, so measure...

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: a kind of submerged arc furnace power-saving method of the present embodiment is carried out according to the following steps:

[0020] a. Cancel capacitance compensation; change the diameter of the electrode, change the current intensity per unit area, reduce the electrode diameter of the conventional calcium carbide furnace by 0.912 times, for example, reduce the electrode diameter of the 25500KV calcium carbide furnace from 1.25m to 1.14m, and reduce the current passing through the electrode Reduced from 86000A to 72000A;

[0021] b. Increase the ratio of voltage to current, maintain the ratio of current to voltage as 1:310, reduce the impedance and inductive reactance of submerged arc furnace, and increase the natural power to 0.9 to improve the utilization rate of current work;

[0022] c. For the short network part, improve the transmission capacity of the short network, that is, increase the operating voltage and reduce the current, increase the len...

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Abstract

The invention relates to a power saving method for a submerged arc furnace. The power saving method comprises the steps of a, eliminating capacitance compensation, changing the diameter of an electrode and changing the current intensity in a unit area, wherein the diameter of the electrode of a traditional 25500 kV calcium carbide furnace is decreased to 1.14 m from 1.25 m, and the current passing through the electrode is decreased to 72000 A from 86000 A; b, increasing the ratio of the voltage to the current, keeping the ratio of the current to the voltage being 1: 310, reducing generation of the impedance and the inductive reactance of the submerged arc furnace, and increasing the natural power to 0.9 so as to increase the utilization ratio of work of the current; c, improving the transmission capacity of a short net in a short net part, wherein the operating voltage is increased, the current is decreased, the arcing length and the arcing intensity of an electrode arc are increased, and the efficiency of converting electric power into heat energy is improved. By means of the method, temperature can be effectively centralized, the energy consumption of production can be lowered, the power factor can be increased, and the yield and quality of products can be improved.

Description

technical field [0001] The invention relates to a power-saving method for a submerged arc furnace. Background technique [0002] Submerged arc furnace is also called electric arc furnace or resistance electric furnace. It is mainly used for reducing smelting ores, carbonaceous reducing agents and solvents and other raw materials. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc. It is the production equipment for important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide. Its working feature is to use carbon or magnesia refractory materials as the furnace lining and use self-cultivating electrodes. The electrode is inserted into the furnace material for submerged arc operation, using the energy and current of the arc to pass through the furnace material, and the energy generated by the resistance of the furnace material to smelt metal, feedi...

Claims

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Application Information

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IPC IPC(8): H05B7/06F27D11/10C22B4/08
CPCY02P10/25
Inventor 孙孟君
Owner 四川众泰新纪元科技集团有限公司
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