Six phase electrode alternating submerged arc furnace

A submerged arc furnace and six-electrode technology, which is applied in the direction of electric furnace heating, furnace, furnace components, etc., can solve the problems of difficult control of furnace conditions, poor temperature field balance, etc., and achieve low power consumption, easy production, and increased capacity. Effect

Inactive Publication Date: 2013-05-15
成都高威节能科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a six-electrode submerged arc furnace, which can greatly improve the natural power factor of large-scale submerged arc furnaces, and effectively solve the problem of existing three-electrode submerged arc furnaces and six-electrode submerged arc furnaces. The problem of poor temperature field balance, especially solves the problem that the furnace condition is difficult to control when the submerged arc furnace is running at a low load

Method used

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  • Six phase electrode alternating submerged arc furnace
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Embodiment 1

[0015] The layout and connection of electrodes, short nets and transformers are as follows: figure 1 As shown, among them: 1, 2, 3 are the first group of three-phase electrodes (A1, B1, C1), 4, 5, 6 are the second group of three-phase electrodes (A2, B2, C2), 7, 8, 9 are three single-phase transformers (A, B, C); 10 is the furnace wall; the first group of three-phase electrodes (A1, B1, C1) form an equilateral triangle and are arranged clockwise, and the second group of three-phase electrodes (A2 . ) on the extension line; the shape surrounded by the four furnace walls 10 of the furnace body is approximately rhombus, and the shortest distance between the electrodes of each phase and the inner wall of the furnace wall is equal; the primary side of the three single-phase transformers (A, B, C) and 35KV (or 110KV\220KV, etc.) grid connection, the secondary side is connected to the electrodes through large-section water cables, in which: the first group of three-phase electrodes ...

Embodiment 2

[0018] Embodiment two: Such as figure 2 As shown, the difference between embodiment two and embodiment one is as follows:

[0019] The three single-phase transformers (A, B, C) are symmetrically distributed in regular triangles, and the two sets of triangles are upside down, and the line connecting the vertices (B1, C2) of the two sets of triangles vertically bisects the bases of the two sets of triangles (A1- C1, A2-B2).

[0020] Embodiment 2 This layout method makes the distribution of the short network between the six-phase electrodes and the transformer more uniform, the impedance is more balanced, the power balance of the six-phase electrodes in the furnace is better, and the temperature field in the furnace is more evenly distributed.

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Abstract

The invention discloses a six phase electrode alternating submerged arc furnace. Six phase electrodes are evenly arranged in the furnace. When the furnace runs, each phase electrode is same in terms of a voltage gradient, current density, power and a power circle. The power circles of the six phase electrodes are intersected reasonably, the temperature of a reaction zone in the furnace is balanced, and under the condition that diameters of the electrodes are kept same, capacity and output of the submerged arc furnace can be increased more than two times. Heat waste of a furnace body per unit output is obviously reduced, unit electricity consumption per unit product output is obviously reduced, and labor is saved more than 40 percents. The six phase electrode alternating submerged arc furnace is simple in structure, easy to manufacture, convenient to popularize, capable of improving the capacity of the submerged arc furnace, and improving heat efficiency, simplifying the structure, reducing manufacturing cost and prolonging the service life.

Description

technical field [0001] The invention relates to a submerged arc furnace, in particular to a six-electrode AC submerged arc furnace. Background technique [0002] Submerged arc furnaces cover various resistance electric arc furnaces such as calcium carbide furnaces, ferroalloy furnaces, and yellow phosphorus furnaces. The smelted products include calcium carbide, yellow phosphorus, ferrosilicon, ferrochromium, silicon manganese, ferronickel, corundum, ferrotitanium, lead and zinc And other products, the core theory of its smelting is: preheating the charge through the charge current, ionizing the furnace gas to form a directional high-temperature ion flow-arc, converting electrical energy into heat energy, and providing a high enough temperature field for the reduction reaction. [0003] The electrodes installed in existing submerged arc furnaces are mainly three-phase electrodes. With the continuous increase of the power of submerged arc furnaces, three-phase electrode subme...

Claims

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Application Information

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IPC IPC(8): F27B3/20F27D11/10
Inventor 崔存生
Owner 成都高威节能科技有限公司
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