Device for rapidly treating cold fracture of industrial silicon carbon electrode

Abstract

The utility model discloses a device for quickly treating cold fracture of an industrial silicon carbon electrode, which is characterized in that three electrode clamping grooves are uniformly arranged on the carbon electrode, the electrode clamping grooves are '['-shaped, vertical grooves of the electrode clamping grooves are parallel to the central axis of the carbon electrode, transverse grooves of the electrode clamping grooves are overlapped with the diameter of the carbon electrode, the centers of the vertical grooves are flush with the fracture position of the carbon electrode, and the transverse grooves of the electrode clamping grooves are parallel to the central axis of the carbon electrode. Clamping tools are embedded in the electrode clamping grooves respectively, and vertical rods of the clamping tools are not higher than the outer walls of the carbon electrodes. The utility model solves the problems of difficult handling, long time, high cost, high risk and the like of electrode cold break accidents in the industrial silicon smelting process, reduces the blow-out time of the industrial silicon submerged arc furnace from one day to 4-5 hours, reduces the yield loss by about 100 tons, and simultaneously, by using the device, the broken electrode is connected and fixed and then the normal production is continuously maintained, thereby improving the production efficiency. And the electrode loss cost is reduced by more than 100 thousand yuan. And the treatment mode effectively avoids the risks and hidden dangers that the whole electrode slides down in the electrode reversing process and the copper tile is virtually connected with big fire after treatment and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of accident treatment of carbon electrodes in industrial silicon smelting, and particularly relates to a device for quickly treating cold breakage of industrial silicon carbon electrodes. Background Art

[0002] Industrial silicon, also known as metallurgical-grade silicon, is a purified elemental silicon. Due to different raw material structures, it is mainly produced in two categories: chemical-grade metallurgical silicon and metallurgical-grade silicon. It is mainly used as the main raw material for the production of organosilicon, polysilicon, and monocrystalline silicon, to produce high-purity semiconductor materials, and to prepare alloys (aluminum alloys) for special purposes. The main trace elements to be controlled are Fe, AL, and Ca, and different production grades are defined according to their contents.

[0003] During the smelting process of industrial silicon, due to problems in the hydraulic system, brake synchronization, operation, and the production of carbon electrodes, there are often accidents where the carbon electrode breaks under force from the holding cylinder or the brake. This type of accident is called an electrode cold break accident. To handle this accident, after the submerged arc furnace is powered off, the broken upper and lower parts of the electrode need to be poured out from above using the electrode brake system, and a new electrode needs to be reinstalled before power can be restored to resume production. This treatment method has the following problems: First, the treatment time is too long, generally taking more than one day, and the broken electrodes after being poured out cannot be used again, resulting in waste; second, there are also risks such as the overall sliding of the electrode and damage to the equipment when the high-temperature red electrode in the furnace enters the copper bushing and the holding cylinder when using the brake system to pour the electrode; third, when reinstalling a new electrode after pouring out the broken electrode, due to the long furnace shutdown time, the materials and slag-iron mixture in the furnace solidify, making it difficult to insert the electrode downward. The original part of the electrode in the furnace cannot be completely released from the copper bushing, and the irregular old electrode has a gap with the copper bushing in the copper bushing, resulting in virtual connection and large fire, posing great safety and equipment risks. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for quickly treating cold breakage of industrial silicon carbon electrodes to solve the problem of cold breakage treatment of electrodes during the smelting process of industrial silicon.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A device for quickly treating cold breakage of industrial silicon carbon electrodes includes a carbon electrode. Three electrode card slots are evenly arranged on the carbon electrode. The electrode card slots are in the shape of "[", the vertical slots of the electrode card slots are parallel to the central axis of the carbon electrode, the horizontal slots of the electrode card slots overlap with the diameter of the carbon electrode, the center of the vertical slot is flush with the fracture position of the carbon electrode, and fixtures matching the electrode card slots are respectively embedded in the electrode card slots. The vertical rods of the fixtures do not protrude above the outer wall of the carbon electrode.

[0007] To further implement the present utility model, the vertical groove is 700 mm long, the horizontal groove is 300 mm long, and the depths of both the vertical groove and the horizontal groove are 50 mm.

[0008] To further implement the present utility model, the vertical rod of the fixture is 700 mm long, the cross rod of the fixture is 300 mm long, and the diameters of both the vertical rod and the cross rod are 50 mm.

[0009] To further implement the present utility model, the intervals between the three electrode slots are 120°.

[0010] The beneficial effects of the present utility model compared with the prior art are as follows:

[0011] The present utility model uses steel bars with a diameter of 50 mm to make a fixture with a length of 700 mm and a width of 300 mm. When the industrial silicon carbon electrode undergoes a cold break, when inserting the upper end electrode of the broken part downward, the fracture gap is closed. Use a drill bit with a diameter of 51 mm to open 3 electrode slots at intervals of 120° in the circumferential direction at the fracture position. The slots are 700 mm long, 300 mm deep horizontally, and 50 mm deep longitudinally. The electrode fracture position is located at the center of the slot to ensure that the upper and lower electrode slots are of the same length and improve the fixture effect. After the electrode slots are drilled, the made fixture is clamped in the electrode slots. The fixture should be completely embedded in the slots, and the outer surface should not exceed the surface of the electrode to prevent jamming during the up and down movement of the electrode. After the fixture is placed, power can be supplied to resume production, achieving the purpose of continuing production using the cold-broken electrode and quickly handling the electrode cold-break accident.

[0012] The present utility model provides a fixture with high speed, practicality, economy, and safety performance for the treatment of cold breaks of industrial silicon carbon electrodes, creating conditions for the rapid and efficient handling of cold-break accidents of industrial silicon electrodes.

[0013] The present utility model effectively solves the problems of difficult handling, long time, high cost, and high risk in the treatment of electrode cold-break accidents during the industrial silicon smelting process. Using the device for quickly treating cold breaks of industrial silicon carbon electrodes, the shutdown time of the industrial silicon submerged arc furnace is reduced from one day to 4 - 5 hours, and the output loss is reduced by about 100 tons. At the same time, by using this device, the broken electrode is connected and fixed to continue normal production, reducing the electrode loss cost by more than 100,000 yuan. And this treatment method effectively avoids risks and hidden dangers such as the overall slippage of the electrode during the electrode inversion process and the virtual connection and large fire of the copper bushing after treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model (showing a fixture inserted into one slot);

[0015] Figure 2 is a structural schematic diagram of the fixture in the present utility model;

[0016] The meanings of the reference numerals are as follows: 1. Carbon electrode; 2. Electrode slot; 2-1. Vertical slot; 2-2. Horizontal slot; 3. Fixture; 3-1. Vertical rod; 3-2. Horizontal rod. Detailed implementation mode

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0018] As Figure 1-2 shown, a device for quickly processing cold breaks of industrial silicon carbon electrodes includes a carbon electrode. Three electrode slots 2 are evenly arranged on the carbon electrode 1, and the interval between the three electrode slots 2 is 120°. The electrode slot 2 is in the shape of "[", the vertical slot 2-1 of the electrode slot 2 is parallel to the central axis of the carbon electrode 1, and the horizontal slot 2-2 of the electrode slot 2 overlaps with the diameter of the carbon electrode 1. The vertical slot 2-1 is 700 mm long, the horizontal slot 2-2 is 300 mm long, and the depths of both the vertical slot 2-1 and the horizontal slot 2-2 are 50 mm. The center of the vertical slot 2-1 is flush with the fracture position of the carbon electrode 1. Fixtures 3 matching the electrode slots 2 are respectively embedded in the electrode slots 2. The vertical rod 3-1 of the fixture 3 is 700 mm long, the horizontal rod 3-2 of the fixture 3 is 300 mm long, the diameters of both the vertical rod 3-1 and the horizontal rod 3-2 are 50 mm, and the vertical rod 3-1 of the fixture 3 does not protrude above the outer wall of the carbon electrode 1.

[0019] After the electrode slots 2 are made, the fabricated fixtures 3 are clamped in the electrode slots 2. The fixtures 3 should be completely embedded in the electrode slots 2, and the outer surface should not exceed the surface of the carbon electrode 1 to prevent jamming during the up and down movement of the carbon electrode 1. After the fixtures 3 are placed, power can be supplied to resume production, achieving the purpose of continuing production with cold-broken electrodes and quickly handling electrode cold-break accidents.

Claims

1. A device for quickly processing cold breaks of industrial silicon carbon electrodes, including carbon electrodes, characterized in that: Three electrode card slots (2) are evenly arranged on the carbon electrode (1). The electrode card slot (2) is in the shape of "[", the vertical slot (2-1) of the electrode card slot (2) is parallel to the central axis of the carbon electrode (1), the horizontal slot (2-2) of the electrode card slot (2) overlaps with the diameter of the carbon electrode (1), the center of the vertical slot (2-1) is flush with the fracture position of the carbon electrode (1), and fixtures (3) matching the electrode card slot (2) are respectively embedded in the electrode card slot (2). The vertical rod (3-1) of the fixture (3) does not protrude above the outer wall of the carbon electrode (1).

2. The device for quickly processing cold breaks of industrial silicon carbon electrodes according to claim 1, characterized in that: The vertical slot (2-1) is 700 mm long, the horizontal slot (2-2) is 300 mm long, and the depths of both the vertical slot (2-1) and the horizontal slot (2-2) are 50 mm.

3. The device for quickly processing cold break of industrial silicon carbon electrode according to claim 1 or 2, characterized in that: The vertical rod (3-1) of the fixture (3) is 700 mm long, the cross bar (3-2) of the fixture (3) is 300 mm long, and the diameters of both the vertical rod (3-1) and the cross bar (3-2) are 50 mm.

4. The device for quickly processing cold breaks of industrial silicon carbon electrodes according to claim 3, wherein: The intervals between the three electrode card slots (2) are 120°.

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