Submerged arc furnace ferrosilicon casting system

Abstract

The utility model discloses a submerged arc furnace ferrosilicon casting system, which relates to the technical field of molten iron casting and comprises a submerged arc furnace, an iron tapping track, an iron tapping ladle car, a smoke collecting hood, a ladle overturning machine, an ingot mould car, a ferry car, an ingot mould tipping machine, a casting line, a cooling line, a chute car and an iron pouring tank car. An iron tapping track is arranged below an iron tapping hole of the submerged arc furnace, and the iron tapping ladle car moves along the iron tapping track; the ladle turning machine and the ingot mould trolley walk on the casting line; the tapping ladle trolley walks to a ladle turning machine to cast molten iron; the casting line transversely penetrates through the exhaust fume collecting hood; the ladle overturning machine is located on the chute vehicle, and the ferry vehicle is located on the ladle overturning machine; the ingot mold tipping machine moves on the cooling line, and the cast empty ingot mold is transferred to the cooling line; and the ingot mould vehicle walks to the ingot mould tipping machine, silicon iron in the cooled empty ingot mould is poured into the iron pouring tank vehicle, and the empty ingot mould continues to return to the casting line through the ferry vehicle to wait for next casting. According to the utility model, the casting flue gas is collected, so that the probability of safety accidents is effectively reduced, and the environmental protection effect is also improved.

Description

Technical Field

[0001] This utility model relates to the field of molten iron casting technology, and in particular to a ferrosilicon casting system for an electric arc furnace. Background Technology

[0002] Currently, molten iron casting is carried out using a double-girder bridge crane (hereinafter referred to as "crane"). During the process, the tapping worker controls the tapping ladle to move along the track to the designated position (near the ingot mold). Then, the tapping worker cooperates with the crane operator to hang the "gantry frame" and small ditch lifting tools. After the casting conditions are met, the crane operator operates the crane to carry out the molten iron casting operation. During the casting process, the tapping worker's work procedures are complicated, there are many types of tools and equipment, and there are various uncontrollable safety factors at all times. At the same time, the casting fumes are large and the unorganized fumes cannot be effectively controlled, resulting in a poor workshop environment that fails to meet environmental protection requirements. Utility Model Content

[0003] In order to solve the existing technical problems, this utility model provides a ferrosilicon casting system for electric arc furnaces.

[0004] To achieve the objectives of this utility model, the technical solution adopted is as follows:

[0005] A ferrosilicon casting system for an electric submerged arc furnace includes an electric submerged arc furnace, a tapping track, a tapping ladle car, a fume hood, a ladle turning machine, an ingot mold car, a transfer car, an ingot mold tilting machine, a casting line, a cooling line, a chute car, and an iron unloading car. The tapping track is located below the tapping outlet of the electric submerged arc furnace, and the tapping ladle car moves along the tapping track. A casting line is located on one side of the tapping track, and the ladle turning machine and the ingot mold car travel on the casting line. An empty ingot mold is placed on the ingot mold car. The tapping ladle car travels to the ladle turning machine. Molten iron is poured into empty ingot molds via a casting line that runs across a fume hood. A ladle-turning machine is located on a chute car, and a transfer car is located on the ladle-turning machine. A cooling line is installed parallel to the casting line. An ingot mold tilting machine moves on the cooling line, and the empty ingot molds after casting are transferred to the cooling line via a transfer car. When the ingot mold car reaches the ingot mold tilting machine, the ferrosilicon in the cooled empty ingot mold is poured into the iron trough of the iron-pouring car. The empty ingot molds continue to return to the casting line via a transfer car to await the next casting.

[0006] Based on the above technical solution, the smoke hood is further provided with a ventilation duct, and one end of the ventilation duct is connected to a dust collector.

[0007] Based on the above technical solution, furthermore, the electric arc furnace is provided with at least two units, and an iron tapping track is provided between two adjacent electric arc furnaces.

[0008] Based on the above technical solution, furthermore, multiple iron tapping tracks are provided between two adjacent submerged arc furnaces, and a turntable is provided at the connection point of two adjacent iron tapping tracks between two adjacent submerged arc furnaces. The turntable is located on the operating line, and the transfer line is set parallel to the casting line.

[0009] Based on the above technical solution, a slag removal platform is further provided on one side of the casting line.

[0010] Furthermore, based on the above technical solution, a cooling fan is provided on the cooling line.

[0011] Based on the above technical solution, further, the cooling line is provided with a movable empty ingot mold, and a cooling fan is provided on the side of the empty ingot mold.

[0012] Compared with the prior art, the beneficial effects of this utility model are specifically reflected in:

[0013] The system structure of this utility model adopts an underground fixed ladle turning machine and fixed mold moving casting during the casting process. Compared with the existing fixed mold structure and the method of using a double beam bridge crane to lift the molten iron ladle and move it for casting, the system structure of this utility model centrally collects casting fumes, which can effectively reduce the probability of safety accidents and improve environmental protection. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the ferrosilicon casting system for the electric arc furnace of this utility model;

[0015] Attached reference numerals: 1. Iron tapping track; 2. Iron tapping ladle car; 3. Turntable; 4. Fume hood; 5. Ladle turning machine; 6. Ingot mold car; 7. Transfer car; 8. Ingot mold tilting machine; 9. Ventilation duct; 10. Transfer line; 11. Casting line; 12. Cooling line; 13. Chute car; 14. Slag removal platform; 15. Iron dumping trough car; 16. Submerged arc furnace. Detailed Implementation

[0016] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0017] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0018] In the description of this utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0019] Example

[0020] Combination Figure 1 As shown, this embodiment provides a ferrosilicon casting system for an electric arc furnace, which includes an electric arc furnace 16, a tapping track 1, a tapping ladle car 2, a turntable 3, a fume hood 4, a ladle turning machine 5, an ingot mold car 6, a transfer car 7, an ingot mold tilting machine 8, a ventilation duct 9, a transfer line 10, a casting line 11, a cooling line 12, a chute car 13, a slag removal platform 14, and an iron dumping trough car 15. Specifically, an iron tapping track 1 is provided below the tapping port of the electric arc furnace 16, and the iron tapping ladle car 2 moves along the iron tapping track 1; a casting line 11 is provided on one side of the iron tapping track 1, and a ladle turning machine 5 and an ingot mold car 6 travel on the casting line 11, with an empty ingot mold on the ingot mold car 6; the iron tapping ladle car 2 travels to the ladle turning machine 5 to pour molten iron into the empty ingot mold; and the casting line 11 crosses the fume hood 4; the ladle turning machine 5 is located on the chute car 13, and the transfer car 7 is located on the ladle turning machine 5; a cooling line 12 is provided parallel to the casting line 11, and the ingot mold tilting machine 8 moves on the cooling line 12, and the empty ingot mold after casting is transferred to the cooling line 12 by the transfer car 7; the ingot mold car 6 travels to the ingot mold tilting machine 8, pours the ferrosilicon in the cooled empty ingot mold into the iron trough of the iron pouring car 15, and the empty ingot mold continues to return to the casting line 11 by the transfer car 7 to wait for the next casting.

[0021] In this embodiment, the shuttle car 7 is located above and to the side of the bag-turning machine 5. The smoke hood 4 is equipped with a ventilation duct 9, one end of which is connected to an external dust collector (not shown in the figure). When the bag-turning machine 5 is completely covered by the smoke hood 4, the generated smoke is collected by the dust collector through the ventilation duct 9, improving environmental protection. It should be noted that the iron-discharging track 1 is laid according to the actual situation.

[0022] One end of the tapping track 1 is located below the tapping port of the electric arc furnace 16, and the other end is connected to the turntable 3 on the transfer line 10; the tapping ladle 2 moves on the tapping track 1; a casting line 11 is set parallel to the transfer line 10, and a ladle turning machine 5, a slag removal platform 14, a chute 13, and a fume hood 4 are provided at the location of the casting line 11. The casting line 11 passes through the fume hood 4, and the ladle turning machine 5, the slag removal platform 14, and the chute 13 are all located on the side of the casting line 11, with the ladle turning machine 5 located above the chute 13.

[0023] The cooling line 12 is set parallel to the casting line 11, and the cooling line 12 and the transfer line 10 are located on different sides of the casting line 11. The shuttle car 7 moves on the cooling line 12 and the casting line 11. Specifically, a movable empty ingot mold is provided on the cooling line 12. The outer side of the movable empty ingot mold is provided with a cooling fan (not shown in the figure). The purpose of setting the cooling fan is to provide a cooling effect for the molten iron in the ingot mold after casting, so as to quickly form ferrosilicon.

[0024] The casting process is as follows: Each submerged arc furnace is equipped with an additional set of tapping rails 1. These rails are powered by a 36V power supply to move the tapping ladle car 2. The ladle car 2 travels via a turntable 3 on the transfer line 10 to the ladle turning machine 5 for casting. The ladle turning machine 5 is fixed, and a fixed fume hood 4 is installed above it. The ingot mold is transported across the fume hood 4 on the casting line 11 via a powered ingot mold car 6 (36V AC) on the tapping rails 1, and then sequentially passes through the ladle turning machine 5 for casting. After casting, the ingot mold is transferred to the cooling line 12 via a transfer car 7. The ingot mold contains cast ferrosilicon. The ingot mold car 6 travels sequentially to the ingot mold tilting machine 8, where the cooled ferrosilicon is poured into the iron trough of the ferrosilicon dumping car 15. Empty ingot molds are then returned to the casting line 11 via the transfer car 7 to await the next casting.

[0025] The flue gas collection process is as follows: For the collection of flue gas generated during casting, the dust collectors corresponding to each submerged arc furnace are used to recover the flue gas through the fixed fume hood 4 and the ventilation duct 9 connected to it. In order not to affect the dust removal effect of the dust collector for a long time, an electric valve is installed on the connected ventilation duct 9. When casting is not in progress, the electric valve is closed, and when casting is in progress, the electric valve is opened.

[0026] Taking a ferrosilicon casting project in a factory as an example: two submerged arc furnaces are jointly equipped with a fixed ladle turning machine 5 (with a pit below the ladle turning machine 5), a set of rail-powered ladle cars 2, and two sets of ingot mold cars 6. Each set of ingot mold cars 6 is equipped with 13 ingot molds. The capacity of each ladle is planned to be 7 tons, the thickness of the molten iron casting is 6cm, and the specifications of each ingot mold are 2.5 meters long and 1.8 meters wide, with a corresponding effective volume of 2.3 meters × 1.6 meters; one slag trough and one tractor.

[0027] The corresponding slag removal process is as follows: the ladle car 2 moves to the ladle turning machine 5 to remove slag. Before removing slag, the chute car 13 moves to the middle position of the ladle turning machine 5. After removing slag, the ladle car 2 carries the molten iron ladle back to the turntable 3. After rotating 180°, the ladle car 2 continues to transport the molten iron to the ladle turning machine 5 for casting. Before casting, the chute car 13 moves the casting chute to the middle position of the ladle turning machine 5 for casting.

[0028] The corresponding process for collecting casting fumes is as follows: the ventilation duct 9 of the fume hood 4 is connected to the front end of the main fan of the dust collector corresponding to the two electric arc furnaces. The diameter of the ventilation duct 9 can be selected as 1.4 meters. In order not to affect the dust removal effect of the dust collector for a long time, an electric valve is installed on the connected ventilation duct 9. The electric valve is closed when casting is not in progress and opened when casting is in progress.

[0029] The ladle-turning machine 5 uses a remote control to control the tilting speed and pour molten iron onto the ingot mold. It is equipped with a separate hydraulic station, with one oil pump in use and one on standby. The hydraulic station must have a cooling function to ensure the normal and stable operation of the ladle-turning machine 5.

[0030] The above are merely embodiments of this utility model, described in a relatively specific and detailed manner, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A ferrosilicon casting system for an electric arc furnace, characterized in that, The device comprises an electric arc furnace, a tapping track, a ladle car, a fume hood, a ladle turning machine, a ingot mold car, a shuttle car, an ingot mold tipping machine, a casting line, a cooling line, a chute car and a iron pouring car; The electric arc furnace is provided with a tapping track below the tapping hole, and the ladle car moves along the tapping track; A casting line is arranged on one side of the tapping track, the ladle turning machine and the ingot mold car move on the casting line, and the ingot mold car is provided with an empty ingot mold; the ladle car moves to the ladle turning machine to pour molten iron into the empty ingot mold; and the casting line crosses the fume hood; the ladle turning machine is arranged on the chute car, and the shuttle car is arranged on the ladle turning machine; A cooling line is arranged parallel to the casting line, the ingot mold tipping machine moves on the cooling line, and the empty ingot mold after casting is transferred to the cooling line by the shuttle car; the ingot mold car moves to the ingot mold tipping machine, and the silicon iron in the empty ingot mold after cooling is poured into the iron tank of the iron pouring car, and the empty ingot mold is returned to the casting line by the shuttle car to wait for the next casting.

2. A ferrosilicon casting system for a submerged arc furnace as claimed in claim 1, wherein, The fume hood is provided with a ventilation pipe, and one end of the ventilation pipe is connected to a dust collector.

3. A ferrosilicon casting system for a submerged arc furnace as claimed in claim 1, wherein, The electric arc furnace is provided with at least two, and a tapping track is arranged between the two adjacent electric arc furnaces.

4. A ferrosilicon casting system for a submerged arc furnace as claimed in claim 3, wherein, The tapping track between the two adjacent electric arc furnaces is provided with a plurality of, and a rotary disc is arranged at the connection of the two adjacent tapping tracks between the two adjacent electric arc furnaces, and the rotary disc is arranged on a transfer line, and the transfer line is arranged parallel to the casting line.

5. The ferrosilicon casting system of claim 1, wherein, A slag removal platform is arranged on one side of the casting line.

6. A ferrosilicon casting system for a submerged arc furnace as claimed in claim 1, wherein, A cooling fan is arranged on the cooling line.

7. A ferrosilicon casting system for a submerged arc furnace as claimed in claim 6, wherein, The cooling line is provided with a moving empty ingot mold, and the side surface of the empty ingot mold is provided with a cooling fan.

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