Slagging material feeding structure of electric furnace for low-carbon ferrosilicon production

Abstract

The utility model relates to the technical field of electric furnaces, in particular to a slagging material feeding structure of an electric furnace for low-carbon ferrosilicon production, which is characterized in that one side of a furnace chamber is communicated with a slagging material feeding box mounted on the outer wall of a furnace body, the upper end of the slagging material feeding box is provided with a feeding hole, and a filter screen is arranged in an inner cavity of the slagging material feeding box; sliding blocks are fixedly connected to the two sides of the filter screen, sliding grooves are formed in the inner walls of the two sides of the feeding box, vibration springs are fixedly connected to bottom plates in cavities of the sliding grooves, and when slag making materials fall on the filter screen, through continuous vibration of the filter screen, the filtering efficiency of the filter screen is greatly improved, and it is guaranteed that the granularity of particles entering a furnace cavity is uniform; according to the invention, the slag-making material is fully contacted with the oxide, so that the problem of low efficiency of reducing the content of impurity elements of the alloy caused by incomplete reaction due to difficult particle size of the slag-making material, especially too large slag-making material particles, which is difficult to fully contact with the oxide is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnaces, in particular to a slag material feeding structure of an electric furnace used for low-carbon ferrosilicon production. Background Art

[0002] In order to reduce the content of impurities (aluminum) in the alloy when the electric furnace produces low-carbon ferrosilicon, fluorite and high-aluminum quartz sand are directly put into the furnace. When the ferrosilicon flows into the ladle, the mixed gas of compressed air and oxygen is blown into the melt, and a certain amount of fluorite particles and high-aluminum quartz sand mixture is added to the melt. This slag-making material is both an oxidant and an adsorbent, which can absorb the floating oxides (Al2O3, CaO) and SiC slag produced by the oxygen blowing refining reaction, thereby reducing the content of impurity elements in the alloy.

[0003] However, due to the difficulty in adjusting the particle size of the slag-forming material, especially the overly large slag-forming material particles, it is difficult for them to fully contact with the oxides, resulting in an incomplete reaction, thus leading to low efficiency in reducing the impurity element content of the alloy.

[0004] In view of the above problems, the utility model proposes a slag material feeding structure for an electric furnace used for low-carbon ferrosilicon production. Utility Model Content

[0005] The utility model aims to provide a slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon. One side of the furnace cavity is connected with a slag material feeding box installed on the outer wall of the furnace body. A feeding port is provided at the upper end of the slag material feeding box. A filter screen is provided in the inner cavity of the slag material feeding box. Sliding blocks are fixedly connected on both sides of the filter screen. Sliding grooves are provided on the inner walls on both sides of the feeding box. A vibration spring is fixedly connected to the inner bottom plate of the sliding groove, thereby solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slag material feeding structure for an electric furnace for low-carbon ferrosilicon production, comprising a furnace body and a control panel installed on the upper end of the furnace body, a furnace cavity is provided inside the furnace body, one side of the furnace cavity is connected to a slag material feed box installed on the outer wall of the furnace body, a feed port is provided on the upper end of the slag material feed box, a filter is provided in the inner cavity of the slag material feed box, sliding blocks are fixedly connected to both sides of the filter, sliding grooves are provided on the inner walls on both sides of the feed box, and a vibration spring is fixedly connected to the inner bottom plate of the sliding groove.

[0007] Preferably, the upper end of the vibration spring is fixedly connected to the sliding block, and the sliding block is slidably connected to the inner wall of the sliding groove.

[0008] Preferably, when the vibration spring is in a relaxed state, the sliding block fits against the inner top plate of the sliding groove.

[0009] Preferably, a through opening is provided on the outer wall of the lower end receiving plate of the slag material feeding box, and the through opening is connected to the slag material feeding box.

[0010] Preferably, a material guiding mechanism is provided on the inner wall of the through opening.

[0011] Preferably, the material guiding mechanism includes a side connecting plate fixedly mounted on the inner wall of the lower end receiving plate of the slag material feed box, both sides of the side connecting plate are fixedly connected with a first connecting rod, two groups of the first connecting rods are axially connected with a second connecting rod at one end away from the side connecting plate, and a material guiding plate is axially connected between the two groups of the second connecting rods.

[0012] Preferably, one end of the material guide plate is fixedly connected to an elastic element, and one end of the elastic element away from the material guide plate is fixedly connected to the upper wall of the side connecting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model proposes a slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon. When the slag material falls on the filter screen, the falling gravity drives the filter screen to move downward through a sliding block, thereby squeezing a vibration spring. The filter screen is continuously vibrated through the cooperation of the reaction force of the vibration spring, thereby greatly improving the filtering efficiency of the filter screen, ensuring that the particle size of particles entering the furnace chamber is uniform, so that they can fully contact with oxides, and solving the problem that the particle size of the slag material is not easy to be adjusted, especially the overly large slag material particles, which are difficult to fully contact with oxides, resulting in insufficient reaction, thereby leading to low efficiency in reducing the impurity element content of the alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the slag material feeding box of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal planar structure of the slag material feeding box of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the material guiding mechanism of the utility model.

[0019] In the figure: 1. furnace body; 2. control panel; 3. furnace chamber; 4. slag material feed box; 5. feed port; 6. filter screen; 7. sliding block; 8. sliding groove; 9. vibration spring; 10. through port; 11. material guiding mechanism; 111. side connecting plate; 112. first connecting rod; 113. second connecting rod; 114. material guiding plate; 115. elastic element. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 In order to solve the problem that the particle size of the slag material is not easy, especially the overly large slag material particles are difficult to fully contact with the oxide, resulting in an incomplete reaction, and thus resulting in low efficiency in reducing the impurity element content of the alloy, the following preferred technical solutions are provided:

[0022] A slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon comprises a furnace body 1 and a control panel 2 installed at the upper end of the furnace body 1, a furnace cavity 3 is provided inside the furnace body 1, one side of the furnace cavity 3 is connected with a slag material feeding box 4 installed on the outer wall of the furnace body 1, a feeding port 5 is provided at the upper end of the slag material feeding box 4, a filter screen 6 is provided in the inner cavity of the slag material feeding box 4, sliding blocks 7 are fixedly connected on both sides of the filter screen 6, sliding grooves 8 are provided on the inner walls of both sides of the feeding box 4, a vibration spring 9 is fixedly connected to the inner bottom plate of the sliding groove 8, the upper end of the vibration spring 9 is fixedly connected to the sliding block 7, the sliding block 7 is slidably connected to the inner wall of the sliding groove 8, when the vibration spring 9 is in a relaxed state, the sliding block 7 fits the inner top plate of the sliding groove 8, a through opening 10 is provided on the outer wall of the lower end receiving plate of the slag material feeding box 4, and the through opening 10 is connected to the slag material feeding box 4.

[0023] Specifically, the feed port 5 is connected to an external pipeline, through which the slag material is poured into the slag material feed box 4. At this time, the slag material will fall on the filter screen 6 for filtration, and the slag material with too large particle size will be left above the filter screen 6. When the slag material falls on the filter screen 6, the falling gravity will drive the filter screen 6 to move downward through the sliding block 7, thereby squeezing the vibration spring 9. Through the cooperation of the reaction force of the vibration spring 9, the filter screen 6 is continuously vibrated, thereby greatly improving the filtration efficiency of the filter screen 6, ensuring that the particle size of the slag material entering the furnace chamber 3 is uniform, so that it can fully contact with the oxide, and solves the problem that the particle size of the slag material is not easy to size, especially the slag material particles that are too large, are difficult to fully contact with the oxide, resulting in an incomplete reaction, thereby leading to inefficient reduction of the impurity element content of the alloy.

[0024] A material guiding mechanism 11 is provided on the inner wall of the through opening 10, and the material guiding mechanism 11 includes a side connecting plate 111 fixedly installed on the inner wall of the lower end receiving plate of the slag material feeding box 4, and first connecting rods 112 are fixedly connected to both sides of the side connecting plate 111, and the ends of the two groups of first connecting rods 112 away from the side connecting plate 111 are axially connected to the second connecting rods 113, and a material guiding plate 114 is axially connected between the two groups of second connecting rods 113, and one end of the material guiding plate 114 is fixedly connected to an elastic element 115, and the end of the elastic element 115 away from the material guiding plate 114 is fixedly connected to the upper wall of the side connecting plate 111.

[0025] Specifically, after the slag material is filtered through the filter screen 6, it will fall on the guide plate 114 for accumulation. When the accumulated weight is greater than the elastic potential energy of the elastic element 115, the guide plate 114 will squeeze the elastic element 115, and through the cooperation of the first connecting rod 112 and the second connecting rod 113, one side of the guide plate 114 will tilt downward. At this time, the slag material on the guide plate 114 will enter the furnace chamber 3 from the opening 10, and then the guide plate 114 will return to its original position on the elastic element 115, and continue in this way to achieve the purpose of quantitative material discharge, further ensuring sufficient contact with the oxide.

[0026] To sum up: when the slag material falls on the filter screen 6, the falling gravity will drive the filter screen 6 to move downward through the sliding block 7, thereby squeezing the vibration spring 9. Through the cooperation of the reaction force of the vibration spring 9, the filter screen 6 is continuously vibrated, thereby greatly improving the filtration efficiency of the filter screen 6, ensuring that the particle size entering the furnace chamber 3 is uniform, so that it can fully contact with the oxide. After the slag material is filtered through the filter screen 6, it will fall on the guide plate 114 for accumulation. When the accumulated weight is greater than the elastic potential energy of the elastic element 115, the guide plate 114 will squeeze the elastic element 115, and through the cooperation of the first connecting rod 112 and the second connecting rod 113, one side of the guide plate 114 will tilt downward. At this time, the slag material on the guide plate 114 will enter the furnace chamber 3 from the through port 10, and then the guide plate 114 will return to its original position on the elastic element 115, and continue in this way to achieve the purpose of quantitative feeding.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon, comprising a furnace body (1) and a control panel (2) mounted on the upper end of the furnace body (1), wherein a furnace cavity (3) is provided inside the furnace body (1), characterized in that: One side of the furnace chamber (3) is connected to a slag material feed box (4) installed on the outer wall of the furnace body (1); a feed port (5) is provided at the upper end of the slag material feed box (4); a filter screen (6) is provided in the inner cavity of the slag material feed box (4); sliding blocks (7) are fixedly connected to both sides of the filter screen (6); sliding grooves (8) are provided on the inner walls on both sides of the feed box (4); and a vibration spring (9) is fixedly connected to the inner bottom plate of the sliding groove (8).

2. The slag material feeding structure of the electric furnace for producing low carbon ferrosilicon according to claim 1, characterized in that: The upper end of the vibration spring (9) is fixedly connected to the sliding block (7), and the sliding block (7) is slidably connected to the inner wall of the sliding groove (8).

3. The slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon according to claim 1, characterized in that: When the vibration spring (9) is in a relaxed state, the sliding block (7) fits against the inner top plate of the sliding groove (8).

4. The slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon according to claim 1, characterized in that: A through opening (10) is provided on the outer wall of the lower end receiving plate of the slag material feed box (4), and the through opening (10) is connected to the slag material feed box (4).

5. The slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon according to claim 4, characterized in that: The inner wall of the through opening (10) is provided with a material guiding mechanism (11).

6. The slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon according to claim 5, characterized in that: The material guiding mechanism (11) comprises a side connecting plate (111) fixedly mounted on the inner wall of the lower end receiving plate of the slag material feeding box (4), both sides of the side connecting plate (111) are fixedly connected with a first connecting rod (112), two groups of the first connecting rods (112) are axially connected with a second connecting rod (113) at one end away from the side connecting plate (111), and a material guiding plate (114) is axially connected between the two groups of the second connecting rods (113).

7. The slag material feeding structure for an electric furnace for producing low-carbon ferrosilicon according to claim 6, characterized in that: One end of the material guide plate (114) is fixedly connected to an elastic element (115), and one end of the elastic element (115) away from the material guide plate (114) is fixedly connected to the upper wall of the side connecting plate (111).

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