Impurity removal device for metal silicon smelting

Abstract

The utility model relates to an impurity removal device for metal silicon smelting, which comprises an impurity removal box, a motor and a frame column, and is characterized in that by arranging a striking device, in the reaction process of metal silicon and flux, impurities are separated from silicon only when adhesive force is reduced, the separation speed of the metal silicon and the flux is low, and when the impurities are discharged through a first filter plate and a second filter plate, the impurities are separated from the flux only when the adhesive force is reduced. At the moment, a motor is driven to rotate a rotating shaft to drive a convex block to steer, the convex block can generate pushing acting force on the inner side of an annular plate frame in the steering process, the annular plate frame is made to move along with different stress positions, a striking block is driven to strike the outer side of a carrier, the carrier vibrates due to impact force, and impurities can be vibrated off easily; therefore, the impurity removal rate is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon smelting, in particular to an impurity removal device for metal silicon smelting. Background Art

[0002] Metal silicon smelting is a necessary process for producing refined industrial silicon. The process of smelting metal silicon is a slag-free process. Chemical silicon smelting has stricter requirements on the selection of silica, so the impurity content in silicon should be less. The flux refining method is one of the methods for removing impurities from metal silicon. It is beneficial for the reaction between flux and metal silicon, which reduces the adhesion of slag to silicon and realizes the separation of slag and silicon.

[0003] When optimizing the existing impurity removal devices for metal silicon smelting, most of them are reflected in improving the efficiency of impurity removal in the silicon smelting process. For example, the Chinese utility model patent with application number CN202321761218.X discloses "A kind of impurity removal device for metal silicon smelting". In this device, it includes a bracket and a solvent barrel. A feed trough and a discharge trough are fixed on the inner side of the bracket. A motor is fixed on the top surface of the bracket. The output end of the motor passes through the interior of the bracket and is coaxially fixed with a rotating rod. A connecting cylinder is fixed to the lower outer side of the rotating rod. A plurality of slide grooves are provided on the outer side of the connecting cylinder. A slider is slidably connected to the inner side of the slide groove. A first containing cylinder is fixed to one end of the slider. The inner side of the first containing cylinder is rotatably connected to the second containing cylinder. An inclined surface is provided on the inner bottom of the second containing cylinder. A mounting plate is fixed to the upper outer side of the rotating rod. A plurality of hydraulic rods are fixed to the bottom surface of the mounting plate. Metal silicon can be quickly replaced, waiting time can be reduced, and production efficiency can be improved.

[0004] Although the above-mentioned impurity removal device for metal silicon smelting has certain advantages in improving the efficiency of impurity removal in the silicon smelting process, it still has certain disadvantages: when metal silicon and flux are in the reaction process, the impurities in the silicon are separated from the silicon because the adhesion of the impurities in the silicon decreases, and the separation speed of the two is slow. In addition, when the impurities fall through the first filter plate and the second filter plate, they are easily stuck in the sieve holes, and the impurities fall slowly, resulting in a poor impurity removal effect. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In order to solve the above technical problems, the utility model provides an impurity removal device for metal silicon smelting.

[0007] (II) Technical solution

[0008] Based on this, the utility model provides the following technical solutions: a de-impurity device for metallic silicon smelting, comprising a de-impurity box, a motor and a frame column, wherein the motor is installed at the top middle position of the de-impurity box, and the upper end of the frame column is welded to the left and right end faces of the outer side of the de-impurity box; the de-impurity box comprises an outer box, a feed inlet, a de-impurity device and an outlet, wherein the feed inlet and the outer box are integrated into a structure and are through-set at the upper end face thereof, the de-impurity device is set inside the outer box, and the outlet and the outer box are integrated into a structure and are through-set at the bottom of the outer box.

[0009] Preferably, the impurity removal device includes a carrier, a first filter plate, a second filter plate, a striking device, a movable cavity and a bottom plate, the first filter plate is installed on the inner side of the carrier, the second filter plate is located below the first filter plate, the striking device is movable on the side of the carrier, the movable cavity is arranged adjacent to the carrier, and the bottom of the striking device is movably matched with the bottom plate.

[0010] Preferably, the impact device includes a rotating shaft, a protrusion, a bearing seat and a movable body, the movable body is clearance-matched with the outer end of the protrusion, one side end of the protrusion is fixedly connected to the outer periphery of the rotating shaft, and the bottom of the rotating shaft is embedded in the bearing seat and movably fits.

[0011] Preferably, the moving body comprises an annular plate frame, a striking block and a bottom wheel, the rear end of the striking block is fixedly connected to the outer end of the annular plate frame, and the bottom wheel is installed at the bottom of the annular plate frame.

[0012] Preferably, the left and right end surfaces on the outer side of the outer box are fixedly connected to the upper ends of the frame columns, and the feed inlets are provided at two locations.

[0013] Preferably, the top end of the impact device is connected to the output end of the motor, the carrier is through and located below the feed inlet, and the movable cavity is the space between the two carriers, providing a movable space for the impact device to move.

[0014] Preferably, the protrusion is embedded in the middle end of the base plate, the moving body moves on the outside of the carrier, the protrusion is provided at two locations, and is connected outside the rotating shaft in the same direction, and changes position as the rotating shaft rotates, and can generate driving force on different positions of the moving body during the turning process.

[0015] Preferably, the bottom wheel is slidably engaged with the bottom plate, the striking block is movably engaged with the outer side of the carrier, the inner side of the ring plate frame is movably engaged with the protrusion, and the ring plate frame is annular in shape and can be displaced after receiving the top thrust of the protrusion, so as to drive the striking block to generate an impact force on the outer side of the carrier.

[0016] Preferably, the impurity-removing flux used can be made of soda ash, dolomite, silica, quicklime and serpentine or crushed glass.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides an impurity removal device for metal silicon smelting, which has the following beneficial effects:

[0019] 1. A metal silicon smelting impurity removal device is used to put the metal silicon to be removed from the feed port into the carrier. The silicon containing impurities cannot pass through the sieve holes of the first filter plate due to its large density and volume. The flux is added into the carrier from the feed port to react with the metal silicon. The added flux has the effect of reducing the melting point, density and viscosity of the slag in the crude silicon. After the density of impurities in the silicon is reduced, its adhesion to the silicon is also reduced, which is beneficial to the separation of the slag and the silicon. After the impurities are separated from the silicon, they can be discharged downward through the sieve holes of the first filter plate and the second filter plate due to their small density and volume, and are removed by falling.

[0020] 2. The impurity removal device for metal silicon smelting has an impact device set up. When metal silicon and flux are in the reaction process, the separation of impurities from silicon is slow because the adhesion between the impurities and silicon decreases, and the impurities are easily stuck in the sieve holes when they are discharged through the first filter plate and the second filter plate. At this time, the driving motor is used to rotate the shaft to drive the protrusion to turn. The protrusion can generate a pushing force on the inner side of the ring plate frame during the turning process, so that the ring plate frame moves with the different force positions, driving the impact block to hit the outer side of the carrier. The carrier is vibrated by the impact force, which is conducive to shaking off the impurities, thereby accelerating the impurity removal rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the impurity removal box of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the impurity removal device of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the impact device of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the mobile body of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the ring plate frame of the utility model.

[0027] In the figure: impurity removal box-1, motor-2, frame column-3, outer box-11, feed inlet-12, impurity removal device-13, outlet-14, carrier-131, first filter plate-132, second filter plate-133, impact device-134, movable chamber-135, bottom plate-136, rotating shaft-341, protrusion-342, bearing seat-343, moving body-344, ring plate frame-441, impact block-442, bottom wheel-443. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-2 A de-impurity device for metal silicon smelting comprises a de-impurity box 1, a motor 2 and a frame column 3, wherein the motor 2 is installed at the middle position of the top of the de-impurity box 1, and the upper ends of the frame columns 3 are welded to the left and right end surfaces of the outer side of the de-impurity box 1; the de-impurity box 1 comprises an outer box 11, a material inlet 12, a de-impurity device 13 and an outlet 14, wherein the material inlet 12 is an integrated structure with the outer box 11 and is through-arranged at the position of the upper end surface thereof, the de-impurity device 13 is arranged inside the outer box 11, the outlet 14 is an integrated structure with the outer box 11 and is through-arranged at the bottom of the outer box 11, the left and right end surfaces of the outer side of the outer box 11 are fixedly connected to the upper ends of the frame columns 3, and the material inlet 12 is provided at two locations.

[0030] See also Figure 3-4A de-impurity device for metal silicon smelting, the de-impurity device 13 comprises a carrier 131, a first filter plate 132, a second filter plate 133, a striking device 134, a movable cavity 135 and a bottom plate 136, the first filter plate 132 is installed on the inner side of the carrier 131, the second filter plate 133 is located below the first filter plate 132, the striking device 134 is movable beside the carrier 131, the movable cavity 135 is arranged adjacent to the carrier 131, the bottom of the striking device 134 is movably matched with the bottom plate 136, the striking device 134 comprises a rotating shaft 341, a protrusion 342, a bearing seat 343 and a moving body 344, the moving body 344 is clearance-matched with the outer end of the protrusion 342, the protrusion 34 2 is fixedly connected to the outer periphery of the rotating shaft 341, the bottom of the rotating shaft 341 is pressed into the bearing seat 343 and movably matched, the top of the impact device 134 is connected to the output end of the motor 2, the carrier 131 is through and located below the feed port 12, the movable cavity 135 is the space between the two carriers 131, and provides a movable space for the movement of the impact device 134, the protrusion 342 is embedded and installed at the middle end of the bottom plate 136, the moving body 344 moves on the outside of the carrier 131, the protrusion 342 is provided at two places, and is connected to the outside of the rotating shaft 341 in the same direction, and changes position with the rotation of the rotating shaft 341, and can generate a driving force on different positions of the moving body 344 during the steering process.

[0031] See also Figure 5-6 , a de-impurity device for metal silicon smelting, the moving body 344 includes a ring plate frame 441, a striking block 442 and a bottom wheel 443, the rear end of the striking block 442 is fixedly connected to the outer end of the ring plate frame 441, the bottom wheel 443 is installed at the bottom of the ring plate frame 441, the bottom wheel 443 is slidably matched with the bottom plate 136, the striking block 442 is movably matched on the outer side of the carrier 131, the inner side of the ring plate frame 441 is movably matched with the protrusion 342, the ring plate frame 441 is annular, and it can be displaced after receiving the top thrust of the protrusion 342, so as to drive the striking block 442 to generate an impact force on the outer side of the carrier 131, and the de-impurity flux used can be composed of soda ash, dolomite, silica, quicklime and serpentine or broken glass.

[0032] In summary, the metal silicon to be removed is placed into the carrier 131 from the feed port 12. The silicon containing impurities cannot pass through the sieve holes of the first filter plate 132 due to its large density and volume. The flux is added into the carrier 131 from the feed port 12 to react with the metal silicon. The added flux reduces the melting point, density and viscosity of the slag in the crude silicon. After the density of the impurities in the silicon is reduced, its adhesion to the silicon is also reduced, which is beneficial to the separation of the slag and the silicon. After the impurities are separated from the silicon, they can be discharged downward through the sieve holes of the first filter plate 132 and the second filter plate 133 due to their small density and volume, and are removed by falling through 144. The impact device 1 is provided. 34. When the metal silicon and the flux are in the reaction process, the separation of impurities from silicon is slow because the adhesion between them decreases. In addition, impurities are easily stuck in the sieve holes when they are discharged through the first filter plate 132 and the second filter plate 133. At this time, the motor 2 is driven to rotate the shaft 341, driving the protrusion 342 to turn. During the turning process, the protrusion 342 can generate a pushing force on the inner side of the ring plate frame 441, causing the ring plate frame 441 to move with the different force positions, driving the impact block 442 to hit the outer side of the carrier 131. The carrier 131 is vibrated by the impact force, which is conducive to shaking off the impurities, thereby accelerating the impurity removal rate.

[0033] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0034] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0035] Although 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. An impurity removal device for metal silicon smelting, characterized in that: It comprises a debris removal box (1), a motor (2) and a support column (3), wherein the motor (2) is installed at the middle position of the top of the debris removal box (1), and the upper end of the support column (3) is welded to the left and right end surfaces of the outer side of the debris removal box (1); The impurity removal box (1) comprises an outer box (11), an inlet (12), an impurity removal device (13) and an outlet (14); the inlet (12) and the outer box (11) are an integrated structure and are arranged through-through at the upper end surface thereof; the impurity removal device (13) is arranged inside the outer box (11); and the outlet (14) and the outer box (11) are an integrated structure and are arranged through-through at the bottom of the outer box (11).

2. The impurity removal device for metal silicon smelting according to claim 1, characterized in that: The impurity removal device (13) comprises a carrier (131), a first filter plate (132), a second filter plate (133), an impact device (134), a movable cavity (135) and a bottom plate (136); the first filter plate (132) is installed on the inner side of the carrier (131); the second filter plate (133) is located below the first filter plate (132); the impact device (134) is movable beside the carrier (131); the movable cavity (135) is arranged adjacent to the carrier (131); and the bottom of the impact device (134) is movably matched with the bottom plate (136).

3. The impurity removal device for metal silicon smelting according to claim 2, characterized in that: The impact device (134) comprises a rotating shaft (341), a protrusion (342), a bearing seat (343) and a moving body (344); the moving body (344) is clearance-matched with the outer end of the protrusion (342); one side end of the protrusion (342) is fixedly connected to the outer periphery of the rotating shaft (341); and the bottom of the rotating shaft (341) is pressed into the bearing seat (343) and movably matched.

4. The impurity removal device for metal silicon smelting according to claim 3 is characterized in that: The moving body (344) comprises a ring plate frame (441), a striking block (442) and a bottom wheel (443); the rear end of the striking block (442) is fixedly connected to the outer end of the ring plate frame (441); and the bottom wheel (443) is installed at the bottom of the ring plate frame (441).

5. The impurity removal device for metal silicon smelting according to claim 1, characterized in that: The left and right end surfaces on the outside of the outer box (11) are fixedly connected to the upper ends of the frame columns (3).

6. The impurity removal device for metal silicon smelting according to claim 2, characterized in that: The top end of the impact device (134) is connected to the output end of the motor (2), and the carrier (131) passes through and is located below the feed port (12).

7. The impurity removal device for metal silicon smelting according to claim 3 is characterized in that: The protrusion (342) is embedded and installed in the middle end of the bottom plate (136), and the moving body (344) moves on the outside of the carrier (131).

8. The impurity removal device for metal silicon smelting according to claim 4, characterized in that: The bottom wheel (443) is slidably matched with the bottom plate (136), the striking block (442) is movably matched with the outer side of the carrier (131), and the inner side of the ring plate frame (441) is movably matched with the protrusion (342).

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