A zinc sheet pushing device and method for zinc casting

Abstract

The application relates to a zinc sheet pushing device and method for zinc casting, and belongs to the technical field of zinc sheet casting. The device comprises a chassis, a zinc sheet pushing mechanism, a spreading mechanism and a zinc sheet lifting mechanism. The left side of the chassis is provided with the zinc sheet pushing mechanism, the zinc sheet pushing mechanism is provided with the spreading mechanism for spreading ammonium chloride powder, and the rear side of the chassis is provided with the zinc sheet lifting mechanism. The zinc sheet lifting mechanism arranged at the rear side of the chassis lifts the zinc sheet, the spreading mechanism spreads ammonium chloride powder between the multiple layers of zinc sheets to be pushed, and the zinc sheet pushing mechanism pushes the zinc sheet into a power frequency induction furnace for subsequent casting operation. The ammonium chloride and the zinc sheet can enter the power frequency induction furnace at the same time, the zinc sheet can be uniformly contacted with the ammonium chloride in the melting process, the ammonium chloride is prevented from being decomposed in advance, the reaction degree of the ammonium chloride and zinc oxide can be effectively improved, the scum output rate in the zinc sheet melting process can be effectively reduced, and the direct recovery rate of the zinc sheet casting can be improved.

Description

Technical Field

[0001] The invention relates to a zinc sheet pushing device and method for zinc smelting and casting, belonging to the technical field of zinc sheet smelting and casting. Background Art

[0002] During the hydrometallurgical zinc smelting process, zinc sulfate solution is electrolyzed onto cathode plates to form cathode zinc flakes. The zinc flakes are then stripped from the cathode plates and placed in an induction furnace to melt into liquid form. They are then cast into zinc ingots using an ingot casting machine. However, during production, the zinc flakes are typically left for 24 hours before being placed in the induction furnace. This causes the surface of the zinc flakes to oxidize and form zinc oxide during this time. Furthermore, during the zinc flake casting process, both molten and unmelted zinc are also susceptible to oxidation, forming zinc oxide. The specific reactions are as follows:

[0003] Zn+H2O=ZnO+H2↑, 2Zn+O2=2ZnO

[0004] During the zinc flake melting process, zinc oxide will wrap some zinc particles from the liquid interior to the liquid surface to form slag. In order to reduce the slag output rate, in production practice, ammonium chloride is usually added to the power frequency induction furnace as a slag-forming agent. The hydrogen chloride produced by the decomposition of ammonium chloride at high temperature reacts with zinc oxide to form low-melting zinc chloride, causing the zinc particles wrapped by zinc oxide to aggregate and sink into the zinc melt. The slag output rate can be reduced to 3.6-4.7%, and the direct yield of zinc flake melting and casting can reach 97.5%. The specific reaction is as follows:

[0005] 2NH4Cl+ZnO=ZnCl2+2NH3↑+H2O

[0006] The step-by-step reaction is:

[0007] NH4Cl=NH3↑+HCl, ZnO+2HCl=ZnCl2+H2O

[0008] In current production practice, ammonium chloride is added mainly in two ways: directly adding it into the industrial frequency induction furnace, or manually spreading ammonium chloride on the surface of the top zinc sheet before the cathode zinc sheet is pushed into the industrial frequency induction furnace by the zinc sheet pushing equipment. However, both methods of adding ammonium chloride result in uneven contact or even relatively large separation between the ammonium chloride and the zinc sheet, which easily leads to premature decomposition of ammonium chloride, resulting in insufficient reaction between ammonium chloride and zinc oxide, and further causing the slag output rate to remain high during the zinc sheet melting process.

[0009] Therefore, in order to improve the reaction degree of ammonium chloride and zinc oxide, further improve the direct yield of zinc sheet smelting and casting, and improve economic benefits, it is necessary to provide a zinc sheet pushing device and method for zinc smelting and casting. Summary of the Invention

[0010] In order to overcome the problems existing in the background technology, the present invention proposes a zinc sheet pushing device and method for zinc smelting and casting, in which the zinc sheet is lifted by a zinc sheet lifting mechanism arranged on the rear side of the base frame, ammonium chloride powder is spread between the multiple layers of zinc sheets to be pushed by a spreading mechanism, and the zinc sheet is pushed into the industrial frequency induction furnace for subsequent smelting and casting operations by a zinc sheet pushing mechanism arranged on the left side of the base frame. The ammonium chloride and the zinc sheet can enter the industrial frequency induction furnace at the same time, ensuring that the zinc sheet is in uniform contact with the ammonium chloride during the melting process, avoiding premature decomposition of ammonium chloride, and effectively improving the degree of reaction between ammonium chloride and zinc oxide, thereby effectively reducing the slag output rate during the zinc sheet melting process and improving the direct yield of zinc sheet smelting and casting.

[0011] To solve the above problems, the present invention is implemented through the following technical solutions:

[0012] A zinc sheet pushing device for zinc smelting and casting includes a base frame, a zinc sheet pushing mechanism, a spreading mechanism, and a zinc sheet lifting mechanism. The base frame is arranged above the feed port of an industrial frequency induction furnace and is used to place zinc sheets. The zinc sheet pushing mechanism is arranged on the left side of the base frame. The spreading mechanism for spreading ammonium chloride powder is arranged on the zinc sheet pushing mechanism. The zinc sheet lifting mechanism for lifting the zinc sheets is arranged on the rear side of the base frame.

[0013] The zinc sheet pushing mechanism includes a chain hoist I, a support frame I, a roller I, a pushing cylinder, a push plate frame, a scraper, a push plate, and a column. The chain hoist I is vertically installed on the left side of the base frame. A wheel groove is provided on the frame of the chain hoist I. The support frame I can be lifted and lowered on the chain hoist I through the roller I. The support frame I is fixedly connected to the lifting chain of the chain hoist I. A pushing cylinder is horizontally installed on the support frame I. A pushing plate frame is installed on the output end of the pushing cylinder. The scraper is fixedly installed on the pushing plate frame, and the push plates are installed on both sides of the scraper through the columns.

[0014] The spreading mechanism includes a support plate, a screw module, a spiral conveying mechanism, a feed pipe, and a powder conveying pump. The support plate is fixedly installed on the support frame I, and the screw module is horizontally installed on the support plate. A spiral conveying mechanism perpendicular to the screw module is horizontally installed on the slider of the screw module. The feed end of the spiral conveying mechanism is connected to the powder conveying pump for pumping ammonium chloride powder through the feed pipe, and a discharge port is provided on the bottom shell of the spiral conveying mechanism at a position above the zinc sheet.

[0015] Preferably, the scraper includes a blade seat and a blade body, the blade seat is fixedly mounted on the push plate frame, and the blade body is mounted on the blade seat at an angle downward, the blade body is a trapezoidal structure, and the right end of the blade body extends to the outside of the right end surface of the push plate, and the height of the lower end of the blade body is lower than the height of the lower end of the push plate.

[0016] Preferably, the spiral conveying mechanism includes a storage bin, a feeding cylinder, an end sealing plate, a spiral blade, a rotating shaft, a reduction motor, and a blocking sleeve. The storage bin is fixedly mounted on the slider of the screw module, the storage bin is connected to the feeding cylinder, and the end sealing plate is installed at the end of the feeding cylinder. The spiral blade passes through the storage bin and the inside of the feeding cylinder and is installed on the storage bin and the end sealing plate through a rotating shaft. The rotating shaft is driven and connected to the reduction motor installed on the storage bin. A blocking sleeve is provided on the outside of the feeding cylinder, and the blocking sleeve can be rotatably mounted between the storage bin and the end sealing plate through a slot. A handle is installed on the blocking sleeve, and the discharge port is arranged at the bottom of the feeding cylinder, and the blocking sleeve is provided with a feed opening whose opening is slightly larger than the discharge port.

[0017] Preferably, the zinc sheet lifting mechanism includes a chain hoist II, a support frame II, a roller II, a lifting cylinder, a plug-in plate frame, and a plug-in plate. The chain hoist II is vertically installed on the rear side of the base frame, and a wheel groove is provided on the frame of the chain hoist II. The support frame II can be lifted and lowered on the chain hoist II through the roller II. The support frame II is fixedly connected to the lifting chain of the chain hoist II. A lifting cylinder is horizontally installed on the support frame II, and a plug-in plate frame is installed at the output end of the lifting cylinder. A plug-in plate is horizontally installed on the plug-in plate frame, and a limit plate for blocking the zinc sheet is also installed on the support plate.

[0018] Preferably, the inserting plate includes a supporting section and a cutting section, the supporting section is horizontally mounted on the inserting plate frame, the cutting section is mounted on the supporting section, the cutting section is a triangular structure, and the upper surface of the cutting section is tilted downward.

[0019] The zinc sheet pushing device for zinc smelting and casting according to any one of the above claims is used, and the zinc sheet pushing method for zinc smelting and casting comprises at least the following steps:

[0020] S1: Stack the zinc sheets neatly on the chassis, scoop up and lift at least one zinc sheet using the zinc sheet lifting mechanism, and the total thickness of the zinc sheet lifted in a single time should be less than or equal to 4 cm;

[0021] S2: Spreading ammonium chloride powder on the zinc sheet below the zinc sheet lifted in step S1 by a spreading mechanism. Spread 5-7g of ammonium chloride powder for each zinc sheet lifted in step S1.

[0022] S3: The zinc sheet pushing mechanism regularly pushes the zinc sheet sprinkled with ammonium chloride powder in step S2 to the industrial frequency induction furnace for melting. The number of zinc sheets pushed is twice the number of zinc sheets lifted in step S1.

[0023] S4: The zinc liquid produced in step S3 is cast and cooled by an ingot casting machine to produce zinc ingots.

[0024] The beneficial effects of the present invention are:

[0025] The zinc sheet lifting mechanism arranged at the rear side of the chassis lifts the zinc sheet, the ammonium chloride powder is scattered between the multiple layers of zinc sheets to be pushed through the scattering mechanism, and the zinc sheet pushing mechanism arranged at the left side of the chassis pushes the zinc sheet into the power frequency induction furnace for subsequent smelting operation, so that the ammonium chloride and the zinc sheet can enter the power frequency induction furnace at the same time, the zinc sheet can be uniformly contacted with the ammonium chloride in the melting process, the ammonium chloride can be prevented from being decomposed in advance, the reaction degree of the ammonium chloride and the zinc oxide can be effectively improved, and therefore the dross output rate in the zinc sheet melting process can be effectively reduced, and the smelting direct recovery rate of the zinc sheet is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present application;

[0027] Figure 2 It is a structural schematic diagram of the present application;

[0028] Figure 3 It is a structural schematic diagram of the present application;

[0029] Figure 4 It is a structural schematic diagram of the present application;

[0030] Figure 5 It is a structural schematic diagram of the present application;

[0031] Figure 6 It is a structural schematic diagram of the present application;

[0032] Figure 7 It is a structural schematic diagram of the present application;

[0033] Figure 8 It is a structural schematic diagram of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme, purpose and effect of the present application obvious and easy to understand, the preferred embodiments of the present application will be described in detail below with reference to the drawings, so that the skilled person can understand.

[0035] It should be noted that in the description of the present application, if there is no clear specification and limitation, the terms "mounting", "connection", "connection", "connection" and the like should be understood broadly, that is, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium.

[0036] In the present application, as Figures 1-8As shown, a zinc sheet pushing device for zinc casting includes a chassis 1, a zinc sheet pushing mechanism 2, a spreading mechanism 3, and a zinc sheet lifting mechanism 4. The chassis 1 is arranged above the feeding port of the power frequency induction furnace. The chassis 1 is used to place zinc sheets 5, and a slot is arranged on the chassis 1 to facilitate the stacking of zinc sheets 5 from the front side of the chassis 1 by a forklift. The left side of the chassis 1 is provided with a zinc sheet pushing mechanism 2, and the zinc sheet pushing mechanism 2 is provided with a spreading mechanism 3 for spreading ammonium chloride powder. The rear side of the chassis 1 is provided with a zinc sheet lifting mechanism 4 for lifting the zinc sheets 5. One or more zinc sheets 5 are lifted by the zinc sheet lifting mechanism 4, and ammonium chloride powder is spread between the lifted zinc sheets 5 and the lower stacked zinc sheets 5 by the spreading mechanism 3. Then the lifting mechanism 4 lowers the lifted zinc sheets 5 onto the lower stacked zinc sheets 5, so that the ammonium chloride powder is compressed between the two layers of zinc sheets 5 on the upper and lower sides by the two layers of zinc sheets 5. Then the zinc sheet pushing mechanism 2 pushes the same number of two layers of zinc sheets 5 on the upper and lower sides of the ammonium chloride powder into the power frequency induction furnace for subsequent casting operation. This can realize the simultaneous entry of ammonium chloride and zinc sheets 5 into the power frequency induction furnace, ensure uniform contact between zinc sheets 5 and ammonium chloride during melting, avoid premature decomposition of ammonium chloride, and improve the reaction degree of ammonium chloride and zinc oxide, thereby effectively reducing the dross output rate during zinc sheet melting, improving the direct recovery rate of zinc sheet casting, reducing the dross output rate to 1.8-2.7%, and increasing the direct recovery rate of zinc sheet casting to 98.0-99.5%.

[0037] In the embodiment, the zinc sheet pushing mechanism 2 comprises a chain hoist I 2-1, a support frame I 2-2, a roller I 2-3, a pushing cylinder 2-4, a push plate frame 2-5, a shovel 2-6, a push plate 2-7 and a vertical column 2-8. The chain hoist I 2-1 is vertically installed on the left side of the chassis 1. A wheel groove 2-9 is arranged on the frame of the chain hoist I 2-1. The support frame I 2-2 is vertically installed on the chain hoist I 2-1 through the roller I 2-3. The support frame I 2-2 is fixedly connected with the lifting chain of the chain hoist I 2-1. The pushing cylinder 2-4 is horizontally installed on the support frame I 2-2. The output end of the pushing cylinder 2-4 is provided with the push plate frame 2-5. The shovel 2-6 is fixedly installed on the push plate frame 2-5. The push plate 2-7 is installed on both sides of the shovel 2-6 through the vertical column 2-8. The support frame I 2-2 is lifted by the chain hoist I 2-1. The shovel 2-6 and the pushing cylinder 2-4 are synchronously lifted by the support frame I 2-2. The shovel 2-6 is pushed by the pushing cylinder 2-4 to separate the zinc sheet 5 to be pushed from the zinc sheets 5 stacked below. Then the push plate 2-7 is pushed by the pushing cylinder 2-4 through the push plate frame 2-5 to push the zinc sheet 5 above the shovel 2-6 into the power frequency induction furnace. In specific application, the visual sensor, displacement sensor and other detection elements can be installed on the chain hoist I 2-1 or the support frame I 2-2 to detect the height of the zinc sheet 5 on the chassis 1 and feed back to control the lifting motor of the chain hoist I 2-1, so as to improve the control accuracy of the chain hoist I 2-1 on the shovel 2-6 on the support frame I 2-2, and further improve the accuracy of the zinc sheet pushing mechanism 2 in pushing the zinc sheet 5.

[0038] Preferably, the shovel 2-6 comprises a knife seat 2-6-1 and a knife body 2-6-2. The knife seat 2-6-1 is fixedly installed on the push plate frame 2-5. The knife body 2-6-2 is downwardly and obliquely installed on the knife seat 2-6-1. The knife body 2-6-2 has a trapezoidal structure, so that the knife body 2-6-2 can be smoothly inserted between the multiple layers of zinc sheets 5, and the knife body 2-6-2 can be prevented from being blocked by two or more zinc sheets 5 due to the irregular stacking of the zinc sheets 5. The right end of the knife body 2-6-2 extends to the outside of the right end face of the push plate 2-7. The height of the lower end of the knife body 2-6-2 is lower than the height of the lower end of the push plate 2-7. The zinc sheet 5 to be pushed can be separated from the zinc sheets 5 stacked below through the knife body 2-6-2. The left end of the zinc sheet 5 to be pushed can be guided to the front of the push plate 2-7 through the guiding effect of the obliquely installed knife body 2-6-2. The accuracy of the shovel 2-6 in separating the zinc sheets 5 can be effectively improved, and the push plate 2-7 can be prevented from pushing other zinc sheets 5.

[0039] In this embodiment, the spreading mechanism 3 includes a support plate 3-1, a screw module 3-2, a spiral conveying mechanism 3-3, a feeding pipe 3-4, and a powder conveying pump 3-5, wherein the support plate 3-1 is fixedly mounted on the support frame I2-2, the screw module 3-2 is horizontally mounted on the support plate 3-1, the slider of the screw module 3-2 is horizontally mounted with a spiral conveying mechanism 3-3 perpendicular to the screw module 3-2, the feed end of the spiral conveying mechanism 3-3 is connected to the powder conveying pump 3-5 for pumping ammonium chloride powder through the feeding pipe 3-4, and ... The bottom shell of the mechanism 3-3 is provided with a discharge port 3-3-0 at a position above the zinc sheet 5, so that the screw conveying mechanism 3-3 is driven by the screw module 3-2 to run at a uniform speed under the zinc sheet 5 lifted by the zinc sheet lifting mechanism 4, and then the screw conveying mechanism 3-3 spreads the ammonium chloride powder pumped by the powder conveying pump 3-5 on the surface of the zinc sheet 5 stacked on the lower layer. The ammonium chloride powder is spread evenly, which can effectively improve the mixing uniformity of the zinc sheet 5 and the ammonium chloride during the melting process, promote the reaction of ammonium chloride and zinc oxide, and thus effectively reduce the slag output rate during the melting process of the zinc sheet 5.

[0040] Preferably, the spiral conveying mechanism 3-3 includes a storage bin 3-3-1, a feeding cylinder 3-3-2, an end sealing plate 3-3-3, a spiral blade 3-3-4, a rotating shaft 3-3-5, a reduction motor 3-3-6, and a blocking sleeve 3-3-7, wherein the storage bin 3-3-1 is fixedly mounted on the slider of the screw module 3-2, the storage bin 3-3-1 is connected to the feeding cylinder 3-3-2, and the end of the feeding cylinder 3-3-2 is installed with an end sealing plate 3-3-3, and the spiral blade 3-3-4 passes through the storage bin 3-3-1 and the feeding cylinder 3-3-2 and is installed through the rotating shaft 3-3-5. On the storage bin 3-3-1 and the end sealing plate 3-3-3, the rotating shaft 3-3-5 is connected to the reduction motor 3-3-6 installed on the storage bin 3-3-1, and the discharge port 3-3-0 is set at the bottom of the feeding cylinder 3-3-2, so that the reduction motor 3-3-6 drives the rotating shaft 3-3-5 to drive the spiral blade 3-3-4 to transport the ammonium chloride powder, and discharges it from the discharge port 3-3-0 at the bottom of the feeding cylinder 3-3-2 to spread it on the surface of the zinc sheet 5, with stable transportation and uniform spreading. By setting the storage bin 3-3-1 at the feeding end of the spiral blade 3-3-4, the powder conveying pump 3-5 can be pumped The delivered ammonium chloride powder is temporarily buffered to prevent the ammonium chloride powder from being directly sprayed out under the action of the pumping force and causing uneven spreading; a blocking sleeve 3-3-7 is sleeved on the outer side of the feeding cylinder 3-3-2, and the blocking sleeve 3-3-7 is rotatably installed between the storage bin 3-3-1 and the end sealing plate 3-3-3 through the card slot 3-3-8. A handle 3-3-7-1 is installed on the blocking sleeve 3-3-7, and a discharge port 3-3-7-2 with an opening slightly larger than the discharge port 3-3-0 is provided on the blocking sleeve 3-3-7, so that the handle 3-3-7 can be used to discharge the zinc flakes 5 during the shutdown period after the zinc flakes 5 are pushed out. -1 Rotate the blocking sleeve 3-3-7 to block the discharge port 3-3-0 at the bottom of the feeding cylinder 3-3-2 to avoid the waste of ammonium chloride powder caused by empty scattering, and rotate the blocking sleeve 3-3-7 when the zinc sheet 5 pushing operation starts, and move the discharge port 3-3-7-2 of the blocking sleeve 3-3-7 to the discharge port 3-3-0 to restore the normal discharge of the feeding cylinder 3-3-2. By making the opening of the discharge port 3-3-7-2 slightly larger than the opening of the discharge port 3-3-0, it is convenient to discharge a small amount of ammonium chloride powder discharged into the blocking sleeve 3-3-7 during the period when the blocking sleeve 3-3-7 blocks the discharge port 3-3-0.

[0041] In this embodiment, the zinc sheet lifting mechanism 4 includes a chain hoist Ⅱ4-1, a support frame Ⅱ4-2, a roller Ⅱ4-3, a lifting cylinder 4-4, a plug-in plate frame 4-5, and a plug-in plate 4-6, wherein the chain hoist Ⅱ4-1 is vertically installed on the rear side of the base frame 1, and a wheel groove 2-9 is provided on the frame of the chain hoist Ⅱ4-1. The support frame Ⅱ4-2 can be lifted and lowered on the chain hoist Ⅱ4-1 through the roller Ⅱ4-3. The support frame Ⅱ4-2 is fixedly connected to the lifting chain of the chain hoist Ⅱ4-1. The lifting cylinder 4-4 is horizontally installed on the support frame Ⅱ4-2, and the plug-in plate frame 4-5 is installed at the output end of the lifting cylinder 4-4. The plug-in plate 4-6 is horizontally installed on the plug-in plate frame 4-5, and the support plate 3-1 is also equipped with a limit plate 4-7 for blocking the zinc sheet 5. Then, the chain hoist Ⅱ4-1 drives the support frame Ⅱ4-2 to rise and fall, and the support frame Ⅱ4-2 drives the inserting plate frame 4-5 and the lifting cylinder 4-4 to rise and fall synchronously, and the lifting cylinder 4-4 pushes the inserting plate 4-6 to be inserted between the two layers of zinc sheets 5 that need to be pushed through the inserting plate frame 4-5, and then the chain hoist Ⅱ4-1 drives the support frame Ⅱ4-2 to rise and lift half of the two layers of zinc sheets 5 that need to be pushed, and wait for the spiral conveying mechanism 3-3 in the spreading mechanism 3 to spread the ammonium chloride powder on the surface of the zinc sheets 5 stacked on the lower layer, and after the screw conveying mechanism 3-3 is reset by the screw module 3-2, the chain hoist Ⅱ4-1 drives the support frame Ⅱ4-2 to descend and put down the lifted zinc sheets 5, so that the two layers of zinc sheets 5 that need to be pushed press the ammonium chloride powder between the two layers of zinc sheets 5, and then the zinc sheets 5 that need to be pushed are pushed into the industrial frequency induction furnace by the zinc sheet pushing mechanism 2 for subsequent smelting and casting operations. A stop plate 4-7 is installed on the support plate 3-1 to block the zinc sheet 5. This prevents the zinc sheet 5 from falling when the inserting plate 4-6 inserts and cuts the zinc sheet 5. In this embodiment, the installation height of the spiral conveying mechanism 3-3 is higher than the height of the push plate frame 2-5 and the push plate 2-7 to prevent the spiral conveying mechanism 3-3 from blocking the pushing action of the push plate 2-7. The width of the spiral conveying mechanism 3-3 is smaller than the distance between the push plate 2-7 and the left end of the inserting plate 4-6 to prevent the spiral conveying mechanism 3-3 from blocking the lifting action of the inserting plate 4-6 after the spreading is completed and the reset is completed. In specific applications, visual sensors, displacement sensors and other detection elements can be installed on the chain hoist Ⅱ4-1 or the support frame Ⅱ4-2 to detect the height of the zinc sheet 5 on the base frame 1, and feedback control the lifting motor of the chain hoist Ⅱ4-1, so as to improve the control accuracy of the chain hoist Ⅱ4-1 on the plug plate 4-6 on the support frame Ⅱ4-2, thereby improving the accuracy of the number of zinc sheets 5 lifted by the zinc sheet lifting mechanism 4.

[0042] Preferably, the inserting plate 4-6 includes a supporting section 4-6-1 and a cutting section 4-6-2, the supporting section 4-6-1 is horizontally mounted on the inserting plate frame 4-5, so as to support the lifted zinc sheet 5 through the supporting section 4-6-1, the cutting section 4-6-2 is mounted on the supporting section 4-6-1, the cutting section 4-6-2 is a triangular structure, and the upper surface of the cutting section 4-6-2 is tilted downward, so as to reduce the contact area between the inserting plate 4-6 and the stacked zinc sheet 5 at the initial stage of cutting, and the inclined surface of the cutting section 4-6-2 guides the zinc sheet 5, so that the inserting plate 4-6 can be smoothly inserted between the multiple layers of zinc sheets 5 through the cutting section 4-6-2, thereby avoiding the inserting plate 4-6 being blocked by two or more zinc sheets 5 due to uneven stacking of the zinc sheets 5.

[0043] Using the above-mentioned zinc sheet pushing device for zinc smelting and casting, one of the methods for pushing the zinc sheet for zinc smelting and casting comprises the following steps:

[0044] S1: stack the zinc sheets 5 neatly on the base frame 1, and scoop up and lift five zinc sheets 5 using the zinc sheet lifting mechanism 4;

[0045] S2: Spread 50-70 g of ammonium chloride powder on the zinc sheet 5 below the zinc sheet 5 lifted in step S1 through the spreading mechanism 3;

[0046] S3: The zinc flakes 5 sprinkled with ammonium chloride powder in step S2 are pushed into the power frequency induction furnace once every 15-20 minutes by the zinc flake pushing mechanism 2 for melting. Ten zinc flakes 5 are pushed each time. The reaction occurring in the power frequency induction furnace is as follows:

[0047] NH4Cl=NH3↑+HCl, ZnO+2HCl=ZnCl2+H2O;

[0048] S4: The zinc liquid produced in step S3 is cast and cooled by an ingot casting machine to produce zinc ingots.

[0049] In specific applications, the number of zinc sheets 5 lifted in step S1 can be increased or decreased according to the melting efficiency of the industrial frequency induction furnace, and the total thickness of the zinc sheets 5 lifted in a single time is less than or equal to 4 cm. Correspondingly, the amount of ammonium chloride powder spread in step S2 is adjusted, wherein each increase or decrease of one zinc sheet 5 corresponds to an increase or decrease of 5-7 g of ammonium chloride powder. Correspondingly, the number of zinc sheets 5 pushed into the industrial frequency induction furnace each time is increased or decreased, and the total thickness of the zinc sheets 5 pushed in a single time is less than or equal to 8 cm, so as to adapt to the melting operation of the industrial frequency induction furnace and improve the smelting efficiency of the zinc sheets 5.

[0050] The present invention lifts the zinc sheet by a zinc sheet lifting mechanism arranged on the rear side of the base frame, spreads ammonium chloride powder between the multiple layers of zinc sheets to be pushed by a spreading mechanism, and pushes the zinc sheet into the industrial frequency induction furnace for subsequent melting and casting operations by a zinc sheet pushing mechanism arranged on the left side of the base frame. The ammonium chloride and the zinc sheet can enter the industrial frequency induction furnace at the same time, ensuring that the zinc sheet is in uniform contact with the ammonium chloride during the melting process, avoiding premature decomposition of the ammonium chloride, and effectively improving the degree of reaction between the ammonium chloride and the zinc oxide, thereby effectively reducing the slag output rate during the melting process of the zinc sheet and improving the direct yield of the melting and casting of the zinc sheet.

[0051] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A zinc sheet pushing device for zinc smelting and casting, characterized by: The zinc sheet pushing device for zinc smelting and casting comprises a base frame (1), a zinc sheet pushing mechanism (2), a spreading mechanism (3), and a zinc sheet lifting mechanism (4); the base frame (1) is arranged above the feed port of the industrial frequency induction furnace; the base frame (1) is used to place the zinc sheet (5); the zinc sheet pushing mechanism (2) is arranged on the left side of the base frame (1); the spreading mechanism (3) for spreading ammonium chloride powder is arranged on the zinc sheet pushing mechanism (2); and the zinc sheet lifting mechanism (4) for lifting the zinc sheet (5) is arranged on the rear side of the base frame (1); The zinc sheet pushing mechanism (2) comprises a chain hoist I (2-1), a support frame I (2-2), a roller I (2-3), a pushing cylinder (2-4), a push plate frame (2-5), a scraper (2-6), a push plate (2-7), and a column (2-8). The chain hoist I (2-1) is vertically installed on the left side of the base frame (1). A wheel groove (2-9) is provided on the frame of the chain hoist I (2-1). The support frame I (2-2) is pushed by the roller I (2- 3) It can be installed on the chain hoist I (2-1) in a lifting manner, the support frame I (2-2) is fixedly connected to the lifting chain of the chain hoist I (2-1), a push cylinder (2-4) is horizontally installed on the support frame I (2-2), a push plate frame (2-5) is installed on the output end of the push cylinder (2-4), the scraper (2-6) is fixedly installed on the push plate frame (2-5), and the push plates (2-7) are installed on both sides of the scraper (2-6) through the columns (2-8); The spreading mechanism (3) comprises a support plate (3-1), a screw module (3-2), a spiral conveying mechanism (3-3), a feeding pipe (3-4), and a powder conveying pump (3-5); the support plate (3-1) is fixedly mounted on a support frame I (2-2); the screw module (3-2) is horizontally mounted on the support plate (3-1); a spiral conveying mechanism (3-3) perpendicular to the screw module (3-2) is horizontally mounted on a slider of the screw module (3-2); a feeding end of the spiral conveying mechanism (3-3) is connected to a powder conveying pump (3-5) for pumping ammonium chloride powder via a feeding pipe (3-4); and a discharge port (3-3-0) is provided on a bottom shell of the spiral conveying mechanism (3-3) located above the zinc sheet (5); The zinc sheet lifting mechanism (4) comprises a chain hoist II (4-1), a support frame II (4-2), a roller II (4-3), a lifting cylinder (4-4), a plug-in plate frame (4-5), and a plug-in plate (4-6). The chain hoist II (4-1) is vertically mounted on the rear side of the base frame (1). A wheel groove (2-9) is provided on the frame of the chain hoist II (4-1). The support frame II (4-2) can be raised and lowered on the chain by means of the roller II (4-3). On the hoist II (4-1), the support frame II (4-2) is fixedly connected to the lifting chain of the chain hoist II (4-1), a lifting cylinder (4-4) is horizontally installed on the support frame II (4-2), an inserting plate frame (4-5) is installed at the output end of the lifting cylinder (4-4), an inserting plate (4-6) is horizontally installed on the inserting plate frame (4-5), and a limiting plate (4-7) for blocking the zinc sheet (5) is also installed on the support plate (3-1).

2. The zinc sheet pushing device for zinc smelting and casting according to claim 1, characterized in that: The scraper (2-6) comprises a blade seat (2-6-1) and a blade body (2-6-2), wherein the blade seat (2-6-1) is fixedly mounted on the push plate frame (2-5), and the blade body (2-6-2) is mounted on the blade seat (2-6-1) in a downwardly inclined manner, wherein the blade body (2-6-2) is a trapezoidal structure, and the right end of the blade body (2-6-2) extends to the outside of the right end surface of the push plate (2-7), and the height of the lower end of the blade body (2-6-2) is lower than the height of the lower end of the push plate (2-7).

3. The zinc sheet pushing device for zinc smelting and casting according to claim 2, characterized in that: The spiral conveying mechanism (3-3) comprises a storage bin (3-3-1), a feeding cylinder (3-3-2), an end sealing plate (3-3-3), a spiral blade (3-3-4), a rotating shaft (3-3-5), a reduction motor (3-3-6), and a blocking sleeve (3-3-7). The storage bin (3-3-1) is fixedly mounted on a slider of a lead screw module (3-2). The storage bin (3-3-1) is connected to the feeding cylinder (3-3-2). An end sealing plate (3-3-3) is mounted on the end of the feeding cylinder (3-3-2). The spiral blade (3-3-4) passes through the storage bin (3-3-1) and the feeding cylinder (3-3-2) and is mounted on the storage bin (3-3-1) via a rotating shaft (3-3-5). 1) and the end sealing plate (3-3-3), the rotating shaft (3-3-5) is connected to the reduction motor (3-3-6) installed on the storage bin (3-3-1), the outer side of the feeding cylinder (3-3-2) is provided with a blocking sleeve (3-3-7), the blocking sleeve (3-3-7) is rotatably installed between the storage bin (3-3-1) and the end sealing plate (3-3-3) through a slot (3-3-8), a handle (3-3-7-1) is installed on the blocking sleeve (3-3-7), the discharge port (3-3-0) is arranged at the bottom of the feeding cylinder (3-3-2), and the blocking sleeve (3-3-7) is provided with a discharge port (3-3-7-2) whose opening is slightly larger than the discharge port (3-3-0).

4. The zinc sheet pushing device for zinc smelting and casting according to claim 1, characterized in that: The inserting plate (4-6) comprises a supporting section (4-6-1) and an inserting and cutting section (4-6-2); the supporting section (4-6-1) is horizontally mounted on the inserting plate frame (4-5); the inserting and cutting section (4-6-2) is mounted on the supporting section (4-6-1); the inserting and cutting section (4-6-2) is a triangular structure, and the upper surface of the inserting and cutting section (4-6-2) is tilted downward.

5. A method for pushing zinc sheets for zinc casting, characterized in that: The zinc sheet pushing device for zinc smelting and casting according to any one of claims 1 to 4 is used, and the zinc sheet pushing method for zinc smelting and casting comprises at least the following steps: S1: neatly stack the zinc sheets (5) on the base frame (1), scoop up and lift at least one zinc sheet (5) through the zinc sheet lifting mechanism (4), and the total thickness of the zinc sheet (5) lifted in a single time is less than or equal to 4 cm; S2: Spreading ammonium chloride powder on the zinc sheet (5) below the zinc sheet (5) lifted in step S1 by the spreading mechanism (3), and spreading 5-7g of ammonium chloride powder for each zinc sheet (5) lifted in step S1; S3: The zinc sheet pushing mechanism (2) pushes the zinc sheet (5) sprinkled with ammonium chloride powder in step S2 to the power frequency induction furnace for melting at a fixed time. The number of zinc sheets (5) pushed is twice the number of zinc sheets (5) lifted in step S1. S4: The zinc liquid produced in step S3 is cast and cooled by an ingot casting machine to produce zinc ingots.

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