A zinc ingot melting furnace feed system and method

Abstract

The present application relates to a kind of zinc ingot melting furnace feed system, including zinc ingot pile, multiple layers of cuboids formed by multiple pieces of the zinc ingot laid single layer cuboid or stack;Melting furnace;Preheating device, is set to the outside of the melting furnace, adjacent to the melting furnace feed port;Pusher device, linear telescopic push mechanism with controller is provided, is located in the preheating device slide starting end side;Lifting device, lifting mechanism with lifting height controller is provided, between the preheating device slide and pusher device, the preheating device slide length is greater than the length of the zinc ingot or zinc ingot pile in the preheating device slide movement direction, less than twice the length of the zinc ingot or zinc ingot pile in the preheating device slide movement direction, in pure mechanical way, instead of manual zinc ingot, compared with mechanical hand feeding, can save investment cost, reduce operating and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of automatic feeding of metal ingots in the non-ferrous smelting industry, and specifically to a feeding system for a zinc ingot melting furnace. Background Technology

[0002] In the zinc bar production process, zinc ingots need to be continuously added to a zinc ingot melting furnace for melting, and then zinc bars are continuously cast from the furnace's outlet. A stable liquid level must be maintained within the melting furnace, which requires a relatively stable frequency of zinc ingot addition. In existing zinc bar production, some older production lines use manual ingot addition, while some advanced lines use fully automated robotic arms, reducing the labor intensity for workers.

[0003] The inventors discovered during their research on existing technologies that:

[0004] In the manual addition method, zinc ingots are added at regular intervals. This increases the labor intensity of workers, and the frequency of zinc addition cannot be guaranteed, causing the liquid level in the zinc ingot melting furnace to fluctuate, affecting the quality of zinc bars. In the industrial robot addition method, the investment cost of robotic arms is very high, the footprint is large, and the maintenance and repair costs during use are high. It requires strong technical support. For small-scale production lines such as zinc bar production, the investment in robotic arms is too high, prolonging the investment payback period. In addition, the existing technology does not preheat the zinc ingots before entering the furnace. Entering the furnace with cold ingots prolongs the melting time, causing large temperature fluctuations in the furnace. For furnaces with automatic temperature control, this increases the instantaneous gas consumption and wastes energy. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, the inventors adopted a preheating technique before the ingot is fed into the furnace and utilized a simple lifting and pushing device to complete the operation of the zinc ingot melting furnace. The technical solution adopted is: a zinc ingot melting furnace feeding system, comprising:

[0006] Zinc ingots;

[0007] A zinc ingot stack is a single-layer cuboid formed by laying multiple zinc ingots flat or a multi-layer cuboid formed by stacking them.

[0008] A melting furnace, a furnace body for melting zinc ingots, wherein the outer wall of the melting furnace is provided with a melting furnace feed port that runs from the outside to the inside, and the size of the melting furnace feed port opening allows the zinc ingots or zinc ingot stacks to pass through;

[0009] A preheating device is installed outside the melting furnace, adjacent to the furnace feed inlet;

[0010] A preheating device slide is provided at the lower part of the preheating device, allowing the zinc ingot or zinc ingot pile to slide through. The end point of the preheating device slide is opposite to the feed port of the melting furnace. When the zinc ingot or zinc ingot pile passes through, the preheating device heats the zinc ingot or zinc ingot pile.

[0011] The pushing device is a linear telescopic pushing mechanism equipped with a controller, located on one side of the starting end of the slide of the preheating device. The telescopic end reciprocates towards the feed port of the melting furnace, pushing the zinc ingot or zinc ingot pile towards the feed port of the melting furnace.

[0012] The lifting device, which includes a lifting mechanism equipped with a lifting height controller, is located between the preheating device slide and the jacking device. The zinc ingot or zinc ingot pile is placed on top of the device. The bottom surface of the zinc ingot or zinc ingot pile is raised above the sliding surface of the preheating device slide when the jacking device moves.

[0013] The length of the preheating device slide is greater than the length of the zinc ingot or zinc ingot pile in the direction of movement of the preheating device slide, but less than twice the length of the zinc ingot or zinc ingot pile in the direction of movement of the preheating device slide.

[0014] Furthermore, it also includes:

[0015] A liquid level monitor, located inside the melting furnace, monitors the liquid level height inside the melting furnace;

[0016] The control system is connected to the liquid level monitor, the jacking device, and the lifting device, and controls the jacking device and the lifting device to transport the zinc ingots or zinc ingot stacks according to the liquid level in the melting furnace.

[0017] Furthermore, it also includes:

[0018] The flue gas system is connected to the melting furnace and the preheating device, and transports the hot flue gas in the melting furnace to the preheating device to heat the zinc ingots or zinc ingot piles using the hot flue gas in the melting furnace.

[0019] Furthermore, it also includes:

[0020] A transport trolley, wherein the lifting device is mounted on the transport trolley;

[0021] The transport trolley track is located on one side of the starting end of the preheating device slide. The transport trolley and the transport trolley track cooperate to transport the lifting device between the preheating device slide and the jacking device.

[0022] A zinc ingot flipping device, a mechanism for flipping the zinc ingots or piles of zinc ingots, is located on the track of the transport trolley and places the flipped zinc ingots or piles of zinc ingots on top of the lifting device.

[0023] Furthermore, a preheating device slide guide is provided at the intersection of the preheating device slide and the lifting device lifting path, and the preheating device slide guide has an arc-shaped chamfer along the lifting path of the lifting device.

[0024] Furthermore, the furnace feed inlet is provided with a feed inlet chute facing the bottom of the furnace.

[0025] Furthermore, the angle between the feed inlet chute and the horizontal ground is from degrees to degrees.

[0026] Furthermore, the preheating device slide is provided with an inclined slide section at an angle that is the same as or similar to that of the feed inlet slide at the same end as the feed inlet slide.

[0027] Furthermore, the preheating device slide rail is provided with positioning plates on both sides of the transport direction of the preheating device slide rail, which are matched with the width of the zinc ingot or zinc ingot stack, and / or the lifting device is provided with positioning plates on both sides of the pushing direction of the pushing device, which are matched with the width of the zinc ingot or zinc ingot stack.

[0028] The preheating device slide positioning plate and the lifting device positioning plate are long strip-shaped structures that support the zinc ingot or zinc ingot stack to prevent it from deflecting during the pushing process.

[0029] A method for feeding zinc ingots into a melting furnace includes the following steps:

[0030] The zinc ingots with trapezoidal cross-sections are bundled into the zinc ingot stack;

[0031] The zinc ingot stack is flipped so that the bottom edge of the trapezoidal cross-section of the zinc ingot is facing upwards using the zinc ingot flipping device.

[0032] The flipped zinc ingots are placed on top of the lifting device;

[0033] Untie the zinc ingot stack;

[0034] The transport trolley transports the lifting device along the transport trolley track to the area between the preheating device slide and the jacking device;

[0035] The lifting device raises the zinc ingots to the top layer of the zinc ingot stack, with the zinc ingots facing the pushing device.

[0036] The pushing device pushes the zinc ingot or a layer of the zinc ingots into the heating range of the preheating device;

[0037] The pushing device retracts;

[0038] The preheating device heats the zinc ingot or a layer of the zinc ingot stack to 150°C to 200°C;

[0039] The control system determines the liquid level in the melting furnace based on the information from the liquid level monitor, and whether it is necessary to add the zinc ingots or a layer of the zinc ingot stack.

[0040] If the determination is yes, a start signal is sent to the lifting device and the pushing device;

[0041] The lifting device raises the top layer of the remaining zinc ingots in the stack so that they are opposite to the pushing device.

[0042] The pushing device pushes the zinc ingot or a layer of the zinc ingots into the heating range of the preheating device;

[0043] The zinc ingots or a layer of zinc ingots that were originally placed within the heating range of the preheating device are pushed by the zinc ingots or a layer of zinc ingots that are subsequently introduced and enter the melting furnace through the furnace feed inlet;

[0044] The control system continues to determine the liquid level height inside the melting furnace based on the liquid level monitor.

[0045] The advantages of this invention over the prior art are: it reduces the labor intensity of workers; it replaces manual zinc ingot feeding with a purely mechanical method, which saves investment costs and reduces operation and maintenance costs compared with robotic feeding; by using the exhaust gas of the melting furnace to preheat the zinc ingots before they enter the furnace, the furnace temperature is stabilized, and the zinc bar production efficiency is improved, saving energy. Attached Figure Description

[0046] Figure 1 This is a front view of a specific embodiment of the present invention;

[0047] Figure 2 This is a top view of a specific embodiment of the present invention;

[0048] Figure 3 This is a partially enlarged view of the guide section of the preheating device slide in a specific embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the zinc ingot stack flipping of the present invention;

[0050] The annotation is represented as follows:

[0051] 100 - Zinc ingot; 110 - Zinc ingot stack;

[0052] 200 - Melting furnace; 210 - Flue gas system; 220 - Melting furnace feed inlet; 221 - Feed inlet chute; 230 - Liquid level monitor;

[0053] 300 - Preheating device; 310 - Preheating device slide rail; 311 - Preheating device slide rail guide; 320 - Preheating device slide rail positioning plate;

[0054] 400 - Lifting device; 410 - Transport trolley; 411 - Transport trolley track; 420 - Lifting device positioning plate;

[0055] 500 - Pricing device;

[0056] 600-Zinc ingot turning device. Detailed Implementation

[0057] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0058] Please see Figures 1 to 4 To overcome the shortcomings of existing technologies, the inventors adopted a preheating technique before the ingot is fed into the furnace and utilized a simple lifting and pushing device to complete the operation of the zinc ingot melting furnace. The technical solution adopted is: a zinc ingot melting furnace feeding system, comprising:

[0059] Zinc ingot 100; generally, for ease of demolding, the zinc ingot is a block structure with an isosceles trapezoidal cross-section. In other embodiments, the zinc ingot 100 may also be a regular cuboid or other block-like structure.

[0060] Zinc ingot stack 110 is a single-layer cuboid formed by paving multiple zinc ingots 100 flat or a multi-layer cuboid formed by stacking them; please refer to [link / reference]. Figure 4 In this embodiment, the zinc ingot stack 110 is made up of multiple zinc ingots 100 stacked in multiple rows and multiple layers. The layering can ensure that the zinc ingots 100 in the upper and lower layers will not interfere with each other during the feeding process.

[0061] A melting furnace 200 is a furnace body for melting the zinc ingots 100. The outer wall of the melting furnace 200 is provided with a melting furnace inlet 220 that runs from the outside to the inside. The size of the melting furnace inlet 220 allows the zinc ingots 100, zinc ingot stacks 110, or single-layer zinc ingot stacks 110 to pass through.

[0062] A preheating device 300 is disposed outside the melting furnace 200 and adjacent to the furnace feed inlet 220. The preheating can be electric heating or fire heating. In this embodiment, the inventors utilize the hot flue gas inside the melting furnace 200 for heating.

[0063] A preheating device slide 310 is provided at the lower part of the preheating device 300, allowing the zinc ingot 100 or zinc ingot pile 110 to slide through. The end point of the preheating device slide 310 is opposite to the furnace feed port 220. When the zinc ingot 100 or zinc ingot pile 110 passes through, the preheating device 300 heats the zinc ingot 100 or zinc ingot pile 110.

[0064] The preheating device slide 310 can have various structural forms, such as a smooth rigid plane, a roller conveyor, etc., as long as the zinc ingot 100 or the zinc ingot stack 110 can slide relative to each other under the action of external force. In this embodiment, please refer to... Figure 1 or Figure 3 The single-layer zinc ingot stack 110 is pushed by the jacking device 500. In some other embodiments, if it is necessary to add a small amount of material frequently, only the zinc ingot 100 can be pushed, or the zinc ingot 100 itself can be in the form of a single layer in the zinc ingot stack 110. That is, in this invention, simply pushing the zinc ingot 100 can also achieve the purpose of this invention.

[0065] The pushing device 500 is a linear telescopic pushing mechanism equipped with a controller, located on one side of the starting end of the preheating device slide 310. Its telescopic end reciprocates towards the melting furnace inlet 220, pushing the zinc ingot 100 or zinc ingot pile 110 towards the melting furnace inlet 220. In some embodiments, to reduce the pushing force of the pushing device 500, while maintaining relative stability of the zinc ingot 100 or zinc ingot pile 110 under friction, the preheating device slide 310 can be provided with a certain slope. The pushing device 500 generally adopts a hydraulic cylinder structure, which is easy to control the stroke; of course, a gear and rack mechanical connection can also be used. Furthermore, the inventors refer to the following for details on the implementation of this embodiment. Figure 3 The top surface of the pushing end of the pushing device 500 is slightly higher than the top surface of the zinc ingot 100 or the zinc ingot pile 110, usually by about 5 mm. This is to provide a small amount of downward pressure on the zinc ingot 100 or the zinc ingot pile 110 during the pushing process, or to prevent the zinc ingot 100 or the zinc ingot pile 110 from tilting. Of course, in order for the pushing device 500 to completely push the zinc ingot 100 or the zinc ingot pile 110 into the preheating device 300, the pushing end of the pushing device 500 must be higher than the top surface of the preheating device slide 310.

[0066] The lifting device 400, equipped with a lifting mechanism and a lifting height controller, is located between the preheating device slide 310 and the pushing device 500. The zinc ingot 100 or zinc ingot pile 110 is placed on top of the lifting device 500. When the pushing device 500 moves, the bottom surface of the zinc ingot 100 or zinc ingot pile 110 is raised above the sliding surface of the preheating device slide 310. In this embodiment, please refer to... Figure 1The inventors used a scissor lift mechanism. In other embodiments, various drive lift methods such as hydraulic or pneumatic drive can also be used.

[0067] The length of the preheating device slide 310 is greater than the length of the zinc ingot 100 or the zinc ingot pile 110 in the direction of movement of the preheating device slide 310, but less than twice the length of the zinc ingot 100 or the zinc ingot pile 110 in the direction of movement of the preheating device slide 310. This length being less than twice the length of the zinc ingot 100 or the zinc ingot pile 110 in the direction of movement of the preheating device slide 310 is one of the inventor's inventive points. Without using a powered preheating device slide 310, thus reducing equipment costs, the material is simply propelled into the furnace using the power of the pusher 500, and the pusher 500 is not directly affected by the heat source of the preheating device 300. This requires two sets of materials to be pushed into the furnace against each other. Although this invention limits the distance to twice the length, in other embodiments, if the pushing force of the pusher 500 is sufficient, it can be set to multiple times. However, multiples can lead to misalignment of multiple sets of materials. Therefore, the inventor set it to within twice the length.

[0068] In another embodiment, it further includes:

[0069] A liquid level monitor 230 is located inside the melting furnace 200 to monitor the liquid level height inside the melting furnace 200;

[0070] The control system is connected to the liquid level monitor 230, the pushing device 500, and the lifting device 400. Based on the liquid level in the melting furnace 200, the pushing device 500 and the lifting device 400 control the pushing device 500 and the lifting device 400 to transport the zinc ingot 100 or the zinc ingot stack 110. The function of the control system is to realize the automation of the entire equipment.

[0071] In another embodiment, it further includes:

[0072] The flue gas system 210 is connected to the melting furnace 200 and the preheating device 300, and transports the hot flue gas from the melting furnace 200 to the preheating device 300 to heat the zinc ingots 100 or the zinc ingot stack 110. The utilization of waste heat in the flue gas system 210 is another inventive aspect. The inventors utilize the flue gas generated during the heating process in the melting furnace 200, transporting it to the preheating device 300 to complete the heating of the material using waste heat. In this embodiment, the preheating device 300 and the inside of the flue are coated with a high-temperature resistant material. If the waste heat flue gas temperature is too high, an air distribution device can be installed in the flue gas system 210 to cool the waste heat flue gas. The waste heat flue gas entering the preheating device 300 typically does not exceed 600°C.

[0073] In another embodiment, it further includes:

[0074] The transport trolley 410, on which the lifting device 400 is mounted;

[0075] The transport trolley track 411 is located on one side of the starting end of the preheating device slide 310. The transport trolley 410 and the transport trolley track 411 cooperate to transport the lifting device 400 between the preheating device slide 310 and the pushing device 500.

[0076] The zinc ingot flipping device 600, a mechanism for flipping the zinc ingot 100 or the zinc ingot pile 110, is located on the transport trolley track 411 and places the flipped zinc ingot 100 or zinc ingot pile 110 on top of the lifting device 400. In this embodiment, the zinc ingot 100 entering the site is a block structure with an isosceles trapezoidal cross-section. The inventors discovered in designing this solution that if the above-mentioned block structure with an isosceles trapezoidal cross-section is pushed forward, the lower part of the zinc ingot 100 is an acute angle. If the pushing force is small, the zinc ingot 100 or zinc ingot pile 110 will rub against the preheating device slide 310. This is because the bottom surface of the zinc ingot 100 forms an acute angle with the vertical surface, while the top surface forms an obtuse angle with the vertical surface. The zinc ingot 100 is cast and has a rough surface with residual slag. During the pushing process, the bottom edge of the zinc ingot 100 rubs severely against the slag, and may even get stuck. To avoid this situation, the inventor flipped the zinc ingot 100 before pushing it, which is also one of the inventive aspects of this invention.

[0077] For preferred options, please refer to [link / reference]. Figure 3 At the intersection of the preheating device slide 310 and the lifting path of the lifting device 400, a preheating device slide guide 311 is also provided, with the preheating device slide guide 311 having an arc-shaped chamfer along the lifting path of the lifting device 400. During the lifting process of the lifting device 400, the flipped zinc ingot 100 will not change position due to an insufficient gap with the preheating device slide 310.

[0078] In other embodiments, to facilitate the feeding of zinc ingots 100 or zinc ingot piles 110 into the furnace, the furnace feed inlet 220 is provided with a feed inlet chute 221 facing the bottom of the furnace 200. The feed inlet chute 221 has an angle of 35 to 45 degrees relative to the horizontal ground, allowing the zinc ingots 100 or zinc ingot piles 110 to be rapidly fed into the furnace under gravity when they are at the end of the preheating device chute 310. Similarly, the preheating device chute 310 has an inclined section at an angle similar to or the same as the feed inlet chute 221 at one end near the furnace feed inlet 220.

[0079] In other embodiments, the preheating device slide 310 is provided with preheating device slide positioning plates 320 on both sides of the transport direction, which are matched with the width of the zinc ingot 100 or the zinc ingot pile 110, and / or the lifting device 400 is provided with lifting device positioning plates 420 on both sides of the pushing direction of the pushing device 500, which are matched with the width of the zinc ingot 100 or the zinc ingot pile 110.

[0080] Please see Figure 3 The preheating device slide positioning plate 320 and the lifting device positioning plate 420 are long strip plate structures, which support the zinc ingot 100 or zinc ingot pile 110 to prevent them from deflecting during the pushing process.

[0081] A method for feeding zinc ingots into a melting furnace includes the following steps:

[0082] The zinc ingots 100 with a trapezoidal cross-section are bundled into the zinc ingot stack 110.

[0083] The zinc ingot flipping device 600 is used to flip the zinc ingot stack 110 so that the bottom edge of the trapezoidal cross-section of the zinc ingot 100 faces upward;

[0084] The flipped zinc ingot pile 110 is placed on top of the lifting device 400;

[0085] Untie the zinc ingot stack 110;

[0086] The transport trolley 410 transports the lifting device 400 along the transport trolley track 411 to the area between the preheating device slide 310 and the jacking device 500;

[0087] The lifting device 400 lifts the zinc ingots 100 to the top layer of the zinc ingot stack 110, opposite the pushing device 500;

[0088] The jacking device 500 pushes the zinc ingot 100 or a layer of the zinc ingot stack 110 into the heating range of the preheating device 300;

[0089] The jacking device 500 retracts;

[0090] The preheating device 300 heats the zinc ingot 100 or a layer of the zinc ingot stack 110 to 150°C to 200°C.

[0091] The control system determines the liquid level in the melting furnace 200 based on the information from the liquid level monitor 230, and whether it is necessary to add the zinc ingot 100 or a layer of the zinc ingot pile 110.

[0092] If the determination is correct, a start signal is sent to the lifting device 400 and the pushing device 500;

[0093] The lifting device 400 lifts the top layer of zinc ingots 100 of the remaining zinc ingot stack 110 so that they are opposite to the pushing device 500;

[0094] The jacking device 500 pushes the zinc ingot 100 or a layer of the zinc ingot stack 110 into the heating range of the preheating device 300;

[0095] The zinc ingot 100 or a layer of zinc ingot pile 110 originally placed within the heating range of the preheating device 300 is pushed by the zinc ingot 100 or a layer of zinc ingot pile 110 that enters later, and enters the melting furnace 200 through the furnace feed port 220;

[0096] The control system continues to determine the liquid level height inside the melting furnace 200 based on the liquid level monitor 230.

[0097] After the control system determines that there is no zinc ingot pile 110 on the top of the lifting device 400, the transport trolley 410 returns to the zinc ingot flipping device 600 to load the zinc ingot pile 110.

[0098] After the lifting device 400 loads the zinc ingot stack 110, it repeats the process of untying the zinc ingot stack 110 and subsequent steps.

[0099] This invention reduces the labor intensity of workers in the field; it replaces manual zinc ingot feeding with a purely mechanical method, which saves investment costs and reduces operation and maintenance costs compared with robotic feeding; by using the exhaust gas of the melting furnace to preheat the zinc ingots before they enter the furnace, the furnace temperature is stabilized, and the zinc bar production efficiency is improved, saving energy.

[0100] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A feeding system for a zinc ingot melting furnace, characterized in that, include: Zinc ingots (100); A stack of zinc ingots (110) is a single-layer cuboid or a multi-layer cuboid formed by paving multiple zinc ingots (100) flat; A melting furnace (200) is a furnace body for melting the zinc ingots (100). The outer wall of the melting furnace (200) is provided with a melting furnace inlet (220) that runs from the outside to the inside. The size of the opening of the melting furnace inlet (220) allows the zinc ingots (100) or zinc ingot stacks (110) to pass through. A preheating device (300) is disposed outside the melting furnace (200) and adjacent to the furnace feed inlet (220); A preheating device slide (310) is provided at the lower part of the preheating device (300) to allow the zinc ingot (100) or zinc ingot pile (110) to slide through. The end point of the preheating device slide (310) is opposite to the furnace feed port (220). When the zinc ingot (100) or zinc ingot pile (110) passes through, the preheating device (300) heats the zinc ingot (100) or zinc ingot pile (110). The pusher device (500) is a linear telescopic pusher mechanism equipped with a controller. It is located on one side of the starting end of the slide (310) of the preheating device. The telescopic end moves back and forth in the direction of the furnace feed port (220) to push the zinc ingot (100) or the zinc ingot pile (110) in the direction of the furnace feed port (220). The lifting device (400) is equipped with a lifting mechanism with a lifting height controller. It is located between the preheating device slide (310) and the pushing device (500). The zinc ingot (100) or zinc ingot pile (110) is placed on top. The bottom surface of the zinc ingot (100) or zinc ingot pile (110) is raised higher than the sliding surface of the preheating device slide (310) when the pushing device (500) moves. The length of the preheating device slide (310) is greater than the length of the zinc ingot (100) or the zinc ingot pile (110) in the direction of movement of the preheating device slide (310), but less than twice the length of the zinc ingot (100) or the zinc ingot pile (110) in the direction of movement of the preheating device slide (310).

2. The zinc ingot melting furnace feeding system according to claim 1, characterized in that, Also includes: A liquid level monitor (230) is located inside the melting furnace (200) to monitor the liquid level height inside the melting furnace (200); The control system is connected to the liquid level monitor (230), the pusher (500), and the lifting device (400) to control the pusher (500) and the lifting device (400) to transport the zinc ingot (100) or the zinc ingot stack (110) according to the liquid level in the melting furnace (200).

3. The zinc ingot melting furnace feeding system according to claim 1, characterized in that, Also includes: The flue gas system (210) is connected to the melting furnace (200) and the preheating device (300) to transport the hot flue gas in the melting furnace (200) to the preheating device (300) and use the hot flue gas in the melting furnace (200) to heat the zinc ingot (100) or the zinc ingot pile (110).

4. The zinc ingot melting furnace feeding system according to claim 2, characterized in that, Also includes: A transport trolley (410), on which the lifting device (400) is mounted; The transport trolley track (411) is located on one side of the starting end of the preheating device slide (310). The transport trolley (410) and the transport trolley track (411) cooperate to transport the lifting device (400) between the preheating device slide (310) and the pushing device (500). The zinc ingot flipping device (600), a mechanism for flipping the zinc ingot (100) or the zinc ingot pile (110), is located on the transport trolley track (411) and places the flipped zinc ingot (100) or zinc ingot pile (110) on top of the lifting device (400).

5. The zinc ingot melting furnace feeding system according to claim 4, characterized in that, At the intersection of the preheating device slide (310) and the lifting path of the lifting device (400), a preheating device slide guide (311) is also provided, and the preheating device slide guide (311) has an arc-shaped chamfer along the lifting path of the lifting device (400).

6. The zinc ingot melting furnace feeding system according to claim 1, characterized in that, The furnace feed inlet (220) is provided with a feed inlet chute (221) facing the bottom of the furnace (200).

7. The zinc ingot melting furnace feeding system according to claim 6, characterized in that, The angle between the feed inlet chute (221) and the horizontal ground is 35 to 45 degrees.

8. The zinc ingot melting furnace feeding system according to claim 7, characterized in that, The preheating device slide (310) has an inclined slide section at an angle that is the same as or similar to that of the feed inlet slide (221) near the furnace inlet (220).

9. The zinc ingot melting furnace feeding system according to claim 1, characterized in that, The preheating device slide (310) is provided with preheating device slide positioning plates (320) on both sides of the transport direction, which are matched with the width of the zinc ingot (100) or zinc ingot pile (110), and / or the lifting device (400) is provided with lifting device positioning plates (420) on both sides of the pushing direction of the pushing device (500), which are matched with the width of the zinc ingot (100) or zinc ingot pile (110). The preheating device slide positioning plate (320) and the lifting device positioning plate (420) are long strip-shaped structures that support the zinc ingot (100) or zinc ingot pile (110) to prevent deflection during the pushing process.

10. The feeding method of the zinc ingot melting furnace feeding system as described in any one of claims 1-9, characterized in that, Includes the following steps: The zinc ingots (100) with trapezoidal cross-sections are tied together to form the zinc ingot stack (110). The zinc ingot stack (110) is flipped so that the bottom edge of the trapezoidal cross-section of the zinc ingot (100) faces upwards using the zinc ingot flipping device (600); The flipped zinc ingot stack (110) is placed on top of the lifting device (400); Release the binding of the zinc ingot stack (110); The transport trolley (410) transports the lifting device (400) along the transport trolley track (411) to the space between the preheating device slide (310) and the jacking device (500); The lifting device (400) lifts the zinc ingots (100) to the top layer of the zinc ingot pile (110) opposite the pushing device (500); The pushing device (500) pushes the zinc ingot (100) or a layer of the zinc ingot stack (110) into the heating range of the preheating device (300); The pushing device (500) retracts; The preheating device (300) heats the zinc ingot (100) or a layer of the zinc ingot stack (110) to 150°C to 200°C; The control system determines the liquid level in the melting furnace (200) based on the information from the liquid level monitor (230) to determine whether it is necessary to add the zinc ingot (100) or a layer of the zinc ingot stack (110). If the determination is correct, a start signal is sent to the lifting device (400) and the pushing device (500); The lifting device (400) lifts the top layer of zinc ingots (100) of the remaining zinc ingot pile (110) so that they are opposite to the pushing device (500); The pushing device (500) pushes the zinc ingot (100) or a layer of the zinc ingot stack (110) into the heating range of the preheating device (300); The zinc ingot (100) or a layer of zinc ingots (110) originally placed within the heating range of the preheating device (300) is pushed by the zinc ingot (100) or a layer of zinc ingots (110) that enters later, and enters the melting furnace (200) through the furnace feed port (220); The control system continues to monitor the liquid level height inside the melting furnace (200) based on the liquid level monitor (230).

Images