Rare earth zinc alloy smelting furnace

Abstract

The utility model discloses a rare earth zinc alloy smelting furnace which comprises a furnace body and a feeding mechanism. Wherein the furnace body comprises a smelting chamber and an ingot mould chamber, the smelting chamber is connected with the ingot mould chamber, and an isolation gate valve is arranged between the smelting chamber and the ingot mould chamber; wherein the feeding mechanism comprises a main feeding chamber and an alloy feeding chamber; the main feeding chamber is located on the side face of the smelting chamber, and the main feeding valve is arranged between the main feeding chamber and the smelting chamber. The alloy feeding chamber is located above the smelting chamber, and the alloy feeding valve is arranged between the alloy feeding chamber and the smelting chamber. According to the rare earth zinc alloy smelting furnace, through the multi-cavity design, semi-continuous production in the smelting process and intermittent stable feeding of raw materials can be achieved. Meanwhile, the rare earth zinc alloy smelting furnace can achieve accurate control over the smelting temperature and semi-continuous production of the rare earth zinc alloy, so that effective control over the temperature and components is achieved, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of rare earth zinc alloy smelting technology, and in particular to a rare earth zinc alloy smelting furnace. Background Technology

[0002] Rare earth zinc alloys are an important basic material for rare earth galvanized steel sheets. The application of rare earth zinc alloys in galvanized steel sheets can improve their corrosion resistance by more than 100%, thus showing broad application prospects. However, due to the significant differences in boiling point and density between rare earth elements and zinc, rare earth elements have low solubility in zinc. This leads to problems such as furnace spraying and excessive rare earth segregation during the smelting process of rare earth zinc alloys, affecting personal and equipment safety and product quality.

[0003] CN220959551U discloses a zinc alloy smelting furnace, which includes an outer shell, a second electric heating tube, and a feed inlet. The feed inlet is located at the upper end of the outer shell and is fitted with a sealing valve. An insulation layer is attached to the inner side of the outer shell. A perforated partition plate is installed inside the outer shell. A first electric heating tube is installed on the inner wall of the preheating chamber. A movable sleeve is located at the lower end of the perforated partition plate, and a stirring shaft is located at the lower end of the movable sleeve. Stirring blades are installed on the side of the stirring shaft. The second electric heating tube is located at the lower inner end of the outer shell. The beneficial effects of this utility model patent are: the device preheats the zinc alloy through the preheating chamber; the molten raw material, in small pieces, falls through the perforated partition plate into the heating zone at the bottom of the outer shell for further heating, which improves the melting efficiency of the electric heating tube and saves energy consumption; the device can also stir the zinc alloy using the stirring blades, improving heating efficiency.

[0004] CN111471876B discloses a method for preparing a zinc alloy, which provides a method for preparing a zinc alloy with low oxygen content. This method uses a smelting furnace to prepare the zinc alloy. The smelting furnace is divided into an aluminum melting zone, an alloying zone, and a purification zone by a partition wall. The aluminum melting zone, alloying zone, and purification zone are enclosed at the top and separated by partition walls, but interconnected at the bottom. The top of the aluminum melting zone and the alloying zone are respectively provided with a first feeding port and a second feeding port, and the bottom of the purification zone is provided with a discharge port. The method for preparing the zinc alloy includes the following steps: aluminum ingots are fed into the aluminum melting zone through the first feeding port at the top of the aluminum melting zone, melting the aluminum ingots into molten aluminum; zinc ingots are fed into the alloying zone through the second feeding port at the top of the alloying zone, melting the zinc ingots and mixing them with the molten aluminum; then magnesium ingots are added to the zinc-aluminum molten liquid, melting the magnesium ingots; and the zinc alloy is discharged from the discharge port of the purification zone; the temperature of the molten liquid in the purification zone is 450℃-470℃. The zinc alloy prepared by the method provided by this invention has a low oxygen content.

[0005] However, the smelting schemes disclosed in the aforementioned prior art documents all use non-vacuum devices, which are not suitable for the smelting of rare earth zinc alloys and cannot achieve effective addition of rare earths and uniform and stable composition. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a rare earth zinc alloy smelting furnace, which is suitable for smelting rare earth zinc alloys, solves problems such as temperature control and component segregation, and can achieve effective control of temperature and composition, thereby improving production efficiency and product quality.

[0007] This utility model achieves the above objectives through the following technical solutions.

[0008] This utility model provides a rare earth zinc alloy smelting furnace, which includes a furnace body and a feeding mechanism;

[0009] The furnace body includes a melting chamber and an ingot mold chamber, the melting chamber being connected to the ingot mold chamber, and an isolation gate valve being provided between the melting chamber and the ingot mold chamber;

[0010] The feeding mechanism includes a main feeding chamber and an alloy feeding chamber; the main feeding chamber is located on the side of the melting chamber, and a main feeding valve is disposed between the main feeding chamber and the melting chamber; the alloy feeding chamber is located above the melting chamber, and an alloy feeding valve is disposed between the alloy feeding chamber and the melting chamber.

[0011] This utility model's rare earth zinc alloy smelting furnace, through its multi-chamber design, enables semi-continuous production and intermittent, stable feeding of raw materials. Specifically, an isolation gate valve is installed between the smelting chamber and the ingot mold chamber, allowing for simultaneous ingot unloading and smelting, thus shortening the production cycle. The feeding mechanism includes a main feeding chamber and an alloy feeding chamber, which are connected to or isolated from the smelting chamber via valves, thereby achieving intermittent, stable feeding of raw materials.

[0012] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the isolation gate valve is configured to be able to translate to connect or isolate the smelting chamber and the ingot mold chamber, and the translation of the isolation gate valve is performed by a chain and reducer structure, while the locking of the isolation gate valve is performed by a hydraulic mechanism. The connection or isolation of the two chambers is achieved through translation, and the translation is performed by a chain and reducer structure, while the locking is performed hydraulically. This increases the sealing reliability of the furnace body, especially the smelting chamber, thereby ensuring the uniformity and stability of the zinc alloy composition. In particular, by using a chain and reducer structure, the opening and closing of the gate valve can be performed quickly, thereby improving production efficiency. By using a hydraulic locking mechanism, the gate valve can be closed under greater pressure, thereby ensuring sealing reliability.

[0013] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the main feeding chamber is provided with a main feeding hopper, which is propelled by a motor screw mechanism, and the main feeding hopper is equipped with a pneumatic vibrating hammer. The motor screw propulsion method ensures that the smelting material is continuously and stably added to the crucible. Simultaneously, the pneumatic vibrating hammer is provided to vibrate any stuck material blocks, thereby allowing them to be added to the crucible and preventing material jamming during feeding.

[0014] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, a rare earth alloy feeding rotary device is provided in the alloy feeding chamber. The rare earth alloy feeding rotary device is configured to rotate the alloy feeding hopper located in the alloy feeding chamber to add the alloy material into the crucible in the smelting chamber. Adding the alloy material through a rotary feeding mechanism enables efficient melting of the alloy material, thereby improving smelting efficiency and ensuring the compositional stability of the final alloy product.

[0015] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the rare earth zinc alloy smelting furnace further includes a heating and temperature measuring mechanism, which includes an induction coil and a thermocouple. The induction coil is arranged around the crucible in the smelting chamber, and the thermocouple is embedded in the outer wall of the crucible. Through the induction coil and the embedded thermocouple, precise control of the smelting temperature can be achieved. In addition, a temperature controller is used for temperature control, controlling the power output to achieve automatic heating and temperature control, thereby achieving a temperature control accuracy of ±5℃.

[0016] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the rare earth zinc alloy smelting furnace further includes a vacuum system, which is connected to the smelting chamber, the ingot mold chamber, the main charging chamber, and the alloy charging chamber respectively, to exhaust the gas in each chamber. By exhausting the gas in each chamber through the vacuum system, the smelting furnace can be protected from external influences during the charging, smelting, and ingot unloading processes, thereby improving product quality.

[0017] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the rare earth zinc alloy smelting furnace further includes an ingot mold system, which is configured to move to below the crucible in the smelting chamber before casting the ingot mold, and to move from the smelting chamber to the ingot mold chamber after casting is completed. Specifically, before casting, the ingot mold carriage moves to below the crucible in the smelting chamber. After casting is completed, the ingot mold carriage moves from the smelting chamber to the ingot mold chamber for ingot unloading. Thus, ingot unloading and smelting can be carried out simultaneously, thereby shortening the production cycle.

[0018] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the ingot mold system includes a water-cooled ingot mold, an ingot mold carriage, water-cooled pipes, and an ingot mold moving device. Through the water-cooled ingot mold, ingot mold carriage, water-cooled pipes, and ingot mold moving device, the ingot mold can be effectively cooled and can move between the smelting chamber and the ingot mold chamber, thereby facilitating the operation of the ingot mold. Of course, this utility model is not limited to this; the ingot mold system can be a non-water-cooled mold, and the ingot mold can be non-movable, fixed below the crucible.

[0019] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the furnace body has an inner wall, an outer wall, and reinforcing ribs located between the inner wall and the outer wall, and a cooling path for cooling water to flow through is formed between the inner wall and the outer wall of the furnace body. The reinforcing ribs between the inner wall and the outer wall of the furnace body provide sufficient rigidity and strength. Simultaneously, the cooling path for cooling water to flow through the inner wall and the outer wall of the furnace body allows for a double-layer vertical water-cooled structure.

[0020] According to the rare earth zinc alloy smelting furnace of this utility model, preferably, the rare earth zinc alloy smelting furnace further includes an observation mirror, which is disposed on the smelting chamber, and the observation mirror is provided with a movable heat insulation baffle and a brush structure for dust removal. By providing the heat insulation baffle, the heat insulation baffle can be closed when not observing, to prevent the glass of the observation mirror from being baked by radiant heat for a long time. At the same time, when there is too much deposited material on the lens, the deposited material on the inside of the lens can be brushed off, thereby facilitating observation from the outside.

[0021] This utility model's rare earth zinc alloy smelting furnace achieves intermittent and stable feeding of raw materials through a multi-chamber design; it achieves efficient melting of alloy materials through a rotary feeding mechanism; and it achieves precise control of smelting temperature through pre-embedded thermocouples. Thus, it realizes semi-continuous production of rare earth zinc alloys, achieves effective control of temperature and composition, and improves production efficiency and product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the rare earth zinc alloy smelting furnace of this utility model.

[0023] Figure 2 This is another structural schematic diagram of the rare earth zinc alloy smelting furnace of this utility model.

[0024] Figure 3 This is a top view of the rare earth zinc alloy smelting furnace of this utility model.

[0025] The detailed labeling in the attached figures is as follows:

[0026] 1-Smelting chamber; 11-Crucible; 111-Inner wall; 112-Outer wall; 113-Reinforcing rib; 2-Ingot mold chamber; 3-Isolation gate valve; 4-Main feeding mechanism; 41-Main feeding chamber; 42-Main feeding valve; 43-Main feeding hopper; 44-Motor screw mechanism; 45-Pneumatic vibratory hammer; 5-Alloy feeding mechanism; 51-Alloy feeding chamber; 52-Alloy feeding valve; 53-Lifting and rotating mechanism; 54-Alloy feeding hopper; 55-Rotating mechanism; 56-Wire rope; 6-Heating and temperature measuring mechanism; 61-Induction coil; 62-Power supply device 63-Tilting mechanism; 64-Electrode inlet / outlet; 65-Insulating plate; 66-Cruise holder; 67-Rotating shaft; 68-Temperature measuring and power inlet flange; 7-Vacuum system; 71-Slide valve pump; 72-Roots pump; 73-Pneumatic high vacuum baffle valve; 74-Electromagnetic differential pressure valve; 75-Vacuum pipeline; 76-Dust filter; 77-Vacuum gauge; 78-Vacuum pressure gauge; 79-Measuring gauge; 80-Temperature controller; 9-Ingot mold system; 91-Ingot mold; 92-Ingot mold carriage; 93-Water cooling pipeline; 94-Ingot mold moving device; 10-Observation mirror. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0028] Example 1

[0029] Figure 1 This is a schematic diagram of the structure of the rare earth zinc alloy smelting furnace of this utility model. Figure 2 This is another structural schematic diagram of the rare earth zinc alloy smelting furnace of this utility model, in which some parts are omitted for ease of description. Figure 3 This is a top view of the rare earth zinc alloy smelting furnace of this utility model. Figure 1 and Figure 2 The exhibit showcases different details of the same rare earth zinc alloy smelting furnace.

[0030] The rare earth zinc alloy smelting furnace of this invention includes a furnace body, a feeding mechanism, and a heating and temperature measuring mechanism. Additionally, the rare earth zinc alloy smelting furnace of this invention may also include a vacuum system, an ingot mold system, and an observation mirror.

[0031] The following section will describe in detail the specific structure of each part of the rare earth zinc alloy smelting furnace with reference to the accompanying drawings.

[0032] Furnace body:

[0033] refer to Figure 1 The furnace body consists of two chambers: a melting chamber 1 and an ingot mold chamber 2. Figure 2The crucible 11 is located inside the melting chamber 1 for melting materials. The melting chamber 1 is connected to the ingot mold chamber 2, and an isolation gate valve 3 is provided between the melting chamber 1 and the ingot mold chamber 2. This isolation gate valve 3 is preferably a gate valve. By moving the isolation gate valve 3 up and down, the two chambers, melting chamber 1 and ingot mold chamber 2, can be connected or isolated. The above-mentioned translation operation can be achieved using a chain and reducer structure, and the locking operation of the isolation gate valve 3 can be achieved hydraulically, thereby increasing the sealing reliability of the chambers.

[0034] refer to Figure 2 The furnace body has an inner wall 111, an outer wall 112, and reinforcing ribs 113 located between the inner wall 111 and the outer wall 112. Preferably, the reinforcing ribs 113 are ribs integrally formed on the inner wall 111 or the outer wall 112. Alternatively, the reinforcing ribs 113 are separately provided strip supports. The reinforcing ribs 113 between the inner wall 111 and the outer wall 112 of the furnace body provide sufficient rigidity and strength to the furnace body. Simultaneously, a cooling path for cooling water flow can be formed between the inner wall 111 and the outer wall 112 of the furnace body, thereby enabling the furnace body to form a double-layer vertical water-cooled structure. Specifically, the inner wall 111 is made of 304 stainless steel, and the outer wall 112 and the reinforcing ribs 113 are made of Q235 carbon steel.

[0035] Feeding mechanism:

[0036] refer to Figure 1 The feeding mechanism includes a main feeding mechanism 4 and an alloy feeding mechanism 5. The main feeding mechanism 4 includes a main feeding chamber 41 and a main feeding valve 42. The main feeding chamber 41 is equipped with a main feeding hopper 43, which is pushed by a motor screw mechanism 44. The main feeding mechanism 4 is located on the side of the melting chamber 1, and the main feeding valve 42 is located between the main feeding chamber 41 and the melting chamber 1 to achieve communication or isolation between the main feeding chamber 41 and the melting chamber 1. The main feeding valve 42 is preferably a slide gate valve. When the main feeding mechanism 4 feeds material, the main feeding valve 42 is opened, and the main feeding hopper 43 is pushed to the crucible opening, thereby adding the molten material into the crucible 11 in the melting chamber 1. To prevent material jamming during feeding, the main feeding hopper 43 is equipped with a pneumatic vibrating hammer 45, which is used to apply vibration to the jammed material block to make it fall into the crucible 11.

[0037] refer to Figure 2The alloy feeding mechanism 5 includes an alloy feeding chamber 51 and an alloy feeding valve 52. The alloy feeding chamber 51 is equipped with a rare earth alloy feeding rotary device. The alloy feeding chamber 51 is located directly above the melting chamber 1, and the alloy feeding valve 52 is located below the alloy feeding chamber 51 to provide vacuum isolation between the alloy feeding chamber 51 and the melting chamber 1. Preferably, the alloy feeding valve 52 is a pneumatic slide gate valve. The alloy feeding mechanism 5 preferably also includes a lifting and rotating mechanism 53. Specifically, this lifting and rotating mechanism 53 uses a motor and a winch mechanism, with a rotation speed of 0-30 rpm. When feeding using the alloy feeding mechanism 5, the alloy feeding chamber valve 52 is opened, and the lifting and rotating mechanism 53 lowers the alloy feeding hopper 54, suspended on a wire rope 56, to the crucible opening. At this time, the rotating mechanism 55 rotates and stirs the alloy feeding hopper 54 in the molten material, thereby adding the alloy material into the crucible 11. Figure 2 As shown, the rotating mechanism 55 is disposed above the alloy feeding chamber 51 and the alloy feeding hopper 54. Preferably, the rotating mechanism 55 enables the alloy feeding hopper 54 to rotate about a vertical axis, thereby realizing the rotational stirring of the alloy feeding hopper 54 in the material solution.

[0038] The combination of the main feeding mechanism 4 and the alloy feeding mechanism 5 enables the intermittent and stable addition of smelting raw materials and alloy raw materials.

[0039] Heating and temperature measuring mechanism:

[0040] refer to Figure 1 and Figure 2 The heating and temperature measuring mechanism 6 is located inside the melting chamber 1. The heating and temperature measuring mechanism 6 includes an induction coil 61, a power supply device 62, and a tilting mechanism 63.

[0041] Preferably, the induction coil 61 is made of a flat, round copper tube and is arranged around the crucible 11. A flange connection is used between the induction coil 61 and the inlet / outlet electrodes 64 to increase its strength. Crucible supports 66 are provided on the insulating plates 65 on both sides of the induction coil 61, thereby increasing the rotational support between the induction coil 61 and the inner wall of the furnace, reducing the load on the rotating shaft 67, and preventing deformation of the induction coil 61 and the rotating shaft 67.

[0042] Preferably, the rotating shaft 67 is coaxially powered and has a detachable water-cooled assembly structure. The tilting mechanism 63 is tilted by a motor reducer and connected to the crucible via the rotating shaft 67 to tilt the crucible. Additionally, an insulating sleeve is added between the inner and outer electrodes of the rotating shaft 67 to reduce the probability of leakage. The power supply device 62 is preferably made of wire such as high-quality copper wire.

[0043] A metal crucible is knotted inside the induction coil 61, and preferably, a pre-embedded thermocouple is used for temperature measurement. Specifically, a thermocouple, such as a type K thermocouple, is introduced from the temperature-sensing inlet flange 68 on the furnace wall and pre-embedded in the crucible wall for real-time monitoring of the crucible wall temperature. Furthermore, a temperature controller 80 is used for temperature control, controlling the power output to achieve automatic heating and temperature control. Preferably, the temperature control accuracy is ±5℃.

[0044] Vacuum system:

[0045] refer to Figure 2 and Figure 3 The vacuum system 7 employs a two-stage unit to configure the vacuum pumps, consisting of a slide valve pump 71 and a Roots pump 72. The cold-state ultimate vacuum can reach 5 × 10⁻⁶. -1 Pa. Specifically, the vacuum system 7 includes a slide valve pump 71, a Roots pump 72, a pneumatic high-vacuum baffle valve 73, an electromagnetic differential pressure valve 74, and a vacuum pipeline 75. Preferably, the vacuum system 7 is also equipped with a dust filter 76 to reduce dust contamination of the vacuum pump. The vacuum system 7 also includes a vacuum measurement section, which mainly includes a vacuum gauge 77, a vacuum pressure gauge 78, a measuring gauge 79, and corresponding accessories. Each chamber is connected to the vacuum system 7 through pipelines, enabling the exhaust of gas from the chamber.

[0046] Ingot mold system:

[0047] refer to Figure 1 and Figure 2 The ingot mold system 9 includes a water-cooled ingot mold 91, an ingot mold carriage 92, water-cooled pipes 93, and an ingot mold moving device 94. The ingot mold adopts a plate structure, is made of carbon steel, and is internally divided into multiple groups. The ingot mold carriage 92 is equipped with an ingot mold fixing frame and a water-cooled pipe fixing frame. Preferably, the ingot mold carriage 92 is welded from shaped steel and steel plates, and is equipped with a barrier to prevent steel leakage from damaging the furnace body and the moving track. The water-cooled pipes 93 are made of stainless steel, fixed to the ingot mold carriage 92, and connected to the ingot mold by a metal flexible hose. A drag chain mechanism 95 drives the water-cooled pipes 93 to move synchronously with the ingot mold. The ingot mold moving device 94 includes a track, a chain, and a reducer. The ingot mold system 9 is located in the melting chamber 1 and the ingot mold chamber 2. Before casting, the ingot mold carriage 92 moves to the crucible in the melting chamber 1. After casting, the ingot mold carriage 92 moves from the melting chamber 1 to the ingot mold chamber 2 to unload the ingot, and at the same time closes the isolation gate valve to prepare for the next batch of charging and melting.

[0048] Observation scope:

[0049] An observation sight glass 10 is mounted on the melting chamber 1 for observing the operational status within the chamber. During the melting process, the material releases a large amount of volatile organic compounds, causing material dust to adhere to the sight glass and restricting observation. Therefore, the observation sight glass 10 of this invention employs a single-glass structure with a brush. Preferably, the brush is located on the inward-facing side of the sight glass 10 and can be operated from the outside. When excessive material adheres to the lens, the operator can use the brush to remove the material from the inside of the lens. Simultaneously, the brush has an automatic wear compensation function, thereby increasing its service life. Preferably, the observation sight glass 10 also includes a heat-insulating baffle made of heat-insulating material and located on the inward-facing side of the lens. When not observing, the heat-insulating baffle is closed to prevent the glass of the observation sight glass from being baked by radiant heat for extended periods.

[0050] Example 2

[0051] Except for the following structure, the rest is the same as in Embodiment 1: the ingot mold system is a non-water-cooled mold. For example, the ingot mold system can be equipped with cooling fins instead of water-cooling pipes 93 to cool the ingot mold and the ingot mold carriage.

[0052] Example 3

[0053] Except for the following structure, the rest is the same as in Example 1: the ingot mold is fixed and is fixed below the crucible.

[0054] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model shall fall within the scope of this utility model.

Claims

1. A rare earth zinc alloy smelting furnace, characterized in that, The rare earth zinc alloy smelting furnace includes a furnace body and a feeding mechanism; The furnace body includes a melting chamber and an ingot mold chamber, the melting chamber being connected to the ingot mold chamber, and an isolation gate valve being provided between the melting chamber and the ingot mold chamber; The feeding mechanism includes a main feeding chamber and an alloy feeding chamber; the main feeding chamber is located on the side of the melting chamber, and a main feeding valve is disposed between the main feeding chamber and the melting chamber; the alloy feeding chamber is located above the melting chamber, and an alloy feeding valve is disposed between the alloy feeding chamber and the melting chamber.

2. The rare earth zinc alloy smelting furnace according to claim 1, characterized in that, The isolation gate valve is configured to translate to connect or isolate the melting chamber and the ingot mold chamber, and the translation of the isolation gate valve is performed by a chain and reducer structure, and the locking of the isolation gate valve is performed by a hydraulic mechanism.

3. The rare earth zinc alloy smelting furnace according to claim 1, characterized in that, The main feeding chamber is equipped with a main feeding hopper, which is propelled by a motor screw mechanism, and the main feeding hopper is equipped with a pneumatic vibrating hammer.

4. The rare earth zinc alloy smelting furnace according to claim 1, characterized in that, The alloy feeding chamber is equipped with a rare earth alloy feeding rotary device, which is configured to rotate the alloy feeding hopper located in the alloy feeding chamber to add alloy material into the crucible in the melting chamber.

5. The rare earth zinc alloy smelting furnace according to any one of claims 1 to 4, characterized in that, The rare earth zinc alloy smelting furnace also includes a heating and temperature measuring mechanism, which includes an induction coil and a thermocouple. The induction coil is arranged around the crucible in the smelting chamber, and the thermocouple is embedded in the outer wall of the crucible.

6. The rare earth zinc alloy smelting furnace according to any one of claims 1 to 4, characterized in that, The rare earth zinc alloy smelting furnace also includes a vacuum system, which is connected to the smelting chamber, the ingot mold chamber, the main charging chamber and the alloy charging chamber respectively, to exhaust the gas in each chamber.

7. The rare earth zinc alloy smelting furnace according to any one of claims 1 to 4, characterized in that, The rare earth zinc alloy smelting furnace also includes an ingot mold system configured to move under the crucible in the smelting chamber before casting the ingot mold, and to move from the smelting chamber to the ingot mold chamber after casting is completed.

8. The rare earth zinc alloy smelting furnace according to claim 7, characterized in that, The ingot mold system includes a water-cooled ingot mold, an ingot mold cart, water-cooled pipes, and an ingot mold moving device.

9. The rare earth zinc alloy smelting furnace according to any one of claims 1 to 4, characterized in that, The furnace body has an inner wall, an outer wall, and reinforcing ribs located between the inner wall and the outer wall, and a cooling path through which cooling water flows is formed between the inner wall and the outer wall of the furnace body.

10. The rare earth zinc alloy smelting furnace according to any one of claims 1 to 4, characterized in that, The rare earth zinc alloy smelting furnace also includes an observation mirror, which is installed on the smelting chamber and is equipped with a movable heat insulation baffle and a brush structure for dust removal.

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