A high-purity smelting equipment and method for nickel-based alloy recycled materials

Abstract

The present invention relates to the field of smelting, and specifically to a high-purity smelting equipment and method for nickel-based alloy recycled materials, comprising a distillation furnace, a vacuum generator, a controller, a feed bin, a condensation bin assembly and a one-way valve. The top of the distillation furnace is connected to the vacuum generator and the condensation bin assembly through pipelines respectively. The distillation furnace base and the dehydration bin assembly provided by the present invention use extrusion vanes to squeeze the bottom mud impurity sediment downward during the evaporation of the water content of the mixed liquid, so that the liquid mixture passes through the filter screen into the dehydration bin, and the solid mixture moves to the discharge port for discharge and storage in the discharge bin. The concentrated liquid in the distillation furnace can be continuously discharged from the distillation furnace, so that the concentration of the mixed liquid in the distillation furnace is kept stable, so that the distillation process is always kept in an efficient and stable state. At the same time, the controller controls the automatic replenishment of the feed bin to make the equipment more automated.

Description

Technical Field

[0001] The invention relates to the field of smelting, and in particular to a high-purity smelting equipment and method for nickel-based alloy recycled materials. Background Art

[0002] Nickel-based alloy refers to a type of alloy with comprehensive properties such as high strength and certain resistance to oxidation and corrosion at high temperatures of 650-1000°C, including nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys and nickel-based shape memory alloys. They all have very important applications. Nickel-based alloy smelting equipment is to treat nickel-based high-temperature alloy recycled materials and then perform aging treatment. The nickel-based alloy is heated to a temperature of 600-750°C for 1-16 hours to improve the mechanical properties and structural stability of the material. Through the above steps, high-quality nickel-based alloy materials can be prepared, the utilization rate of the material can be improved, and the load capacity of the material during assembly can be improved.

[0003] Electrode heating equipment can quickly melt various metal raw materials and provide a liquid metal basis for subsequent refining and alloying. By controlling the arc power and melting time, the melting speed and temperature of the metal can be accurately controlled to ensure that the raw materials are fully fused. Electrode heating is a technology that uses the high thermal resistance of water to directly convert electrical energy into thermal energy and generate steam. Vacuum distillation is carried out under reduced pressure and is generally used to separate substances that are easily decomposed when heated to boiling point at normal pressure, or combined with other distillation methods to reduce the distillation temperature and improve separation efficiency.

[0004] When precious metals are refined, the waste liquid produced contains a large amount of precious metals. Common methods for treating the waste liquid are filtration, oxidation, reduction, leaching, and electrolysis. However, general filtration methods cannot completely separate the precious metals, which leads to the loss of precious metals. The discharged waste liquid containing precious metals will also pollute the environment. Distilling and concentrating the waste liquid containing precious metals by vacuum distillation can not only effectively avoid the loss of precious metals, but also the treated wastewater will not pollute the environment. However, the existing vacuum distillation furnace has the following problems when in use: during the distillation process, as the water evaporates, the concentration of the waste liquid increases, the heat transfer efficiency of the waste liquid in the furnace decreases, and the evaporation rate of water slows down. In addition, vacuum distillation cannot automatically discharge the treated precious metal concentrated liquid. As the untreated waste liquid is continuously injected, the concentrated liquid containing precious metals is continuously deposited at the bottom of the vacuum distillation furnace, which reduces the volume in the vacuum distillation furnace, making the vacuum distillation furnace unable to maintain efficient distillation for a long time. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a high-purity smelting equipment and method for nickel-based alloy recycled materials.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a high-purity smelting equipment for nickel-based alloy recycled materials, including a distillation furnace, a vacuum generator, a controller, a feed bin, a condensation bin assembly and a one-way valve, the top of the distillation furnace is connected with the vacuum generator and the condensation bin assembly respectively through pipelines, and a one-way valve is installed on the pipeline between the distillation furnace and the vacuum generator and the condensation bin assembly, a controller is arranged below the vacuum generator, and the controller is electrically connected with the distillation furnace, the vacuum generator and the condensation bin assembly respectively; the distillation furnace includes a distillation furnace base for discharging, a distillation furnace shell is fixedly welded above the distillation furnace base, a dehydration bin is fixedly installed at the center position of the upper end surface of the distillation furnace base by bolts, a distillation bin assembly is fixedly installed on the upper end surface of the dehydration bin assembly, a feed pipe penetrating the distillation furnace shell is fixedly welded on the side wall of the distillation bin assembly, an electrode heating assembly is installed inside the distillation bin assembly, a pressure gauge is fixedly installed on the top of the distillation furnace shell, and the pressure gauge is connected to the inside of the distillation bin assembly.

[0007] Furthermore, the distillation chamber assembly includes a distillation chamber for vacuum distillation, a power distribution chamber is fixedly welded to the upper end surface of the distillation chamber, an isolation plate is fixedly installed between the power distribution chamber and the distillation chamber, an exhaust port is opened in the central area of ​​the isolation plate, and an exhaust interface is connected above the exhaust port through a flange.

[0008] Furthermore, a conical bottom plate is welded to the lower end surface of the distillation chamber, a rotating seat is fixedly welded to the center position of the conical bottom plate, and a connecting flange is fixedly welded to the lower end surface of the conical bottom plate.

[0009] Furthermore, the electrode heating assembly includes a plurality of electrode assemblies arranged inside the distillation chamber, and one end of the electrode assembly is fixedly mounted on the isolation plate by bolts, and the fixed end of the electrode assembly is connected to a heating wire, and the plurality of heating wires are electrically connected to the controller.

[0010] Furthermore, the distillation furnace base includes a discharge bin fixedly welded to the lower end surface of the distillation furnace shell, a discharge pipe is welded at the center position of the discharge bin, a plurality of discharge ports are circumferentially arranged on the outer wall of the discharge pipe, and a discharge baffle is installed at the discharge port, an annular fixing plate is welded on the inside of the discharge bin and the outer wall of the discharge pipe, a plurality of grooves are opened circumferentially on the annular fixing plate, and a support plate is fixedly clamped in the groove, a circular hole is opened at the center position of the support plate, a sliding rod is slidably fitted in the circular hole, and one end of the sliding rod is fixedly screwed on the discharge baffle, a compression spring is sleeved between the discharge baffle and the support plate and on the outer wall of the sliding rod, and a dehydration motor is fixedly installed on the lower end surface of the discharge pipe.

[0011] Furthermore, the dehydration bin assembly includes a dehydration bin fixedly installed between a connecting flange and a discharge pipe by bolts, a filter screen is fixedly clamped at the inner center position of the dehydration bin, an extrusion rod penetrating the dehydration bin and the discharge bin is arranged inside the filter screen, and extrusion vanes are welded on the outer wall of the extrusion rod, the extrusion rod is rotatably fitted between a rotating seat and the bottom surface of the discharge bin, and one end of the extrusion rod is fixedly connected to the output end of the dehydration motor.

[0012] Furthermore, the dehydration bin assembly also includes a reflux pipe connecting the bottom of the dehydration bin and the top of the distillation bin, and a one-way valve is connected to one end of the reflux pipe connected to the distillation bin.

[0013] Furthermore, the condensation bin assembly includes a vacuum bin for collecting steam, the condensation bin is fixedly installed on the lower end surface of the vacuum bin, and an air inlet is fixedly welded on one side of the upper end surface of the vacuum bin, and the air inlet is connected to the distillation furnace.

[0014] Furthermore, an exhaust fan is installed at one end of the interior of the exhaust bin, an exhaust motor is fixedly installed on the upper end surface of the exhaust bin, and the output end of the exhaust motor and the exhaust fan form a matching mechanism, a baffle is provided on one side of the exhaust fan, a rectangular groove for connecting to the condensation bin is opened on the inner side of the baffle, and a guide plate is welded above the rectangular groove.

[0015] Furthermore, the condensation bin includes multiple groups of condensation plates arranged in the condensation bin, and the multiple groups of condensation plates are connected by connecting pipes. Both ends of the connecting pipes are fixedly installed with liquid inlets for introducing and discharging cooling water, and the bottom of the condensation bin is provided with a drain outlet for discharging distilled water.

[0016] The present invention also provides a smelting method using the above-mentioned nickel-based alloy recycled material high-purity smelting equipment, the method comprising the following steps:

[0017] S1, distillation process: the feed bin injects the mixed liquid into the distillation furnace, and the controller controls the supply amount of the feed bin according to the liquid level sensor set in the distillation furnace. When the set liquid level is reached, the feed bin automatically stops supplying, and then the controller controls the vacuum generator to extract the air in the distillation furnace. When the pressure in the distillation furnace is monitored by the pressure gauge and reaches the set pressure, the vacuum generator stops pumping air, and the controller controls the electrode heating component to heat to the specified temperature to distill the mixed liquid in the distillation furnace;

[0018] S2, automatic discharge: During the evaporation of the water in the mixed liquid, it falls along the conical bottom plate to the dehydration bin, and the dehydration motor drives the extrusion rod to rotate, and uses the extrusion rotor to squeeze the sediment of the bottom mud impurities downward, so that the liquid mixture passes through the filter screen into the dehydration bin, and the solid mixture moves to the discharge pipe;

[0019] S3, condensation process: the controller controls the exhaust motor to drive the exhaust fan to exhaust air. The steam generated in the distillation chamber is sucked into the exhaust chamber along the exhaust interface, and is sucked from one end of the exhaust chamber to the rectangular groove opened on the inner side of the baffle, and enters the condensation chamber along the guide plate. In the condensation chamber, it encounters the condensation plate to cool and condense, and is finally discharged from the drain port.

[0020] Beneficial effects of the present invention:

[0021] (1) The distillation furnace base and dehydration bin assembly provided in the present invention, in the process of evaporation of water in the mixed liquid, utilizes the squeezing rotor to squeeze the bottom mud impurity sediment downward, so that the liquid mixture therein passes through the filter screen into the dehydration bin, and the solid mixture moves to the discharge port for discharge and storage in the discharge bin. During this process, the pressure in the distillation furnace is reduced, and the vacuum suction force generated draws the liquid mixture in the dehydration bin into the distillation furnace along the reflux pipe. At the same time, the controller controls the feed bin to refill the material, and the concentrated liquid in the distillation furnace can be continuously discharged from the distillation furnace, so that the concentration of the mixed liquid in the distillation furnace is kept stable, so that the distillation process is always kept in an efficient and stable state. At the same time, the controller controls the feed bin to automatically refill the material, so that the automation degree of the equipment is higher, thereby reducing the pollution of the waste liquid generated during the smelting process of nickel-based alloy recycled materials to the environment.

[0022] (2) The condensation chamber assembly provided in the present invention controls the exhaust motor to drive the exhaust fan to exhaust air through a controller. The steam generated in the distillation chamber is sucked into the exhaust chamber along the exhaust interface, and is sucked from one end of the exhaust chamber to the rectangular groove opened on the inner side of the baffle plate, and enters the condensation chamber along the guide plate. In the condensation chamber, it is cooled and condensed by the condensation plate and finally discharged from the drain port. The steam generated in the distillation chamber can be quickly extracted, reducing the influence of the generated steam on the pressure in the furnace, stabilizing the pressure in the distillation chamber, and maintaining the boiling temperature of the water in the distillation chamber at a relatively low level, thereby improving the energy conversion efficiency of the electrode heating assembly and reducing the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a distillation chamber of a distillation furnace of the present invention;

[0026] Figure 3 The present invention Figure 2 Magnified view of area A in the middle;

[0027] Figure 4 It is a schematic diagram of the structure of the dehydration bin of the distillation furnace of the present invention;

[0028] Figure 5 The present invention Figure 4 Magnified view of area B;

[0029] Figure 6 The present invention Figure 4 Magnified view of area C;

[0030] Figure 7 It is a schematic diagram of the reflux structure of the distillation furnace of the present invention;

[0031] Figure 8 It is a schematic diagram of the top structure of the condensation bin of the present invention;

[0032] Fig. 9 It is a schematic diagram of the internal structure of the condensation bin of the present invention;

[0033] Fig.10 It is a schematic diagram of the one-way valve structure of the present invention.

[0034] In the figure: 1. distillation furnace; 2. vacuum generator; 3. controller; 4. feed bin; 5. condensation bin assembly; 6. one-way valve; 11. distillation furnace shell; 12. distillation furnace base; 13. feed pipe; 14. electrode heating assembly; 15. distillation bin assembly; 16. pressure gauge; 17. dehydration bin assembly; 121. discharge pipe; 122. annular fixing plate; 123. support plate; 124. sliding rod; 125. compression spring; 126. discharge baffle; 127. discharge bin; 128. dehydration motor; 141. Heating wire; 142. Electrode assembly; 151. Distillation chamber; 152. Power distribution chamber; 153. Isolation plate; 154. Exhaust interface; 171. Dehydration chamber; 172. Filter; 173. Extrusion rod; 174. Extrusion rotor; 175. Reflux pipe; 51. Condensation chamber; 52. Vacuum chamber; 53. Air inlet; 511. Condensation plate; 512. Liquid inlet; 513. Connecting pipe; 514. Drain outlet; 521. Exhaust fan; 522. Exhaust motor; 523. Guide plate; 1511. Conical bottom plate; 1512. Rotating seat; 1513. Connecting flange. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figure 1As shown, a high-purity smelting equipment for nickel-based alloy recycled materials described in the present invention includes a distillation furnace 1, a vacuum generator 2, a controller 3, a feed bin 4, a condensation bin assembly 5 and a one-way valve 6. The top of the distillation furnace 1 is connected to the vacuum generator 2 and the condensation bin assembly 5 through pipelines, and a one-way valve 6 is installed on the pipeline between the distillation furnace 1 and the vacuum generator 2 and the condensation bin assembly 5. A controller 3 is arranged below the vacuum generator 2, and the controller 3 is electrically connected to the distillation furnace 1, the vacuum generator 2 and the condensation bin assembly 5, respectively.

[0037] During specific operation, the controller 3 controls the vacuum generator 2 to extract the air in the distillation furnace 1 through the pipeline, and the feed bin 4 injects the waste liquid into the distillation furnace 1 through the injection pump. The boiling point of water is reduced by reducing the air pressure in the distillation furnace 1, and then the heating component is used to heat the mixed liquid to evaporate the water in the mixed liquid. During the evaporation process, the condensation bin component 5 is used to extract the generated steam, and the controller 3 controls the feed bin 4 to inject raw materials according to the pressure in the furnace, so that the pressure in the distillation furnace 1 is stable and the evaporation process is smooth.

[0038] As an embodiment of the present invention, Figure 2-6 and Fig.10 As shown, the distillation furnace 1 includes a distillation furnace base 12 for discharging, a distillation furnace shell 11 is fixedly welded on the top of the distillation furnace base 12, a dehydration bin assembly 17 is fixedly installed on the center position of the upper end surface of the distillation furnace base 12 by bolts, a distillation bin assembly 15 is fixedly installed on the upper end surface of the dehydration bin assembly 17, a feed pipe 13 penetrating the distillation furnace shell 11 is fixedly welded on the side wall of the distillation bin assembly 15, an electrode heating assembly 14 is installed inside the distillation bin assembly 15, a pressure gauge 16 is fixedly installed on the top of the distillation furnace shell 11, and the pressure gauge 16 is connected to the inside of the distillation bin assembly 15, the pressure gauge 16 is electrically connected to the controller 3, and the controller 3 monitors the air pressure of the distillation furnace 1 in real time through the pressure gauge 16.

[0039] The distillation chamber assembly 15 includes a distillation chamber 151 for vacuum distillation, a power distribution chamber 152 is fixedly welded to the upper end surface of the distillation chamber 151, an isolation plate 153 is fixedly installed between the power distribution chamber 152 and the distillation chamber 151, an exhaust port is opened in the central area of ​​the isolation plate 153, and an exhaust interface 154 is connected to the top of the exhaust port through a flange, both ends of the exhaust interface 154 are connected to the vacuum generator 2 and the condensation chamber assembly 5 through pipes, and a one-way valve 6 is installed on the connecting pipe 513 between the exhaust interface 154 and the vacuum generator 2 and the condensation chamber assembly 5, the one-way valve 6 includes a valve body 61, a piston 62 and a reset spring 63, during the process of vacuuming the vacuum generator 2 or the condensation chamber assembly 5, the corresponding one-way valve 6 is opened and the other one-way valve 6 is closed, so that the distillation chamber 151 is always in a closed state.

[0040] The electrode heating assembly 14 includes a plurality of electrode assemblies 142 disposed inside a distillation chamber 151 , and one end of the electrode assembly 142 is fixedly mounted on an isolation plate 153 by bolts, and a heating wire 141 is connected to the fixed end of the electrode assembly 142 , and the plurality of heating wires 141 are electrically connected to a controller 3 .

[0041] During specific operation, the feed bin 4 injects the mixed liquid into the distillation furnace 1, and the controller 3 controls the supply amount of the feed bin 4 according to the liquid level sensor arranged in the distillation furnace 1. When the set liquid level is reached, the feed bin 4 automatically stops supplying, and then the controller 3 controls the vacuum generator 2 to extract the air in the distillation furnace 1. When the pressure in the distillation furnace 1 is monitored by the pressure gauge 16 and the vacuum generator 2 stops pumping air when the pressure reaches the set pressure, the controller 3 controls the electrode heating component 14 to heat to the specified temperature to distill the mixed liquid in the distillation furnace 1.

[0042] As an embodiment of the present invention, Figure 4-Figure 7 As shown, a conical bottom plate 1511 is welded to the lower end surface of the distillation chamber 151 , a rotating seat 1512 is fixedly welded to the center position of the conical bottom plate 1511 , and a connecting flange 1513 is fixedly welded to the lower end surface of the conical bottom plate 1511 .

[0043] The distillation furnace base 12 includes a discharge bin 127 fixedly welded to the lower end surface of the distillation furnace shell 11, a discharge pipe 121 is welded at the center position of the discharge bin 127, a plurality of discharge ports are circumferentially arranged on the outer wall of the discharge pipe 121, and a discharge baffle 126 is installed at the discharge port, an annular fixed plate 122 is welded on the inside of the discharge bin 127 and the outer wall of the discharge pipe 121, a plurality of notches are opened circumferentially on the annular fixed plate 122, and a support plate 123 is fixedly clamped in the notch, a circular hole is opened at the center position of the support plate 123, a sliding rod 124 is slidably fitted in the circular hole, and one end of the sliding rod 124 is fixedly screwed on the discharge baffle 126, a compression spring 125 is sleeved between the discharge baffle 126 and the support plate 123 and on the side outer wall of the sliding rod 124, and a dehydration motor 128 is fixedly installed on the lower end surface of the discharge pipe 121.

[0044] The dehydration bin assembly 17 includes a dehydration bin 171 fixedly installed between a connecting flange 1513 and a discharge pipe 121 by bolts, a filter screen 172 is fixedly connected to the inner center position of the dehydration bin 171, an extrusion rod 173 is arranged inside the filter screen 172 and passes through the dehydration bin 171 and the discharge bin 127, and an extrusion vane 174 is welded on the outer wall of the extrusion rod 173, the extrusion rod 173 is rotatably engaged between the rotating seat 1512 and the bottom surface of the discharge bin 127, and one end of the extrusion rod 173 is fixedly connected to the output end of the dehydration motor 128.

[0045] The dehydration bin assembly 17 further includes a reflux pipe 175 connecting the bottom of the dehydration bin 171 and the top of the distillation bin 151 , and one end of the reflux pipe 175 connected to the distillation bin 151 is connected to a one-way valve 6 .

[0046] During specific operation, as the water content of the mixed liquid is evaporated, the concentration of the mixed liquid gradually increases, and the bottom mud impurities containing precious metals settle to the bottom of the furnace and fall along the conical bottom plate 1511 to the dehydration bin 171. The dehydration motor 128 drives the extrusion rod 173 to rotate, and uses the extrusion vane 174 to squeeze the bottom mud impurity sediment downward, so that the liquid mixture therein passes through the filter screen 172 and enters the dehydration bin 171, so that the solid mixture moves to the discharge pipe 121. When the solid mixture accumulates to a certain volume, under the extrusion of the extrusion vane 174, the solid mixture at the discharge pipe 121 squeezes the discharge baffle 126, the compression spring 125 is compressed, the sliding rod 124 slides backward, and the discharge port is opened. The solid mixture is discharged and stored in the discharge bin 127. During this process, the concentrated liquid and steam in the distillation furnace 1 are continuously discharged to reduce its internal pressure. The vacuum suction in the distillation furnace 1 is used to suck the liquid mixture in the dehydration bin 171 into the distillation furnace 1 along the reflux pipe 175. At the same time, the controller 3 monitors the liquid level in the distillation furnace 1 through the liquid level sensor, and controls the feed bin 4 to replenish the material. In this way, the concentrated liquid in the distillation furnace 1 can be continuously discharged from the distillation furnace 1, so that the concentration of the mixed liquid in the distillation furnace 1 remains stable, and the distillation process always remains in an efficient and stable state. At the same time, the controller 3 controls the automatic replenishment of the feed bin 4 to make the equipment more automated.

[0047] As an embodiment of the present invention, Figure 1 , Figure 8 and Fig. 9 As shown, the condensation bin assembly 5 includes a vacuum bin 52 for collecting steam, a condensation bin 51 is fixedly installed on the lower end surface of the vacuum bin 52, an air inlet 53 is fixedly welded on one side of the upper end surface of the vacuum bin 52, and the air inlet 53 is connected to the distillation furnace 1.

[0048] An exhaust fan 521 is installed at one end of the interior of the exhaust bin 52, and an exhaust motor 522 is fixedly installed on the upper end surface of the exhaust bin 52, and the output end of the exhaust motor 522 and the exhaust fan 521 form a matching mechanism, and a baffle is provided on one side of the exhaust fan 521, and a rectangular groove for connecting to the condensation bin 51 is opened on the inner side of the baffle, and a guide plate 523 is welded above the rectangular groove. The exhaust motor 522 drives the exhaust fan 521 to draw the air in the exhaust bin 52 from the bin chamber at one end to the rectangular groove opened on the inner side of the baffle, and enters the condensation bin 51 along the guide plate 523.

[0049] The condensation bin 51 includes a plurality of condensation plates 511 arranged in the condensation bin 51. The plurality of condensation plates 511 are connected by connecting pipes 513. Liquid inlets 512 for introducing and discharging cooling water are fixedly installed at both ends of the connecting pipes 513. A drain port 514 for discharging distilled water is arranged at the bottom of the condensation bin 51. Condensed water flows into the connecting pipes 513 through the liquid inlet 512 at one end of the condensation bin 51, flows through the plurality of condensation plates 511 through the connecting pipes 513, and then flows out through the liquid inlet 512 at the other end of the condensation bin 51.

[0050] During specific operation, the controller 3 controls the exhaust motor 522 to drive the exhaust fan 521 to exhaust air, and the steam generated in the distillation chamber 151 is drawn into the exhaust chamber 52 along the exhaust interface 154, and is drawn from one end of the exhaust chamber 52 to the rectangular groove opened on the inner side of the baffle, and enters the condensation chamber 51 along the guide plate 523, and is cooled and condensed by the condensation plate 511 in the condensation chamber 51, and is finally discharged from the drain port 514. In this way, the steam generated in the distillation chamber 151 can be quickly extracted, reducing the impact of the generated steam on the pressure in the furnace, stabilizing the pressure in the distillation chamber 151, and maintaining the boiling temperature of the water in the distillation chamber 151 at a relatively low level, thereby improving the energy conversion efficiency of the electrode heating component 14 and reducing the energy consumption of the equipment.

[0051] The present invention also provides a smelting method using the above-mentioned nickel-based alloy recycled material high-purity smelting equipment, the method comprising the following steps:

[0052] S1. Distillation process: the feed bin 4 injects the mixed liquid into the distillation furnace 1, and the controller 3 controls the supply amount of the feed bin 4 according to the liquid level sensor arranged in the distillation furnace 1. When the set liquid level is reached, the feed bin 4 automatically stops supplying, and then the controller 3 controls the vacuum generator 2 to extract the air in the distillation furnace 1. When the pressure in the distillation furnace 1 is monitored by the pressure gauge 16 and the vacuum generator 2 stops pumping air when the pressure reaches the set pressure, the controller 3 controls the electrode heating component 14 to heat to the specified temperature to distill the mixed liquid in the distillation furnace 1.

[0053] S2. Automatic discharge: During the evaporation of the water in the mixed liquid, the concentration of the mixed liquid gradually increases, and the sludge impurities containing precious metals settle to the bottom of the furnace and fall along the conical bottom plate 1511 to the dehydration bin 171. The dehydration motor 128 drives the extrusion rod 173 to rotate, and uses the extrusion vane 174 to squeeze the sludge impurity sediment downward, so that the liquid mixture therein passes through the filter screen 172 and enters the dehydration bin 171, and the solid mixture moves to the discharge pipe 121. When the solid mixture accumulates to a certain volume, under the extrusion of the extrusion vane 174, the solid mixture at the discharge pipe 121 squeezes the discharge baffle 126, the compression spring 125 is compressed, the sliding rod 124 slides backward, and the discharge port is opened to discharge the solid mixture and store it in the discharge bin 127.

[0054] S3, condensation process: the controller 3 controls the exhaust motor 522 to drive the exhaust fan 521 to exhaust air, and the steam generated in the distillation chamber 151 is sucked into the exhaust chamber 52 along the exhaust interface 154, and is sucked from one end of the exhaust chamber 52 to the rectangular groove opened on the inner side of the baffle, and enters the condensation chamber 51 along the guide plate 523, and is cooled and condensed by the condensation plate 511 in the condensation chamber 51, and is finally discharged from the drain port 514, thereby reducing the pollution of the waste liquid generated in the smelting process of nickel-based alloy recycled materials to the environment.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-purity smelting equipment for nickel-based alloy recycled materials, comprising a distillation furnace (1), a vacuum generator (2), a controller (3), a feed bin (4), a condensation bin assembly (5) and a one-way valve (6), characterized in that: The top of the distillation furnace (1) is connected to the vacuum generator (2) and the condensation chamber assembly (5) through pipelines, and a one-way valve (6) is installed on the pipelines between the distillation furnace (1) and the vacuum generator (2) and the condensation chamber assembly (5). A controller (3) is arranged below the vacuum generator (2), and the controller (3) is electrically connected to the distillation furnace (1), the vacuum generator (2) and the condensation chamber assembly (5). The distillation furnace (1) comprises a distillation furnace base (12) for discharging materials, a distillation furnace shell (11) is fixedly welded on the top of the distillation furnace base (12), a dehydration bin assembly (17) is fixedly installed at the center position of the upper end surface of the distillation furnace base (12) by bolts, a distillation bin assembly (15) is fixedly installed on the upper end surface of the dehydration bin assembly (17), a feed pipe (13) penetrating the distillation furnace shell (11) is fixedly welded on the side wall of the distillation bin assembly (15), an electrode heating assembly (14) is installed inside the distillation bin assembly (15), and a pressure gauge (16) is fixedly installed on the top of the distillation furnace shell (11), and the pressure gauge (16) is connected to the inside of the distillation bin assembly (15); The dehydration bin assembly (17) comprises a dehydration bin (171) fixedly mounted between a connecting flange (1513) and a discharge pipe (121) by means of bolts; a filter screen (172) is fixedly clamped at the center of the dehydration bin (171); an extrusion rod (173) penetrating the dehydration bin (171) and the discharge bin (127) is arranged inside the filter screen (172); an extrusion vane (174) is welded to the outer wall of the extrusion rod (173); the extrusion rod (173) is rotatably engaged between a rotating seat (1512) and a bottom surface of the discharge bin (127); and one end of the extrusion rod (173) is fixedly connected to the output end of a dehydration motor (128).

2. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 1 is characterized in that: The distillation chamber assembly (15) comprises a distillation chamber (151) for vacuum distillation, a power distribution chamber (152) being fixedly welded to the upper end surface of the distillation chamber (151), an isolation plate (153) being fixedly installed between the power distribution chamber (152) and the distillation chamber (151), an exhaust port being provided in the central area of ​​the isolation plate (153), and an exhaust interface (154) being connected above the exhaust port via a flange.

3. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 2 is characterized in that: A conical bottom plate (1511) is welded to the lower end surface of the distillation chamber (151), a rotating seat (1512) is fixedly welded to the center of the conical bottom plate (1511), and a connecting flange (1513) is fixedly welded to the lower end surface of the conical bottom plate (1511).

4. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 3 is characterized in that: The electrode heating assembly (14) comprises a plurality of electrode assemblies (142) arranged inside the distillation chamber (151), and one end of the electrode assembly (142) is fixedly mounted on the isolation plate (153) by means of bolts.

5. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 4 is characterized in that: The distillation furnace base (12) comprises a discharge bin (127) fixedly welded to the lower end surface of the distillation furnace shell (11), a discharge pipe (121) is welded at the center of the discharge bin (127), a plurality of discharge ports are arranged circumferentially on the outer wall of the discharge pipe (121), and a discharge baffle (126) is installed at the discharge port, an annular fixing plate (122) is welded inside the discharge bin (127) and on the outer wall of the discharge pipe (121), and a plurality of discharge ports are arranged circumferentially on the outer wall of the discharge pipe (121). A plurality of notches are provided, and a support plate (123) is fixedly clamped in the notches. A circular hole is provided at the center of the support plate (123), a sliding rod (124) is slidably fitted in the circular hole, and one end of the sliding rod (124) is fixedly screwed on a discharge baffle (126). A compression spring (125) is sleeved between the discharge baffle (126) and the support plate (123) and on the side outer wall of the sliding rod (124). A dehydration motor (128) is fixedly mounted on the lower end surface of the discharge pipe (121).

6. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 5 is characterized in that: The dehydration bin assembly (17) further comprises a reflux pipe (175) connecting the bottom of the dehydration bin (171) and the top of the distillation bin (151), and one end of the reflux pipe (175) connected to the distillation bin (151) is connected to a one-way valve (6).

7. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 6 is characterized in that: The condensation bin assembly (5) comprises an exhaust bin (52) for collecting steam, the condensation bin (51) being fixedly mounted on the lower end surface of the exhaust bin (52), an air inlet (53) being fixedly welded on one side of the upper end surface of the exhaust bin (52), and the air inlet (53) being in communication with the distillation furnace (1).

8. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 7 is characterized in that: An exhaust fan (521) is mounted on one end of the interior of the exhaust bin (52); an exhaust motor (522) is fixedly mounted on the upper end surface of the exhaust bin (52); a baffle is provided on one side of the exhaust fan (521); a rectangular groove for connecting to the condensation bin (51) is provided on the inner side of the baffle; a guide plate (523) is welded above the rectangular groove.

9. The high-purity smelting equipment for nickel-based alloy recycled materials according to claim 8, characterized in that: The condensation bin (51) comprises a plurality of groups of condensation plates (511) arranged in the condensation bin (51), the plurality of groups of condensation plates (511) are connected by connecting pipes (513), both ends of the connecting pipes (513) are fixedly provided with liquid inlets (512) for introducing and discharging cooling water, and the bottom of the condensation bin (51) is provided with a drain outlet (514) for discharging distilled water.

10. A smelting method using the high-purity smelting equipment for nickel-based alloy recycled materials according to claim 9, characterized in that: S1, distillation process: the feed bin (4) injects the mixed liquid into the distillation furnace (1), the controller (3) controls the supply amount of the feed bin (4) according to the liquid level sensor provided in the distillation furnace (1), when the set liquid level is reached, the feed bin (4) automatically stops supplying, and then the controller (3) controls the vacuum generator (2) to extract the air in the distillation furnace (1), and when the pressure in the distillation furnace (1) reaches the set pressure monitored by the pressure gauge (16), the vacuum generator (2) stops extracting air, and the controller (3) controls the electrode heating component (14) to heat to a specified temperature to distill the mixed liquid in the distillation furnace (1); S2, automatic discharge: during the process of evaporation of water in the mixed liquid, the mixed liquid falls along the conical bottom plate (1511) to the dehydration bin (171), the dehydration motor (128) drives the extrusion rod (173) to rotate, and the extrusion vanes (174) are used to squeeze the sediment of the bottom mud impurities downward, so that the liquid mixture passes through the filter screen (172) and enters the dehydration bin (171), and the solid mixture moves to the discharge pipe (121); S3, condensation process: the controller (3) controls the exhaust motor (522) to drive the exhaust fan (521) to exhaust air, and the steam generated in the distillation chamber (151) is sucked into the exhaust chamber (52) along the exhaust interface (154), and is sucked from one end of the exhaust chamber (52) to the rectangular groove opened on the inner side of the baffle, and enters the condensation chamber (51) along the guide plate (523), meets the condensation plate (511) in the condensation chamber (51), is cooled and condensed, and is finally discharged from the drain port (514).

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