Nickel-phosphorus intermediate alloy preparation device under atmosphere protection

Abstract

The invention discloses a nickel-phosphorus intermediate alloy preparation device under atmosphere protection, the nickel-phosphorus intermediate alloy preparation device comprises an air pressure adjusting mechanism, a smelting mechanism and a waste gas collecting mechanism which are communicated in sequence, the air pressure adjusting mechanism comprises a gas cylinder and a vacuum pump which are communicated with the smelting mechanism, and the gas cylinder is filled with gas for adjusting and controlling the internal air pressure of the smelting mechanism; the gas cylinder is communicated with the smelting mechanism through a first pipeline, a gas flow controller is arranged on the first pipeline, and the smelting mechanism comprises a furnace body, a smelting part and a casting forming part, according to the preparation device, the air pressure adjusting mechanism is arranged and used for vacuumizing the smelting mechanism and then inflating the smelting mechanism to control the pressure, air in the smelting environment can be exhausted, it is avoided that raw material red phosphorus reacts with oxygen to form P2O5 poisonous gas, and the pressure in the smelting mechanism can be adjusted and controlled through the air flow controller; and therefore, the yield of the phosphorus element is increased, and the method is suitable for the technical field of alloy preparation and forming.

Description

Technical Field

[0001] The invention belongs to the technical field of alloy preparation and forming, and in particular relates to a device for preparing a nickel-phosphorus master alloy under atmosphere protection. Background Art

[0002] In order to improve the creep resistance of high-temperature alloys (GH4169, GH2761 and GH2130 alloys, etc.) used for aircraft engine parts, an appropriate amount of phosphorus is added during the smelting process to improve the alloy properties. However, the ignition point of elemental phosphorus is low (white phosphorus is 40°C, red phosphorus is 260°C), and direct addition is easy to burn and react with oxygen to form P2O5 toxic gas. Therefore, in the current industry, phosphorus is usually added to high-temperature alloys in the form of nickel-phosphorus alloys.

[0003] The Chinese invention patent "A Nickel-Phosphorus Alloy Forming Equipment" (publication number CN115287478A) covers a layer of red sand on red phosphorus powder, places a nickel block on the red sand to heat and melt it, and then breaks through the red sand layer to allow the nickel and phosphorus to fully react to produce a nickel-phosphorus alloy; however, this method causes severe splashing of the alloy liquid during the process of breaking through the red sand layer, which can easily burn people, and the broken red sand is not cleaned up later and exists in the alloy to form inclusions, reducing the quality of the alloy.

[0004] The Chinese invention patent "A method and device for preparing a nickel-phosphorus alloy" (publication number CN116574931A) uses the phosphorus blowing method to send red phosphorus powder into nickel liquid for reaction to form a nickel-phosphorus alloy. Since the melting point of red phosphorus is very low, and the temperature of the molten nickel block is relatively high, a large amount of red phosphorus powder will evaporate to form phosphorus vapor before it completely enters the nickel liquid, resulting in a low phosphorus recovery rate. In addition, a large amount of phosphorus vapor will instantly increase the furnace pressure, posing a production risk.

[0005] Therefore, it is necessary to design a device that can safely prepare nickel-phosphorus master alloy. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a nickel-phosphorus master alloy preparation device under atmosphere protection. The preparation device is provided with a gas pressure regulating mechanism for filling the smelting mechanism with gas after vacuuming, and can discharge the air in the smelting environment to avoid the raw material red phosphorus reacting with oxygen to form P2O5 toxic gas, and by providing a gas flow controller, the pressure inside the smelting mechanism can be regulated to avoid the escape of phosphorus vapor formed after heating red phosphorus, thereby improving the phosphorus element recovery rate and solving the problem of safety hazards in the existing nickel-phosphorus master alloy preparation device.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a device for preparing nickel-phosphorus master alloy under atmosphere protection, characterized in that it includes a gas pressure regulating mechanism, a smelting mechanism and a waste gas collecting mechanism connected in sequence, the gas pressure regulating mechanism includes a gas cylinder and a vacuum pump connected to the smelting mechanism, the gas cylinder contains gas for regulating the internal air pressure of the smelting mechanism, the gas cylinder is connected to the smelting mechanism through a first pipeline, a gas flow controller is arranged on the first pipeline, and the smelting mechanism includes a furnace body and a smelting component and a casting forming component arranged inside the furnace body.

[0008] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the vacuum pump is connected to the smelting mechanism through a second pipeline, and a first valve is provided on the second pipeline.

[0009] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that a furnace cover is arranged on the top of the furnace body, and a pressure monitor and an observation window are arranged on the furnace cover.

[0010] The above-mentioned device for preparing nickel-phosphorus intermediate alloy under atmosphere protection is characterized in that the casting forming component includes a chute and a mold connected to the chute, the mold has multiple ingot molds and a channel for connecting the ingot mold and the chute, and a support column is arranged at the bottom end of the chute.

[0011] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the length and width of the ingot mold are both 50mm~200mm, and the depth is 30mm~50mm.

[0012] The above-mentioned device for preparing nickel-phosphorus intermediate alloy under atmosphere protection is characterized in that the smelting component includes a crucible, an induction heating coil is arranged on the crucible, and a first protrusion and a second protrusion are respectively arranged on both sides of the outer wall of the crucible, the first protrusion and the second protrusion are both connected to a support frame, and the first protrusion is fixedly connected to a motor; the two support frames are both provided with through holes, and the first protrusion and the second protrusion are both gap-matched with the through holes of the support frames.

[0013] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the motor is placed outside the furnace body, and the output shaft of the motor passes through the side wall of the furnace body and is fixedly connected to the first protruding piece through a coupling.

[0014] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the exhaust gas collection mechanism includes a water tank and a third pipe for connecting the water tank and the furnace body, and a filter screen and a second valve are provided at one end of the third pipe away from the water tank.

[0015] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the filter screen is a foam ceramic filter screen.

[0016] The above-mentioned device for preparing nickel-phosphorus master alloy under atmosphere protection is characterized in that the method for preparing nickel-phosphorus master alloy using the device comprises the following steps: Step 1: Put red phosphorus and metallic nickel into the smelting part; Step 2: using a gas pressure regulating mechanism to sequentially evacuate and regulate the gas pressure of the smelting mechanism, wherein the gas pressure regulation is to fill the smelting mechanism with gas through a gas cylinder; Step 3: Open the third pipeline of the waste gas collection mechanism to regulate the gas flow direction, heat the red phosphorus and metal nickel placed in the smelting component in step 1, and regulate the pressure of the smelting mechanism as the heating proceeds; Step 4: After the red phosphorus and metallic nickel are melted, pour them into the casting part, and obtain the nickel-phosphorus master alloy after cooling.

[0017] Compared with the prior art, the present invention has the following advantages: 1. The present invention provides a gas pressure regulating mechanism for adjusting the pressure by filling the smelting mechanism with gas after evacuating the smelting mechanism, thereby discharging the air in the smelting environment to avoid the self-combustion loss of the raw material red phosphorus and oxygen and the reaction to form P2O5 toxic gas. In addition, the gas flow controller can be provided to regulate the pressure inside the smelting mechanism to avoid the escape of phosphorus vapor formed after the red phosphorus is heated, thereby improving the recovery rate of phosphorus element and reducing the potential safety hazards in the preparation device.

[0018] 2. The casting component of the present invention is provided with a mold having multiple ingot molds as a forming mold, which can form multiple small-sized nickel-phosphorus intermediate alloy blocks at one time and can be directly used in subsequent high-temperature alloy smelting without crushing processing.

[0019] 3. The present invention provides a gas pressure regulating mechanism for circulating gas washing in the smelting mechanism to avoid the introduction of gas impurity elements such as O and N into the nickel-phosphorus master alloy; and provides an induction heating coil on the crucible to heat and melt the raw materials and stir the melt to make the nickel and phosphorus elements evenly distributed, which is beneficial to improving the homogeneity of the nickel-phosphorus master alloy and further improving the quality of the prepared nickel-phosphorus master alloy.

[0020] 4. The present invention provides an exhaust gas collection mechanism to collect the escaped phosphorus vapor, and provides a foam ceramic filter to block and collect the phosphorus vapor for the first time. The phosphorus vapor not blocked by the foam ceramic filter is collected for the second time through a water pool. The phosphorus vapor collected twice can be taken out and reused, thereby avoiding pollution of the device by the phosphorus vapor and waste of the phosphorus vapor.

[0021] 5. The present invention discharges the air in the smelting environment through a vacuum pump to avoid the formation of P2O5 toxic gas, and then controls the pressure inside the furnace body through a gas cylinder and a gas flow controller, so that the pressure inside the furnace body is equivalent to the pressure of phosphorus vapor generated in the smelting component, reducing the probability of forming phosphorus vapor after the red phosphorus is melted, and thus preventing the small amount of phosphorus vapor formed from escaping in large quantities due to the pressure difference; at the same time, the pressure inside the furnace body can be made equivalent to the pressure of phosphorus vapor generated in the smelting component, and the phosphorus vapor generated by heating can be prevented from significantly increasing the internal pressure of the smelting component, causing excessive pressure difference and easy explosion during the smelting process; and by combining the gas flow controller on the control gas cylinder and the second valve on the third pipeline, the internal pressure of the furnace body can be controlled throughout the process to be adjusted along with the phosphorus vapor pressure in the smelting component, further reducing the probability of explosion due to excessive pressure in the smelting component.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the device for preparing nickel-phosphorus master alloy of the present invention.

[0024] Figure 2 It is a side structural schematic diagram of the smelting components of the nickel-phosphorus master alloy preparation device of the present invention.

[0025] Figure 3 This is a schematic structural diagram of the mold according to Example 1 of the present invention.

[0026] Figure 4 This is a schematic structural diagram of the mold of Example 2 of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the mold of Example 3 of the present invention.

[0028] Description of reference numerals: 1—gas cylinder; 2—vacuum pump; 3—first pipeline; 4—gas flow controller; 5—second pipeline; 6—first valve; 7—chute; 8—mould; 9—crucible; 10—furnace body; 11—furnace cover; 12—pressure monitor; 13—observation window; 14—induction heating coil; 15—motor; 16—support frame; 17—first protrusion; 18—second protrusion; 19—water tank; 20—channel; 21—ingot mould; 22—third pipeline; 23—filter; 24—second valve; 25—support column. DETAILED DESCRIPTION

[0029] Example 1 like Figure 1As shown, the nickel-phosphorus master alloy preparation device of this embodiment includes a gas pressure regulating mechanism, a smelting mechanism and a waste gas collecting mechanism connected in sequence, the gas pressure regulating mechanism includes a gas cylinder 1 and a vacuum pump 2 connected to the smelting mechanism, the gas cylinder 1 contains gas for regulating the internal gas pressure of the smelting mechanism, the gas cylinder 1 is connected to the smelting mechanism through a first pipeline 3, and a gas flow controller 4 is arranged on the first pipeline 3; the smelting mechanism includes a furnace body 10 and a smelting component and a casting forming component arranged inside the furnace body 10. In actual use, in this embodiment, a smelting mechanism is provided for smelting and preparing the nickel-phosphorus master alloy, a waste gas collection mechanism is provided for collecting phosphorus vapor emitted during the preparation of the nickel-phosphorus master alloy, and the air flow in the smelting mechanism is directed from the air pressure regulating mechanism to the waste gas collection mechanism; a gas cylinder 1 and a vacuum pump 2 are provided to adjust the air pressure after exhausting the air inside the smelting mechanism, a first pipeline 3 is provided to connect the smelting mechanism with the gas cylinder 1, and a gas flow controller 4 is provided on the first pipeline 3 to control the flow rate of the gas in the gas cylinder 1 flowing into the smelting mechanism; By providing the furnace body 10, the smelting mechanism forms a closed container isolated from the atmosphere, and a vacuum pump 2 can be used for evacuation. The gas cylinder 1 and the gas flow controller 4 are used to fill the furnace body 10 with gas to adjust the pressure, so that the pressure in the furnace body 10 can be equivalent to the pressure of phosphorus vapor generated in the smelting component, thereby reducing the probability of phosphorus vapor being formed after the red phosphorus is melted, reducing the escape of phosphorus vapor, and preventing phosphorus vapor from significantly increasing the internal pressure of the smelting component to cause safety hazards; preferably, in this embodiment, the gas in the gas cylinder 1 is an inert gas, which does not react with the raw material of the nickel-phosphorus master alloy and does not introduce impurities; a smelting component is provided for smelting the raw material to form a melt, and a casting forming component is provided to form an ingot from the melt.

[0030] like Figure 1 As shown, further, in this embodiment, the vacuum pump 2 is connected to the smelting mechanism through a second pipeline 5, and a first valve 6 is provided on the second pipeline 5.

[0031] In actual use, in this embodiment, the smelting mechanism is connected to the vacuum pump 2 by providing a second pipeline 5 , and a first valve 6 is provided on the second pipeline 5 to control the connection or closing between the smelting mechanism and the vacuum pump 2 .

[0032] like Figure 1 As shown, further, in this embodiment, a furnace cover 11 is provided on the top of the furnace body 10 , and a pressure monitor 12 and an observation window 13 are provided on the furnace cover 11 .

[0033] In actual use, in this embodiment, a furnace cover 11 is provided on the top of the furnace body 10 to place raw materials into the furnace body 10 and take out the formed ingots; a pressure monitor 12 is provided to monitor the pressure in the furnace body 10, and an observation window 13 is provided to observe the melting degree of the raw materials in the smelting part, thereby determining the casting time and adjusting the casting angle and position.

[0034] like Figure 1 and Figure 3 As shown, further, in this embodiment, the casting forming component includes a chute 7 and a mold 8 connected to the chute 7, the mold 8 has a plurality of ingot molds 21 and a channel 20 for connecting the ingot molds 21 and the chute 7, and a support column 25 is provided at the bottom end of the chute 7.

[0035] In actual use, in this embodiment, a chute 7 is provided to allow the melt to pass through the chute 7 into the mold 8 for cooling and forming. A plurality of ingot molds 21 and a channel 20 connecting the ingot molds 21 and the chute 7 are opened inside the mold 8, so that the melt can pass through the chute 7 and the channel 20 to reach the inside of the ingot mold 21, thereby forming a plurality of ingots at one time. A support column 25 is provided to keep the chute 7 stable.

[0036] like Figure 3 As shown, further, in this embodiment, the length and width of the ingot mold 21 are both 100 mm, and the depth is 40 mm.

[0037] In actual use, in this embodiment, the size of the ingot mold 21 is set to control the size of the ingot, and the ingot of this size can be directly used for high-temperature alloy smelting without crushing; after the melt is poured into the mold 8 from the chute 7, it enters the branch channels 20 from the main channel 20 in the mold 8, and then enters the interior of each ingot mold 21 to form a plurality of nickel-phosphorus intermediate alloy blocks.

[0038] like Figure 1 and Figure 2 As shown, further, in this embodiment, the smelting component includes a crucible 9, an induction heating coil 14 is arranged on the crucible 9, and a first protrusion 17 and a second protrusion 18 are respectively provided on both sides of the outer wall of the crucible 9, the first protrusion 17 and the second protrusion 18 are both connected to a support frame 16, and the first protrusion 17 is fixedly connected to a motor 15; the two support frames 16 are both provided with through holes, and the first protrusion 17 and the second protrusion 18 are both matched with the through hole gap of the support frame 16.

[0039] In actual use, in this embodiment, a crucible 9 is provided as a smelting container, and an induction heating coil 14 is provided on the crucible 9 to heat the raw materials and stir the melt formed by heating; a first protrusion 17 and a second protrusion 18 and a support frame 16 are provided to support the crucible 9 to keep it stable, and the first protrusion 17 and the second protrusion 18 are provided to match the through-hole clearance of the support frame 16, and the motor 15 is fixedly connected to the first protrusion 17, so that the crucible 9 can be driven by the control motor 15 to rotate, and the smelted melt can be poured into the casting component; preferably, in this embodiment, the crucible 9 is made of alumina. Compared with graphite or other materials, the crucible 9 made of alumina is not easy to react with the melt, so the introduction of impurities can be avoided.

[0040] like Figure 2 As shown, further, in this embodiment, the motor 15 is placed outside the furnace body 10, and the output shaft of the motor 15 passes through the side wall of the furnace body 10 and is fixedly connected to the first protruding member 17 through a coupling.

[0041] In actual use, in this embodiment, by arranging the motor 15 outside the furnace body 10 , it is convenient to control the rotation of the motor 15 to control the tilting angle of the crucible 9 .

[0042] like Figure 1 As shown, further, in this embodiment, the exhaust gas collecting mechanism includes a water tank 19 and a third pipe 22 for connecting the water tank 19 and the furnace body 10, and a filter screen 23 and a second valve 24 are provided at one end of the third pipe 22 away from the water tank 19.

[0043] In actual use, in this embodiment, a water tank 19 is provided to be connected with the furnace body 10 through a third pipe 22, and is used to collect phosphorus vapor dissipated in the furnace body 10. Argon gas is continuously delivered to the furnace body 10 through the gas cylinder 1, so that the airflow in the furnace body 10 carries the phosphorus vapor to the water tank 19; a filter 23 is provided at one end of the third pipe 22 away from the water tank 19 to preliminarily collect the phosphorus vapor. The phosphorus vapor not collected by the filter 23 enters the water tank 19 along the third pipe 22, and precipitates after contacting with the water in the water tank 19. After the preparation of the nickel-phosphorus master alloy is completed, the phosphorus vapor collected twice is recovered, and the obtained phosphorus powder can be reused; By setting the second valve 24 and closing the second valve 24 during vacuuming, the furnace body 10 is sealed; when the gas cylinder 1 delivers argon gas, the second valve 24 is opened and adjusted to keep the internal air pressure of the furnace body 10 at an appropriate level and control the flow direction of the airflow, which is beneficial to collecting the escaped phosphorus vapor.

[0044] like Figure 1 As shown, further, in this embodiment, the filter screen 23 is a foam ceramic filter screen.

[0045] In actual use, the porous ceramic foam filter screen in this embodiment can effectively block and collect the phosphorus vapor escaping from the furnace body 10 .

[0046] Example 2 The difference between this embodiment and embodiment 1 is that: Figure 4 As shown, further, in this embodiment, the length and width of the ingot mold 21 are both 200 mm, and the depth is 50 mm.

[0047] In actual use, after the melt is cast from the chute 7 into the mold 8 in this embodiment, it enters into each ingot mold 21 in sequence from the channel 20 to form a plurality of nickel-phosphorus master alloy blocks.

[0048] Example 3 The difference between this embodiment and embodiment 1 is that: Figure 5 As shown, further, in this embodiment, the length and width of the ingot mold 21 are both 50 mm, and the depth is 30 mm; the gas in the gas cylinder 1 is argon.

[0049] In actual use, after the melt is cast from the chute 7 into the mold 8 in this embodiment, it enters into each ingot mold 21 in sequence from the multiple channels 20 to form multiple nickel-phosphorus master alloy blocks.

[0050] The method of using the nickel-phosphorus master alloy preparation device of the present embodiment is as follows: after red phosphorus and nickel are placed in the crucible 9, the furnace cover 11 and the second valve 24 are closed to form a closed space, the vacuum pump 2 is turned on to evacuate the closed space, and then the vacuum pump 2 is turned off, the gas flow controller 4 is turned on to release the argon gas in the gas cylinder 1, and the pressure monitor 12 is used to control the gas flow controller 4 during the argon release process, and the second valve 24 is opened after the internal pressure of the furnace body 10 exceeds the atmospheric pressure, so that the gas flow direction in the furnace body 10 is maintained from the gas pressure regulating mechanism to the exhaust gas collecting mechanism, and the gas flow is adjusted at the same time. The controller 4 makes the pressure of the furnace body 10 reach the required value; the induction heating coil 14 is turned on to heat the red phosphorus and nickel in the crucible 9 to form a melt. At the same time, part of the phosphorus vapor that escapes during the heating process flows along the argon flow to the third pipe 22 of the exhaust gas collection mechanism, and most of the phosphorus vapor is collected after passing through the filter 23. The phosphorus vapor that is not collected enters the water tank 19 filled with water along the three pipes 22 and settles to the bottom of the water tank 19; after the smelting is completed, the motor 15 is controlled to rotate the crucible 9 to pour the melt into the chute 7 and enter the mold 8, and after cooling, a plurality of nickel-phosphorus master alloy ingots are formed.

[0051] Example 4 A method for preparing a nickel-phosphorus master alloy using a nickel-phosphorus master alloy preparation device comprises the following steps: Step 1: Put red phosphorus and metallic nickel into the crucible 9 of the smelting component; Step 2: Use the vacuum pump 2 of the air pressure regulating mechanism to evacuate the smelting mechanism in turn, and turn on the gas flow controller 4 to release the inert gas in the gas cylinder 1 to adjust the air pressure; Step 3: Open the second valve 24 on the third pipeline 22 to control the gas flow direction, so that the inert gas flows from the gas pressure regulating mechanism to the exhaust gas collecting mechanism, and heat the red phosphorus and metal nickel placed in the smelting component in step 1, and control the gas flow controller 4 to control the pressure of the smelting mechanism as the heating is performed, so that the pressure in the smelting mechanism and the internal pressure of the crucible 9 are kept equal; Step 4: After the red phosphorus and metallic nickel in the crucible 9 are completely melted, they are poured into a casting component and cooled to obtain a nickel-phosphorus master alloy.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for preparing nickel-phosphorus master alloy under atmosphere protection, characterized in that: The invention comprises a gas pressure regulating mechanism, a smelting mechanism and a waste gas collecting mechanism which are connected in sequence, the gas pressure regulating mechanism comprising a gas cylinder (1) and a vacuum pump (2) which are connected to the smelting mechanism, the gas cylinder (1) containing gas for regulating the internal gas pressure of the smelting mechanism, the gas cylinder (1) being connected to the smelting mechanism via a first pipe (3), the first pipe (3) being provided with a gas flow controller (4), the smelting mechanism comprising a furnace body (10) and a smelting component and a casting component which are arranged inside the furnace body (10), the waste gas collecting mechanism comprising a water tank (19) and a third pipe (22) for connecting the water tank (19) and the furnace body (10), the third pipe (22) being provided with a second valve (24).

2. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: The vacuum pump (2) is connected to the smelting mechanism via a second pipeline (5), and a first valve (6) is provided on the second pipeline (5).

3. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: A furnace cover (11) is provided at the top of the furnace body (10), and a pressure monitor (12) and an observation window (13) are provided on the furnace cover (11).

4. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: The casting forming component comprises a chute (7) and a mold (8) connected to the chute (7), wherein the mold (8) has a plurality of ingot molds (21) and a channel (20) for connecting the ingot molds (21) and the chute (7), and a support column (25) is provided at the bottom end of the chute (7).

5. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 4, characterized in that: The ingot mold (21) has a length and a width of 50 mm to 200 mm, and a depth of 30 mm to 50 mm.

6. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: The smelting component comprises a crucible (9), an induction heating coil (14) is arranged on the crucible (9), a first protrusion (17) and a second protrusion (18) are respectively arranged on both sides of the outer wall of the crucible (9), the first protrusion (17) and the second protrusion (18) are both connected to a support frame (16), and the first protrusion (17) is fixedly connected to a motor (15); the two support frames (16) are both provided with through holes, and the first protrusion (17) and the second protrusion (18) are both gap-matched with the through holes of the support frames (16).

7. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 6, characterized in that: The motor (15) is placed outside the furnace body (10), and an output shaft of the motor (15) passes through a side wall of the furnace body (10) and is fixedly connected to the first protruding piece (17) via a coupling.

8. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: A filter screen (23) is provided at one end of the third pipe (22) away from the water tank (19).

9. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 8, characterized in that: The filter screen (23) is a foam ceramic filter screen.

10. The device for preparing nickel-phosphorus master alloy under atmosphere protection according to claim 1, characterized in that: The method for preparing a nickel-phosphorus master alloy using the device comprises the following steps: Step 1: Put red phosphorus and metallic nickel into the smelting part; Step 2: using a gas pressure regulating mechanism to sequentially evacuate and regulate the gas pressure of the smelting mechanism, wherein the gas pressure regulation is to fill the smelting mechanism with gas through a gas cylinder (1); Step 3: opening the third pipe (22) of the waste gas collection mechanism to regulate the gas flow direction, and heating the red phosphorus and metal nickel placed in the smelting component in step 1, and regulating the pressure of the smelting mechanism as the heating proceeds; Step 4: After the red phosphorus and metallic nickel are melted, pour them into the casting part, and obtain the nickel-phosphorus master alloy after cooling.

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