Impurity removal device for high-temperature alloy melt

Abstract

The utility model relates to the technical field of alloy smelting, in particular to a high-temperature alloy melt impurity removal device which comprises a melt container, the main body part of the melt container is cylindrical, and a spiral coil is arranged on the side wall of the melt container in the circumferential direction of the melt container; electrodes are respectively arranged at the upper part and the lower part of the melt container and can be in contact with the melt; an air inlet is formed in the middle lower part of the side wall of the melt container, and an air outlet is formed in the top of the melt container; the upper part of the melt container is provided with a liquid inlet and a pipeline thereof, and a first liquid outlet and a pipeline thereof, the lower part of the melt container is provided with a second liquid outlet and a pipeline thereof, and the pipeline of the first liquid outlet is provided with a filter. Electromagnetic and magnetic fields are applied to the molten liquid, so that the collision opportunity of impurity particles is increased, larger particles are formed, and floating of the particles is facilitated. Meanwhile, argon wind is applied to stir the melt, so that impurity particles float to the surface of the melt, and the removal effect of removing tiny impurity particles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy smelting, in particular to a device for removing impurities from high-temperature alloy melt. Background Art

[0002] At present, the traditional way to remove impurities from alloy melts is to use filtration, using a filter made of high-temperature resistant materials or a filter with a small pore structure. This filtration method is suitable for filtering inclusions with larger particles. In metal alloy melts, some impurities such as non-metals and metal oxides have fine particles. The effect of separating such impurities using traditional filter screens is not obvious, which affects the performance of magnesium alloys. Utility Model Content

[0003] The main purpose of the utility model is to provide a device for removing impurities from high-temperature alloy melt, so as to improve the effect of removing impurities from high-temperature alloy melt and enhance product quality.

[0004] According to one aspect of the utility model, a device for removing impurities from a high-temperature alloy melt is provided, comprising a melt container, wherein the main body of the melt container is cylindrical.

[0005] The side wall of the melt container is provided with a spiral coil along the circumference of the melt container;

[0006] The upper and lower parts of the melt container are respectively provided with electrodes, and the electrodes can contact the melt;

[0007] An air inlet is provided at the middle and lower part of the side wall of the melt container, and an air outlet is provided at the top;

[0008] The upper part of the melt container is provided with a liquid inlet and its pipeline, a first liquid outlet and its pipeline, and the lower part is provided with a second liquid outlet and its pipeline. The pipeline of the first liquid outlet is provided with a filter.

[0009] As a further improvement, the wall of the melt container includes an outer wall, an insulation layer, and an inner wall from the outside to the inside, and the spiral coil is arranged in the insulation layer.

[0010] As a further improvement, the outer wall is made of a metal shell having an electromagnetic shielding effect; the heat insulating layer is made of an inorganic heat insulating material; and the inner wall is made of refractory material cast or built by masonry.

[0011] As a further improvement, a support reinforcement is provided between the outer wall and the inner wall.

[0012] As a further improvement, the spiral coil is wound with a copper wire with a high temperature resistant insulation skin and is passed with alternating current.

[0013] As a further improvement, the upper electrode and the lower electrode are made of tungsten alloy electrodes and are powered by direct current.

[0014] As a further improvement, the jet airflow direction of the air inlet is at a set angle to the radial direction of the melt container, and is biased to the right along the airflow direction to improve the disturbance effect. The pipeline connected to the air inlet is provided with two one-way valves to keep the pipeline in contact with the gold melt at a high pressure.

[0015] As a further improvement, the pipelines of the liquid inlet, the first liquid outlet and the second liquid outlet are made of high temperature resistant non-metallic pipe openings and are all provided with valves.

[0016] A guide plate is arranged on the inner wall below the liquid inlet.

[0017] The application of the technical solution of the utility model has the following technical effects:

[0018] (1) The alloy melt impurity removal device provided by the utility model applies electromagnetic and magnetic fields to the melt, so that non-metallic particles and liquid metal produce relative migration movements, increase the collision opportunities of impurity particles, and form larger particles, which are conducive to their floating. At the same time, argon gas is applied to stir the melt, further making the impurity particles float to the surface of the melt, thereby improving the removal effect of removing tiny impurity particles.

[0019] (2) The direction of the jet airflow at the air inlet is at a certain angle to the radial direction of the melt container and is biased to the right along the airflow direction, so that the alloy melt is disturbed in a counterclockwise direction, thereby improving the disturbance effect and increasing the chance of impurity particles forming large particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A front view of a high-temperature alloy melt impurity removal device according to the utility model is shown;

[0022] Figure 2 Shows Figure 1 Middle AA section view;

[0023] Figure 3 The BB cross-sectional view is shown in the figure;

[0024] Figure 4 A schematic diagram of the three-dimensional structure of a high-temperature alloy melt impurity removal device is shown;

[0025] Figure 5 A three-dimensional schematic diagram after removing the outer wall is shown.

[0026] The above drawings include the following reference numerals:

[0027] 1. Melt container;

[0028] 11. Outer wall;

[0029] 12. Thermal insulation layer;

[0030] 13. Inner wall;

[0031] 2. Helical coil;

[0032] 31. Upper electrode;

[0033] 32. Lower electrode;

[0034] 41. Air inlet;

[0035] 42. Air outlet;

[0036] 50. Liquid inlet;

[0037] 51. The first liquid outlet;

[0038] 52. Second liquid outlet; DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] like Figure 1-5 As shown, the high-temperature alloy melt impurity removal device provided in this embodiment includes a melt container 1, and the main body of the melt container 1 is cylindrical.

[0041] The melt container 1 comprises an outer wall 11, an insulating layer 12 and an inner wall 13 from the outside to the inside. Inside the insulating layer 12, a spiral coil 2 is fixedly provided along the outer side of the side wall of the inner wall of the melt container and is provided along the circumference of the melt container. Alternating current is passed through the spiral coil 2.

[0042] An upper electrode 31 and a lower electrode 32 are respectively provided at the upper and lower parts of the inner wall 13 of the molten liquid container. The electrodes 31 and the lower electrodes 32 are in contact with the alloy melt when the device is operating normally.

[0043] An air inlet 41 is provided at the middle and lower part of the side wall of the melt container, and an air outlet 42 is provided at the top; the air inlet is connected to an air inlet pipeline with a valve, and the air inlet pipeline is filled with high-pressure argon gas.

[0044] The upper portion of the melt container is provided with a liquid inlet 50 and its pipeline, a first liquid outlet 51 and its pipeline, and the lower portion is provided with a second liquid outlet 52 and its pipeline. A filter 53 is provided in the pipeline of the first liquid outlet.

[0045] Working process:

[0046] The high-temperature alloy melt coming out of the smelting furnace enters the interior of the melt container 1 through the liquid inlet 50. Under the action of the magnetic field generated by the spiral coil 2 and the electric field generated by the electrode 31 and the lower electrode 32, the oxide particles, non-metallic particles and liquid metal in the high-temperature alloy melt undergo relative migration, increasing the collision chance of impurity particles to form larger particles, which is conducive to their floating. Under the action of the high-pressure gas flow, the high-temperature alloy melt is in a certain stirring state, and the floating process of bubbles is conducive to the floating of particles. The upper layer of the melt containing more impurities flows out through the first liquid outlet 51, is filtered and enters the next process. The lower melt enters the next process through the second liquid outlet 52.

[0047] Each part is further introduced below.

[0048] The outer wall 11 is made of a metal shell, which has an electromagnetic shielding effect. The heat insulation layer 12 is made of inorganic heat insulation materials, which can be heat-insulated and electrically insulating, such as rock wool, perlite, etc. The inner wall 13 is made of refractory materials, which can be cast with building materials or built with refractory bricks. It is necessary to leave holes to cooperate with the pipes and gas supply pipes for the inlet and outlet of the molten liquid. Since the strength of the heat insulation layer 12 is relatively low, a support reinforcement is provided between the outer wall 11 and the inner wall 13 to enhance the overall strength. The support reinforcement needs to avoid pipelines and spiral coils, which are not shown in the figure.

[0049] The spiral coil 2 can be made of copper wire with high temperature resistant insulation. The spiral coil 2 can be divided into several groups to facilitate arrangement in the insulation layer 12 and avoid pipelines.

[0050] The upper electrode 31 and the lower electrode 32 are made of high temperature resistant tungsten alloy electrodes, which are installed on the inner wall 13 and pass direct current to generate a constant electric field.

[0051] The jet flow direction of the air inlet 41 is at a certain angle to the radial direction of the molten metal container, and is biased to the right along the air flow direction, so that the alloy melt is disturbed in the counterclockwise direction. In order to prevent the alloy melt from flowing back, the pipeline directly connected to the air inlet 41 is L-shaped and is equipped with two one-way valves to maintain high pressure in the pipeline directly in contact with the alloy melt. The air outlet 42 at the top can be connected to the exhaust pipeline for cooling, purification and recycling.

[0052] The pipelines of the liquid inlet 50, the first liquid outlet 51, and the second liquid outlet 52 are connected to the inner wall 13 using high temperature resistant non-metallic pipe nozzles, and are all provided with valves. A guide plate can be provided on the inner wall below the liquid inlet 50 to reduce the scouring damage to the inner wall by the liquid flow. The filter material in the filter 53 connected to the first liquid outlet 51 can refer to the existing technology, such as CN214344880U-A magnesium alloy melt purification filter structure, CN101791504A-A metal magnesium melt or alloy melt filter material and filter, etc.

[0053] It can be seen that the warm alloy melt impurity removal device of this example applies electromagnetic and magnetic fields to the melt to make the non-metallic particles and the liquid metal migrate relative to each other, increase the collision chance of the impurity particles, and form larger particles, which is conducive to their floating. At the same time, argon gas is applied to stir the melt, further making the impurity particles float to the surface of the melt, thereby improving the removal effect of removing tiny impurity particles.

[0054] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-temperature alloy melt impurity removal device, comprising a melt container, the main body of the melt container is cylindrical, characterized in that: The side wall of the melt container is provided with a spiral coil along the circumference of the melt container; The upper and lower parts of the melt container are respectively provided with electrodes, and the electrodes can contact the melt; An air inlet is provided at the middle and lower part of the side wall of the melt container, and an air outlet is provided at the top; The upper part of the melt container is provided with a liquid inlet and its pipeline, a first liquid outlet and its pipeline, and the lower part is provided with a second liquid outlet and its pipeline. The pipeline of the first liquid outlet is provided with a filter.

2. The impurity removal device for high temperature alloy melt according to claim 1, characterized in that: The wall of the melt container includes an outer wall, a heat insulation layer, and an inner wall in sequence from the outside to the inside, and the spiral coil is arranged in the heat insulation layer.

3. The impurity removal device for high temperature alloy melt according to claim 2, characterized in that: The outer wall is made of a metal shell, which has an electromagnetic shielding effect; the heat insulation layer is made of inorganic heat insulation material; and the inner wall is made of refractory material cast or built.

4. The impurity removal device for high temperature alloy melt according to claim 3, characterized in that: A support reinforcement member is provided between the outer wall and the inner wall.

5. The impurity removal device for high temperature alloy melt according to claim 1, characterized in that: The spiral coil is made of copper wire with high temperature resistant insulation and is passed through alternating current.

6. The impurity removal device for high temperature alloy melt according to claim 1, characterized in that: The electrodes are tungsten alloy electrodes and are powered by direct current.

7. The impurity removal device for high temperature alloy melt according to claim 1, characterized in that: The jet airflow direction of the air inlet is at a set angle to the radial direction of the melt container and is biased to the right along the airflow direction. The pipeline connected to the air inlet is provided with two one-way valves.

8. The impurity removal device for high temperature alloy melt according to claim 1, characterized in that: The pipelines of the liquid inlet, the first liquid outlet and the second liquid outlet adopt high temperature resistant non-metallic pipe openings and are all provided with valves.

9. The impurity removal device for high temperature alloy melt according to claim 8, characterized in that: A guide plate is arranged on the inner wall below the liquid inlet.

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