A nonferrous metal purification furnace

Abstract

The present invention discloses a non-ferrous metal purification processing furnace, which belongs to the technical field of non-ferrous metal purification, and comprises a refining furnace body installed on a placement seat, a metal smelting furnace pool is arranged inside the refining furnace body, a smelting inner furnace body is arranged inside the refining furnace body, an electric heating device is arranged at the bottom of the smelting inner furnace body, a plurality of overflow ports are opened on the smelting inner furnace body, a sealing plug-in is arranged on the overflow port, and a refining heating ring is connected to the top of the refining furnace through a lifting and adjusting device. The present invention concentrates the metal in the smelting inner furnace body for heating by arranging the smelting inner furnace body, the metal smelting furnace pool and the refining furnace body, and in the state of molten metal, the molten metal located in the upper layer is centrally heated by the refining heating ring, and the impurity metal is vaporized in stages, so as to achieve the effect of simultaneous refining and purification of multiple metals, which is beneficial to control the heating temperature, and can also significantly increase the vaporization time of the impurity metal, so as to achieve energy improvement, cost reduction and efficiency improvement.

Description

Technical Field

[0001] The invention relates to the technical field of nonferrous metal purification, in particular to a purification and processing furnace for nonferrous metals. Background Art

[0002] Nonferrous metals are generally divided into five categories according to their properties, uses, production and reserves in the earth's crust: nonferrous light metals, nonferrous heavy metals, precious metals, rare metals and semi-metals.

[0003] In the process of quenching and purifying metals, the different boiling points of two different metals in a vacuum are often used to separate the metals. For example, when separating zinc and copper metals, the boiling point of zinc is about 900 degrees, while the boiling point of copper is about 2560 degrees. At this time, the temperature value can be controlled to be much higher than the boiling point of zinc to achieve the effect of rapid vaporization and separation of zinc. However, when separating copper and aluminum metals, the boiling point of aluminum is about 2320 degrees, while the boiling point of copper is about 2560 degrees. The difference between the boiling points of the two is small. At this time, the temperature control requirements are high, and the fluidity of the molten metal is weak, which makes the separation time longer and consumes more energy. Furthermore, the metal after vaporization separation needs to be collected again by a cooling device, but impurities with lower boiling points in some alloys are often vaporized during the heating process, which makes the metal after cooling and collection contain other impurities, affecting the later metal purification treatment. Based on this, a purification and processing furnace for non-ferrous metals is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the metal after vaporization and separation in the prior art needs to be collected again by a cooling device, but the impurities with lower boiling points in some alloys are often vaporized during the heating process, which makes the metal after cooling and collection contain other impurities, affecting the subsequent metal purification treatment. A purification and processing furnace for non-ferrous metals is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A nonferrous metal purification and processing furnace comprises a refining furnace body mounted on a placement seat, the refining furnace body is connected to two sets of gaseous material cooling devices, a metal smelting furnace pool is arranged inside the refining furnace body, a smelting inner furnace body is arranged inside the refining furnace body, an electric heating device is arranged at the bottom of the smelting inner furnace body, a plurality of overflow ports are opened on the smelting inner furnace body, a sealing plug-in is arranged on the overflow port, a refining heating ring is connected to the top of the refining furnace through a lifting and adjusting device, the refining heating ring is connected to the sealing plug-in by rotating a controllable part, and is used to control the opening of the overflow port;

[0007] A decontamination gas pipe is arranged at the center position of the top of the refining furnace body, and the decontamination gas pipe is connected to a gas collecting hood adapted to the smelting furnace body, and an air flow blocking member is arranged in the gas collecting hood. An annular gas hood is arranged on the top of the refining furnace body, and a metal purification gas pipe is arranged on the annular gas hood.

[0008] Preferably, a sealing slot is provided on the inner wall of the overflow port, a sealing rib matched with the sealing slot is provided on the side wall of the sealing plug-in, and a force-bearing removal plate is fixedly provided on the side wall of the sealing plug-in.

[0009] Preferably, the lifting and adjusting device comprises two sets of lifting hydraulic cylinders arranged on the refining furnace body, the side wall of the refining heating ring is fixedly connected with a lifting bearing seat, and the output end of the lifting hydraulic cylinder penetrates into the refining furnace body and is fixedly connected to the lifting bearing seat.

[0010] Preferably, the rotatable controllable device comprises a rotatable lifting gear ring rotatably arranged on the refining heating ring, a lifting pad is arranged on the inner side wall of the rotatable lifting gear ring, and an arc-shaped pressing member for squeezing the force-bearing removal plate is arranged on the lifting pad.

[0011] Preferably, an adjusting motor is provided on the top of the refining furnace body, and a vertical meshing gear cylinder is fixedly connected to the output end of the adjusting motor, and the vertical meshing gear cylinder is meshingly connected with a rotating lifting gear ring.

[0012] Preferably, a gas collection control hydraulic cylinder is provided on the top of the refining furnace body, and the output end of the gas collection control hydraulic cylinder is connected to the gas collection cover through a bearing ring;

[0013] The airflow blocking member includes an outer sealing ring fixedly arranged at the bottom of the gas collecting hood, an inner sealing disk matched with the outer sealing ring is arranged inside the gas collecting hood, and the inner sealing disk is connected to the top side wall of the refining furnace body through a connecting column penetrating the gas collecting hood.

[0014] Preferably, an electromagnetic induction heating coil is arranged inside the refining heating ring, and the refining heating ring is sleeved on the smelting inner furnace body.

[0015] Preferably, a furnace opening is opened on one side of the refining furnace body, and a sealed furnace door is connected to the side wall of the furnace opening via a hinge.

[0016] Preferably, the two sets of the gaseous substance cooling devices are respectively connected to the impurity removal gas pipe and the metal purification gas pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention arranges a smelting inner furnace body, a metal smelting furnace pool and a refining furnace body to concentrate the metal in the smelting inner furnace body for heating, and in the molten metal state, the molten metal in the upper layer is centrally heated by a refining heating ring, and the impurity metal is vaporized in stages, which is beneficial to control the heating temperature and can also significantly improve the vaporization time of the impurity metal.

[0019] 2. The present invention uses a refining heating ring to accurately control the refining temperature, so as to achieve the effect of concentrated vaporization of impurity metals layer by layer, and concentrated and efficient removal of most of the impurity metals. The metal molten metal after concentrated vaporization is subsequently heated by a metal smelting furnace pool to vaporize the remaining impurity metals, thereby achieving rapid and effective purification and refining of non-ferrous metals, significantly improving efficiency while greatly reducing the electric energy required for refining non-ferrous metals, achieving the effect of increasing energy, reducing costs and increasing efficiency.

[0020] 3. The present invention cleverly designs a movable gas collecting hood, which absorbs the waste gas and some vaporized metal impurities generated during the heating process, and then transports the mainly removed vaporized metal through the annular gas hood, thereby ensuring that the purity of the removed metal itself meets the purification requirements, achieving the effect of simultaneous refining and purification of multiple metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a nonferrous metal purification and processing furnace proposed by the present invention;

[0022] Figure 2 This is an exploded view of the structure inside the refining furnace body in a nonferrous metal purification and processing furnace proposed by the present invention;

[0023] Figure 3 This is a schematic cross-sectional structure diagram of a nonferrous metal purification furnace proposed by the present invention;

[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of a metal smelting furnace pool and a smelting inner furnace body in a nonferrous metal purification and processing furnace proposed by the present invention;

[0026] Figure 6 The present invention is a schematic structural diagram of an airflow blocking member in an air collecting hood of a nonferrous metal purification and processing furnace.

[0027] In the figure: 1. placement seat; 2. refining furnace body; 3. metal smelting furnace pool; 4. smelting inner furnace body; 5. electric heating device; 6. overflow port; 7. sealing plug-in; 8. refining heating ring; 9. impurity removal gas pipe; 10. gas collecting hood; 11. annular gas hood; 12. metal purification gas pipe; 13. sealing rib; 14. force extraction plate; 15. lifting hydraulic cylinder; 16. lifting bearing seat; 17. rotating lifting gear ring; 18. arc-shaped pressure piece; 19. adjustment motor; 20. vertical meshing gear cylinder; 21. gas collection control hydraulic cylinder; 22. bearing ring; 23. outer sealing ring; 24. inner sealing disk; 25. connecting column; 26. sealing furnace door. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example, see Figures 1 to 6 A non-ferrous metal purification and processing furnace comprises a refining furnace body 2 mounted on a placement seat 1, a furnace opening is provided on one side of the refining furnace body 2, and a sealed furnace door 26 is connected to the side wall of the furnace opening by a hinge. The furnace opening is provided to facilitate the removal of a metal smelting furnace pool 3 from the refining furnace body 2, thereby facilitating subsequent molten liquid collection and feeding processing.

[0032] The refining furnace body 2 is externally connected to two sets of gaseous material cooling devices. An annular gas hood 11 is arranged on the top of the refining furnace body 2. A metal purification gas pipe 12 is arranged on the annular gas hood 11. The two sets of gaseous material cooling devices are respectively connected to the impurity removal gas pipe 9 and the metal purification gas pipe 12.

[0033] It should be noted that the vapor substance cooling device is a cooling system, which is a commonly used device in industrial production. In this scheme, it plays the role of absorbing and cooling different substances at different vaporization temperatures. It is a prior art and will not be described in detail here and is not shown in the figure.

[0034] A metal smelting furnace pool 3 is arranged inside the refining furnace body 2, a smelting inner furnace body 4 is arranged inside the refining furnace body 2, and an electric heating device 5 is arranged at the bottom of the smelting inner furnace body 4. The electric heating device 5 is a prior art and is used to smelt the metal below. The heat of the electric heating device 5 can act on the metal smelting furnace pool 3 through the smelting inner furnace body 4, thereby realizing continuous heating of the metal in the metal smelting furnace pool 3 and ensuring the state of the molten metal.

[0035] A plurality of overflow ports 6 are provided on the smelting inner furnace body 4, and a sealing plug-in 7 is provided on the overflow port 6. Furthermore, a sealing slot is provided on the inner wall of the overflow port 6, and a sealing rib 13 adapted to the sealing slot is provided on the side wall of the sealing plug-in 7, and a force-bearing removal plate 14 is fixedly provided on the side wall of the sealing plug-in 7.

[0036] It should be noted that the depth of the overflow port 6 arranged thereon decreases successively, and the sealing plug-in 7 arranged therewith is adapted successively to the different depths of the overflow port 6. The sealing plug-in 7 is located in the overflow port 6, and can realize the closure of the overflow port 6. When it is opened, it can realize the layer-by-layer outflow of the molten metal, realize the concentrated heating of the molten metal layer by layer, accelerate the vaporization of the internal metal, and significantly improve the purification efficiency.

[0037] A refining heating ring 8 is connected above the refining furnace body 2 through a lifting and adjusting device, an electromagnetic induction heating coil is arranged inside the refining heating ring 8, and the refining heating ring 8 is sleeved on the smelting inner furnace body 4;

[0038] The inner furnace body 4 of the smelting furnace can be electromagnetically inductively heated by the electromagnetic induction heating coil arranged in the refining heating ring 8, so that the molten metal located at the upper part can be centrally heated by the refining heating ring 8, which is beneficial to the temperature control and the rapid and effective vaporization of the impurity metal, so as to achieve the purpose of refining and purifying the metal, and a part of the molten metal that can be acted upon by electromagnetic induction can directly receive energy and quickly heat up.

[0039] Furthermore, the lifting and adjusting device includes two groups of lifting hydraulic cylinders 15 arranged on the refining furnace body 2, and the side wall of the refining heating ring 8 is fixedly connected with a lifting bearing seat 16. The output end of the lifting hydraulic cylinder 15 penetrates into the refining furnace body 2 and is fixedly connected to the lifting bearing seat 16.

[0040] The height of the refining heating ring 8 can be adjusted by the lifting hydraulic cylinder 15 arranged on the refining furnace body 2, so that the metal melt can be heated layer by layer.

[0041] The refining heating ring 8 is connected to the sealing plug 7 by rotating the controllable part, and is used to control the opening of the overflow port 6;

[0042] Furthermore, the rotatable controllable component includes a rotatable lifting gear ring 17 rotatably arranged on the refining heating ring 8 , a lifting pad is arranged on the inner side wall of the rotatable lifting gear ring 17 , and an arc-shaped pressing member 18 for pressing the force-bearing removal plate 14 is arranged on the lifting pad.

[0043] It is worth noting that in the process of rotating the lifting gear ring 17, the arc-shaped pressure piece 18 arranged thereon will be driven to rotate. When the arc-shaped pressure piece 18 rotates to the sealing plug-in 7, the arc-shaped pressure piece 18 will generate a force with the force-bearing removal plate 14, and gradually lift the force-bearing removal plate 14, so that the sealing plug-in 7 that seals the overflow port 6 is moved upward, thereby allowing the metal that has been concentratedly heated, purified and refined to flow downward into the metal smelting furnace pool 3.

[0044] An adjusting motor 19 is arranged on the top of the refining furnace body 2, and a vertical meshing gear cylinder 20 is fixedly connected to the output end of the adjusting motor 19, and the vertical meshing gear cylinder 20 is meshingly connected with the rotating lifting gear ring 17. Through the setting of the adjusting motor 19, the vertical meshing gear cylinder 20 can drive the rotating lifting gear ring 17 to rotate, thereby realizing the control of opening the overflow ports 6 one by one.

[0045] A degassing pipe 9 is provided at the center of the top of the refining furnace body 2, and the degassing pipe 9 is connected to a gas collecting hood 10 adapted to the smelting inner furnace body 4. One end of the degassing pipe 9 is a telescopic pipe structure, which can meet the up and down movement of the gas collecting hood 10. An airflow blocking member is provided in the gas collecting hood 10. Furthermore, a gas collecting control hydraulic cylinder 21 is provided on the top of the refining furnace body 2, and the output end of the gas collecting control hydraulic cylinder 21 is connected to the gas collecting hood 10 through a bearing ring 22;

[0046] The airflow blocking member includes an outer sealing ring 23 fixedly arranged on the bottom of the gas collecting hood 10, and an inner sealing disk 24 matched with the outer sealing ring 23 is arranged inside the gas collecting hood 10. The inner sealing disk 24 is connected to the top side wall of the refining furnace body 2 through a connecting column 25 that penetrates the gas collecting hood 10. When the gas collecting hood 10 is controlled to retract and reset to the upper side by the gas collecting control hydraulic cylinder 21, the inner sealing disk 24 and the outer sealing ring 23 are at the same height, which can achieve sealing of the gas collecting hood 10, thereby ensuring that subsequent gas can be absorbed and discharged through the annular gas hood 11.

[0047] It is worth noting that this scheme is aimed at removing low-boiling-point metals from high-boiling-point non-ferrous metals. The low-boiling-point metals are vaporized by high temperature to achieve the effect of purifying high-boiling-point metals.

[0048] When the present invention performs refining and purification processing on non-ferrous metals, the non-ferrous metals to be purified are placed in the smelting inner furnace body 4, the metal smelting furnace pool 3 and the smelting inner furnace body 4 are moved from the furnace mouth into the refining furnace body 2, and the electric heating device 5 in the smelting inner furnace body 4 is controlled to heat the non-ferrous metals. During the heating process, the gas collecting hood 10 is driven to move downward by the gas collecting control hydraulic cylinder 21 to seal the smelting inner furnace body 4. At this time, during the heating process, the waste gas and some vaporized metal impurities generated will be concentratedly absorbed and discharged to the outside through the impurity removal pipe 9 connected to the gas collecting hood 10;

[0049] When the metal is completely melted into molten metal, the gas collecting hood 10 is driven to reset upwards by the gas collecting control hydraulic cylinder 21, and the gas collecting hood 10 is closed under the action of the inner sealing disk 24; the lifting hydraulic cylinder 15 is controlled to drive the refining heating ring 8 originally located at the top to move downward, and the refining heating ring 8 moves down to the molten metal at the top layer. At this time, the electromagnetic induction heating coil in the refining heating ring 8 is powered to realize centralized heating of the molten metal located at the upper layer of the smelting furnace body 4. The refining heating ring 8 equipped with the electromagnetic induction heating coil can accurately control the heating temperature, vaporize the impurity metal in stages, and the vaporized impurity metal is transported outward through the annular gas hood 11;

[0050] After the centralized heating of the molten metal is completed, the vertical meshing gear cylinder 20 is driven to rotate by adjusting the motor 19. During the rotation process, the rotation of the rotating lifting gear ring 17 on the refining heating ring 8 is realized, so that the sealing plug 7 is moved upward through the arc-shaped pressing piece 18, and the overflow port 6 is opened to quickly discharge the centralized heated molten metal. The above actions are repeated to realize centralized heating of the molten metal layer by layer, which significantly reduces the refining and purification time of the metal;

[0051] The discharged molten metal is in the metal smelting furnace pool 3, and the electric heating device 5 arranged in the smelting furnace body 4 will continue to heat the molten metal and vaporize the residual impurity metal, so as to achieve the rapid and effective purification and refining of non-ferrous metals, significantly improve the efficiency, and greatly reduce the electric energy required for refining non-ferrous metals, so as to achieve the effect of improving energy, reducing costs and increasing efficiency.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A non-ferrous metal purification furnace, comprising a refining furnace body (2) mounted on a placement seat (1), wherein the refining furnace body (2) is externally connected to two sets of gaseous material cooling devices, characterized in that: A metal smelting furnace pool (3) is arranged inside the refining furnace body (2), a smelting inner furnace body (4) is arranged inside the refining furnace body (2), an electric heating device (5) is arranged at the bottom of the smelting inner furnace body (4), a plurality of overflow ports (6) are opened on the smelting inner furnace body (4), a sealing plug-in (7) is arranged on the overflow port (6), a refining heating ring (8) is connected to the top of the refining furnace through a lifting and adjusting device, and the refining heating ring (8) is connected to the sealing plug-in (7) through a rotating controllable part, so as to control the opening of the overflow port (6); A decontamination gas pipe (9) is arranged at the center of the top of the refining furnace body (2), and the decontamination gas pipe (9) is connected to a gas collecting hood (10) adapted to the smelting inner furnace body (4), and an air flow blocking member is arranged in the gas collecting hood (10). An annular gas hood (11) is arranged at the top of the refining furnace body (2), and a metal purification gas pipe (12) is arranged on the annular gas hood (11).

2. A non-ferrous metal purification furnace according to claim 1, characterized in that: The inner wall of the overflow port (6) is provided with a sealing slot, the side wall of the sealing plug-in (7) is provided with a sealing rib (13) adapted to the sealing slot, and the side wall of the sealing plug-in (7) is fixedly provided with a force-bearing removal plate (14).

3. The non-ferrous metal purification furnace according to claim 1, characterized in that: The lifting and adjusting device comprises two groups of lifting hydraulic cylinders (15) arranged on the refining furnace body (2); a lifting bearing seat (16) is fixedly connected to the side wall of the refining heating ring (8); an output end of the lifting hydraulic cylinder (15) penetrates into the refining furnace body (2) and is fixedly connected to the lifting bearing seat (16).

4. The nonferrous metal purification furnace according to claim 1, characterized in that: The rotatable control unit comprises a rotatable lifting tooth ring (17) rotatably arranged on the refining heating ring (8), the inner side wall of the rotatable lifting tooth ring (17) is provided with a lifting cushion seat, and the lifting cushion seat is provided with an arc-shaped pressing member (18) for pressing the force-removing plate (14).

5. The nonferrous metal purification furnace according to claim 1, characterized in that: An adjusting motor (19) is arranged on the top of the refining furnace body (2), and a vertical meshing gear cylinder (20) is fixedly connected to the output end of the adjusting motor (19), and the vertical meshing gear cylinder (20) is meshingly connected to the rotating lifting gear ring (17).

6. The nonferrous metal purification furnace according to claim 1, characterized in that: A gas collection control hydraulic cylinder (21) is provided on the top of the refining furnace body (2), and an output end of the gas collection control hydraulic cylinder (21) is connected to the gas collection cover (10) via a bearing ring (22); The airflow blocking member comprises an outer sealing ring (23) fixedly arranged at the bottom of the gas collecting hood (10); an inner sealing disk (24) matched with the outer sealing ring (23) is arranged inside the gas collecting hood (10); the inner sealing disk (24) is connected to the inner top side wall of the refining furnace body (2) via a connecting column (25) penetrating the gas collecting hood (10).

7. The nonferrous metal purification furnace according to claim 1, characterized in that: An electromagnetic induction heating coil is arranged inside the refining heating ring (8), and the refining heating ring (8) is sleeved on the smelting inner furnace body (4).

8. The nonferrous metal purification furnace according to claim 1, characterized in that: A furnace opening is provided on one side of the refining furnace body (2), and a sealed furnace door (26) is connected to the side wall of the furnace opening via a hinge.

9. The nonferrous metal purification furnace according to claim 1, characterized in that: The two sets of the vapor substance cooling devices are respectively connected to the impurity removal gas pipe (9) and the metal purification gas pipe (12).

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