A refined melting furnace for magnesium ingots

Abstract

The present invention relates to a refined melting furnace for metallic magnesium ingots, which comprises a melting furnace body. The melting furnace body includes an upper furnace body and a lower furnace body, and a furnace middle flange is arranged between the two. A top cover is arranged at the top of the upper furnace body, and an air door device is communicated with the top cover. An inlet, an outlet, a slag removal port, a detection device and a liquid pump device are sequentially arranged on the side surface of the upper furnace body. A flue, an observation port and a burner assembly are sequentially arranged on the side surface of the lower furnace body. The beneficial effects are as follows: The structure of the present invention is simple and compact. The air door plate is closed by a folding rod, effectively preventing impurities from entering the furnace. The crude magnesium is purified. The liquid level switch and the thermocouple sensor detect the liquid level change and the temperature change. During the melting process of the metallic magnesium ingot, the process control temperature is maintained, reducing the generation of metal residues caused by uneven heating of the metallic magnesium, effectively improving the working efficiency of the refining of the metallic magnesium ingot and prolonging the service life of the equipment.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of metal smelting, and particularly to a refined melting furnace for metal magnesium ingots. Background Art

[0002] In the metallurgical field, as a special metal material, magnesium metal is increasingly widely used. In order to obtain high-purity magnesium metal, it is necessary to heat and purify crude magnesium at high temperatures, such as the utility model patent with the application number CN200620200237.5. During the heating process of magnesium metal, the process control temperature needs to be reached. Uneven heating will result in a large amount of metal residues after the magnesium ingots melt, making it difficult to significantly improve the quality and efficiency of metal smelting. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a refined melting furnace for metal magnesium ingots that can detect changes in heating temperature and liquid level and can purify crude magnesium.

[0004] To solve the above problems, the present invention provides the following technical solution: A refined melting furnace for metal magnesium ingots, including a melting furnace body, the melting furnace body includes an upper furnace body and a lower furnace body, a furnace middle flange is provided between the two, a top cover is provided at the top of the upper furnace body, a damper device is connected and communicated on the top cover, a feeding port, a discharging port, a slag removal port, a detection device and a liquid pump device are sequentially arranged on the side of the upper furnace body, and a flue, an observation port, and a burner assembly are sequentially arranged on the side of the lower furnace body.

[0005] Further, the damper device includes a damper channel communicating with the top cover, a control component and a connecting rod component; the opening of the damper channel faces upward, the control component includes a damper plate and a folding rod, the damper plate is located inside the damper channel, a fixing member is provided on the damper plate, the folding rod passes through the damper channel horizontally, the fixing member fixes the damper plate on the folding rod, and bearing seats fixedly welded to both sides of the damper channel are provided at both ends of the folding rod; the connecting rod component includes a connecting rod and a damper wrench support welded to the top cover for supporting the connecting rod, one end of the connecting rod is flange-connected to the folding rod, the other end is connected to a turning rod, the turning rod is rotatably connected to a transfer plate, the transfer plate is rotatably connected to a damper wrench, and a sector-shaped frame fixed to the side of the upper furnace body is connected to the damper wrench. The folding rod controls the opening and closing of the damper plate, and the flue gas in the melting furnace is discharged through the damper channel. After the discharge, the damper plate closes to prevent impurities from entering.

[0006] Further, the discharging port extends upward into the upper furnace body to form a discharging chute.

[0007] Further, the slag removal port is a rectangular opening with a frame. The width of the slag removal port is W, and the radius of the upper furnace body is R, then W = R. The height of the slag removal port is H, then H = 2R. The setting of the slag removal port facilitates the slag removal tool to enter through the slag removal port to take out the waste slag.

[0008] Furthermore, the detection device includes a liquid level switch and a thermocouple welding rack. A thermocouple sensor is installed on the thermocouple welding rack, and the thermocouple sensor is installed inside the upper furnace body. The liquid level switch is used to detect the change in the liquid level of the liquid material, and the thermocouple sensor is used to detect the change in the temperature inside the furnace.

[0009] Furthermore, the flue is near the slag removal port. The flue is an "L"-shaped cylinder with an upward opening. A flue support fixed to the lower furnace body is welded to the bottom of the flue.

[0010] Furthermore, a plurality of furnace inner feet are arranged in an array at the upper end of the inner wall of the lower furnace body. A support plate is arranged on the furnace inner feet for supporting the melting pot. The melting pot is an inverted hollow frustum. A heat insulation layer is arranged in the gap between the melting pot and the lower furnace body. The outer surface of the melting pot is made of heat-resistant stainless steel, which can effectively extend the service life and prevent the deposition of metal scale at the bottom of the furnace.

[0011] Furthermore, the heat insulation layer is filled with aluminum silicate.

[0012] Furthermore, the cavity below the melting pot is the combustion chamber. The inner wall of the combustion chamber is lined with refractory bricks. A burner assembly is connected to the outside of the lower furnace body downward on one side of the combustion chamber. The burner assembly is used to burn the gas and air introduced into the combustion chamber to heat the melting pot, so as to achieve the effect of melting the magnesium ingot.

[0013] Furthermore, an embedded motor seat is arranged on the upper furnace body, and a liquid pump device is installed on the motor seat.

[0014] The beneficial effects of the present invention are as follows: The structure of the present invention is compact. The air door device can effectively discharge the soot in the furnace. The folding rod is used to close the air door plate, effectively preventing impurities from entering the furnace. The slag removal tool is used to take out the waste residue through the slag removal port, effectively purifying the crude magnesium. The liquid level switch and the thermocouple sensor detect the liquid level change and the temperature change, and by controlling the nozzle assembly, the process control temperature can be maintained during the melting process of the magnesium ingot, reducing the generation of metal residues due to uneven heating of the magnesium. The heat insulation layer can reduce the heat loss in the furnace, effectively improving the working efficiency of the refining of the magnesium ingot and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further details the specific embodiments of the present invention with reference to the drawings, wherein:

[0016] Figure 1 is a perspective view of an embodiment of the present invention;

[0017] Figure 2 is a perspective view of an embodiment of the present invention;

[0018] Figure 3 is a front view of an embodiment of the present invention;

[0019] Figure 4Top view of the embodiment of the present invention;

[0020] In the figure: 1, melting furnace body; 2, upper furnace body; 3, lower furnace body; 4, middle furnace flange; 5, top cover; 6, air door device; 7, feed inlet; 8, discharge outlet; 9, slag removal port; 10, detection device; 11, liquid pump device; 12, flue; 13, observation port; 14, burner assembly; 15, support plate; 16, melting pot; 60, air door channel; 61, control assembly; 62, connecting rod assembly; 101, liquid level switch; 102, thermocouple welding frame; 610, air door plate; 611, folding rod; 612, fixing piece; 613, bearing seat; 620, connecting rod; 621, air door wrench frame; 622, turning rod; 623, adapter plate; 624, air door wrench; 625, sector frame. Specific embodiments

[0021] Hereinafter, the present invention will be specifically described by way of exemplary embodiments. However, it should be understood that, in the absence of further description, the elements, structures, and features in one embodiment can also be beneficially combined into other embodiments.

[0022] Referring to the attached Figures 1-4 As shown, the present invention provides a refined melting furnace for magnesium ingots, including a melting furnace body 1. The melting furnace body 1 includes an upper furnace body 2 and a lower furnace body 3, and a middle furnace flange 4 is provided between the two to fixedly connect the upper furnace body 2 and the lower furnace body 3. A top cover 5 is provided at the top of the upper furnace body 2. The top cover 5 is an inverted cone. An air door device 6 is communicatively provided on the top cover 5. The air door device 6 includes an air door channel 60 communicating with the top cover 5, a control assembly 61, and a connecting rod assembly 62. The air door channel 60 opens upward. The control assembly 61 includes an air door plate 610 and a folding rod 611. The air door plate 610 is located inside the air door channel 60, near the outlet. A fixing piece 612 is provided on the air door plate 610. The folding rod 611 horizontally passes through the air door channel 60, and the fixing piece 612 fixes the air door plate 610 on the folding rod 611. Bearing seats 613 fixedly welded to both sides of the air door channel 60 are provided at both ends of the folding rod 611. The opening and closing of the air door channel 60 are controlled by the rotation of the folding rod 611. The connecting rod assembly 62 includes a connecting rod 620 and an air door wrench frame 621 welded to the top cover 5 for supporting the connecting rod 620. One end of the connecting rod 620 is flange-connected to the folding rod 611, and the other end is connected to a turning rod 622. The turning rod 622 is rotatably connected to an adapter plate 623. The adapter plate 623 is rotatably connected to an air door wrench 624. A sector frame 625 fixed to the side of the upper furnace body 2 is connected to the air door wrench 624.

[0023] On the side of the upper furnace body 2, there are successively a feed inlet 7, a discharge outlet 8, a slag removal opening 9, a detection device 10, and a liquid pump device 11. The discharge outlet 8 extends into the upper furnace body 2 to form a discharge chute. The slag removal opening 9 is a rectangular opening with a frame. The width of the slag removal opening 9 is W, and the radius of the upper furnace body 2 is R, then W = R. The height of the slag removal opening 9 is H, then H = 2R. The detection device 10 includes a liquid level switch 101 and a thermocouple welding rack 102. The liquid level switch 101 is used to monitor the liquid level change in the melting furnace. The thermocouple welding rack 102 is equipped with a thermocouple sensor, and the thermocouple sensor is installed inside the upper furnace body 2 to monitor the temperature change in the melting furnace. An embedded motor base is provided on the upper furnace body 2, and the motor base is installed with the liquid pump device 11.

[0024] On the side of the lower furnace body 3, there are successively a flue 12, an observation port 13, and a burner assembly 14. The flue 12 is arranged near the slag removal opening 9 on the side of the lower furnace body 3. The flue 12 is an "L"-shaped cylinder with an upward opening. The bottom of the flue 12 is welded with a flue 12 support fixed to the lower furnace body 3. A plurality of furnace inner feet are arranged in an array at the upper end of the inner wall of the lower furnace body 3, and a support plate 15 is provided on the furnace inner feet to support the melting pot 16. The melting pot 16 is an inverted hollow frustum. A heat insulation layer is provided in the gap between the melting pot 16 and the lower furnace body 3, and the heat insulation layer is filled with aluminosilicate. The cavity below the melting pot 16 is a combustion chamber, and refractory bricks are laid on the inner wall of the combustion chamber. One side of the combustion chamber communicates with the outside of the lower furnace body 3 to be provided with the burner assembly 14.

[0025] The usage process of the present invention is as follows:

[0026] Materials enter from the feed inlet 7 of the present invention. The burner assembly 14 heats the melting pot 16 to melt the materials entering the melting furnace. The liquid level switch 101 and the thermocouple sensor detect the liquid level and temperature changes in the furnace, and control the burner assembly 14 to maintain the process control temperature. The flue gas of the lower furnace body 3 is discharged from the flue 12. After the flue gas of the upper furnace body 2 is discharged from the damper device 6, the damper plate 610 immediately closes to prevent impurities from entering. The waste slag is taken out from the slag removal opening 9 using a slag removal tool. After the liquid material reaches a certain liquid level, the liquid material is transferred and utilized through the discharge outlet 8 by the siphon principle. This equipment has a long service life, a compact structure, and effectively improves the effect of purifying magnesium ingots.

[0027] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A refined melting furnace for magnesium ingots, characterized in that, it includes a melting furnace body (1), the melting furnace body (1) includes an upper furnace body (2) and a lower furnace body (3), a furnace middle flange (4) is arranged between the two, a top cover (5) is arranged at the top of the upper furnace body (2), an air door device (6) is connected and arranged on the top cover (5), a feeding port (7), a discharging port (8), a slag removal port (9), a detection device (10) and a liquid pump device (11) are sequentially arranged on the side of the upper furnace body (2), a flue (12), an observation port (13), and a burner assembly (14) are sequentially arranged on the side of the lower furnace body (3); the air door device (6) includes an air door channel (60) communicating with the top cover (5), a control assembly (61) and a connecting rod assembly (62); the air door channel (60) opens upward, the control assembly (61) includes an air door plate (610) and a folding rod (611), the air door plate (610) is located inside the air door channel (60), a fixing part (612) is arranged on the air door plate (610), the folding rod (611) passes through the air door channel (60) horizontally, and the fixing part (612) fixes the air door plate (610) on the folding rod (611), and bearing seats (613) fixedly welded to both sides of the air door channel (60) are arranged at both ends of the folding rod (611); the connecting rod assembly (62) includes a connecting rod (620) and an air door wrench support (621) welded to the top cover (5) for supporting the connecting rod (620), one end of the connecting rod (620) is flange-connected to the folding rod (611), the other end is connected with a turning rod (622), the turning rod (622) is rotatably connected with a transfer plate (623), the transfer plate (623) is rotatably connected with an air door wrench (624), and a sector-shaped frame (625) fixed to the side of the upper furnace body (2) is connected to the air door wrench (624); the flue (12) is near the slag removal port, the flue (12) is an "L"-shaped cylinder with an upward opening, and a flue (12) support fixedly installed on the lower furnace body (3) is welded to the bottom of the flue (12); a plurality of inner furnace feet are arranged in an array at the upper end of the inner wall of the lower furnace body (3), and a support plate (15) is arranged on the inner furnace feet for supporting a melting pot (16), the melting pot (16) is an inverted hollow frustum, and a heat preservation layer is arranged in the gap between the melting pot (16) and the lower furnace body (3); the cavity below the melting pot (16) is a combustion cavity, refractory bricks are laid on the inner wall of the combustion cavity, and the burner assembly (14) is communicated to the outside of the lower furnace body (3) on one side of the combustion cavity.

2. The refined melting furnace for magnesium ingots according to claim 1, characterized in that, a discharging groove extends into the upper furnace body (2) from the discharging port (8).

3. The refined melting furnace for magnesium ingots according to claim 1, characterized in that, The slag discharge opening (9) is a rectangular opening with a frame. The width of the slag discharge opening (9) is W, and the radius of the upper furnace body (2) is R, then W = R. The height of the slag discharge opening (9) is H, then H = 2R.

4. A refined melting furnace for magnesium ingots according to claim 1, characterized in that, the detection device (10) includes a liquid level switch (101) and a thermocouple welding rack (102). The thermocouple welding rack (102) is equipped with a thermocouple sensor, and the thermocouple sensor is installed inside the upper furnace body (2).

5. A refined melting furnace for magnesium ingots according to claim 1, characterized in that, the heat insulation layer is filled with aluminum silicate.

6. A refined melting furnace for magnesium ingots according to claim 1, characterized in that, an embedded motor seat is arranged on the upper furnace body (2), and the liquid pump device (11) is installed on the motor seat.

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