A vertical magnesium smelting device

Abstract

This utility model relates to a vertical magnesium smelting device, applied in the field of magnesium smelting reduction technology. The device includes: a frame; a reaction vessel mounted on the frame, comprising a vertical upper pipe and an inclined lower pipe, the upper and lower pipes being connected, with a slag outlet at the bottom of the lower pipe; a magnesium crystallizer detachably mounted on and connected to the upper pipe; a feeding section including a funnel, a feed valve, and a discharge pipe, the funnel outlet connected to the discharge pipe inlet via the feed valve, the discharge pipe outlet connected to the side of the reaction vessel, and the discharge pipe being connected to the reaction vessel; a stop section movably mounted on the lower pipe, comprising a first state and a second state; in the first state, the stop section blocks the slag outlet; in the second state, the material in the reaction vessel slides out of the slag outlet due to its own gravity; and an electric heating section sleeved outside the reaction vessel. The solution provided by this utility model uses an upper-in, lower-out method to shorten the feeding and discharging time and improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of magnesium smelting and reduction technology, and in particular to a vertical magnesium smelting device. Background Technology

[0002] In magnesium smelting reduction technology, the Pidgeon process is commonly used for magnesium reduction. Magnesium reduction tanks are mostly horizontally arranged. Adding or removing feed pellets and slag from the tank is done manually or by machine. These auxiliary tasks of loading and unloading are time-consuming, resulting in low time utilization during the magnesium reduction process. Currently, after the feed pellets and slag are completely removed during the magnesium reduction process, feed pellets for the next reduction cycle are added manually or by machine. This is clearly labor-intensive, inconvenient, and cannot support continuous production, leading to low production efficiency. Furthermore, in each magnesium reduction cycle, the tank is often externally heated with natural gas, resulting in high energy consumption, low gas utilization, and environmental pollution. Utility Model Content

[0003] To solve or partially solve the problems existing in related technologies, this utility model provides a vertical magnesium smelting device that can shorten the feeding and discharging time in the reaction tank by utilizing the gravity of the material balls in the magnesium reduction process, simplifying the operation process and improving production efficiency.

[0004] This utility model provides a vertical magnesium smelting apparatus, comprising: Frame; A reaction vessel is mounted on the frame. The reaction vessel includes a vertical upper pipe and an inclined lower pipe. The upper pipe is connected to the lower pipe, and a slag outlet is provided at the bottom end of the lower pipe. A magnesium crystallizer, wherein the magnesium crystallizer is detachably mounted on the upper tube and communicates with the upper tube; The feeding section includes a funnel, a feed valve, and a discharge pipe. The outlet of the funnel is connected to the inlet of the discharge pipe through the feed valve. The outlet of the discharge pipe is connected to the side of the reaction vessel. The discharge pipe is connected to the reaction vessel, and the inlet of the discharge pipe is higher than the outlet of the discharge pipe. A stop portion, movably disposed on the lower pipe, includes a first state and a second state; when the stop portion is in the first state, it blocks the slag outlet; when the stop portion is in the second state, the material in the reaction vessel slides out of the slag outlet due to its own gravity; and... An electric heating element is fitted outside the reaction vessel.

[0005] In one alternative embodiment, the angle of inclination of the lower tube is less than 60°; or, the outlet of the feed tube is connected to the connection between the upper tube and the lower tube.

[0006] In one alternative embodiment, the magnesium crystallizer is horizontally positioned and distributed on the left and right sides of the reaction vessel along with the feeding section.

[0007] In an alternative embodiment, a vacuum pump and a pressure equalization valve are also included. The vacuum pump is mounted on the frame and connected to the reaction vessel, and the pressure equalization valve is located at the top of the upper tube.

[0008] In one optional embodiment, the stop portion includes an electric push rod, a connecting frame, and a plug. The connecting frame includes a first end, a second end, and a third end. The first end and the electric push rod are both hinged to the lower tube. The second end is hinged to the free end of the electric push rod. The third end is fixedly connected to the plug. Furthermore, when the stop is in the first state, the free end of the electric push rod extends to its farthest point, and the plug seals the slag outlet.

[0009] In one optional embodiment, the lower pipe portion near the slag outlet is arc-shaped, and the center of the arc is the same as the rotation center of the connecting frame; simultaneously, when the free end of the electric push rod extends to its farthest point, the plug is located in the arc-shaped pipe portion.

[0010] In one optional embodiment, the connecting frame includes a connecting rod, one end of which is the first end and the other end is the second end. The second end is further provided with a counterweight, and the hinge point at the second end is located between the counterweight and the first end.

[0011] In one alternative embodiment, the electric heating section includes a heating tube wound around the lower tube.

[0012] In an optional embodiment, the device further includes a heat insulation section, which is sleeved outside the heating tube, and the heat insulation coverage area of ​​the heat insulation section on the reaction vessel includes at least the lower tube.

[0013] In an alternative embodiment, a collection trough is further included, located below the slag outlet, for collecting material that slides down from the slag outlet.

[0014] The technical solution provided by this utility model can include the following beneficial effects: The technical solution of this utility model modifies the reaction vessel, dividing it into an upper pipe and a lower pipe. The upper pipe is vertical, and the lower pipe is inclined, with the bottom end of the lower pipe serving as the slag outlet. When the stop is in the first state, the feed valve is opened, and the material balls slide from the funnel through the feed valve to the feed pipe, then slide from the feed pipe into the reaction vessel, and finally slide down along the inclined lower pipe. The feed valve is then closed, and the reaction vessel is in a closed state. The material balls inside the reaction vessel are electrically heated, and magnesium vapor overflows upwards to the magnesium crystallizer. Afterwards, the magnesium crystallizer is removed from the upper pipe, and the stop is switched from the first state to the second state, allowing the material balls to slide out of the slag outlet under their own weight. This utility model adopts an upper-in, lower-out method, which allows the material balls to rely on their own weight to effectively shorten the feeding and discharging time in the reaction vessel, simplifying the operation process, reducing labor costs, and improving production efficiency. Furthermore, replacing gas heating with electric heating reduces environmental pollution.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0016] The above and other objects, features and advantages of the present invention will become more apparent from the description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components.

[0017] Figure 1 This is a schematic diagram of the structure of the vertical magnesium smelting device shown in the embodiment of the present invention when the stop section is in the first state; In the diagram: 1. Frame; 2. Reaction vessel; 21. Upper pipe; 22. Lower pipe; 23. Slag outlet; 3. Magnesium crystallizer; 4. Feeding section; 41. Funnel; 42. Feed valve; 43. Discharge pipe; 5. Stop section; 51. Electric push rod; 510. Free end of electric push rod; 52. Connecting frame; 521. Bent rod; 522. Connecting rod; 523. First end; 524. Second end; 525. Third end; 53. Plug; 54. Counterweight; 6. Electric heating section; 7. Insulation section; 71. Insulation shell; 72. Insulation material; 81. Vacuum pump; 82. Filter valve; 83. Pressure equalizing valve; 9. Collection tank. Detailed Implementation

[0018] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0019] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0022] See Figure 1 This utility model provides a vertical magnesium smelting device, including a frame 1, a reaction tank 2, a magnesium crystallizer 3, a feeding section 4, a stop section 5, and an electric heating section 6.

[0023] In some embodiments, the reaction vessel 2 is mounted on the frame 1. The reaction vessel 2 includes a vertical upper pipe 21 and an inclined lower pipe 22. The upper pipe 21 and the lower pipe 22 are connected, and the bottom end of the lower pipe 22 is provided with a slag outlet 23.

[0024] like Figure 1 As shown, the reaction vessel 2 can be divided into two sections: a vertically distributed upper pipe 21 and an inclined lower pipe 22. The connection between the upper pipe 21 and the lower pipe 22 is bent, with a rounded transition at the bend. A feed inlet can be provided at the bend, allowing the feed balls from the feeding section 4 to enter the reaction vessel 2 through the feed inlet and slide down the lower pipe 22 along the pipe wall until stopped. After the magnesium metal is reduced, the feed ball slag can slide out of the reaction vessel 2 from the slag outlet 23 at the bottom of the lower pipe 22. Furthermore, to avoid the feed balls colliding and breaking in the lower pipe 22, the inclination angle of the lower pipe 22 should not be too large. Preferably, the inclination angle of the lower pipe 22 should be below 60°. In at least one embodiment, the inclination angle of the lower pipe 22 can be 53°.

[0025] In the explanation, in the reduction of metallic magnesium, the pellets are the formed products of the mixture in the magnesium reduction reaction. Specifically, they refer to the spherical or lumpy materials formed by uniformly mixing calcined white metal, ferrosilicon powder, fluorite powder, etc., according to the ingredient ratio, and then pressing them into spherical or lumpy shapes using a roller briquetting machine. The pellet slag is the solid waste remaining after the magnesium reduction reaction.

[0026] In some embodiments, the magnesium crystallizer 3 is detachably mounted on and connected to the upper pipe 21. In this embodiment, one magnesium crystallizer 3 is installed on the same reaction vessel 2. After one magnesium crystallizer 3 collects condensed magnesium vapor, it is removed from the upper pipe 21 and replaced with another magnesium crystallizer 3 for the next magnesium vapor collection. To improve the efficiency of installing and removing the magnesium crystallizer 3, it can be horizontally arranged, specifically, it is horizontally installed near the top of the upper pipe 21. Furthermore, to reduce interference from facilities above the reaction vessel 2, the magnesium crystallizer 3 and the feeding section 4 can be positioned on the left and right sides of the reaction vessel 2. Specifically, the feeding section 4 can be located on the concave side of the reaction vessel 2, and the magnesium crystallizer 3 can be correspondingly located on the other side.

[0027] In some embodiments, the feeding unit 4 includes a funnel 41, a feed valve 42, and a discharge pipe 43. The outlet of the funnel 41 is connected to the inlet of the discharge pipe 43 through the feed valve 42. The outlet of the discharge pipe 43 is connected to the side of the reaction vessel 2, and the discharge pipe 43 is in communication with the reaction vessel 2. The inlet of the discharge pipe 43 is higher than the outlet of the discharge pipe 43. After the feed valve 42 is opened, the feed balls enter the discharge pipe 43 from the funnel 41. Different opening degrees of the feed valve 42 can correspond to different feed rates per unit time. According to the actual required amount of feed balls, controlling the opening degree and opening time of the feed valve 42 can realize the input of the required amount of feed balls into the reaction vessel 2 for magnesium reduction reaction. In addition, the feed valve 42 can be a sealing valve. When the feed valve 42 is kept closed, it can provide a sealed environment inside the reaction vessel 2. In order to ensure that the feed balls in the discharge pipe 43 can enter the reaction vessel 2 by their own gravity, the inlet of the discharge pipe 43 should be higher than the outlet.

[0028] Furthermore, the outlet of the feed pipe 43 is connected to the junction of the upper pipe 21 and the lower pipe 22. If the amount of feed balls in the reaction vessel 2 is too small, the magnesium production efficiency will be low. Therefore, the outlet of the feed pipe 43 should not be set too low; it can be located at the bend between the upper pipe 21 and the lower pipe 22.

[0029] In some embodiments, the stop 5 is movably disposed on the lower pipe 22, and the stop 5 includes a first state and a second state. When the stop 5 is in the first state, the stop 5 blocks the slag outlet 23. When the stop 5 is in the second state, the material in the reaction tank 2 slides out of the slag outlet 23 by its own gravity. It can be seen that when the stop 5 is in the first state, the stop 5 blocks the slag outlet 23, which can provide a closed environment for the reaction tank 2. When the stop 5 is in the second state, the stop 5 does not block the slag outlet 23, so the material in the lower pipe 22 can slide down out of the reaction tank 2 under its own weight. In this embodiment, after the stop 5 switches from the first state to the second state, the slag pellets in the lower pipe 22 are automatically discharged from the slag outlet 23, reducing manual labor and making the discharge operation simple and efficient.

[0030] Furthermore, the stop part 5 includes an electric push rod 51, a connecting frame 52, and a plug 53. The connecting frame 52 includes a first end 523, a second end 524, and a third end 525. The first end 523 and the electric push rod 51 are both hinged to the lower pipe 22. The second end 524 is hinged to the free end 510 of the electric push rod, and the third end 525 is fixed to the plug 53. When the stop part 5 is in the first state, the free end 510 of the electric push rod extends to its farthest end, and the plug 53 blocks the slag outlet 23.

[0031] In this embodiment, when the stop part 5 switches from the second state to the first state, the free end 510 of the electric push rod extends forward, driving the connecting frame 52 to rotate around the hinge point at the first end 523. The connecting frame 52 and the plug 53 are a whole, and the plug 53 also rotates naturally. When the free end 510 of the electric push rod extends to its farthest point, the plug 53 just blocks the slag outlet 23, thereby sealing the bottom end of the lower pipe 22. It should be noted that the first end 523 and the part of the electric push rod 51 that is hinged to the lower pipe 22 are both on the outer wall of the lower pipe 22, while the third end 525 and the plug 53 are at the bottom end of the lower pipe 22. Therefore, in order to satisfy the switching of the stop part 5 between the first state and the second state, the part between the first end 523 and the third end 525 should not be a straight rod. Specifically, it can be a bent rod 521, as shown in the figure.

[0032] Preferably, the lower pipe 22 near the slag outlet 23 is arc-shaped, and the center of the arc is the same as the rotation center of the connecting frame 52; at the same time, when the free end 510 of the electric push rod extends to its farthest point, the plug 53 is located in the arc-shaped pipe section.

[0033] In this embodiment, during the magnesium reduction process, the force exerted on the plug 53 by the internal material balls is relatively large, placing certain requirements on the thickness of the plug 53. To ensure sealing quality, the plug 53 can be designed to extend into the lower pipe 22 near the slag outlet 23. Considering the arc-shaped movement trajectory of the plug 53, this pipe section can be designed to be arc-shaped, specifically circular, with the center of this arc coinciding with the rotation center of the plug 53's movement trajectory. Thus, when the free end 510 of the electric push rod extends to its furthest point, the plug 53 is precisely positioned within the arc-shaped pipe section, completely blocking the lower pipe 22. Similarly, when the free end 510 of the electric push rod retracts to its closest point, the plug 53 moves away from the pipe section. Furthermore, the design of the pipe section must ensure that all the material balls and slag in the lower pipe 22 slide forward through the pipe under their own weight when the plug 53 is not present.

[0034] Furthermore, the connecting frame 52 includes a connecting rod 522, one end of which is a first end 523, and the other end is a second end 524. The second end 524 is also provided with a counterweight 54, and the hinge point at the second end 524 is located between the counterweight 54 and the first end 523. In this embodiment, the counterweight 54 is an object with a certain weight. When the stop part 5 is in the first state, the weight of the counterweight 54 can be decomposed into the clamping force on the plug 53, thereby improving the sealing ability of the plug 53 and ensuring the reliability of the seal of the plug 53.

[0035] In some embodiments, the electric heating element 6 is sleeved outside the reaction vessel 2. Further, the electric heating element 6 includes a heating tube wound around the lower tube 22. Using the electric heating element 6 to heat the reaction vessel 2 from the outside, instead of the gas or coal gas heating in the Pidgeon process, can improve temperature reliability and eliminate smoke pollution. The electric heating can be direct current heating or other forms of heating.

[0036] Preferably, it also includes a heat insulation section 7, which is sleeved outside the heating pipe, and the heat insulation coverage area of ​​the heat insulation section 7 on the reaction vessel 2 includes at least the lower pipe 22. When the reaction vessel 2 is heated, the pressure difference between the inside and outside is too large, which reduces the service life of the reaction vessel 2. The heat insulation section 7 outside the heating pipe can ensure that the heat generated by the heating pipe is mainly provided to the inner cavity of the reaction vessel 2, improving the utilization rate of thermal energy. It can also act as a buffer to prevent the reaction vessel 2 from being directly exposed to the air and alleviate the situation of excessive pressure difference between the inside and outside of the reaction vessel 2. The heat insulation section 7 can mainly consist of a heat insulation shell 71 and a heat insulation material 72. The heat insulation material 72 is filled in the heat insulation shell 71, and the heat insulation material 72 has the characteristics of high temperature resistance and low thermal conductivity, which is well known to those skilled in the art and will not be described in detail here.

[0037] Furthermore, it also includes a vacuum pump 81 and a pressure equalization valve 83. The vacuum pump 81 is mounted on the frame 1 and connected to the reaction vessel 2, while the pressure equalization valve 83 is located at the top of the upper pipe 21. Before heating the reaction vessel 2, it is necessary to evacuate it. A filter is installed between the vacuum pump 81 and the reaction vessel 2, and the filter is connected to the vacuum pump 81 and the reaction vessel 2 via a stainless steel pipe. Also, after the magnesium reduction reaction is complete, the reaction vessel 2 is under negative pressure. Therefore, the pressure equalization valve 83 at the top of the upper pipe 21 needs to be opened to eliminate the pressure difference between the inside and outside of the reaction vessel 2 and balance the gas pressure inside and outside the vessel.

[0038] Furthermore, it also includes a collection trough 9, which is located below the slag outlet 23 and is used to collect the material that slides down from the slag outlet 23.

[0039] In one production cycle of magnesium reduction, the magnesium crystallizer 3 is installed on the upper pipe 21, and the free end 510 of the electric push rod extends forward to its farthest point, just enough to insert the arc-shaped plug 53 into the arc-shaped slag outlet 23. The feed valve 42 is opened, and the material ball in the funnel 41 enters the feed pipe 43 under its own gravity through the feed valve 42. The material ball slides into the reaction tank 2 in the feed pipe 43. After the feeding is completed, the feed valve 42 is closed, and the vacuum pump 81 is used to evacuate the reaction tank 2. After a certain vacuum degree is reached in the tank, the spiral is wound on the reaction tank 2. The heating tube is energized to heat the reaction vessel 2. At high temperature, the pellets in the reaction vessel 2 undergo a reduction reaction, and the generated magnesium vapor overflows upward to the magnesium crystallizer 3, where it is deposited to form magnesium ingots. After the reduction reaction of metallic magnesium in the reaction vessel 2 is completed, the pressure equalization valve 83 is opened to eliminate the negative pressure in the vessel, and the electric push rod 51 is retracted to make the plug 53 disengage from the slag outlet 23. The pellet slag in the vessel falls from the slag outlet 23 into the collection tank 9 under its own gravity. At the same time, the magnesium crystallizer 3 is removed from the reaction vessel 2, thus completing a single production cycle.

[0040] After removing the magnesium crystallizer 3, a new magnesium crystallizer 3 can be installed on the reaction vessel 2 to prepare for the next production cycle.

[0041] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A vertical magnesium distillation apparatus, characterized by, include: Frame; A reaction vessel is mounted on the frame. The reaction vessel includes a vertical upper pipe and an inclined lower pipe. The upper pipe is connected to the lower pipe, and a slag outlet is provided at the bottom end of the lower pipe. A magnesium crystallizer, wherein the magnesium crystallizer is detachably mounted on the upper tube and communicates with the upper tube; The feeding section includes a funnel, a feed valve, and a discharge pipe. The outlet of the funnel is connected to the inlet of the discharge pipe through the feed valve. The outlet of the discharge pipe is connected to the side of the reaction vessel. The discharge pipe is connected to the reaction vessel, and the inlet of the discharge pipe is higher than the outlet of the discharge pipe. A stop portion, movably disposed on the lower pipe, includes a first state and a second state; when the stop portion is in the first state, it blocks the slag outlet; when the stop portion is in the second state, the material in the reaction vessel slides out of the slag outlet due to its own gravity; and... An electric heating element is fitted outside the reaction vessel.

2. The vertical magnesium distillation apparatus according to claim 1, characterized by The angle of inclination of the lower tube is less than 60°; or, the outlet of the feed tube is connected to the connection between the upper tube and the lower tube.

3. The vertical magnesium distillation apparatus of claim 1, wherein, The magnesium crystallizer is horizontally positioned and is located on the left and right sides of the reaction vessel, along with the feeding section.

4. The vertical magnesium distillation apparatus of claim 1, wherein, It also includes a vacuum pump and a pressure equalization valve. The vacuum pump is mounted on the frame and connected to the reaction vessel, and the pressure equalization valve is located at the top of the upper tube.

5. The vertical magnesium distillation apparatus of claim 1, wherein, The stop part includes an electric push rod, a connecting frame, and a plug. The connecting frame includes a first end, a second end, and a third end. The first end and the electric push rod are both hinged to the lower tube. The second end is hinged to the free end of the electric push rod. The third end is fixed to the plug. Furthermore, when the stop is in the first state, the free end of the electric push rod extends to its farthest point, and the plug seals the slag outlet.

6. The vertical magnesium distillation apparatus of claim 5, wherein, The lower pipe section near the slag outlet is arc-shaped, and the center of the arc is the same as the rotation center of the connecting frame; at the same time, when the free end of the electric push rod extends to its farthest point, the plug is located in the arc-shaped pipe section.

7. The vertical magnesium distillation apparatus of claim 5, wherein, The connecting frame includes a connecting rod, one end of which is the first end and the other end is the second end. The second end is also provided with a counterweight, and the hinge point at the second end is located between the counterweight and the first end.

8. The vertical magnesium refining apparatus according to claim 1, characterized by The electric heating section includes a heating tube wound around the lower tube.

9. The vertical magnesium distillation apparatus of claim 8, wherein, It also includes a heat insulation section, which is sleeved outside the heating pipe, and the heat insulation coverage area of ​​the heat insulation section on the reaction vessel includes at least the lower pipe.

10. The vertical magnesium refining apparatus according to claim 1, characterized by It also includes a collection tank located below the slag outlet and used to collect material that slides down from the slag outlet.

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