External magnesium crystallizer

Abstract

An external magnesium crystallizer, relating to the field of collection device technology, includes a movable collection tank. A circumferential temperature-controlled jacket is fixed to the outer wall of the collection tank, and a bottom temperature-controlled cavity shell is fixed to the bottom of the collection tank. A heat exchange coil is wound inside the circumferential temperature-controlled jacket, which is filled with a circumferentially homogenized liquid. A circumferential mixing structure for stirring the circumferentially homogenized liquid is rotatably installed inside the circumferential temperature-controlled jacket, and a bottom mixing structure is rotatably installed inside the bottom temperature-controlled cavity shell. This invention overcomes the limitations of traditional magnesium crystallizers during transport, where maintaining the temperature during transport is crucial. Existing temperature control structures often prevent the uniformity of heat exchange between the temperature-controlled medium and the magnesium crystallizer, thus affecting the transport of the magnesium crystallizer.

Description

Technical Field

[0001] This utility model relates to the field of collection device technology, specifically to an external crystalline magnesium collector. Background Technology

[0002] Magnesium metal, due to its low density and high specific strength, exhibits significant advantages in lightweight applications and has extremely broad application prospects. Currently, factories commonly use the Pidgeon process, which involves calcining raw material (dolomite), preparing pellets, vacuum thermal reduction of the pellets, and refining crude magnesium to obtain industrial primary magnesium. Current factory refining methods employ flux refining, involving melting, stirring, settling, heat preservation, and casting to obtain industrial primary magnesium. However, the crystalline magnesium produced during the reduction process often has a loose structure. Furthermore, as is well known, magnesium metal is chemically reactive and has a strong affinity for oxygen, readily reacting with oxygen in a high-temperature molten state to form magnesium oxide. In industrial production, lowering the temperature of the magnesium salt solution reduces its solubility, causing crystals to precipitate.

[0003] A prior art patent, CN119433237A, discloses a method that first applies pressure to melt the magnesium material to be smelted, and then applies pressure to filter the molten product, completing a flux-free smelting process for magnesium. This invention, without using flux, achieves rapid melting of crystalline magnesium by applying pressure to break the surface oxide shell. Simultaneously, it utilizes the difference in fluidity between liquid magnesium and the solid oxide shell to separate the liquid magnesium and most of the oxide shell. Compared to conventional smelting processes without pressure, this method significantly increases the melting rate of crystalline magnesium and removes most oxide impurities, eliminating the series of pollution problems caused by flux use at the source, and achieving low-cost, high-efficiency, and high-quality crystalline magnesium smelting.

[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0005] First, existing magnesium crystallizers require temperature control during transport. However, the limitations of existing temperature control structures make it impossible to ensure uniform heat exchange between the temperature control medium and the magnesium crystallizer, which in turn affects the stability of the magnesium crystallizer during transport.

[0006] Secondly, during the collection and transfer of crystalline magnesium, the crystalline magnesium tends to adhere to the inner wall of the collector, which in turn affects the efficiency of crystalline magnesium discharge.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an external magnesium crystallizer to solve the problem that existing magnesium crystallizers in traditional technologies require temperature control during the transfer process. However, due to limitations of existing temperature control structures, the uniformity of heat exchange between the temperature control medium and the magnesium crystallizer cannot be guaranteed, which in turn affects the transfer of magnesium crystals.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An external magnesium crystallizer includes a movable collection tank. A circumferential temperature-controlled jacket is fixed to the outer wall of the collection tank, and a bottom temperature-controlled cavity shell is fixed to the bottom of the collection tank. A heat exchange coil is wound inside the circumferential temperature-controlled jacket, which is filled with a circumferentially homogenized liquid. A circumferential mixing structure for stirring the circumferentially homogenized liquid is rotatably provided inside the circumferential temperature-controlled jacket.

[0011] The bottom temperature control chamber is equipped with a bottom mixing structure that rotates within it.

[0012] As an optimized solution, the collection tank is equipped with a vertically rotating shaft inside, and two bottom scrapers are fixedly connected to the lower end of the shaft. The lower edge of the bottom scrapers is in frictional contact with the inner bottom surface of the collection tank.

[0013] As an optimized solution, the top of the collection tank is fixedly connected to a drive motor that is also fixedly connected to the upper end of the rotating shaft.

[0014] As an optimized solution, the outer end of the bottom scraper is vertically fixed with a side scraper that rubs against the inner wall of the collection tank.

[0015] As an optimized solution, the bottom scraper is arranged in an arc shape along the top view direction.

[0016] As an optimized solution, a discharge elbow valve communicating with its inner cavity is fixedly attached to the lower surface of the collection tank near the center, and the outlet end of the discharge elbow valve extends to the outside through the bottom temperature control chamber shell.

[0017] As an optimized solution, the top of the collection tank is fixedly connected to a feed valve and a vacuum extraction port that communicate with its internal cavity.

[0018] As an optimized solution, the bottom mixing structure includes mixing blades arranged in parallel and rotatably inside the bottom temperature control cavity. A bottom motor is fixedly connected to the lower end of the bottom temperature control cavity for each mixing blade, and the output shaft of the bottom motor is fixedly connected to the mixing blade.

[0019] As an optimized solution, several inverted frustum-shaped supports are arranged side by side inside the bottom temperature control chamber. The upper end of the supports is fixedly connected to the outer bottom surface of the collection tank, and the lower end of the supports is fixedly connected to the inner bottom surface of the bottom temperature control chamber.

[0020] As an optimized solution, the circumferential mixing structure includes an upper rotating ring and a lower rotating ring that are rotatably mounted side by side on the outer wall of the collection tank from top to bottom, and several vertically arranged mixing plates are directly arranged around the opposite ends of the upper rotating ring and the lower rotating ring.

[0021] As an optimized solution, a gear ring is fixedly connected to the outer ring of the lower rotating ring, and a motor is fixedly connected to the lower end of the circumferential temperature control jacket. The output shaft of the motor extends into the circumferential temperature control jacket and is fixedly connected to a gear, which meshes with the gear ring.

[0022] As an optimized solution, a circumferential heat exchange medium inlet valve and a circumferential heat exchange medium outlet valve are respectively fixed to both ends of the heat exchange coil, and the circumferential heat exchange medium inlet valve and the circumferential heat exchange medium outlet valve extend to the outside of the circumferential temperature control jacket.

[0023] As an optimized solution, a bottom heat exchange medium inlet valve and a bottom heat exchange medium outlet valve, which communicate with the inner cavity, are fixedly connected to the opposite end walls of the bottom temperature control cavity shell.

[0024] As an optimized solution, the bottom surface of the bottom temperature control chamber is fixed with casters in parallel.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] Crystalline magnesium is introduced into the collection tank via a feed valve. A vacuum extraction port allows for internal vacuuming. A circumferential heat exchange medium inlet valve and outlet valve introduce the heat exchange medium into the circumferential temperature control jacket for internal heat exchange. Simultaneously, a circumferential mixing structure agitates the internal circumferentially homogenized liquid, facilitating heat exchange with the heat exchange coils and achieving uniform temperature regulation of the collection tank's circumferential sidewalls. Similarly, a temperature control medium is introduced into the bottom temperature control chamber, where a bottom mixing structure agitates the medium, ensuring uniform heat exchange with the bottom surface of the collection tank and achieving uniform temperature regulation of the bottom. Closing the inlet and outlet valves facilitates the movement and transfer of the collection tank using casters.

[0027] The drive motor rotates the bottom scraper and side scraper to scrape off the crystalline magnesium adhering to the inner wall of the collection tank, making it easier to export the crystalline magnesium. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] In the diagram: 1-Collection tank, 2-Circumferential temperature control jacket, 3-Heat exchange coil, 4-Mixing plate, 5-Lower rotating ring; 6-Gear; 7-Circumferential heat exchange medium inlet valve; 8-Circumferential heat exchange medium outlet valve; 9-Bottom temperature control chamber shell; 10-Support body; 11-Mixing blade; 12-Bottom motor; 13-Discharge elbow valve; 14-Moving wheel; 15-Rotating shaft; 16-Bottom scraper; 17-Side scraper; 18-Feed valve; 19-Vacuum extraction port; 20-Drive motor. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0032] like Figure 1 As shown, the external magnesium crystallizer includes a movable collection tank 1. A circumferential temperature control jacket 2 is welded and fixed to the outer wall of the collection tank 1. A bottom temperature control chamber shell 9 is welded and fixed to the bottom of the collection tank 1. A heat exchange coil 3 is wound inside the circumferential temperature control jacket 2. The circumferential temperature control jacket 2 is filled with a circumferentially homogenized liquid. A circumferential mixing structure for stirring the circumferentially homogenized liquid is rotatably provided inside the circumferential temperature control jacket 2.

[0033] The bottom temperature control chamber 9 is equipped with a bottom mixing structure that rotates.

[0034] The collection tank 1 has a vertically rotating shaft 15 inside. The lower end of the shaft 15 is fixedly connected to two bottom scrapers, and the lower edge of the bottom scrapers is in frictional contact with the inner bottom surface of the collection tank 1.

[0035] The top of the collection tank 1 is fixedly connected to a drive motor 20 which is fixedly connected to the upper end of the rotating shaft 15.

[0036] A side scraper 17 is vertically fixed to the outer end of the bottom scraper and rubs against the inner wall of the collection tank 1.

[0037] The bottom scraper is arranged in an arc shape along the top view direction, so that the bottom scraper 16 can gather the crystalline magnesium towards the discharge elbow valve 13 for easy discharge.

[0038] A discharge elbow valve 13 is fixedly attached to the lower surface of the collection tank 1 near the center, which communicates with its inner cavity. The outlet end of the discharge elbow valve 13 extends to the outside through the bottom temperature control chamber shell 9, and the discharge elbow valve 13 extends to one side of the bottom of the collection tank 1.

[0039] The top of the collection tank 1 is fixedly connected to a feed valve 18 and a vacuum extraction port 19 that communicate with its inner cavity.

[0040] The bottom mixing structure includes mixing blades 11 arranged in parallel and rotating within the bottom temperature control chamber 9. A bottom motor 12 is fixedly connected to the lower end of the bottom temperature control chamber 9 for each mixing blade 11, and the output shaft of the bottom motor 12 is fixedly connected to the mixing blade 11.

[0041] Several support bodies 10 arranged in an inverted frustum shape are arranged side by side inside the bottom temperature control chamber 9. The upper end of the support body 10 is fixed to the outer bottom surface of the collection tank 1, and the lower end of the support body 10 is fixed to the inner bottom surface of the bottom temperature control chamber 9.

[0042] The circumferential mixing structure includes an upper rotating ring and a lower rotating ring 5 that are mounted side by side and rotate on the outer wall of the collection tank 1 from top to bottom. Several vertically arranged mixing plates 4 are directly arranged around the opposite ends of the upper rotating ring and the lower rotating ring 5.

[0043] A gear ring is fixed to the outer ring of the lower rotating ring 5, and a motor is fixed to the lower end of the circumferential temperature control jacket 2. The output shaft of the motor extends into the circumferential temperature control jacket 2 and is fixed to a gear 6, which meshes with the gear ring.

[0044] The heat exchange coil 3 is fixedly connected to a circumferential heat exchange medium inlet valve 7 and a circumferential heat exchange medium outlet valve 8 at both ends, and the circumferential heat exchange medium inlet valve 7 and the circumferential heat exchange medium outlet valve 8 extend to the outside of the circumferential temperature control jacket 2.

[0045] Bottom heat exchange medium inlet valve and bottom heat exchange medium outlet valve, which communicate with the inner cavity, are fixedly connected to the opposite end walls of the bottom temperature control cavity shell 9.

[0046] The bottom surface of the bottom temperature control chamber 9 is fixed with moving wheels 14 in parallel.

[0047] A sealing ring is provided between the motor, the bottom motor 12 shaft 15 and the rotating hole of the circumferential temperature control jacket 2 or the bottom temperature control cavity shell 9 to prevent leakage.

[0048] The working principle of this device is as follows:

[0049] Magnesium crystals are introduced into the collection tank 1 via the feed valve 18. A vacuum is created inside the tank via the vacuum extraction port 19. The heat exchange medium is introduced into the circumferential temperature control jacket 2 via the circumferential heat exchange medium inlet valve 7 and outlet valve 8 for internal heat exchange. Simultaneously, the circumferential mixing structure agitates the circumferentially homogeneous liquid inside, allowing it to exchange heat with the heat exchange coil 3, thus uniformly regulating the temperature of the circumferential sidewalls of the collection tank 1. Similarly, the temperature control medium is introduced into the bottom temperature control chamber 9, and the bottom mixing structure agitates the heat exchange medium, allowing it to uniformly exchange heat with the bottom surface of the collection tank 1, thus uniformly regulating the temperature of the bottom of the collection tank 1. After the inlet and outlet valves are closed, the collection tank 1 can be easily moved and transported using the casters 14.

[0050] The drive motor 20 rotates the bottom scraper and the side scraper 17 to scrape off the crystalline magnesium adhering to the inner wall of the collection tank 1, making it easier to export the crystalline magnesium.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An external magnesium crystallizer, characterized in that: The system includes a movable collection tank (1), a circumferential temperature control jacket (2) fixed to the outer wall of the collection tank (1), a bottom temperature control cavity shell (9) fixed to the bottom of the collection tank (1), a heat exchange coil (3) coiled inside the circumferential temperature control jacket (2), a circumferentially homogenized liquid filled inside the circumferential temperature control jacket (2), and a circumferential mixing structure for stirring the circumferentially homogenized liquid rotatably inside the circumferential temperature control jacket (2). The bottom temperature control chamber (9) is provided with a bottom mixing structure that rotates within it.

2. The external magnesium crystallizer according to claim 1, characterized in that: The collection tank (1) is vertically rotatable inside with a rotating shaft (15). The lower end of the rotating shaft (15) is fixedly connected to two bottom scrapers. The lower edge of the bottom scrapers is in frictional contact with the inner bottom surface of the collection tank (1).

3. The external magnesium crystallizer according to claim 2, characterized in that: The outer end of the bottom scraper is vertically fixed with a side scraper (17) that rubs against the inner wall of the collection tank (1).

4. The external magnesium crystallizer according to claim 3, characterized in that: The bottom scraper is arranged in an arc shape when viewed from above.

5. The external magnesium crystallizer according to claim 4, characterized in that: The collection tank (1) has a discharge elbow valve (13) fixedly attached to its lower surface near the center, which communicates with its inner cavity. The outlet end of the discharge elbow valve (13) extends to the outside through the bottom temperature control chamber shell (9).

6. The external magnesium crystallizer according to claim 5, characterized in that: The bottom mixing structure includes mixing blades (11) arranged in parallel and rotating inside the bottom temperature control cavity (9). A bottom motor (12) is fixedly connected to each mixing blade (11) at the lower end of the bottom temperature control cavity (9). The output shaft of the bottom motor (12) is fixedly connected to the mixing blade (11).

7. The external magnesium crystallizer according to claim 6, characterized in that: The bottom temperature control chamber (9) contains a number of supports (10) arranged in an inverted frustum shape. The upper end of the support (10) is fixed to the outer bottom surface of the collection tank (1), and the lower end of the support (10) is fixed to the inner bottom surface of the bottom temperature control chamber (9).

8. The external magnesium crystallizer according to claim 7, characterized in that: The circumferential mixing structure includes an upper rotating ring and a lower rotating ring (5) that are mounted side by side on the outer wall of the collection tank (1) from top to bottom. The opposite ends of the upper rotating ring and the lower rotating ring (5) are directly surrounded by a number of vertically arranged mixing plates (4).

9. The external magnesium crystallizer according to claim 8, characterized in that: The heat exchange coil (3) is fixed at both ends with a circumferential heat exchange medium inlet valve (7) and a circumferential heat exchange medium outlet valve (8), which extend to the outside of the circumferential temperature control jacket (2).

10. The external magnesium crystallizer according to claim 9, characterized in that: The bottom heat exchange medium inlet valve and the bottom heat exchange medium outlet valve, which communicate with the inner cavity, are fixedly connected to the opposite end wall of the bottom temperature control cavity shell (9).

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