A vertical tank reduction furnace for magnesium metal with vibration discharge

Abstract

The present invention relates to the technical field of magnesium reduction furnace slag removal, specifically a vertical magnesium reduction furnace with vibration discharge. The furnace comprises a vibration assembly mechanism comprising an upper mechanism and a lower mechanism. The upper mechanism is connected to the top of the reduction tank, and the lower mechanism is connected to the bottom of the reduction tank. The upper and lower mechanisms move synchronously and vibrate at the same frequency. By providing the vibration assembly mechanism, vibration is used to promote slag removal, preventing slag from adhering to the inner wall, resulting in higher efficiency, no damage to the furnace body, and extended reduction furnace life.

Description

Technical Field

[0001] The present invention relates to the technical field of magnesium reduction furnace slag discharge, and in particular to a vertical pot reduction furnace for magnesium metal with vibration discharge. Background Art

[0002] The reduction furnace is the core equipment in the production of magnesium metal, used to reduce metal oxides into magnesium metal under high temperature conditions. Reduction furnaces are divided into horizontal tank reduction furnaces and vertical tank reduction furnaces according to the placement direction of the internal reduction tank. Traditional horizontal tank reduction furnaces have poor production continuity and low production capacity. In addition, the horizontal tank has a large span, and the tank body is prone to sinking, bending and deformation in high temperature environments, shortening the service life of the tank body. The vertical tank reduction furnace structurally places the reduction tank vertically inside the furnace, and the material addition and discharge are highly automated and continuous, effectively solving the above problems of the horizontal tank reduction furnace. Therefore, the vertical tank reduction furnace has now replaced the horizontal tank reduction furnace and become the mainstream equipment for the thermal smelting of magnesium metal.

[0003] In a vertical reduction furnace, a central tube is placed inside the reduction tank, with the bottom of the central tube covering the reduction tank discharge port. During production, pellets are added to the area between the reduction tank body and the central tube. After the injection is complete, the crystallizer and furnace cover are installed in sequence, allowing the pellets to be reduced at a temperature of 1200°C. After the reaction is complete, the furnace cover is opened, the crystallizer and the central tube are removed in sequence, and the slag flowing out of the reduction tank is collected at the bottom of the furnace. After the slag is discharged, the central tube and the material are reinserted, continuing the cycle.

[0004] At present, the slag discharge operation of the vertical pot reduction furnace relies solely on the natural slag discharge achieved by the slag's own gravity. However, under the high-temperature production environment, the slag easily adheres to the inner wall of the reduction pot. Therefore, relying solely on the natural slag discharge of the slag often leads to the problem of poor slag discharge, affecting production continuity. At this time, on-site workers need to use an overhead crane to lift the center tube to hit the reduction pot, providing disturbance to make the slag fall. However, the reduction pot is heavy, and the vertically placed reduction pot only contacts the furnace body at the top and bottom. The force-bearing area of ​​the furnace body is small, resulting in greater pressure. At this time, further impact can easily damage the furnace structure and shorten the life of the reduction furnace. Therefore, how to solve the problem of poor slag discharge is crucial to the production stability of the magnesium reduction furnace. Summary of the Invention

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a vertical tank reduction furnace for magnesium metal with vibration discharge. By setting a vibration combination mechanism, vibration is used to promote slag discharge, thereby preventing slag from adhering to the inner wall, which is more efficient, will not cause damage to the furnace body, and extends the life of the reduction furnace.

[0006] A vertical magnesium reduction furnace with vibration discharge comprises a vibration combination mechanism, wherein the vibration combination mechanism comprises an upper mechanism and a lower mechanism, wherein the upper mechanism is connected to the top of the reduction tank, and the lower mechanism is connected to the bottom of the reduction tank, and the upper mechanism and the lower mechanism move synchronously and vibrate at the same frequency.

[0007] By setting up a vibration combination mechanism, vibration is used to promote slag discharge and prevent slag from adhering to the inner wall. Compared with passive cleaning after poor slag discharge, active cleaning by vibration is more efficient and does not require impact discharge, so it will not cause damage to the furnace body and extend the life of the reduction furnace.

[0008] Furthermore, the upper mechanism is connected to a lifting device, which is used to lift the upper mechanism to drive the bottom of the reduction tank away from the bottom of the reduction furnace. The lower mechanism is provided with a supporting mechanism, which is fixedly installed on the ground.

[0009] The weight of a conventional reduction pot rests on the furnace bottom, which weakens at high temperatures and is easily damaged. By connecting the vibration assembly to the lifting and support mechanisms, the reduction pot avoids contact with the furnace during discharge. The lifting and support mechanisms bear the weight, protecting the furnace bottom and extending the life of the reduction furnace.

[0010] Furthermore, a furnace top vertical tank hole is provided at the connection between the reduction furnace top and the reduction tank, and the furnace top vertical tank hole is T-shaped with an upper diameter larger than a lower diameter;

[0011] A number of upper sealing support blocks are provided at the lower upper edge of the reduction tank corresponding to the vertical tank hole on the furnace top, and an upper sealing member is provided above the upper sealing support block. The upper sealing member is tightly sleeved on the outer wall of the reduction tank. When the reduction furnace is operating, the bottom of the upper sealing member is in close contact with the lower upper edge of the vertical tank hole on the furnace top.

[0012] The furnace top is sealed by setting an upper seal, and an upper seal support block is provided so that the upper seal is lifted synchronously with the reduction tank when the reduction tank is lifted, thereby avoiding the situation where lifting difficulties are caused by seal extrusion.

[0013] Furthermore, when the upper mechanism lifts the reduction tank, the bottom of the upper sealing member is lower than the top of the reduction furnace.

[0014] By limiting the positional relationship between the upper seal and the top of the reduction furnace, the upper seal has a certain flow-blocking effect on the flue gas flowing out of the gap. The high-temperature flue gas in the reduction furnace gathers at the top of the furnace. If the upper seal is completely opened, a large amount of flue gas will flow out directly, losing the flow-blocking effect, which is not conducive to heat preservation in the furnace.

[0015] Furthermore, the movement distance of the upper mechanism to lift the reduction tank is 2 / 3 of the height of the upper sealing member.

[0016] By specifically limiting the moving distance of the reduction tank, the upper sealing member has a better flow blocking effect.

[0017] Furthermore, a vertical tank hole is provided at the connection between the bottom of the reduction furnace and the reduction tank. The upper part of the vertical tank hole matches the inclined surface of the reduction tank. The lower part of the vertical tank hole is a key-shaped hole. A lower sealing member is provided inside the key-shaped hole.

[0018] The upper edge of the lower seal fits tightly against the bottom of the reduction furnace. The lower seal is split, comprising two semicircular rings divided along the diameter. When the lower seal is assembled, the inner surface fits tightly against the outer wall of the reduction tank, and when separated, the outer surface fits against the key-shaped hole.

[0019] The furnace bottom is sealed by setting a lower seal. When discharging slag, the split lower seal moves to both ends to avoid the situation where the seal is squeezed and the lifting is difficult. The furnace bottom space is small, the split structure is efficient, small in size and easy to implement.

[0020] Furthermore, the lower mechanism is installed in a split manner.

[0021] By arranging the lower mechanism as a split part, it is easy to install in a compact furnace bottom.

[0022] Furthermore, a cooling water jacket is provided at the bottom of the reduction tank, and the lower mechanism is connected to the outer wall of the cooling water jacket.

[0023] By connecting the lower mechanism to the cooling water jacket, the lower mechanism is kept at a suitable working temperature and proper strength is ensured.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a vertical magnesium reduction furnace with vibration discharge. By providing a vibration assembly, vibration is used to promote slag discharge and prevent slag from adhering to the inner wall. Compared to passive cleaning after poor slag discharge, active cleaning by vibration is more efficient and eliminates the need for impact discharge, thus preventing damage to the furnace body and extending the life of the reduction furnace. The vibration assembly is connected to a lifting device and a support mechanism, preventing the reduction tank from contacting the furnace body during discharge. The lifting device and support mechanism bear the weight, protecting the furnace bottom and extending the life of the reduction furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a vertical magnesium reduction furnace with vibration discharge according to the present invention;

[0027] Figure 2 for Figure 1 Schematic cross-section at AA;

[0028] Figure 3 for Figure 1Schematic cross-section at BB;

[0029] Figure 4 It is a schematic diagram of the cooperation between the upper sealing member and the upper sealing member support block of the present invention.

[0030] In the figure: 1. reduction furnace; 2. reduction tank; 3. upper mechanism; 4. vertical tank hole on furnace top; 5. upper sealing member; 6. upper sealing member support block; 7. lower mechanism; 8. lower sealing member; 9. vertical tank hole on furnace bottom. DETAILED DESCRIPTION

[0031] To better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] like Figures 1-4 As shown, a vertical tank reduction furnace for magnesium metal with vibration discharge comprises a vibration combination mechanism, wherein the vibration combination mechanism comprises an upper mechanism 3 and a lower mechanism 7, wherein the upper mechanism 3 is connected to the top of the reduction tank 2, and the lower mechanism 7 is connected to the bottom of the reduction tank 2, and the upper mechanism 3 and the lower mechanism 7 move synchronously and vibrate at the same frequency.

[0033] By setting up a vibration combination mechanism, vibration is used to promote slag discharge and prevent slag from adhering to the inner wall. Compared with passive cleaning after poor slag discharge, active cleaning by vibration is more efficient and does not require impact discharge, so it will not cause damage to the furnace body and extend the life of the reduction furnace 1.

[0034] Specifically, the upper mechanism 3 is connected to a lifting device, which is used to lift the upper mechanism 3 to drive the bottom of the reduction tank 2 away from the bottom of the reduction furnace 1. The lower mechanism 7 is provided with a supporting mechanism, which is fixedly installed on the ground.

[0035] The weight of a conventional reduction tank 2 rests on the furnace floor, which weakens at high temperatures and is easily damaged. By connecting the vibration assembly to the lifting and support mechanisms, the reduction tank 2 avoids contact with the furnace during discharge. The lifting and support mechanisms bear the weight, protecting the furnace floor and extending the life of the reduction furnace 1.

[0036] Specifically, a furnace top vertical tank hole 4 is provided at the connection between the top of the reduction furnace 1 and the reduction tank 2. The furnace top vertical tank hole 4 is T-shaped with an upper diameter larger than a lower diameter.

[0037] A plurality of upper sealing support blocks 6 are provided at the lower upper edge of the reduction tank 2 corresponding to the vertical tank hole 4 on the furnace top. An upper sealing member 5 is provided above the upper sealing support block 6. The upper sealing member 5 is tightly sleeved on the outer wall of the reduction tank 2. When the reduction furnace 1 is operating, the bottom of the upper sealing member 5 is in close contact with the lower upper edge of the vertical tank hole 4 on the furnace top.

[0038] The furnace top is sealed by arranging the upper seal 5 , and the upper seal support block 6 is provided so that the upper seal 5 is lifted synchronously with the reduction tank 2 when the reduction tank 2 is lifted, thereby avoiding the situation where lifting difficulty is caused by seal extrusion.

[0039] More specifically, the upper diameter of the furnace top vertical pot hole 4 is slightly larger than the diameter of the upper sealing member 5, and the lower diameter of the furnace top vertical pot hole 4 is slightly larger than the outer diameter of the reduction pot 2. The limited diameter relationship facilitates installation and fit.

[0040] Specifically, when the upper mechanism 3 lifts the reduction tank 2 , the bottom of the upper sealing member 5 is lower than the top of the reduction furnace 1 .

[0041] By limiting the positional relationship between the upper seal 5 and the top of the reduction furnace 1, the upper seal 5 has a certain flow-blocking effect on the flue gas flowing out of the gap. The high-temperature flue gas in the reduction furnace 1 gathers at the top of the furnace. If the upper seal 5 is completely opened, a large amount of flue gas will flow out directly, losing the flow-blocking effect, which is not conducive to heat preservation in the furnace.

[0042] Specifically, the moving distance of the upper mechanism 3 to lift the reduction tank 2 is 2 / 3 of the height of the upper sealing member 5 .

[0043] By specifically limiting the moving distance of the reduction tank 2 , the upper sealing member 5 has a better flow blocking effect.

[0044] Specifically, a vertical tank hole 9 is provided at the connection between the bottom of the reduction furnace 1 and the reduction tank 2. The upper portion of the vertical tank hole 9 matches the inclined surface of the reduction tank 2. The lower portion of the vertical tank hole 9 is a key-shaped hole, and a lower sealing member 8 is provided inside the key-shaped hole.

[0045] The upper edge of the lower seal 8 fits tightly against the bottom of the reduction furnace 1. The lower seal 8 is split, comprising two semicircular rings divided along the diameter. When the lower seal 8 is assembled, the inner surface fits tightly against the outer wall of the reduction tank 2, and when separated, the outer surface fits against the key-shaped hole.

[0046] The furnace bottom is sealed by setting a lower seal 8. When slag is discharged, the split lower seal 8 moves to both ends to avoid the situation where the sealing is squeezed and the lifting is difficult. The furnace bottom space is small, the split structure is efficient, small in size, and easy to implement.

[0047] Specifically, the lower mechanism 7 is installed in a split manner.

[0048] By arranging the lower mechanism 7 as a split body, it is easy to install it at a compact furnace bottom.

[0049] Specifically, a cooling water jacket is provided at the bottom of the reduction tank 2 , and the lower mechanism 7 is connected to the outer wall of the cooling water jacket.

[0050] By connecting the lower mechanism 7 to the cooling water jacket, the lower mechanism 7 is kept at a suitable working temperature and ensures appropriate strength. Below the cooling water jacket is the slag outlet of the reduction tank 2. The installation of the lower mechanism 7 here reduces the longitudinal device of the furnace bottom and saves furnace bottom space.

[0051] The internal structures of the upper mechanism 3 and the lower mechanism 7 are of conventional design. Those skilled in the art can select appropriate devices based on the functions required by the present invention, and a detailed description thereof will not be given here. Similarly, the moving assembly, lifting device, and supporting mechanism of the lower seal 8 are all implementable by those skilled in the art using existing technologies and are not shown in the figures.

[0052] The working process of the present invention:

[0053] After the reaction in the reduction furnace 1 is completed, the slag is discharged, the furnace cover is opened, the crystallizer and the central tube are taken out in sequence, and the lower sealing member 8 is separated;

[0054] The vibration combination mechanism lifts the reduction tank 2 to the slag discharge position, and determines the vibration frequency and amplitude of the vibration combination mechanism;

[0055] After the slag discharge trolley moves to the slag discharge port of reduction tank 2, the slag discharge port is opened and the vibration combination mechanism is started;

[0056] After the slag is discharged, the slag outlet is closed, the vibration assembly mechanism lowers the reduction tank 2 to the production station, the lower sealing member 8 is assembled, and then the central tube, material and crystallizer are arranged for cyclic operation.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vertical reduction furnace for magnesium metal with vibration discharge, characterized in that: The vibration combination mechanism comprises an upper mechanism (3) and a lower mechanism (7), wherein the upper mechanism (3) is connected to the top of the reduction tank (2), and the lower mechanism (7) is connected to the bottom of the reduction tank (2), and the upper mechanism (3) and the lower mechanism (7) move synchronously and vibrate at the same frequency; The upper mechanism (3) is connected to a lifting device, and the lifting device is used to lift the upper mechanism (3) to drive the bottom of the reduction tank (2) away from the bottom of the reduction furnace (1). The lower mechanism (7) is provided with a supporting mechanism, and the supporting mechanism is fixedly installed on the ground; A furnace top vertical tank hole (4) is provided at the connection between the top of the reduction furnace (1) and the reduction tank (2), and the furnace top vertical tank hole (4) is T-shaped with an upper diameter larger than a lower diameter; A plurality of upper sealing member support blocks (6) are provided at the lower upper edge of the reduction tank (2) corresponding to the furnace top vertical tank hole (4), and an upper sealing member (5) is provided above the upper sealing member support blocks (6). The upper sealing member (5) is tightly sleeved on the outer wall of the reduction tank (2). When the reduction furnace (1) is in operation, the bottom of the upper sealing member (5) is in close contact with the lower upper edge of the furnace top vertical tank hole (4); When the upper mechanism (3) lifts the reduction tank (2), the bottom of the upper sealing member (5) is lower than the top of the reduction furnace (1).

2. The magnesium vertical reduction furnace with vibration discharge according to claim 1, characterized in that: The moving distance of the upper mechanism (3) for lifting the reduction tank (2) is 2 / 3 of the height of the upper sealing member (5).

3. The magnesium vertical reduction furnace with vibration discharge according to claim 1, characterized in that: A furnace bottom vertical pot hole (9) is provided at the connection between the bottom of the reduction furnace (1) and the reduction pot (2), the upper portion of the furnace bottom vertical pot hole (9) matches the inclined surface of the reduction pot (2), the lower portion of the furnace bottom vertical pot hole (9) is a key-shaped hole, and a lower sealing member (8) is provided inside the key-shaped hole; The upper edge of the lower sealing member (8) is in close contact with the bottom of the reduction furnace (1). The lower sealing member (8) is a split type, comprising two semicircular rings divided along the diameter. When the lower sealing member (8) is assembled, the inner surface is in close contact with the outer wall of the reduction tank (2), and when it is separated, the outer surface is in contact with the key-shaped hole.

4. The magnesium vertical reduction furnace with vibration discharge according to claim 1, characterized in that: The lower mechanism (7) is installed in a split manner.

5. The magnesium vertical reduction furnace with vibration discharge according to claim 1, characterized in that: A cooling water jacket is provided at the bottom of the reduction tank (2), and the lower mechanism (7) is connected to the outer wall of the cooling water jacket.

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