Magnesium metal vertical tank reduction furnace capable of discharging from furnace through vibration

Abstract

The invention relates to the technical field of slag discharging of magnesium reduction furnaces, in particular to a vibration discharging magnesium metal vertical tank reduction furnace which comprises a vibration combination mechanism, the vibration combination mechanism comprises an upper mechanism and a lower mechanism, the upper mechanism is connected with the top of a reduction tank, and the lower mechanism is connected with the bottom of the reduction tank. The upper mechanism and the lower mechanism move synchronously and vibrate at the same frequency. The vibration combined mechanism is arranged, slag discharging is promoted in a vibration mode, slag is prevented from being attached to the inner wall, efficiency is higher, the furnace body cannot be damaged, and the service life of the reduction furnace is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of slag discharging of magnesium reduction furnaces, and particularly to a vertical shaft magnesium reduction furnace with vibrating tapping. Background Art

[0002] As the core equipment in the production of metallic magnesium, the reduction furnace is used to reduce metal oxides into metallic magnesium under high-temperature conditions. According to the placement direction of the internal reduction cans, the reduction furnace is divided into horizontal-shaft reduction furnaces and vertical-shaft reduction furnaces. The traditional horizontal-shaft reduction furnace has poor production continuity and low productivity. In addition, due to the large span of the horizontal shaft, the tank body is extremely prone to sinking, bending and deformation under high-temperature environment, shortening the service life of the tank body. In the vertical-shaft reduction furnace, the reduction cans are vertically placed inside the furnace chamber. The automation degree of material feeding and discharging is high, and the continuity is better, effectively solving the above problems of the horizontal-shaft reduction furnace. Therefore, the vertical-shaft reduction furnace has currently replaced the horizontal-shaft reduction furnace as the mainstream equipment for smelting metallic magnesium by the thermal method.

[0003] In the vertical-shaft reduction furnace, a central pipe is arranged inside the reduction can, and the bottom of the central pipe covers the discharge port of the reduction can. During production, the pellet material is added to the area between the reduction can body and the central pipe. After the feeding is completed, the crystallizer and the furnace cover are installed in sequence, so that the pellet material is reduced at a temperature of 1200°C. After the reaction is completed, the furnace cover is opened, the crystallizer and the central pipe are taken out in sequence, and at the same time, the slag material flowing out from the bottom of the reduction can is collected at the furnace bottom. After the slag material is discharged, the central pipe and the material are put in again for cyclic operation.

[0004] At present, the slag discharging operation of the vertical-shaft reduction furnace is natural slag discharging relying only on the gravity of the slag material itself. However, in the high-temperature environment of production, the slag material is easy to adhere to the inner wall of the reduction can. Therefore, the problem of unsmooth slag discharging often occurs in simple natural slag discharging of the slag material, affecting the production continuity. At this time, on-site workers need to use a crane to lift the central pipe to impact the reduction can to provide disturbance to make the slag material fall. However, the reduction can is heavy, and the vertically placed reduction can only contacts the furnace body at the top and bottom, and the stress area of the furnace body is small, so the pressure is greater. At this time, further impact is likely to cause damage to the furnace body structure and shorten the service life of the reduction furnace. Therefore, how to solve the problem of unsmooth slag discharging is crucial for the production stability of the magnesium reduction furnace. Summary of the Invention

[0005] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present invention provides a vertical shaft magnesium reduction furnace with vibrating tapping, which promotes slag discharging by vibration through setting a vibration combination mechanism, avoids slag material adhering to the inner wall, has higher efficiency, does not cause damage to the furnace body, and prolongs the service life of the reduction furnace.

[0006] A vertical magnesium reduction furnace with vibrating discharging, comprising a vibration combination mechanism, wherein the vibration combination mechanism includes an upper mechanism and a lower mechanism, the upper mechanism is connected to the top of the reduction tank, 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 the vibration combination mechanism and promoting slag discharge in a vibrating manner, slag adhesion on the inner wall is avoided. Compared with the passive cleaning after poor slag discharge, the active cleaning by vibration has higher efficiency, and there is no need to impact the discharging, so the furnace body will not be damaged, and the service life of the reduction furnace is prolonged.

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

[0009] The weight of a conventional reduction tank falls on the furnace bottom, and the strength of the furnace bottom decreases at high temperature and is easily damaged. By connecting the vibration combination mechanism with the lifting device and the support mechanism, the reduction tank is prevented from contacting the furnace body during discharging, and the weight is borne by the lifting device and the support mechanism to protect the furnace bottom and prolong the service life of the reduction furnace.

[0010] Further, a furnace top vertical tank hole is provided at the connection between the top of the reduction furnace and the reduction tank, and the furnace top vertical tank hole is a T shape with a larger upper diameter than the lower diameter; At the lower upper edge of the reduction tank corresponding to the furnace top vertical tank hole, a plurality of upper seal support blocks are provided, and an upper seal is provided above the upper seal support blocks. The upper seal is tightly sleeved on the outer wall of the reduction tank. During the operation of the reduction furnace, the bottom of the upper seal is in close contact with the lower upper edge of the furnace top vertical tank hole.

[0011] The sealing of the furnace top is achieved by setting the upper seal. By setting the upper seal support blocks, the upper seal is lifted synchronously with the reduction tank when the reduction tank is lifted, avoiding the situation of difficult lifting caused by seal extrusion.

[0012] Further, when the upper mechanism lifts the reduction tank, the bottom of the upper seal is lower than the top of the reduction furnace.

[0013] By restricting the positional relationship between the upper seal and the top of the reduction furnace, the upper seal has a certain blocking effect on the flue gas flowing out of the gap. High-temperature flue gas in the reduction furnace accumulates at the furnace top. If the upper seal is completely open, a large amount of flue gas will directly flow out, losing the blocking effect and being unfavorable for heat preservation in the furnace.

[0014] Further, the moving distance of the upper mechanism for lifting the reduction tank is 2 / 3 of the height of the upper seal.

[0015] By specifically limiting the moving distance of the reduction tank, the upper seal has a better flow-blocking effect.

[0016] Furthermore, a vertical tank hole at the bottom of the reduction furnace is provided at the connection with the reduction tank. The upper part of the vertical tank hole at the bottom of the furnace matches the inclined surface of the reduction tank. The lower part of the vertical tank hole at the bottom of the furnace is a key-shaped hole, and a lower seal is arranged inside the key-shaped hole; The upper edge of the lower seal fits closely with the bottom of the reduction furnace. The lower seal is of a split type and includes two semi-circular rings divided along the diameter. When the lower seals are combined, the inner surface fits closely with the outer wall of the reduction tank, and when separated, the outer surface fits with the key-shaped hole.

[0017] The sealing of the furnace bottom is achieved by setting the lower seal. When discharging slag, the split lower seal moves towards both ends, avoiding the situation of difficult lifting caused by sealing extrusion. The space at the bottom of the furnace is small, and the split structure has high efficiency, small volume, and is easy to implement.

[0018] Furthermore, the lower mechanism is installed in a split manner.

[0019] By setting the lower mechanism as a split type, it is easy to install at the compact bottom of the furnace.

[0020] 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.

[0021] By connecting the lower mechanism to the cooling water jacket, the lower mechanism is at a suitable working temperature, ensuring appropriate strength.

[0022] The beneficial effects of the present invention are as follows: A vertical tank reduction furnace for vibrating metal magnesium tapping according to the present invention promotes slag discharge by vibrating through setting a vibration combination mechanism, avoiding slag adhering to the inner wall. Compared with the passive cleaning after unsmooth slag discharge, the active cleaning by vibration has higher efficiency, and there is no need to impact the discharge, so the furnace body will not be damaged, and the service life of the reduction furnace is extended. The vibration combination mechanism is connected to the lifting device and the support mechanism, so that the reduction tank avoids contacting the furnace body during discharging, and the weight is borne by the lifting device and the support mechanism, protecting the furnace bottom and extending the service life of the reduction furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a vertical tank reduction furnace for vibrating metal magnesium tapping according to the present invention; Figure 2 is Figure 1 a schematic cross-sectional view at A-A; Figure 3 is Figure 1 a schematic cross-sectional view at B-B; Figure 4Schematic diagram of the cooperation between the upper seal and the upper seal support block of the present invention.

[0024] In the figure: 1, reduction furnace; 2, reduction tank; 3, upper mechanism; 4, vertical tank hole at the top of the furnace; 5, upper seal; 6, upper seal support block; 7, lower mechanism; 8, lower seal; 9, vertical tank hole at the bottom of the furnace. Detailed implementation manners

[0025] For better explaining the present invention for easy understanding, the present invention will be described in detail below in conjunction with the accompanying drawings through specific implementation manners. Although the 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 described herein. On the contrary, these embodiments are provided to enable a more clear and thorough understanding of the present invention and to be able to convey the scope of the present invention completely to those skilled in the art.

[0026] As Figures 1-4 shown, a vertical tank reduction furnace for vibrating out metal magnesium includes a vibration combination mechanism. The vibration combination mechanism includes an upper mechanism 3 and a lower mechanism 7. 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. The upper mechanism 3 and the lower mechanism 7 move synchronously and vibrate at the same frequency.

[0027] By setting the vibration combination mechanism and promoting slag discharge in a vibrating manner, it is possible to avoid slag adhering to the inner wall. Compared with the passive cleaning after poor slag discharge, the active cleaning by vibration has higher efficiency, and there is no need to impact the discharge, so the furnace body will not be damaged, and the service life of the reduction furnace 1 is extended.

[0028] Specifically, 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 support mechanism, and the support mechanism is fixedly installed on the ground.

[0029] The weight of the conventional reduction tank 2 falls on the furnace bottom, and the strength of the furnace bottom decreases at high temperatures and is easily damaged. By connecting the vibration combination mechanism to the lifting device and the support mechanism, the reduction tank 2 is avoided from contacting the furnace body during discharging, and the weight is borne by the lifting device and the support mechanism to protect the furnace bottom and extend the service life of the reduction furnace 1.

[0030] Specifically, a vertical tank hole 4 is provided at the connection between the top of the reduction furnace 1 and the reduction tank 2, and the vertical tank hole 4 is a T-shaped with a larger upper diameter than the lower diameter; A number of upper seal support blocks 6 are provided at the lower upper edge corresponding to the furnace top vertical tank hole 4 of the reduction tank 2. An upper seal 5 is provided above the upper seal support blocks 6. The upper seal 5 is tightly sleeved on the outer wall of the reduction tank 2. When the reduction furnace 1 operates, the bottom of the upper seal 5 is in close contact with the lower upper edge of the furnace top vertical tank hole 4.

[0031] The sealing of the furnace top is achieved by setting the upper seal 5. By setting the upper seal support blocks 6, when the reduction tank 2 is lifted, the upper seal 5 is lifted synchronously with the reduction tank 2, avoiding the situation of difficult lifting caused by sealing extrusion.

[0032] More specifically, the upper diameter of the furnace top vertical tank hole 4 is slightly larger than the diameter of the upper seal 5, and the lower diameter of the furnace top vertical tank hole 4 is slightly larger than the outer diameter of the reduction tank 2. The diameter relationship is restricted to facilitate installation and matching.

[0033] Specifically, when the upper mechanism 3 lifts the reduction tank 2, the bottom of the upper seal 5 is lower than the top of the reduction furnace 1.

[0034] By restricting the positional relationship between the upper seal 5 and the top of the reduction furnace 1, the upper seal 5 has a certain blocking effect on the flue gas flowing out of the gap. The high-temperature flue gas in the reduction furnace 1 accumulates at the furnace top. If the upper seal 5 is completely open, a large amount of flue gas will directly flow out, losing the blocking effect and being unfavorable for heat preservation in the furnace.

[0035] Specifically, the moving distance of the upper mechanism 3 lifting the reduction tank 2 is 2 / 3 of the height of the upper seal 5.

[0036] By specifically restricting the moving distance of the reduction tank 2, the upper seal 5 has a better blocking effect.

[0037] Specifically, a furnace bottom vertical tank hole 9 is provided at the connection between the bottom of the reduction furnace 1 and the reduction tank 2. The upper part of the furnace bottom vertical tank hole 9 matches the inclined surface of the reduction tank 2. The lower part of the furnace bottom vertical tank hole 9 is a key-shaped hole, and a lower seal 8 is arranged inside the key-shaped hole; The upper edge of the lower seal 8 is in close fit with the bottom of the reduction furnace 1. The lower seal 8 is a split type, including 2 semi-circular rings divided along the diameter. When the lower seal 8 is combined, the inner surface is in close fit with the outer wall of the reduction tank 2, and when separated, the outer surface is in fit with the key-shaped hole.

[0038] The sealing of the furnace bottom is achieved by setting the lower seal 8. When discharging slag, the split lower seal 8 moves towards both ends, avoiding the situation of difficult lifting caused by sealing extrusion. The space at the furnace bottom is small, and the split structure has high efficiency, small volume and is easy to implement.

[0039] Specifically, the lower mechanism 7 is installed in a split manner.

[0040] By setting the lower mechanism 7 as a split body, it is easy to install at the compact furnace bottom.

[0041] Specifically, a cooling water jacket is provided at the bottom of the reduction pot 2, and the lower mechanism 7 is connected to the outer wall of the cooling water jacket.

[0042] By connecting the lower mechanism 7 to the cooling water jacket, the lower mechanism 7 is at a suitable working temperature to ensure appropriate strength. Below the cooling water jacket is the slag discharge port of the reduction pot 2. Installing the lower mechanism 7 here reduces the longitudinal devices at the furnace bottom and saves the furnace bottom space.

[0043] The internal structures of the upper mechanism 3 and the lower mechanism 7 are both conventional designs. Those skilled in the art can select appropriate devices according to the functions required by the present invention, which will not be elaborated here. Similarly, the moving assembly, lifting device and support mechanism of the lower seal 8 can all be implemented by those skilled in the art through the prior art and are not shown in the figure.

[0044] The working process of the present invention: After the reaction in the reduction furnace 1 ends, slag discharge operation is carried out. Open the furnace cover, take out the crystallizer and lift out the central tube in sequence, and separate the lower seal 8; The vibration combination mechanism lifts the reduction pot 2 to the slag discharge station, and determines the vibration frequency and amplitude of the vibration combination mechanism; After the slag discharge trolley moves to the slag discharge port of the reduction pot 2, open the slag discharge port and start the vibration combination mechanism; After the slag discharge is completed, close the slag discharge port, the vibration combination mechanism lowers the reduction pot 2 to the production station, the lower seal 8 is combined, and then the central tube, materials and crystallizer are configured for cyclic operation.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A vertical retort furnace for magnesium reduction with vibration discharging, characterized in that, It includes a vibration combination mechanism, and the vibration combination mechanism includes an upper mechanism (3) and a lower mechanism (7). 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). The upper mechanism (3) and the lower mechanism (7) move synchronously and vibrate at the same frequency.

2. The magnesium metal shaft furnace reducer with vibration discharging as described in claim 1, characterized in that: 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 support mechanism, and the support mechanism is fixedly installed on the ground.

3. The magnesium metal shaft furnace reducer with vibration discharging as claimed in claim 2, wherein: There is a furnace top vertical tank hole (4) 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 a larger upper diameter than the lower diameter. At the lower upper edge of the reduction tank (2) corresponding to the furnace top vertical tank hole (4), there are several upper seal support blocks (6). Above the upper seal support blocks (6), there is an upper seal (5). The upper seal (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 seal (5) is in close contact with the lower upper edge of the furnace top vertical tank hole (4).

4. The magnesium metal shaft furnace reduction furnace with vibration discharging as claimed in claim 3, wherein: When the upper mechanism (3) lifts the reduction tank (2), the bottom of the upper seal (5) is lower than the top of the reduction furnace (1).

5. The magnesium metal shaft furnace reduction furnace with vibration discharging as claimed in claim 4, wherein: The moving distance of the upper mechanism (3) when lifting the reduction tank (2) is 2 / 3 of the height of the upper seal (5).

6. The magnesium metal shaft furnace reducer for vibration tapping as claimed in claim 2, wherein: There is a furnace bottom vertical tank hole (9) at the connection between the bottom of the reduction furnace (1) and the reduction tank (2). The upper part of the furnace bottom vertical tank hole (9) matches the inclined surface of the reduction tank (2), and the lower part of the furnace bottom vertical tank hole (9) is a key-shaped hole. Inside the key-shaped hole, there is a lower seal (8). The upper edge of the lower seal (8) is closely attached to the bottom of the reduction furnace (1). The lower seal (8) is split-type and includes 2 semi-circular rings divided along the diameter. When the lower seal (8) is combined, its inner surface is closely attached to the outer wall of the reduction tank (2), and when separated, its outer surface is attached to the key-shaped hole.

7. A vertical retort reduction furnace for magnesium metal with vibration discharging as claimed in claim 1, characterized in that: The lower mechanism (7) is installed separately.

8. The magnesium metal shaft furnace reduction furnace for vibrating tapping as claimed in claim 1, wherein: The bottom of the reduction tank (2) is provided with a cooling water jacket, and the lower mechanism (7) is connected to the outer wall of the cooling water jacket.

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