Vanadium pentoxide vanadium precipitation section production mechanism

Abstract

The utility model discloses a production mechanism for a vanadium pentoxide precipitation section. The production mechanism comprises a clarification tank, a vanadium precipitation tank, a cooling tank, a filter press and a sewage treatment tank which are sequentially arranged and communicated, the clarification tank is communicated with the vanadium precipitation tank, the vanadium precipitation tank is suspended above the cooling tank, and a stirring structure is arranged in the vanadium precipitation tank; the stirring structure comprises a motor, a rotating shaft and spiral fan blades, the motor is fixedly arranged outside the vanadium precipitation tank, the rotating shaft is connected with the output end of the motor and axially extends into the vanadium precipitation tank, and the spiral fan blades are arranged at intervals in the axial direction of the rotating shaft; one end of the heating pipe is communicated with a heating air source, the other end of the heating pipe extends into the vanadium precipitation tank and is annularly arranged around the rotating shaft by taking the rotating shaft as an axis, and a plurality of heating air outlet holes are uniformly distributed in the annular end of the heating pipe at intervals. Heating steam is conveyed into the vanadium precipitation tank through the heating air outlet holes in the heating pipe, the coverage range of heating work is widened, and the heating effect of materials in the vanadium precipitation tank is better.

Description

Technical Field

[0001] This utility model relates to the field of vanadium pentoxide production technology, and in particular to a vanadium pentoxide precipitation section production mechanism. Background Technology

[0002] In the production of vanadium pentoxide, after acid leaching of vanadium slag, the resulting vanadium-containing solution needs to be subjected to vanadium precipitation treatment. Vanadium precipitation tank is a commonly used vanadium precipitation equipment in the vanadium precipitation production process. The vanadium-containing solution is heated and stirred in the vanadium precipitation tank to obtain the vanadium precipitation solution.

[0003] Chinese utility model patent document with authorization announcement number CN205821423U discloses a vanadium deposition tank. The technical solution includes a tank body, a support rod at the bottom of the tank body, a controller on the outer wall of the tank body, a cover at the top of the tank body, a motor at the top of the cover, the motor being electrically connected to the controller, a rotating shaft at the center of the bottom of the cover, the motor being connected to the rotating shaft via a rotor, a stirring rod on the outer wall of the rotating shaft, and heating rods on both the left and right sides of the stirring rod.

[0004] The technical solution disclosed in the aforementioned patent documents involves installing a heating rod on a rotating shaft. The rotation of the shaft drives the heating rod to rotate, thereby stirring and heating the material inside the tank. Although this can achieve heating during the vanadium precipitation process, the heating rod needs to be in constant dynamic motion and continuously colliding with the material, which can easily damage the heating rod. Furthermore, although it is a rotating heating method, the actual area of ​​material contacted by the heating rod is relatively small, leaving room for improvement in heating effect and efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a vanadium pentoxide precipitation section production mechanism that can effectively improve the heating efficiency and heating effect during the vanadium precipitation process.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a vanadium pentoxide precipitation section production mechanism, including a clarification tank, a vanadium precipitation tank, a cooling tank, a filter press, and a sewage treatment tank arranged and connected in sequence; the clarification tank is connected to the vanadium precipitation tank, the vanadium precipitation tank is suspended above the cooling tank, and a stirring structure is provided inside the vanadium precipitation tank; the stirring structure includes a motor, a rotating shaft, and spiral fan blades, the motor is fixedly installed outside the vanadium precipitation tank, the rotating shaft is connected to the output end of the motor and extends axially into the vanadium precipitation tank, and multiple spiral fan blades are arranged at intervals along the axial direction of the rotating shaft; it also includes a heating pipe, one end of which is connected to a heating gas source, and the other end of the heating pipe extends into the vanadium precipitation tank, the end of the heating pipe located inside the vanadium precipitation tank is arranged in a ring around the rotating shaft as the axis, and multiple heating gas outlets are evenly distributed at intervals on the ring end of the heating pipe.

[0007] As an improvement to the above solution: a protective cover is also fixedly installed on the upper part of the annular end of the heating tube. The protective cover is a conical cover with a smaller upper end and a larger lower end. The center of the protective cover is provided with a through hole that forms a clearance fit with the rotating shaft. The lower end of the protective cover is larger than the size of the annular end of the heating tube. The protective cover blocks the annular end of the heating tube.

[0008] As an improvement to the above solution, it also includes a slurry pump installed in the cooling pool, one end of which is connected to the filter press via a pipeline; a powder silo is installed below the filter press.

[0009] As an improvement to the above solution, a control valve is provided at the bottom of the vanadium deposition tank.

[0010] As an improvement to the above scheme, a liquid pump is also included, which is installed in the clarification tank, with one end of the liquid pump connected to the top of the vanadium settling tank via a pipe.

[0011] The beneficial effects of this utility model are as follows: This utility model improves the structure of the vanadium pentoxide precipitation tank used in the vanadium pentoxide precipitation production process by employing steam heating to heat the material inside the vanadium pentoxide precipitation tank; and optimizes the structure of the heating pipe by setting the end of the heating pipe extending into the vanadium pentoxide precipitation tank as a ring structure, so that the end of the heating pipe is arranged around the rotating shaft, and heating steam is delivered into the vanadium pentoxide precipitation tank through the heating vent on the heating pipe, thereby effectively increasing the diffusion effect of the heating steam in the vanadium pentoxide precipitation tank, increasing the coverage area of ​​the heating work, and improving the heating effect of the material inside the vanadium pentoxide precipitation tank; furthermore, there is no mutual interference between the heating pipe and the rotating shaft, and the heating pipe remains stationary, effectively avoiding damage and thus improving its service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structural layout of this utility model.

[0013] The markings in the diagram are as follows: 100-clarification tank, 110-liquid pump, 200-vanadium settling tank, 210-feeding port, 220-control valve, 300-cooling tank, 310-slurry pump, 400-filter press, 510-motor, 520-rotating shaft, 530-spiral fan blade, 540-heating pipe, 550-protective cover, 560-heating gas source, 600-sewage treatment tank, 700-powder silo. Detailed Implementation

[0014] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0015] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1 As shown, the vanadium pentoxide precipitation stage production apparatus disclosed in this utility model includes a clarification tank 100, a vanadium precipitation tank 200, a cooling tank 300, a filter press 400, and a wastewater treatment tank 600. The clarification tank 100 is used to clarify the vanadium-containing solution obtained after acid leaching; the vanadium precipitation tank 200 is used to heat the vanadium-containing solution to precipitate vanadium and obtain vanadium precipitate; the cooling tank 300 is used to cool the high-temperature vanadium precipitate; the filter press 400 is used to heat and filter the cooled vanadium precipitate to achieve solid-liquid separation; and the wastewater treatment tank 600 is used to receive the vanadium-precipitated wastewater separated by the filter press 400.

[0017] Specifically, such as Figure 1 As shown, the clarification tank 100 is connected to the vanadium precipitation tank 200 via a pipe. The vanadium precipitation tank 200 is suspended above the cooling tank 300 by a support. The vanadium precipitation tank 200 is equipped with a stirring structure, and a feeding port 210 is located at the top of the vanadium precipitation tank 200. Vanadium precipitation agent can be added to the vanadium precipitation tank 200 through the feeding port 210 to assist in the vanadium precipitation process. The cooling tank 300 is connected to the filter press 400 via a pipe. A powder silo 700 is located below the discharge port of the filter press 400, and the outlet of the filter press 400 is connected to the wastewater treatment tank 600 via a pipe. This invention, through the above structure, enables continuous operation from the acid leaching process to the vanadium precipitation process in vanadium pentoxide production, reducing the transfer steps between processes, thereby shortening the production cycle and effectively improving production efficiency.

[0018] This invention improves the vanadium precipitation effect by incorporating a stirring structure within the vanadium precipitation tank 200 to agitate the vanadium-containing solution, and by combining this with steam heating to further heat the solution. Specifically, as shown... Figure 1As shown, the stirring structure used in this invention includes a motor 510, a rotating shaft 520, and spiral fan blades 530. The corresponding structure used for steam heating includes a heating tube 540 and a heating gas source 560. The motor 510 is fixedly installed outside the vanadium precipitation tank 200. The rotating shaft 520 is connected to the output end of the motor 510 and extends axially into the vanadium precipitation tank 200. Multiple spiral fan blades 530 are arranged at intervals along the axial direction of the rotating shaft 520. The rotation of the motor 510 drives the rotating shaft 520 to rotate, thereby ultimately driving the spiral fan blades 530 to rotate and stir the vanadium-containing solution in the vanadium precipitation tank 200. This invention utilizes a heating gas source 560 located outside the vanadium deposition tank 200 to supply heating steam to the heating pipe 540. Heating the vanadium-containing solution inside the vanadium deposition tank 200 with steam effectively increases the heating coverage compared to existing heating methods. The heating steam can rapidly diffuse within the vanadium deposition tank 200, allowing it to contact as much of the vanadium-containing solution as possible, thus increasing the contact area and improving heat exchange efficiency, thereby effectively enhancing the heating effect on the vanadium-containing solution. One end of the heating pipe 540 is connected to the heating gas source 560, and the other end extends into the vanadium deposition tank 200. This invention optimizes the structure of the end of the heating pipe 540 extending into the vanadium deposition tank 200, so that the end of the heating pipe 540 inside the vanadium deposition tank 200 is arranged in a ring around the rotating shaft 520 as the axis, with multiple heating gas outlets evenly distributed at intervals on the ring end of the heating pipe 540. Through the above-mentioned structural improvements to the heating tube 540, the heating steam ejected from the heating tube 540 can diffuse in a ring within the vanadium settling tank 200, further improving the diffusion effect of the heating steam and thus enhancing the heating effect on the vanadium-containing solution. Furthermore, since the annular end of the heating tube 540 will not contact the rotating shaft 520 of the stirring structure, their operation is uninterrupted, effectively improving the stability of the stirring and heating structures and extending their service life.

[0019] Furthermore, such as Figure 1As shown, this utility model also includes a protective cover 550 fixedly installed on the upper part of the annular end of the heating tube 540. The protective cover 550 is a conical cover with a smaller upper end and a larger lower end. The center of the protective cover 550 has a through hole that forms a clearance fit with the rotating shaft 520. The lower end of the protective cover 550 is larger than the size of the annular end of the heating tube 540. The protective cover 550 blocks the annular end of the heating tube 540. By setting the protective cover 550 to block the upper part of the annular end of the heating tube 540, it is possible to prevent the vanadium precipitating agent fed from the feed port 210 of the vanadium precipitating tank 200 from falling onto the heating tube 540 and agglomerating, thus blocking the heating vent. At the same time, the conical shape of the protective cover 550 can promote the rapid sliding of the vanadium precipitating agent that falls on the top surface of the protective cover 550. The present invention can also guide the heating steam discharged from the heating tube 540 by setting the protective cover 550. The protective cover 550 blocks the heating steam above the heating tube 540 to prevent the heating steam from spreading upward and promotes the heating steam to exchange heat with the vanadium-containing solution downward.

[0020] To improve the efficiency of transfer between various devices, such as Figure 1 As shown, this invention includes a liquid pump 110 in the clarification tank 100 and a slurry pump 310 in the cooling tank 300. One end of the liquid pump 110 is connected to the top of the vanadium settling tank 200 via a pipe, and the other end of the slurry pump 310 is connected to the filter press 400 via a pipe. The powder silo 700 is directly connected to the discharge port at the bottom of the filter press 400. Furthermore, a control valve 220 is installed at the bottom of the vanadium settling tank 200. This control valve 220 allows for control of the discharge rate and speed of the vanadium settling tank 200, preventing excessive vanadium precipitate in the cooling tank 300 from affecting the cooling effect.

Claims

1. A vanadium pentoxide precipitation stage production mechanism, characterized in that: The system includes a clarification tank (100), a vanadium settling tank (200), a cooling tank (300), a filter press (400), and a wastewater treatment tank (600), which are arranged sequentially and connected to each other. The clarification tank (100) is connected to the vanadium settling tank (200), which is suspended above the cooling tank (300). The vanadium settling tank (200) is equipped with a stirring structure, and a feeding port (210) is provided at the top of the vanadium settling tank (200). The stirring structure includes a motor (510), a rotating shaft (520), and a spiral fan blade (530). The motor (510) is fixedly installed outside the vanadium settling tank (200), and the rotating shaft (520) is fixedly installed outside the vanadium settling tank (200). The fan is connected to the output end of the motor (510) and extends axially into the vanadium sink (200). Multiple spiral fan blades (530) are arranged at intervals along the axial direction of the rotating shaft (520). The fan also includes a heating tube (540), one end of which is connected to the heating gas source (560), and the other end of which extends into the vanadium sink (200). The end of the heating tube (540) located in the vanadium sink (200) is arranged in a ring around the rotating shaft (520) with the rotating shaft (520) as the axis. Multiple heating gas outlets are evenly distributed at intervals on the ring end of the heating tube (540).

2. The vanadium pentoxide precipitation section production mechanism as described in claim 1, characterized in that: A protective cover (550) is fixedly installed on the upper part of the annular end of the heating tube (540). The protective cover (550) is a conical cover with a smaller upper end and a larger lower end. The center of the protective cover (550) is provided with a through hole that forms a clearance fit with the rotating shaft (520). The lower end of the protective cover (550) is larger than the size of the annular end of the heating tube (540). The protective cover (550) covers the annular end of the heating tube (540).

3. The vanadium pentoxide precipitation section production mechanism as described in claim 1, characterized in that: It also includes a slurry pump (310) installed in the cooling pool (300), one end of which is connected to the filter press (400) via a pipe; a powder silo (700) is installed below the filter press (400).

4. The vanadium pentoxide precipitation section production mechanism as described in claim 2, characterized in that: The bottom of the vanadium precipitator (200) is equipped with a control valve (220).

5. The vanadium pentoxide precipitation section production mechanism as described in claim 1, characterized in that: It also includes a liquid pump (110) installed in the clarification tank (100), one end of which is connected to the top of the vanadium settling tank (200) via a pipe.

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