Vanadium pentoxide leaching production mechanism

Abstract

The utility model discloses a vanadium pentoxide leaching production mechanism which comprises a rotary kiln, a cooling pond, a wet mill, a settling pond group and a filter press which are arranged in sequence, and the settling pond group and the filter press form a liquid recovery channel through a pipeline; the system further comprises a vanadium slag hopper and a transfer device, the vanadium slag hopper is arranged between the filter press and the transfer device, and the filter press is arranged below the sedimentation tank set. According to the utility model, the transfer steps among the procedures can be reduced, the production cycle of the whole leaching procedure is effectively shortened, and meanwhile, the production efficiency of the leaching procedure is improved; according to the utility model, the sedimentation tank group is matched with the filter press, so that the vanadium slag slurry can be further extruded and filtered through the filter press while multi-stage sedimentation of materials is realized to achieve a good solid-liquid separation effect, and the recovery rate of a vanadium-containing solution is improved; the vanadium pentoxide leaching device not only can improve the production efficiency of the vanadium pentoxide leaching process, but also can improve the leaching quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of di vanadium pentoxide production, especially a di vanadium pentoxide leaching production mechanism. BACKGROUND

[0002] In the production of di vanadium pentoxide, vanadium slag raw materials need to be calcined to obtain calcified clinker, and then the calcified clinker needs to be leached to obtain vanadium slag and vanadium-containing solution. At present, the above-mentioned processes are carried out in different zones, and manual or machine transfer is carried out between zones. A lot of manpower and material resources are consumed in the transfer process, which is not conducive to shortening the production cycle and improving the production efficiency. UTILITARIAN CONTENT

[0003] The technical problem to be solved by the utility model is to provide a di vanadium pentoxide leaching production mechanism that can effectively improve production efficiency.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme: a di vanadium pentoxide leaching production mechanism, comprising a rotary kiln, a cooling pool, a wet grinder, a settling tank group and a filter press arranged in sequence, the settling tank group and the filter press forming a liquid recovery channel through pipelines; further comprising a vanadium slag hopper and a transfer equipment, the vanadium slag hopper being arranged between the filter press and the transfer equipment, and the filter press being arranged below the settling tank group.

[0005] As an improvement of the above-mentioned scheme: the settling tank group is composed of a first settling tank, a second settling tank and a clarifying tank arranged in sequence; the liquid level heights of the first settling tank, the second settling tank and the clarifying tank decrease in sequence, and the first settling tank is connected to the wet grinder.

[0006] As an improvement of the above-mentioned scheme: the height of the pool wall of the first settling tank near the wet grinder is higher than that near the second settling tank, the height of the pool wall of the second settling tank near the first settling tank is higher than that near the clarifying tank, and the height of the pool wall of the clarifying tank remains the same.

[0007] As an improvement of the above-mentioned scheme: the first settling tank and the second settling tank are respectively connected to the inlet end of the filter press through pipelines, and the outlet end of the filter press is connected to the clarifying tank through a pipeline.

[0008] As an improvement of the above-mentioned scheme: a mud pump is arranged on the pipeline connecting the first settling tank and the second settling tank to the filter press, and a liquid pump is arranged on the pipeline connecting the filter press to the clarifying tank.

[0009] As an improvement of the above-mentioned scheme: the setting height of the cooling pool is lower than that of the rotary kiln and the wet grinder, the cooling pool and the wet grinder are connected through an inclined plate chain conveyor, one end of the plate chain conveyor extends into the cooling pool, and the other end of the plate chain conveyor is raised to be connected to the wet grinder.

[0010] As an improvement of the above scheme: the vanadium slag hopper is a conical hopper, the large end of the conical hopper is the feeding end, and the small end of the conical hopper is the discharging end; the discharging end is provided with a discharging valve.

[0011] The beneficial effects of the present application are: the equipment used in the roasting process of the vanadium pentoxide and the equipment used in the leaching process are sequentially connected to realize continuous production, thereby reducing the transfer steps between processes, effectively shortening the production cycle of the entire leaching process, and improving the production efficiency of the leaching process; the present application uses a combination of a sedimentation tank group and a filter press to achieve multi-stage sedimentation of the material to achieve good solid-liquid separation effect, and the filter press can further extrude and filter the vanadium slag slurry to improve the recovery rate of the vanadium-containing solution; the present application not only improves the production efficiency of the vanadium pentoxide leaching process, but also improves the leaching quality. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The present application is a structural arrangement diagram.

[0013] In the figure, the marks are: 100-rotary kiln, 200-cooling pool, 300-wet mill, 400-sedimentation tank group, 410-first sedimentation tank, 420-second sedimentation tank, 430-clearing tank, 440-mud pump, 450-liquid pump, 500-filter press, 600-vanadium slag hopper, 610-discharging valve, 700-transfer equipment, 800-plate chain conveyor. DETAILED DESCRIPTION

[0014] In order to facilitate the understanding of the present application, the present application will be further described below in conjunction with the drawings.

[0015] In the description of the present application, it should be noted that the terms "front", "back", "left", "right", "up", "down", "inside" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0016] As Figure 1As shown in the utility model discloses a vanadium pentoxide leaching production mechanism including rotary kiln 100, cooling pool 200, wet grinder 300, sedimentation tank group 400, filter press 500, vanadium slag hopper 600 and transfer equipment 700, rotary kiln 100 is used to roast the mixture material for preparing vanadium pentoxide to obtain clinker, cooling pool 200 is used to cool the clinker obtained by roasting, wet grinder 300 is used to wet grinding the clinker after cooling to obtain vanadium-containing slurry, sedimentation tank group 400 is used to separate solid-liquid for vanadium-containing slurry to obtain vanadium-containing leaching solution, filter press 500 is used to pressurized filtration for the solid material separated in sedimentation tank group 400 to dialysis the vanadium-containing solution remaining in solid material, vanadium slag hopper 600 is used to store the vanadium slag waste material after filtration, and cooperate transfer equipment 700 to transport vanadium slag waste material, the utility model realizes the continuous production of vanadium pentoxide from the roasting process to the leaching process by the continuous connection of each equipment, eliminates the transportation process between each step, thereby effectively improve production efficiency.

[0017] Specifically, as Figure 1 shown in the utility model, rotary kiln 100, cooling pool 200, wet grinder 300, sedimentation tank group 400 and filter press 500 are sequentially arranged, and filter press 500 is arranged below sedimentation tank group 400, and at the same time, a liquid recovery channel is formed between sedimentation tank group 400 and filter press 500 through pipeline, and vanadium slag hopper 600 is arranged between filter press 500 and transfer equipment 700 as a relay component between filter press 500 and transfer equipment 700. The vanadium slag hopper 600 in the utility model adopts a conical hopper with a large upper end and a small lower end, the large end of the vanadium slag hopper 600 is the feeding end, and the small end is the discharging end; the conical hopper can make the vanadium slag slide to the bottom of the hopper as soon as possible. The utility model sets a discharge valve 610 at the discharging end of the vanadium slag hopper 600, which controls the opening and closing of the discharging end of the vanadium slag hopper 600 and controls the discharge amount of vanadium slag.

[0018] As Figure 1The utility model discloses a settling tank group 400 is by first settling tank 410, second settling tank 420 and clarification tank 430 are constituted, and the first settling tank 410, second settling tank 420 and clarification tank 430 are all the liquid pool that is formed by the pool wall of surrounding four sides, and the leaching process of vanadic oxide usually adopts the mixing of acid solution and vanadium-containing slurry, the setting mode and structure of the first settling tank 410, second settling tank 420 and clarification tank 430 are limited in the utility model, make the first settling tank 410, second settling tank 420 and clarification tank 430 are in turn and set up, namely, the side pool wall of the first settling tank 410 and the side pool wall of second settling tank 420 are in close contact, make the other side pool wall of second settling tank 420 and the side pool wall of clarification tank 430 are in close contact, the pool wall height of the first settling tank 410 close to the one side of wet grinder 300 is higher than the pool wall height close to the one side of second settling tank 420, the pool wall height of second settling tank 420 close to the one side of the first settling tank 410 is higher than the pool wall height close to the one side of clarification tank 430, and the pool wall height of clarification tank 430 keeps uniform. The liquid level of the first settling tank 410, second settling tank 420 and clarification tank 430 are in turn reduced, through the above-mentioned structure limitation, the liquid in the first settling tank 410 can enter second settling tank 420 by the overflow mode, and the liquid in second settling tank 420 can also enter clarification tank 430 by the overflow mode, and clarification tank 430 is the storage pool of final vanadium-containing solution, and it is not necessary to overflow outward, therefore the pool wall height of clarification tank 430 keeps same, and the first settling tank 410 is connected with the discharge end of wet grinder 300 through pipeline to deliver the vanadium-containing slurry obtained after wet grinding to the first settling tank 410 and carry out first settling in the first settling tank 410, while settling in the first settling tank 410, wet grinder 300 continuously delivers vanadium-containing slurry in the first settling tank 410, when the liquid level in the first settling tank 410 is too high, liquid can overflow and enter second settling tank 420 to carry out second settling, when the liquid level in second settling tank 420 is too high, liquid can overflow and enter clarification tank 430 to stand and clarify. The utility model realizes multiple settling of vanadium-containing slurry obtained after wet grinding through the above-mentioned settling tank group 400, thereby effectively improving leaching effect.

[0019] While the vanadium-containing slurry is settled to realize solid-liquid separation, the solid material separated is subjected to pressure filtration by the filter press 400. The settling separation of the settling tank cannot completely realize solid-liquid separation, and the settled solid material must have residual liquid. The recovery of the residual liquid in the solid material can further improve the leaching rate. The first settling tank 410 and the second settling tank 420 are respectively communicated with the inlet end of the filter press 500 by pipelines, and the outlet end of the filter press 500 is communicated with the clarifying tank 430 by a pipeline. The solid material separated by the first settling tank 410 and the second settling tank 420 is directly filtered by the filter press 500, so that the residual vanadium-containing solution in the solid material is precipitated and delivered to the clarifying tank 430 by the pipeline to be statically clarified. In order to assist the delivery of the solid material and the vanadium-containing solution, the slurry pump 440 is arranged on the pipeline communicated between the first settling tank 410 and the second settling tank 420 and the filter press 500, and the liquid pump 450 is arranged on the pipeline communicated between the filter press 500 and the clarifying tank 430.

[0020] As shown in Figure 1 The setting height of the cooling tank 200 is lower than the setting height of the rotary kiln 100 and the wet mill 300, so that the clinker obtained after roasting by the rotary kiln 100 can be directly delivered to the cooling tank 200 by falling under the action of gravity. One end of the plate chain conveyor 800 is arranged to extend into the cooling tank 200, and the other end of the plate chain conveyor 800 is arranged to extend to the wet mill 300. The clinker cooled in the cooling tank 200 is directly delivered to the wet mill 300 by the plate chain conveyor 800 for grinding.

Claims

1. A production plant for the leaching of vanadium pentoxide, characterized in that it comprises: The device comprises a rotary kiln (100), a cooling pool (200), a wet grinder (300), a settling pool group (400) and a filter press (500) arranged in sequence, the settling pool group (400) and the filter press (500) form a liquid recovery channel through pipelines; the device further comprises a vanadium slag hopper (600) and a transfer equipment (700), the vanadium slag hopper (600) is arranged between the filter press (500) and the transfer equipment (700), and the filter press (500) is arranged below the settling pool group (400); The settling pool group (400) is composed of a first settling pool (410), a second settling pool (420) and a clarifying pool (430) arranged in sequence; the liquid level of the first settling pool (410), the second settling pool (420) and the clarifying pool (430) decreases in sequence, and the first settling pool (410) is connected with the wet grinder (300); the height of the pool wall of the first settling pool (410) near the wet grinder (300) is higher than that of the pool wall near the second settling pool (420), the height of the pool wall of the second settling pool (420) near the first settling pool (410) is higher than that of the pool wall near the clarifying pool (430), and the height of the pool wall of the clarifying pool (430) remains unchanged; the first settling pool (410) and the second settling pool (420) are respectively connected with the inlet end of the filter press (500) through pipelines, and the outlet end of the filter press (500) is connected with the clarifying pool (430) through a pipeline; a slurry pump (440) is arranged on the pipeline connecting the first settling pool (410) and the second settling pool (420) with the filter press (500), and a liquid pump (450) is arranged on the pipeline connecting the filter press (500) with the clarifying pool (430); The setting height of the cooling pool (200) is lower than that of the rotary kiln (100) and the wet grinder (300), the cooling pool (200) is connected with the wet grinder (300) through an inclined plate chain conveyor (800), one end of the plate chain conveyor (800) extends into the cooling pool (200), and the other end of the plate chain conveyor (800) is raised to be connected with the wet grinder (300).

2. The di vanadyl pentoxide leaching production mechanism according to claim 1, characterized in that: The vanadium slag hopper (600) is a conical hopper, the large end of the conical hopper is a feeding end, and the small end of the conical hopper is a discharging end; a discharging valve (610) is arranged on the discharging end.

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