Circulating device for reducing concentration of zinc mud in deep cone tank in carbon-iron-zinc separation

Abstract

The utility model discloses a circulating device for reducing the concentration of zinc mud in a deep cone tank in carbon-iron-zinc separation, which relates to the technical field of circulating devices for carbon-iron-zinc separation, and comprises a tank body, one side of the lower part of the tank body is communicated with a suction pump, the outlet end of the suction pump is communicated with a return pipe, and one end of the return pipe far away from the suction pump is communicated with the upper part of the tank body. A wafer butterfly valve is fixedly mounted on the return pipe, and a conical shell is mounted at the bottom of the tank body; the air compressor in the shunting mechanism is started to generate compressed air and release the compressed air into the tank body, zinc mud is kept in a suspended state through disturbance, the possibility that the zinc mud is caked or blocked at the bottom of the tank body is reduced, and meanwhile, the zinc mud at the lower part of the tank body flows back to the upper part of the tank body through the return pipe by virtue of the circulating design of the suction pump. The backwash interval time is prolonged, the blockage of a water port of the plate-and-frame filter press caused by overhigh zinc sludge concentration is reduced, the backwash dosage of process water is reduced, the water burden of a system is reduced, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of circulation devices for carbon-iron-zinc separation, specifically a circulation device for reducing the concentration of zinc mud in a deep cone tank during carbon-iron-zinc separation. Background Technology

[0002] In some ores, elements such as carbon, iron, and zinc often exist in the form of complex compounds or mixtures. For example, some iron ores may contain both carbonaceous impurities and zinc compounds. The carbon-iron-zinc separation process uses a series of physical and chemical methods to separate these different components.

[0003] Currently, during the production and operation of the carbon-iron-zinc separation project, the zinc mud filtration system is affected by the output and the water permeability of the filter cloth. Sometimes, the concentration of zinc mud in the deep cone tank is too high, and there is too much zinc mud sediment at the bottom, which causes excessive agitation load. Furthermore, after the plate and frame filter press is unloaded, the water inlet often gets blocked when slurry is injected into the plate and frame filter press. This requires a large amount of process water for backflushing, which increases the water load on the system. In addition, under these circumstances, the zinc mud concentration at the bottom of the cone is very high. When it is directly injected into the plate and frame filter press, the water permeability of the filter press deteriorates. It cannot filter out the water required for production, and the material cannot be pressed dry when unloading the plate, resulting in a high moisture content, which also increases the labor intensity of the workers.

[0004] To address this issue, we designed a circulation device to reduce the concentration of zinc mud in the deep cone tank during carbon-iron-zinc separation. Utility Model Content

[0005] The purpose of this invention is to provide a circulation device for reducing the concentration of zinc mud in a deep conical tank during carbon-iron-zinc separation, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a circulation device for reducing the concentration of zinc mud in a deep conical tank during carbon-iron-zinc separation. The device includes a tank body, a pump connected to one side of the lower part of the tank body, a return pipe connected to the outlet end of the pump, and the end of the return pipe away from the pump connected to the upper part of the tank body. A clamp butterfly valve is fixedly installed on the return pipe. A conical shell is installed at the bottom of the tank body, and a flow diversion mechanism is provided inside the conical shell.

[0007] Furthermore, the diversion mechanism includes microporous tubes arrayed inside the conical shell. The top of the microporous tubes penetrates the conical shell and communicates with the inside of the tank. The bottom of the microporous tubes is connected to a connecting pipe, and the bottom of the connecting pipe is connected to an air supply pipe. An air compressor is fixedly connected to one end of the air supply pipe that extends to the outside of the conical shell.

[0008] Furthermore, the reflux pipe is made of polyvinyl chloride.

[0009] Furthermore, a backflow preventer valve is fixedly installed on the microporous tube, and the backflow preventer valve is located inside the conical shell.

[0010] Furthermore, the gas supply pipe is fixedly connected to the air compressor via a threaded joint, and a sealing rubber sleeve is installed where the gas supply pipe passes through the side wall of the conical housing.

[0011] Furthermore, a discharge valve is fixedly installed at the discharge port at the bottom of the conical housing.

[0012] Furthermore, the microporous tubes are radially distributed around the center of the conical shell, and the microporous tubes are made of engineering plastic.

[0013] Furthermore, the discharge valve is fixedly connected to the discharge port at the bottom of the conical housing via a flange, and the discharge valve is made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By starting the air compressor in the diversion mechanism, compressed air is generated and released into the tank. The disturbance keeps the zinc mud in a suspended state, reducing the possibility of zinc mud clumping or clogging at the bottom of the tank. At the same time, the circulation design of the pump returning the zinc mud from the lower part of the tank to the upper part of the tank through the return pipe extends the backwashing interval, reduces the clogging of the plate and frame filter press nozzles caused by excessive zinc mud concentration, reduces the amount of process water used for backwashing, reduces the water burden on the system, improves filtration efficiency, reduces the moisture content of the finished zinc mud, and reduces the labor intensity of workers.

[0016] 2. The circulation flow rate of zinc mud slurry in the return pipe can be controlled by adjusting the valve plate opening, so as to achieve concentration gradient management and maintain uniform distribution of zinc mud in the tank. In case of maintenance or emergency, the valve can be completely closed to block the connection between the tank and the return pipe and prevent material backflow or leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This utility model Figure 2 A bottom view;

[0020] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0021] In the diagram: 1. Tank body; 2. Return pipe; 3. Clamping butterfly valve; 4. Pump; 5. Air compressor; 6. Gas supply pipe; 7. Discharge valve; 8. Microporous tube; 9. Connecting pipe; 10. Backflow preventer valve; 11. Conical shell. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a circulation device for reducing the concentration of zinc mud in a deep conical tank during carbon-iron-zinc separation, comprising a tank body 1, a pump 4 connected to one side of the lower part of the tank body 1, a return pipe 2 connected to the outlet end of the pump 4, and a return pipe 2 connected to the upper part of the tank body 1 at the end away from the pump 4. A clamp butterfly valve 3 is fixedly installed on the return pipe 2. A conical shell 11 is installed at the bottom of the tank body 1, and a diversion mechanism is provided inside the conical shell 11. The diversion mechanism includes microporous tubes 8 arranged in an array inside the conical shell 11. The top of the microporous tubes 8 penetrates the conical shell 11 and communicates with the inside of the tank body 1. A connecting pipe 9 is connected to the bottom of the microporous tubes 8, and an air supply pipe 6 is connected to the bottom of the connecting pipe 9. An air compressor 5 is fixedly connected to one end of the air supply pipe 6 extending to the outside of the conical shell 11. By disturbing the zinc mud, the possibility of zinc mud clumping or clogging at the bottom of the tank body 1 is reduced, the occurrence of water outlet clogging is reduced, and the system water burden caused by the need for a large amount of process water for backflushing due to water outlet clogging is reduced.

[0024] In practice, the air compressor 5 is turned on, and the compressed air it generates enters the microporous tube 8 through the air supply pipe 6 and the connecting pipe 9 and is released into the tank 1. This disturbs the zinc sludge that has settled at the bottom, keeping it in a suspended state, reducing the possibility of zinc sludge clumping or blockage, and reducing the possibility of nozzle blockage. The clamp butterfly valve 3 is opened and the pump 4 is started to pump the zinc sludge from the lower part of the tank 1 into the return pipe 2. The zinc sludge is then returned to the upper part of the tank 1 through the return pipe 2, allowing the zinc sludge to circulate inside the tank 1. This makes the zinc sludge distribution more uniform, reducing the problem of excessively high local concentrations, and thus reducing the system water burden caused by the need for a large amount of process water backflushing due to nozzle blockage.

[0025] See Figure 1 The reflux pipe 2 is made of PVC material that is resistant to acid and alkali corrosion, which can adapt to the chemical composition of materials in the carbon-iron-zinc separation process and extend the service life of the reflux pipe 2.

[0026] See Figures 2-4A backflow preventer valve 10 is fixedly installed on the microporous tube 8, located inside the conical shell 11, to prevent zinc sludge from flowing back into the microporous tube 8 and causing blockage. The microporous tube 8 is radially distributed around the center of the conical shell 11 to ensure that the gas can be evenly distributed into each tank 1, which is beneficial for uniform agitation. The microporous tube 8 is made of engineering plastic, which has good corrosion resistance and light weight, making it easy to install and maintain. The gas delivery pipe 6 is fixedly connected to the air compressor 5 through a threaded joint. A sealing rubber sleeve is installed at the point where the gas delivery pipe 6 passes through the side wall of the conical shell 11 to ensure airtightness and facilitate disassembly and maintenance. A discharge valve 7 is fixedly installed at the discharge port at the bottom of the conical shell 11. The discharge valve 7 is fixedly connected to the discharge port at the bottom of the conical shell 11 through a flange. The discharge valve 7 is made of stainless steel to enhance its corrosion resistance and wear resistance.

[0027] Working principle:

[0028] In use, the air compressor 5 is first started to deliver compressed air to the connecting pipe 9 through the air supply pipe 6. The compressed air is evenly released into the conical shell 11 through the microporous pipe 8 to aerodynamically disturb the deposited zinc mud. At the same time, the pump 4 is turned on to extract the high-concentration zinc mud from the lower part of the tank 1 and transport it to the upper part of the tank 1 through the return pipe 2 to achieve circulation dilution. During this process, the return flow rate is controlled by adjusting the opening of the clamp butterfly valve 3. When the concentration of zinc mud in the tank is reduced to the set range, the pump 4 and the air compressor 5 are turned off to complete the operation.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A circulating device for reducing the concentration of zinc sludge in a deep-cone tank in carbon-iron-zinc separation, comprising a tank body (1), characterized in that, A pump (4) is connected to the lower side of the tank (1). A return pipe (2) is connected to the outlet end of the pump (4). The end of the return pipe (2) away from the pump (4) is connected to the upper part of the tank (1). A clamp butterfly valve (3) is fixedly installed on the return pipe (2). A conical shell (11) is installed at the bottom of the tank (1). A flow diversion mechanism is provided inside the conical shell (11).

2. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 1, characterized in that: The diversion mechanism includes microporous tubes (8) arranged in an array inside the conical shell (11). The top of the microporous tubes (8) penetrates the conical shell (11) and communicates with the inside of the tank (1). The bottom of the microporous tubes (8) is connected to a connecting pipe (9). The bottom of the connecting pipe (9) is connected to an air supply pipe (6). An air compressor (5) is fixedly connected to one end of the air supply pipe (6) extending to the outside of the conical shell (11).

3. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 1, characterized in that: The return pipe (2) is made of polyvinyl chloride.

4. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 2, characterized in that: A backflow preventer valve (10) is fixedly installed on the microporous tube (8), and the backflow preventer valve (10) is located inside the conical shell (11).

5. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 2, characterized in that: The gas supply pipe (6) is fixedly connected to the air compressor (5) through a threaded joint, and a sealing rubber sleeve is installed at the point where the gas supply pipe (6) passes through the side wall of the conical housing (11).

6. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 4, characterized in that: A discharge valve (7) is fixedly installed at the discharge port at the bottom of the conical shell (11).

7. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 4, characterized in that: The microporous tubes (8) are radially distributed around the center of the conical shell (11), and the microporous tubes (8) are made of engineering plastic.

8. A circulating device for reducing the thickener concentration of zinc sludge in the separation of carbon, iron and zinc according to claim 6, characterized in that: The discharge valve (7) is fixedly connected to the discharge port at the bottom of the conical housing (11) via a flange. The discharge valve (7) is made of stainless steel.

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