Defoaming device for biological oxidation and cyanidation gold extraction process

Abstract

The utility model discloses a defoaming device for a biological oxidation and cyanidation gold extraction process, which comprises a stirring tank (1), a scraping plate (2), a rotating rod (3), an overflow tank (4), an overflow pipe (5) and a storage tank (6). And high-pressure water flow is sprayed in the overflow groove through a rotary screen plate and a nozzle to continue mechanical defoaming and hydraulic defoaming. By utilizing the defoaming device, not only can effective defoaming be realized, but also foam can be eliminated and separated synchronously, so that the defoaming efficiency is improved, and adverse influence on production indexes is avoided. And the device is simple in structure, low in equipment investment and lower in energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical smelting equipment technical field, concretely relates to a defoaming device for biological oxidation and cyanide gold extraction process. BACKGROUND

[0002] The biological oxidation-cyanide gold extraction process is a common production process for treating refractory gold ore. Due to the complexity of various elements in the ore, especially when treating gold concentrate, a large amount of foam is generated in the reactor, which affects the effect of biological oxidation or cyanidation, or causes overflow of the ore slurry, adversely affecting the production indicators.

[0003] Traditional defoaming methods generally include manual defoaming, defoaming agent defoaming, and mechanical defoaming. Manual defoaming has high labor intensity and low defoaming efficiency, while defoaming agents can adversely affect production indicators and are relatively expensive. Although mechanical defoaming can replace manual defoaming, it is relatively clean and defoaming, but it also has defects such as unsatisfactory defoaming effect, high energy consumption, and high maintenance cost. For example, Chinese patent application CN108315554A discloses a biological oxidation gold extraction system circulating cyclone defoaming device, which uses a centrifugal fan, a filter screen, a connecting hose, a gas-liquid separation mechanism, and a cyclone defoamer to achieve bubble extraction and crushing, but the working surface needs to be manually controlled, and the energy consumption is relatively high. Chinese patent application CN208933064U discloses an aeration tank defoaming device, which uses a movable pipeline and a high-pressure water source to fully defoam the aeration tank, but there is a problem of excessive defoaming water affecting the biological reaction material concentration of the aeration tank. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a defoaming device for biological oxidation and cyanide gold extraction process.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A defoaming device for biological oxidation and cyanide gold extraction process, comprising a stirring tank, a scraper, a rotating rod, an overflow tank, an overflow pipe, and a storage tank;

[0007] The inside of the stirring tank is provided with a scraper, a paddle, and a stirring screw; the upper part of the stirring tank is provided with an overflow port, and the lower part is provided with a discharge port connected with a discharge pipe; one end of the scraper and one end of the paddle are connected with the stirring screw, and one end of the scraper is connected to the upper part of the stirring screw, and the paddle is located below the scraper;

[0008] The upper part of the inside of the stirring tank is provided with an annular mesh ring, which comprises a ring mesh with a plurality of mesh holes uniformly arranged on the ring mesh; the ring mesh is arranged around the upper part of the inside of the stirring tank and corresponds to the position of the overflow port; the position of the scraper corresponds to the position of the annular mesh ring;

[0009] The rotating rod is arranged above the scraper, one end of the rotating rod is fixed to the stirring screw rod, the other end of the rotating rod is connected to the connecting rod perpendicularly, the lower end of the connecting rod is connected to the rotating mesh plate, and a plurality of mesh holes are uniformly arranged on the rotating mesh plate.

[0010] The overflow tank is an annular tank arranged at the upper portion of the outer side of the stirring tank, the top of the inner ring of the overflow tank is lower than the position of the overflow port, the rotating mesh plate is arranged in the overflow tank, and a flow outlet is arranged at the bottom of one side of the overflow tank.

[0011] Further, the inner side wall of the stirring tank is provided with a baffle.

[0012] Further, the annular mesh ring further comprises a supporting rod, and a plurality of supporting rods are uniformly arranged on the annular mesh in the circumferential direction.

[0013] Further, a plurality of scrapers are arranged in the stirring tank, and the scrapers are uniformly distributed in the circumferential direction.

[0014] Further, a plurality of rotating mesh plates are arranged in the overflow tank, the rotating mesh plates are uniformly distributed in the annular shape in the overflow tank, each rotating mesh plate is connected to a corresponding connecting rod, each connecting rod is connected to a corresponding rotating rod, and one end of each rotating rod is connected to the stirring screw rod.

[0015] Further, a plurality of nozzles are uniformly arranged on the overflow tank, the exit surface of the nozzle faces the inside of the overflow tank, and the water inlet end of the nozzle is connected to the high-pressure water pipe.

[0016] Further, the inner diameter of the annular mesh ring is the same as the inner diameter of the stirring tank.

[0017] Further, the inclination angle of the scraper is 45-90°.

[0018] Further, the width of the rotating mesh plate is the same as the ring width of the overflow tank, and the aperture of the mesh hole on the rotating mesh plate is 0.2-2cm.

[0019] Further, the angle between the exit angle of the nozzle and the horizontal plane is 15-60°.

[0020] The beneficial effects of the utility model lie in that the utility model preliminarily defoams through the mechanical defoaming of the scraper and the annular mesh ring, the unbroken foam is scraped to the overflow tank, and the mechanical defoaming and hydraulic defoaming are continued through the rotating mesh plate and the nozzle in the overflow tank. The utility model can not only realize effective defoaming, but also realize synchronous foam elimination and separation, improve the defoaming efficiency, and does not cause adverse effects on production indexes. The utility model has the advantages of simple structure, low equipment investment and low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the device in operation according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the device of the embodiment of the utility model when not in operation;

[0023] Figure 3 This is a top view of the device according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of the annular mesh ring in the embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the rotating screen plate in an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0027] This embodiment provides a defoaming device for biological oxidation and cyanide gold extraction process, such as Figures 1-3 As shown, it includes a stirring tank 1, a scraper 2, a rotating rod 3, an overflow tank 4, an overflow pipe 5, a storage tank 6 and a nozzle 7.

[0028] The stirring tank 1 is used as a reaction device for biological oxidation and cyanidation, and is internally provided with a scraper 2, a baffle 12, a paddle 13 and a stirring screw 14; an overflow port is provided at the upper part of the stirring tank 1, and an emptying port is provided at the lower part, and the emptying port is connected to an emptying pipe 11; one end of the scraper 2 and one end of the paddle 13 are both connected to the stirring screw 14, one end of the scraper 2 is connected to the upper part of the stirring screw 14, and the paddle 13 is located below the scraper 2; a baffle 12 is provided on the inner side wall of the stirring tank 1, and the baffle is used to change the rotational motion of the slurry, eliminate vortexes, and improve the stirring and mixing effect. Specifically, in this embodiment, a plurality of baffles 12 are provided along the circumferential direction of the inner wall of the stirring tank 1, and the baffles 12 extend radially.

[0029] The upper part of the interior of the stirring tank 1 is provided with an annular mesh ring 15, such as Figure 4 As shown, the annular mesh ring 15 includes a ring mesh 151 and support rods 152, and a plurality of mesh holes are evenly distributed on the ring mesh 151; the ring mesh 151 is arranged around the upper part of the interior of the mixing tank 1 and corresponds to the position of the overflow port; a plurality of support rods 152 are evenly arranged along the circumference of the ring mesh 151, and the support rods 152 are used to support the ring mesh 151; the position of the scraper 2 corresponds to the position of the annular mesh ring 15.

[0030] In the embodiment, a plurality of scrapers 2 are arranged in the stirring tank 1, and each of the scrapers 2 is uniformly distributed in the circumferential direction; the scraper 2 is rectangular.

[0031] The rotating rod 3 is a circular or square long rod, which is horizontally arranged above the scraper 2, one end of the rotating rod 3 is fixed to the stirring screw rod 14, and the other end is connected to the connecting rod 31 in a perpendicular manner, and the lower end of the connecting rod 31 is connected to the rotating mesh plate 32, as shown in the figure, a plurality of mesh holes are uniformly arranged on the rotating mesh plate 32. Figure 5

[0032] The overflow tank 4 is an annular tank, which is arranged at the upper part of the outer side of the stirring tank 1, and the top of the inner circle is lower than the position of the overflow port; the rotating mesh plate 32 is located inside the overflow tank 4. Specifically, a plurality of rotating mesh plates 32 can be arranged in the overflow tank 4, each rotating mesh plate 32 is uniformly distributed in the annular shape in the overflow tank 4, and correspondingly, a plurality of rotating rods 3 and connecting rods 31 need to be arranged, each rotating mesh plate 32 is connected to the corresponding connecting rod 31, each connecting rod 31 is connected to the corresponding rotating rod 3, and one end of each rotating rod 3 is connected to the stirring screw rod 14. The side bottom of the overflow tank 4 is provided with a flow outlet, the flow outlet is connected to the upper end of the overflow pipe 5, the overflow pipe 5 is vertically arranged, and the lower end of the overflow pipe 5 is connected to the storage tank 6.

[0033] The storage tank 6 is a cylindrical tank body, which is used for temporarily storing the defoamed liquid. The inside of the storage tank 6 is provided with a conveying pump, which is used for conveying the liquid to the designated production section.

[0034] A plurality of nozzles 7 are uniformly arranged on the overflow tank 4, the exit surface of the nozzle 7 faces the inside of the overflow tank 4, and the water inlet end of the nozzle 7 is connected to the high-pressure water pipe.

[0035] In the embodiment, the inner diameter of the annular mesh ring 15 is the same as the inner diameter of the stirring tank 1, the height of the annular mesh ring 15 is 10-50 cm, the diameter of each mesh hole on the annular mesh ring 151 is 1-5 cm, and the number of support rods 152 is 6-36.

[0036] In the embodiment, the other end of the scraper 2 is 2-10 cm away from the inner side of the annular mesh ring 15, the inclination angle of the scraper 2 is 45-90°, and the number of the scrapers 2 is 2-4.

[0037] In the embodiment, the length of the rotating rod 3 is greater than the inner diameter of the stirring tank 1 and less than the outer diameter of the overflow tank 4, the number of the rotating rods 3 is 2-4, and the number of the rotating mesh plates 32 is correspondingly 2-4.

[0038] ​In the embodiment, the width of the rotating screen plate 32 is the same as the ring width of the overflow groove 4, and the aperture of the mesh hole on the rotating screen plate 32 is 0.2-2cm. The ring width of the overflow groove 4 is 10-50cm.

[0039] In the embodiment, the height of the outer ring of the overflow groove 4 is 10-50cm larger than the height of the rotating screen plate 32.

[0040] In the embodiment, the angle between the exit angle of the nozzle 7 and the horizontal plane is 15-60°, and the number of the nozzles 7 is 3-12.

[0041] When the defoaming operation is performed, the stirring screw 14 drives the paddle 3, the scraper 2 and the rotating rod 3 to rotate. The paddle 3 is used to provide stirring action for the stirring reaction in the stirring tank 1. Through the action of the annular mesh ring 15 and the scraper 2 on the foam, mechanical defoaming and scraping of the foam in the stirring tank 1 can be realized, and the unbroken foam is scraped to the overflow groove 4 through the annular mesh ring 15, and then further mechanical defoaming and hydraulic defoaming are realized through the rotating screen plate 32 and the nozzle 7 in the overflow groove 4, and the defoamed water flow is collected in the storage tank 6 through the overflow pipe 5, and the liquid in the storage tank 6 can be transported to the designated production section through the delivery pump. After the reaction is completed, the emptying pipe 11 can be opened, and the reaction product in the stirring tank 1 can be discharged from the emptying pipe 11.

[0042] For those skilled in the art, various corresponding changes and modifications can be given according to the above technical solutions and concepts, and all these changes and modifications should be included in the protection scope of the utility model claim.

Claims

1. A defoaming device for a biological oxidation and cyanidation gold extraction process, characterized in that, The stirring tank (1), the scraper (2), the rotating rod (3), the overflow tank (4), the overflow pipe (5) and the storage tank (6) are included. The scraper (2), the paddle (13) and the stirring screw rod (14) are arranged in the stirring tank (1); the upper portion of the stirring tank (1) is provided with an overflow port, and the lower portion is provided with a discharge port, and the discharge port is connected with a discharge pipe (11); one end of the scraper (2) and one end of the paddle (13) are connected with the stirring screw rod (14), and one end of the scraper (2) is connected to the upper portion of the stirring screw rod (14), and the paddle (13) is located below the scraper (2). The upper portion of the inside of the stirring tank (1) is provided with an annular mesh ring (15), and the annular mesh ring (15) includes a ring mesh (151), and a plurality of mesh holes are uniformly arranged on the ring mesh (151); the ring mesh (151) is arranged around the upper portion of the inside of the stirring tank (1) and corresponds to the position of the overflow port; the position of the scraper (2) corresponds to the position of the annular mesh ring (15). The rotating rod (3) is arranged above the scraper (2), one end of which is fixed to the stirring screw rod (14), and the other end is connected with a connecting rod (31) perpendicularly, and the lower end of the connecting rod (31) is connected with a rotating mesh plate (32), and a plurality of mesh holes are uniformly arranged on the rotating mesh plate (32). The overflow tank (4) is an annular tank, which is arranged around the upper portion of the outside of the stirring tank (1), and the top of the inner circle is lower than the position of the overflow port; the rotating mesh plate (32) is located in the overflow tank (4); one side of the bottom of the overflow tank (4) is provided with a flow port, and the flow port is connected to the upper end of the overflow pipe (5), and the lower end of the overflow pipe (5) is connected to the storage tank (6).

2. The apparatus of claim 1, wherein, The inner side wall of the stirring tank (1) is provided with a baffle (12).

3. The apparatus of claim 1, wherein, The annular mesh ring (15) further includes a support rod (152), and a plurality of support rods (152) are uniformly arranged on the ring mesh (151) in the circumferential direction.

4. The apparatus of claim 1, wherein, A plurality of scrapers (2) are arranged in the stirring tank (1), and each scraper (2) is uniformly distributed in the circumferential direction.

5. The apparatus of claim 1, wherein, A plurality of rotating mesh plates (32) are arranged in the overflow tank (4), and each rotating mesh plate (32) is uniformly distributed in the annular shape in the overflow tank (4), each rotating mesh plate (32) is connected to a corresponding connecting rod (31), each connecting rod (31) is connected to a corresponding rotating rod (3), and one end of each rotating rod (3) is connected to the stirring screw rod (14).

6. The apparatus of claim 1, wherein, A plurality of nozzles (7) are uniformly arranged on the overflow tank (4), the exit surface of the nozzle (7) faces the inside of the overflow tank (4), and the water inlet end of the nozzle (7) is connected with a high-pressure water pipe.

7. The apparatus of claim 1, wherein, The inner diameter of the annular mesh ring (15) is the same as the inner diameter of the stirring tank (1).

8. The apparatus of claim 1, wherein, The inclination angle of the scraper (2) is 45-90°.

9. The apparatus of claim 1, wherein, The width of the rotating mesh plate (32) is the same as the ring width of the overflow tank (4), and the mesh hole diameter of the rotating mesh plate (32) is 0.2-2cm.

10. The apparatus of claim 6, wherein, The angle between the exit angle of the nozzle (7) and the horizontal plane is 15-60°.

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