Column type efficient thickener

Abstract

The utility model relates to a column type high-efficiency thickener which comprises an outer cylinder body, an inner cylinder body is arranged in the outer cylinder body, a middle partition plate is arranged in the inner cylinder body, the inner cylinder body is divided into an upper settling tank and a lower settling tank by the middle partition plate, and a rotational flow device is arranged on the middle partition plate. The upper end and the lower end of the rotational flow device are communicated with the upper settling tank and the lower settling tank respectively, an ore pulp feeding pipe is arranged on one side of the outer barrel and communicated with the rotational flow device, a flotation tank is arranged on one side of the inner barrel, and the flotation tank is communicated with the upper settling tank through a corrugated inclined grid device. The column type high-efficiency thickener disclosed by the utility model has a larger height-diameter ratio, is not easy to cause material blockage, not only can avoid the'rake pressing 'condition of the traditional thickener, but also can prolong the sedimentation distance, and can realize high-efficiency concentration of fine tailings.

Description

Technical Field

[0001] This utility model relates to a column-type high-efficiency thickener, belonging to the field of thickener technology. Background Technology

[0002] A thickener is a continuously operating thickening and clarification device, primarily used in processes requiring solid-liquid separation, such as tailings concentration in mineral processing, leachate concentration, and wastewater treatment. It is widely applied in industries such as mineral processing, metallurgy, and wastewater treatment. Compared to other thickening equipment, thickeners offer advantages such as continuous operation, stable and reliable production, low energy consumption, and simple operation. As a core piece of equipment in the slurry thickening process, the thickener is a crucial material buffer facility, playing a vital role in the mineral processing plant's production process and possessing significant value to the entire mineral processing engineering.

[0003] Tailings thickening is a crucial step in mineral processing plant water reuse and tailings discharge. Traditional tailings thickening methods primarily utilize rake thickeners, which can be categorized into single-layer thickeners, multi-layer thickeners, and high-efficiency thickeners based on their structural characteristics; and into center-drive and peripheral-drive types based on their transmission method. Rake thickeners accept both coarse and fine tailings as feed, but their relatively small height-to-diameter ratio and cone angle often lead to material blockage during mineral processing. Furthermore, if the grinding fineness remains coarse for an extended period, the rake thickener is highly susceptible to "rake-over-grind" failure. Additionally, traditional tailings thickening methods, due to the short settling distance of rake thickeners, cannot concentrate fine particles to the ideal concentration, resulting in reduced strength of the solidified material filling the well. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a column-type high-efficiency thickener that has a large height-to-diameter ratio, is not prone to material blockage, can avoid the "rake" situation of traditional thickeners, and at the same time extend the settling distance, thus achieving high-efficiency concentration of fine tailings.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: a column-type high-efficiency thickener, which includes an outer cylinder, an inner cylinder inside the outer cylinder, a middle partition plate inside the inner cylinder, the middle partition plate dividing the inner cylinder into an upper settling tank and a lower settling tank, a cyclone device on the middle partition plate, the upper and lower ends of the cyclone device being connected to the upper settling tank and the lower settling tank respectively, a slurry feed pipe on one side of the outer cylinder, the slurry feed pipe being connected to the cyclone device, a flotation tank on one side of the inner cylinder, and the flotation tank being connected to the upper settling tank through a corrugated inclined grid device.

[0006] Optionally, the outer cylinder is cylindrical in shape; the outer cylinder includes a base, an outer cylinder wall is provided on the base, and an end cap is provided on the top of the outer cylinder wall.

[0007] Optionally, an upper partition is provided below the end cover, and an exhaust gas chamber is formed between the end cover and the upper partition.

[0008] Optionally, the end cap is provided with a first manhole and an exhaust gas recovery port.

[0009] Optionally, the inner cylinder includes an upper section and a lower section, the upper section being cylindrical and the lower section being conical; a cap is provided at the top of the upper section; and a vibrator is provided on the outer wall of the lower section.

[0010] Optionally, the bottom of the upper settling tank is provided with an underflow valve; the bottom of the lower settling tank is provided with a concentrated mineral outlet.

[0011] Optionally, the slurry feed pipe is provided with a dilution water inlet.

[0012] Optionally, a static permeation foamer is provided in the flotation cell, and an air supply pipe is provided on the other side of the outer cylinder, the air supply pipe being connected to the static permeation foamer.

[0013] Optionally, a clean water drain outlet is provided at the bottom of the flotation cell.

[0014] Optionally, the top of the flotation cell is connected to the exhaust gas chamber via a pipe; the pipe is provided with an overflow port; an overflow chamber is provided on one side of the pipe, and the overflow port is connected to the overflow chamber; a wastewater discharge port is provided outside the overflow chamber.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] 1. This utility model has a large height-to-diameter ratio, which makes it less prone to material blockage. It can avoid the "rake" situation of traditional thickeners and extend the settling distance, thus achieving efficient concentration of fine tailings.

[0017] 2. Compared with other thickeners, this utility model has a smaller footprint, requires no mechanical power equipment, saves energy, operates virtually without faults and requires no maintenance, and greatly reduces investment and operating costs.

[0018] 3. Compared with inclined plate sedimentation tanks, this utility model has no possibility of collapse, requires no chemical addition, has a fast concentration speed, and the bottom flow concentration is controllable. The treated water is clearer and can even be discharged directly. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a column-type high-efficiency thickener according to the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of part A.

[0021] Figure 3 for Figure 1 Enlarged view of part B.

[0022] in:

[0023] Outer cylinder 1

[0024] Base 1.1

[0025] Outer cylinder wall 1.2

[0026] End cap 1.3

[0027] Upper partition 1.4

[0028] Exhaust chamber 1.5

[0029] Inner cylinder 2

[0030] Section 2.1 above

[0031] Next paragraph 2.2

[0032] 2.3 Cap

[0033] Middle partition 3

[0034] Upper settling tank 4

[0035] Lower sedimentation tank 5

[0036] 6 cyclone device

[0037] 7 slurry feed pipe

[0038] Flotation cell 8

[0039] Corrugated slanted grid device 9

[0040] First Manhole 10

[0041] Waste gas recovery port 11

[0042] Concentrated mineral exports 12

[0043] Dilution water inlet 13

[0044] Static permeation foaming unit 14

[0045] Gas supply pipe 15

[0046] 16 clear water drain outlets

[0047] Takeover 17

[0048] Overflow outlet 18

[0049] Overflow Room 19

[0050] 20 sewage discharge outlets

[0051] Inner Ladder 21

[0052] Second manhole 22

[0053] Vibrator 23. Detailed Implementation

[0054] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0055] like Figures 1-3 As shown in this embodiment, a column-type high-efficiency thickener includes an outer cylinder 1, an inner cylinder 2 inside the outer cylinder 1, a middle partition 3 inside the inner cylinder 2, the middle partition 3 dividing the inner cylinder 2 into an upper settling tank 4 and a lower settling tank 5, a cyclone device 6 on the middle partition 3, the upper and lower ends of the cyclone device 6 being connected to the upper settling tank 4 and the lower settling tank 5 respectively, a slurry feed pipe 7 on one side of the outer cylinder 1 being connected to the cyclone device 6, and a flotation tank 8 on one side of the inner cylinder 2 being connected to the upper settling tank 4 via a corrugated inclined grid device 9.

[0056] The outer cylinder 1 is cylindrical in shape.

[0057] The outer cylinder 1 includes a base 1.1, an outer cylinder wall 1.2 is provided on the base 1.1, and an end cap 1.3 is provided on the top of the outer cylinder wall 1.2;

[0058] An upper partition 1.4 is provided below the end cap 1.3, and an exhaust chamber 1.5 is formed between the end cap 1.3 and the upper partition 1.4;

[0059] The end cap 1.3 is provided with a first manhole 10 and an exhaust gas recovery port 11;

[0060] The inner cylinder 2 includes an upper section 2.1 and a lower section 2.2, wherein the upper section 2.1 is cylindrical and the lower section 2.2 is conical.

[0061] The upper section 2.1 is provided with a cap 2.3 at its top;

[0062] A vibrator 23 is provided on the outer wall of the lower section 2.2;

[0063] The bottom of the upper settling tank 4 is equipped with a bottom flow valve;

[0064] The bottom of the lower sedimentation tank 5 is provided with a concentrated mineral outlet 12;

[0065] The swirling device 6 is a hydrocyclone;

[0066] The slurry feed pipe 7 is equipped with a dilution water inlet 13;

[0067] A static permeation foamer 14 is provided inside the flotation cell 8, and the static permeation foamer 14 is located near the bottom of the flotation cell 8.

[0068] An air supply pipe 15 is provided on the other side of the outer cylinder 1, and the air supply pipe 15 is connected to the static permeation foamer 14.

[0069] The bottom of the flotation cell 8 is provided with a clear water drain outlet 16;

[0070] The top of the flotation cell 8 is connected to the exhaust gas chamber 1.5 via a pipe 17;

[0071] The corrugated inclined grid device 9 is located near the top of the upper settling trough 4;

[0072] An overflow port 18 is provided on the pipe 17;

[0073] An overflow chamber 19 is provided on one side of the pipe 17, and the overflow port 18 is connected to the overflow chamber 19;

[0074] The overflow chamber 19 is located between the cover 2.3 and the upper partition 1.4;

[0075] A sewage discharge outlet 20 is provided on the outside of the overflow chamber 19;

[0076] The lower part of the outer cylinder 1 is provided with an inner ladder 21 and a second manhole 22.

[0077] Working principle:

[0078] An external slurry pump delivers the slurry to the equipment's slurry feed pipe. The resulting high-velocity slurry, after self-priming some dilution water, enters the hydrocyclone tangentially. The reduced concentration of the slurry makes separation easier in the hydrocyclone. The density difference between mineral particles and water causes the mineral particles to separate rapidly under the action of strong centrifugal force. The separated particles rotate along the inside of the hydrocyclone and descend to the bottom of the equipment's cone-shaped outlet. The separated wastewater is output upwards from the central pipe of the hydrocyclone to the wastewater settling tank. Some of the tiny particles carried in the wastewater settle again in the settling tank with sufficient space. The wastewater to be treated slowly rises into the corrugated inclined screen device. Utilizing the principle of shallow inclined settling, some of the tiny particles in the wastewater settle again. The corrugated inclined plate has a 45° inclination angle, allowing the settled sludge particles to slide freely into the settling tank. Wastewater passing through the inclined plate screen device enters the flotation cell. The bottom of the flotation cell is equipped with a unique static permeation gas disperser, which generates static bubbles that freely rise and contact and capture particles in the downward-flowing wastewater. The bubbles rise to the top to form a rich foam layer. The fully enriched high-concentration foam enters the wastewater discharge outlet from the overflow outlet and is discharged into the slag collection tank. The foam overflow rate is controlled by a bottom pressure transmitter signal. After flotation, the treated wastewater is discharged from the bottom discharge outlet and can be reused.

[0079] The mortar at the bottom of the settling tank is detected by an online concentration meter. When the required concentration is reached, an output signal is used to control the valve discharge.

[0080] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A column-type high-efficiency thickener, characterized in that: It includes an outer cylinder (1), an inner cylinder (2) is provided inside the outer cylinder (1), a middle partition (3) is provided inside the inner cylinder (2), the middle partition (3) divides the inner cylinder (2) into an upper settling tank (4) and a lower settling tank (5), a vortex device (6) is provided on the middle partition (3), the upper and lower ends of the vortex device (6) are respectively connected to the upper settling tank (4) and the lower settling tank (5), a slurry feed pipe (7) is provided on one side of the outer cylinder (1), the slurry feed pipe (7) is connected to the vortex device (6), a flotation tank (8) is provided on one side of the inner cylinder (2), and the flotation tank (8) is connected to the upper settling tank (4) through a corrugated inclined grid device (9).

2. The column-type high-efficiency thickener according to claim 1, characterized in that: The outer cylinder (1) is cylindrical in shape. The outer cylinder (1) includes a base (1.1), an outer cylinder wall (1.2) is provided on the base (1.1), and an end cap (1.3) is provided on the top of the outer cylinder wall (1.2).

3. A column-type high-efficiency thickener according to claim 2, characterized in that: An upper partition (1.4) is provided below the end cap (1.3), and an exhaust chamber (1.5) is formed between the end cap (1.3) and the upper partition (1.4).

4. A column-type high-efficiency thickener according to claim 2, characterized in that: The end cap (1.3) is provided with a first manhole (10) and an exhaust gas recovery port (11).

5. A column-type high-efficiency thickener according to claim 1, characterized in that: The inner cylinder (2) includes an upper section (2.1) and a lower section (2.2). The upper section (2.1) is cylindrical and the lower section (2.2) is conical. A cap (2.3) is provided on the top of the upper section (2.1). A vibrator (23) is provided on the outer wall of the lower section (2.2).

6. A column-type high-efficiency thickener according to claim 1, characterized in that: The bottom of the upper settling tank (4) is equipped with an underflow valve; the bottom of the lower settling tank (5) is equipped with a concentrated mineral outlet (12).

7. A column-type high-efficiency thickener according to claim 1, characterized in that: The slurry feed pipe (7) is equipped with a dilution water inlet (13).

8. A column-type high-efficiency thickener according to claim 1, characterized in that: A static permeation foamer (14) is provided inside the flotation cell (8), and an air supply pipe (15) is provided on the other side of the outer cylinder (1), and the air supply pipe (15) is connected to the static permeation foamer (14).

9. A column-type high-efficiency thickener according to claim 1, characterized in that: The bottom of the flotation cell (8) is provided with a clear water drain outlet (16).

10. A column-type high-efficiency thickener according to claim 3, characterized in that: The top of the flotation cell (8) is connected to the exhaust gas chamber (1.5) via a pipe (17); an overflow port (18) is provided on the pipe (17); an overflow chamber (19) is provided on one side of the pipe (17), and the overflow port (18) is connected to the overflow chamber (19); a sewage discharge port (20) is provided on the outside of the overflow chamber (19).

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