Efficient flotation spraying defoaming agent mixing and stirring tank

Abstract

The utility model discloses an efficient flotation jet defoaming agent mixing and stirring tank which comprises a stirring tank and a pulp inlet pipe, a stirrer is arranged in the stirring tank, an ore pulp overflow pipe is arranged on the upper portion of the stirring tank, an emptying pipeline is arranged on the lower portion of the stirring tank, an emptying valve is arranged on the emptying pipeline, and the stirrer comprises a stirring shaft and stirring blades arranged on the lower portion of the stirring shaft. The upper portion of the stirring shaft is fixed to the upper end face of the stirring tank through a stirrer support, the stirring shaft is sleeved with a spraying barrel, a spraying opening is formed in the spraying barrel, an obliquely-upward spraying pipe is arranged at the spraying opening, the upper portion of the spraying barrel is fixed to the stirrer support through a spraying barrel hanging bracket, and the lower portion of the spraying barrel is fixed to the inner wall of the stirring tank through a spraying barrel support. The slurry inlet pipe penetrates through the side wall of the stirring tank and is communicated with the spraying barrel. By means of the device, it can be guaranteed that agents and ore pulp are fully mixed, unstable factors caused by water flushing defoaming and agent defoaming to a production system can be avoided, and the control stability of the flotation operation process is greatly improved.

Description

Technical Field

[0001] The utility model relates to a stirring tank, in particular to a high-efficiency flotation spray defoaming agent mixing stirring tank. Background Art

[0002] Before flotation operation, a slurry stirring tank is usually set up and foaming agents and collecting agents are added. Due to the increase in stirring intensity, the drugs in the stirring tank are fully mixed to produce a large amount of dense and extremely tough foam, which is continuously enriched and overflowed in large quantities, seriously affecting the efficiency of the mineral processing operation, resulting in the loss of valuable metals and having a great impact on the environmental sanitation on site.

[0003] Normally, in order to avoid overflow caused by excessively dense foam in the agitator tank, the following two methods are used for defoaming: 1. Add high-pressure defoaming water above the agitator tank for defoaming. Although this method has a certain inhibitory effect on the foam, it cannot solve the problem fundamentally. At the same time, a large amount of clean water enters the flotation system, resulting in a decrease in the pulp concentration, which brings great difficulties to the control of flotation process indicators and the recovery of valuable metals; 2. Add defoaming agent in the agitator tank to suppress foam. Although this method solves the problem at the front end, it cannot effectively generate foam when foaming is required for subsequent mineral processing operations, which also has a great impact on the control of mineral processing process indicators.

[0004] Therefore, it is particularly important to adopt a scientific and effective physical method to ensure that the drugs are fully mixed without causing any impact on subsequent mineral processing operations. After continuous exploration, experimentation, and summary, the problem was finally completely solved by allowing the slurry to achieve self-circulation in the stirring tank. Utility Model Content

[0005] The utility model aims to provide a high-efficiency flotation spray defoaming agent mixing and stirring tank.

[0006] Based on the above purpose, the utility model adopts the following technical solutions:

[0007] A high-efficiency flotation spray defoaming agent mixing and stirring tank comprises a stirring tank and a slurry inlet pipe, wherein an agitator is arranged in the stirring tank, a slurry overflow pipe is arranged at the upper part of the stirring tank, an emptying pipe is arranged at the lower part of the stirring tank, and an emptying valve is arranged on the emptying pipe, the agitator comprises a stirring shaft and stirring blades arranged at the lower part of the stirring shaft, the upper part of the stirring shaft is fixed to the upper end surface of the stirring tank through an agitator bracket, an injection tube is arranged on the outer sleeve of the stirring shaft, an injection port is arranged on the injection tube, and an oblique upward injection pipe is arranged at the injection port, the upper part of the injection tube is fixed to the agitator bracket through an injection tube hanger, and the lower part is fixed to the inner wall of the stirring tank through an injection tube support, and the slurry inlet pipe passes through the side wall of the stirring tank and is connected with the injection tube.

[0008] Furthermore, a plurality of flow stabilizing plates are provided on the inner wall of the stirring tank.

[0009] Furthermore, the ratio of the injection tube height to the stirring tank height is (1.8~2.2):(3~3.4), and the ratio of the injection tube inner diameter to the stirring tank inner diameter is (0.38~0.42):(3~3.4).

[0010] Furthermore, the portion of the slurry inlet pipe located in the stirring tank is horizontally arranged, and the vertical distance between the slurry inlet pipe and the lower end surface of the injection tube is 400~500mm.

[0011] Furthermore, the included angle between the injection pipe and the injection barrel is 36°~40°.

[0012] Furthermore, a stirring tank base is provided at the bottom of the stirring tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By installing an internal circulation injection device in the stirring tank, it can not only ensure that the reagent and the slurry are fully integrated and the effective flotation time is guaranteed, but also avoid the unstable factors brought to the production system by water defoaming and drug defoaming, which greatly improves the stability of the flotation process control and plays an important role in the flotation process of non-ferrous metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 yes Figure 1 Top view without the agitator support.

[0018] In the figure: 1. agitator tank, 2. jet tube support, 3. slurry inlet pipe, 4. agitator blade, 5. jet tube, 6. jet tube, 7. jet tube hanger, 8. agitator bracket, 9. agitator shaft, 10. flow stabilizer, 11. slurry overflow pipe, 12. drain valve, 13. agitator tank base. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments, but it should not be understood as a limitation to the present application.

[0020] Embodiment 1:

[0021] A high-efficiency flotation spray defoaming agent mixing and stirring tank, such as Figure 1 and Figure 2As shown, it includes a mixing tank 1 and a slurry inlet pipe 3, a stirrer is arranged in the mixing tank 1, a slurry overflow pipe 11 is arranged at the upper part of the mixing tank 1, an emptying pipe is arranged at the lower part of the mixing tank 1, and an emptying valve 12 is arranged on the emptying pipe, the stirrer includes a mixing shaft 9 and a mixing blade 4 arranged at the lower part of the mixing shaft 9, the upper part of the mixing shaft 9 is fixed to the upper end surface of the mixing tank 1 through a mixing shaft bracket 8, a jet tube 6 is arranged on the outer sleeve of the mixing shaft 9, a jet port is arranged on the jet tube 6, and an obliquely upward jet pipe 5 is arranged at the jet port, the upper part of the jet tube 6 is fixed to the mixing tank bracket 8 through a jet tube hanger 7, and the lower part is fixed to the inner wall of the mixing tank 1 through a jet tube support 2, and the slurry inlet pipe 3 passes through the side wall of the mixing tank 1 and is connected to the jet tube 6. A plurality of flow stabilizing plates 10 are arranged on the inner wall of the mixing tank 1. The ratio of the height of the injection tube 6 to the height of the stirring tank 1 is (1.8-2.2): (3-3.4), the height of the injection tube 6 is 1.8-2.2 m, and the inner diameter of the injection tube 6 is 380-420 mm. The angle between the injection pipe 5 and the injection tube 6 is 35°-40°. The part of the slurry inlet pipe 3 located in the stirring tank 1 is horizontally arranged, and the vertical distance between the slurry inlet pipe 3 and the lower end surface of the injection tube 6 is 400-500 mm.

[0022] A stirring tank base 13 is provided at the bottom of the stirring tank 1 .

[0023] The utility model mainly utilizes the centrifugal force generated by stirring to drive the slurry to form negative pressure in the injection tube 6, and sprays it upward through the injection pipe 5, so as to achieve the purpose of sufficient stirring, fusion and bubble breaking.

[0024] When in use, the speed of the stirring shaft 9 is 165~175 r / min. If the speed is too high, the liquid surface stability is too poor, and if the speed is too low, effective centrifugal force cannot be formed; the injection tube 6 is 2m high and has an inner diameter of 400mm. The stirring tank 1 is 3.15m high and has an inner diameter of 3.15m. The ratio of the height of the injection tube 6 to the height of the stirring tank 1 is 2:3.15. If it is too long or too short, the injection cannot be achieved; the slurry inlet pipe 3 is connected to the bottom of the injection tube 6 at 450mm upward, and the angle between the injection tube 5 and the injection tube 6 is 39°. The axial length of the injection tube 5 is 230mm-300mm, and the inner diameter is 100mm-120mm.

[0025] The above description is only a partial implementation mode of the present utility model. For ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the principle of the present utility model. These improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A high-efficiency flotation spray defoaming agent mixing and stirring tank, characterized in that: It includes a mixing tank and a slurry inlet pipe, wherein an agitator is arranged in the mixing tank, a slurry overflow pipe is arranged at the upper part of the mixing tank, an emptying pipe is arranged at the lower part of the mixing tank, and an emptying valve is arranged on the emptying pipe. The agitator includes a mixing shaft and a mixing blade arranged at the lower part of the mixing shaft, the upper part of the mixing shaft is fixed to the upper end surface of the mixing tank through an agitator bracket, an injection cylinder is arranged on the outer sleeve of the mixing shaft, an injection port is arranged on the injection cylinder, and an upward oblique injection pipe is arranged at the injection port, the upper part of the injection cylinder is fixed to the agitator bracket through an injection cylinder hanger, and the lower part is fixed to the inner wall of the mixing tank through an injection cylinder support, and the slurry inlet pipe passes through the side wall of the mixing tank and is connected with the injection cylinder.

2. The high-efficiency flotation spray defoaming agent mixing and stirring tank according to claim 1 is characterized in that: The inner wall of the stirring tank is provided with a plurality of flow stabilizing plates.

3. The high-efficiency flotation spray defoaming agent mixing and stirring tank according to claim 1 is characterized in that: The ratio of the injection tube height to the stirring tank height is (1.8~2.2):(3~3.4), and the ratio of the injection tube inner diameter to the stirring tank inner diameter is (0.38~0.42):(3~3.4).

4. The high-efficiency flotation spray defoaming agent mixing and stirring tank according to claim 1 is characterized in that: The included angle between the injection pipe and the injection barrel is 36°~40°.

5. The high-efficiency flotation spray defoaming agent mixing and stirring tank according to claim 1 is characterized in that: The slurry inlet pipe is located in the part of the mixing tank and is horizontally arranged. The vertical distance between the slurry inlet pipe and the lower end surface of the injection tube is 400~500mm.

6. The high-efficiency flotation spray defoaming agent mixing and stirring tank according to claim 1 is characterized in that: A stirring tank base is provided at the bottom of the stirring tank.

Images