Foam gathering device for ferrous metal reverse flotation process tailing conveying trough

Abstract

The utility model provides a foam gathering device for a tailings conveying trough in a black metal reverse flotation process, which comprises a water storage tank, a water supply pipeline communicated with the water storage tank is arranged at the top of the water storage tank, and a water outlet plate is arranged at the bottom of the water storage tank; the water supply pipeline is L-shaped and comprises a vertical pipe and a horizontal pipe, the end part of the vertical pipe is inserted into the water storage tank, a water flow distributor is arranged at the end part of the vertical pipe, the horizontal pipe is provided with an adjusting valve, and two sectional splitter plates which are symmetrically arranged are arranged below the water flow distributor. Foam in the tailing conveying groove can be gathered, repeated foaming of the foam groove caused by flowing of ore pulp and tumbling of the bubbles under the action of foaming agents is avoided, the working efficiency of the flotation tailing pulp suction machine is improved, the tailing conveying capacity of a flotation machine is guaranteed, the tailing output rate of the flotation process is increased, and the flotation efficiency is improved. Therefore, flotation production indexes are guaranteed, and the method is of great significance to production of reverse flotation processes of flotation procedures of dressing plants.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of metal reverse flotation, and relates to a froth coalescing device for a black metal reverse flotation process tailing conveying groove. BACKGROUND

[0002] The black metal reverse flotation process is generally multi-stage flotation, so chemical defoaming agents cannot be used for defoaming during the conveying of the concentrate / tailing in the production process, but the roughing, concentration and scavenging tailings still contain part of the frother component, and repeated frothing and difficult froth conveying occur in the tailing conveying process of each stage of flotation, which leads to problems such as untimely tailing conveying, froth overflow and substandard production indexes, and meanwhile, the amount of froth in the tailing conveying process also seriously restricts the production capacity of the black metal reverse flotation process flow.

[0003] The existing defoaming technology has the following defects: (1) single large-aperture water column is used to completely penetrate the froth layer of the ore pulp to defoam, which will impact the ore pulp at the bottom of the froth tank, and new bubbles will be formed under the action of the frother, repeated bubbles and broken bubbles have limited range; (2) single small-aperture water column is used to impact the froth layer, which cannot penetrate the froth layer to break the froth, and the broken bubble range is limited, which cannot achieve the ideal defoaming effect; (3) adding a depressant for defoaming has a great influence on the subsequent production process and production indexes of multi-stage reverse flotation; (4) mechanical defoaming has high cost, and affects the continuity of the multi-stage reverse flotation process and has limited processing capacity. UTILITY MODEL CONTENTS

[0004] The utility model discloses a froth coalescing device for a black metal reverse flotation process tailing conveying groove, which solves the problems of repeated frothing in the tailing conveying process of each stage of flotation, low washing efficiency of the washing machine, difficult froth conveying, untimely tailing conveying, froth overflow and substandard production indexes in the existing black metal reverse flotation process.

[0005] Therefore, the utility model takes the following technical scheme:

[0006] The utility model provides a kind of froth coalescing device for ferrous metal reverse flotation process tailings conveying tank, including water storage tank, the top of the water storage tank is equipped with water supply pipeline in communication with it, bottom is equipped with water outlet plate;The water supply pipeline is L-shaped, including vertical pipe and horizontal pipe, wherein, the end of the vertical pipe is inserted in water storage tank, and the end is equipped with water flow distributor, the horizontal pipe is equipped with regulating valve, the lower of the water flow distributor is equipped with two segmental flow splitter symmetrically, the two segmental flow splitter constitutes inverted V type.

[0007] The setting of the regulating valve is to adjust the water column pressure of the water outlet plate according to the different froth layer thickness, different bubble size and different froth density in the tailings conveying tank, so as to realize the coalescing of different froth layer thickness, different bubble size and different froth density in the tailings conveying tank.

[0008] Further, the segmental flow splitter is inclined, including first plate body, second plate body, third plate body and fourth plate body, and the heights of the four are decreasing in turn, the areas of the first plate body, the second plate body, the third plate body and the fourth plate body are all one quarter of the area of the segmental flow splitter, and the purpose of the setting is to make the water flow from the first plate body to the fourth plate body, and each plate body can divide about 1 / 4 of the water flow to achieve uniform distribution as much as possible.

[0009] The first plate body is provided with a plurality of regularly arranged first flow holes, the second plate body is provided with a plurality of regularly arranged second flow holes, the third plate body is provided with a plurality of regularly arranged third flow holes, and the fourth plate body is provided with a plurality of regularly arranged fourth flow holes.

[0010] The diameters of the first flow hole, the second flow hole, the third flow hole and the fourth flow hole increase in turn, and the four are staggered; wherein, the purpose of the different diameter flow holes is to achieve uniform water pressure and water flow of each water outlet hole of the water outlet plate, according to the distance between each segmental flow hole and the water flow distributor, the segmental flow splitter uses the method of increasing the diameter of each segmental flow hole in turn, which can buffer the water pressure of the water outlet plate and make the water flow evenly distributed in the water tank, so that the water outlet plate has relatively uniform water flow and water pressure, and the phenomenon of repeated foaming of the froth tank caused by excessive pressure of the water outlet hole near the water flow distributor is eliminated; in addition, the first flow hole, the second flow hole, the third flow hole and the fourth flow hole are staggered, so that each segmental flow hole can be passed by the water flow, achieving reasonable and uniform distribution effect.

[0011] Further, the diameter of the first flow hole is 8-11 mm, the diameter of the second flow hole is 12-14 mm, the diameter of the third flow hole is 15-16 mm, and the diameter of the fourth flow hole is 18-20 mm.

[0012] Furthermore, the distance between the water flow distributor and the segmented diversion plate is 10~30mm; wherein, the water flow distributor is used to restrict the water supply point of the segmented diversion plate, so that the water flow must pass through the top of the segmented diversion plate so that it flows downward.

[0013] Furthermore, the length of the water flow distributor is the same as the width of the water storage tank, it is located at the center of the water storage tank, and both ends of the water flow distributor are in perpendicular contact with the inner wall of the water storage tank, so as to achieve uniform longitudinal water supply of the segmented diversion plate and uniform water distribution on the surface of the segmented diversion plate.

[0014] Furthermore, the water flow distributor is horizontally positioned and vertically connected to the water supply pipeline. The bottom of the water flow distributor has a strip-shaped opening, and the top is connected to the water supply pipeline.

[0015] Furthermore, the strip-shaped opening is located above the connection point of the two segmented diverter plates, and the two are arranged opposite to each other.

[0016] Furthermore, the water outlet plate is provided with a number of regularly arranged water outlet holes with a diameter of 3~6mm. Different hole diameters and arrangement densities of water outlet holes are selected according to the foam density in the multi-stage reverse flotation process.

[0017] Specifically, if the foam density is high, the bubbles are viscous and tough, the foam has low fluidity and is not easily broken, then a relatively high-pressure water jet is needed to penetrate part of the foam layer to break the bubbles and achieve the effect of foam cohesion. Therefore, a water outlet plate with small aperture and dense arrangement is suitable. If the foam density is low, the bubbles are relatively loose, the bubbles are viscous and brittle, and are easily broken, then a relatively low-pressure water jet is needed to penetrate part of the foam layer to break the bubbles and achieve the effect of foam cohesion. Therefore, a water outlet plate with large aperture and dispersed arrangement is suitable.

[0018] Furthermore, the segmented diversion plate is the same width as the water storage tank, and its bottom edge is in complete contact with the bottom edge inside the water storage tank.

[0019] Furthermore, the combined length of the two segmented diversion plates is exactly equal to the inner length of the water storage tank.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model can control the water pressure and flow rate of the water supply pipeline by adjusting the valve according to the size and density of the bubbles in the tailings conveying tank. Under a certain pressure, the dense water column on the water outlet plate penetrates the foam layer at a depth of 1 / 2 to 2 / 3 in the tailings conveying tank, thereby breaking up the bubbles in the tailings conveying tank. This can both expel the air and prevent it from impacting the slurry at the bottom of the foam tank, thus preventing repeated foaming and effectively achieving foam compaction.

[0022] 2. This utility model achieves a uniform distribution of water volume and pressure in the water storage tank by setting up a segmented diversion plate to divert water in multiple segments, so as to make the water outlet pressure uniform and avoid the problem of foam rolling and repeated foaming under the action of foaming agent due to uneven pressure in each water outlet.

[0023] 3. This utility model can control the amount of water discharged by adjusting the valve according to the amount of tailings thrown out of the flotation machine, and its use does not affect the subsequent process operation and production indicators.

[0024] 4. This utility model can not only achieve foam agglomeration in the tailings conveying tank in the ferrous metal reverse flotation process, but also adjust the tailings conveying concentration in the tailings conveying tank by adjusting the water output through the valve, effectively enhancing the working efficiency of the washing machine and increasing the tailings conveying rate in the flotation process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the water flow distributor in this utility model;

[0028] Figure 4 This is a top view of the mid-section diverter of this utility model.

[0029] In the diagram, 1-regulating valve, 2-water supply pipeline, 3-water flow distributor, 3a-strip opening, 4-segmented diversion plate, 4a-first plate, 4a1-first diversion hole, 4b-second plate, 4b1-second diversion hole, 4c-third plate, 4c1-third diversion hole, 4d-fourth plate, 4d1-fourth diversion hole, 5-water storage tank, 6-water outlet plate. Detailed Implementation

[0030] The technical solution of this utility model will be described below with reference to the accompanying drawings and implementation methods.

[0031] like Figure 1 and 2 As shown, a foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process includes a water storage tank 5 with dimensions of 1500mm*300mm*250mm; the bottom of the water storage tank 5 is open, and a water supply pipe 2 is provided at the top and connected thereto, and a water outlet plate 6 is provided at the bottom.

[0032] The water supply pipeline 2 is L-shaped and includes a vertical pipe and a horizontal pipe; the end of the vertical pipe is inserted into the water storage tank 5 and is equipped with a water flow distributor 3 at the end, and the horizontal pipe is equipped with a regulating valve 1.

[0033] The length of the water distributor 3 is the same as the width of the water storage tank 5. It is located at the center of the water storage tank 5, and both ends of the water distributor 3 are in vertical contact with the inner wall of the water storage tank 5. The water distributor 3 is set horizontally and is vertically connected to the water supply pipe 2.

[0034] like Figure 3 As shown, the bottom of the water flow distributor 3 is provided with a strip opening 3a, and the top is connected to the water supply pipe 2; the strip opening 3a is located above the connection of the two segmented diversion plates 4, and the two are arranged opposite to each other.

[0035] Below the water flow distributor 3 are two symmetrically arranged segmented diversion plates 4, with a distance of 10mm between the water flow distributor 3 and the segmented diversion plates 4.

[0036] The two segmented diversion plates 4 form an inverted V shape. The length of the two segmented diversion plates 4 after being spliced ​​together is exactly equal to the inner length of the water storage tank 5. At the same time, the segmented diversion plates 4 are the same width as the water storage tank 5, and their bottom edges are in complete contact with the inner bottom edge of the water storage tank 5.

[0037] like Figure 4 As shown, the segmented diversion plate 4 is inclined and includes a first plate 4a, a second plate 4b, a third plate 4c, and a fourth plate 4d, with the height of the four plates decreasing sequentially. The first plate 4a has a number of first diversion holes 4a1 arranged in a regular pattern, the second plate 4b has a number of second diversion holes 4b1 arranged in a regular pattern, the third plate 4c has a number of third diversion holes 4c1 arranged in a regular pattern, and the fourth plate 4d has a number of fourth diversion holes 4d1 arranged in a regular pattern. The diameters of the first diversion holes 4a1, the second diversion holes 4b1, the third diversion holes 4c1, and the fourth diversion holes 4d1 increase sequentially and are arranged in an alternating manner.

[0038] Specifically, the diameter of the first diversion hole 4a1 is 8mm, the diameter of the second diversion hole 4b1 is 12mm, the diameter of the third diversion hole 4c1 is 15mm, and the diameter of the fourth diversion hole 4d1 is 18mm.

[0039] In addition, the water outlet plate 6 is provided with several regularly arranged water outlet holes with a diameter of 3mm; depending on the properties of the foam, the diameter and arrangement distance of the water outlet holes on the water outlet plate 6 can be adjusted.

[0040] When the amount of foaming agent added is large and the concentration is high, the foam is relatively dense, the bubble viscosity is relatively high, the toughness is relatively strong, the foam fluidity is low, and it is not easy to break. At this time, by adjusting valve 1 to increase the water pressure in water supply pipe 2, the relatively high pressure water jet can penetrate the foam layer and break the bubbles. When the amount of foaming agent added is small and the concentration is low, the foam is relatively dispersed, the bubble viscosity is low, the brittleness is strong, and it is easy to break. At this time, by adjusting valve 1 to decrease the water pressure in water supply pipe 2, the relatively low pressure water jet can penetrate the foam layer and break the bubbles.

[0041] The working principle of this utility model is as follows:

[0042] First, the entire device is erected 500-550mm above the froth tank at the tail end of the flotation tailings conveyor, with the outlet plate 6 facing downwards, and the entire device and the froth tank are placed horizontally. Second, the water flow is evenly distributed to the two side-section diversion plates 4 through the water supply pipe 2 and the water flow distributor 3. Then, the water is further divided through the diversion holes of different diameters on the first plate 4a, the second plate 4b, the third plate 4c, and the fourth plate 4d, so that the water flow of the slurry in the water tank 5 is relatively balanced and the water supply pressure is relatively stable in each diversion hole. At the same time, the outlet plate 6 with appropriate hole diameter and arrangement distance is selected according to the different foam properties. Finally, by controlling the regulating valve 1, the water column at the outlet plate is made to reach a pressure that can penetrate 1 / 2 to 2 / 3 of the foam layer without impacting the slurry at the bottom of the froth tank. The dense water column breaks the upper layer of foam in the froth tank, expelling the air in the bubbles and restoring the slurry to a fluid state, thereby achieving the foam agglomeration effect.

Claims

1. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process, characterized in that, The system includes a water storage tank (5), with a water supply pipe (2) connected to the top of the water storage tank (5) and a water outlet plate (6) at the bottom. The water supply pipe (2) is L-shaped and includes a vertical pipe and a horizontal pipe. The end of the vertical pipe is inserted into the water storage tank (5) and is equipped with a water flow distributor (3). The horizontal pipe is equipped with a regulating valve (1). Below the water flow distributor (3) are two symmetrically arranged segmented diversion plates (4), which form an inverted V shape.

2. The foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The segmented diversion plate (4) is inclined and includes a first plate (4a), a second plate (4b), a third plate (4c) and a fourth plate (4d), with the height of the four plates decreasing sequentially. The first plate (4a) is provided with a plurality of first diversion holes (4a1) arranged in a regular pattern, the second plate (4b) is provided with a plurality of second diversion holes (4b1) arranged in a regular pattern, the third plate (4c) is provided with a plurality of third diversion holes (4c1) arranged in a regular pattern, and the fourth plate (4d) is provided with a plurality of fourth diversion holes (4d1) arranged in a regular pattern. The diameters of the first diversion hole (4a1), the second diversion hole (4b1), the third diversion hole (4c1), and the fourth diversion hole (4d1) increase sequentially, and the four are arranged in an alternating manner.

3. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 2, characterized in that, The diameter of the first diversion hole (4a1) is 8~11mm, the diameter of the second diversion hole (4b1) is 12~14mm, the diameter of the third diversion hole (4c1) is 15~16mm, and the diameter of the fourth diversion hole (4d1) is 18~20mm.

4. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The distance between the water flow distributor (3) and the segmented diversion plate (4) is 10~30mm.

5. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The length of the water distributor (3) is the same as the width of the water tank (5), it is located at the center of the water tank (5), and the two ends of the water distributor (3) are in perpendicular contact with the inner wall of the water tank (5).

6. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The water flow distributor (3) is set horizontally and is vertically connected to the water supply pipe (2). The bottom of the water flow distributor (3) is provided with a strip opening and the top is connected to the water supply pipe (2).

7. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 6, characterized in that, The strip opening is located above the connection between the two segmented diverter plates (4), and the two are arranged opposite to each other.

8. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The water outlet plate (6) is provided with a number of regularly arranged water outlet holes with a diameter of 3~6mm.

9. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The segmented diversion plate (4) is the same width as the water storage tank (5), and its bottom edge is in complete contact with the bottom edge inside the water storage tank (5).

10. A foam agglomeration device for a tailings conveying trough in a ferrous metal reverse flotation process according to claim 1, characterized in that, The length of the two segmented diversion plates (4) after being joined together is exactly equal to the inner length of the water storage tank (5).

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