Flocculant adding device for thickener

Abstract

The present application relates to a flocculant adding device for a thickener. The flocculant adding device comprises an ore slurry feed pipe and a flocculant feed pipeline, wherein the ore slurry feed pipe is partially built in the thickener, and has one end for introducing ore slurry and the other end in communication with a feed well of the thickener; and the flocculant feed pipe comprises a vertical pipe, a dilution pump and a branch pipe, wherein the bottom end of the vertical pipe is in communication with the ore slurry feed pipe via the dilution pump, the top of the vertical pipe is located below the liquid level of the thickener, such that a supernatant in the thickener overflows into the vertical pipe; and the branch pipe has one end for introducing a flocculant and the other end in communication with the vertical pipe. In the present application, by providing the vertical pipe, the supernatant in the thickener is introduced into the vertical pipe, the flocculant is introduced into the vertical pipe through the branch pipe, the flocculant is mixed with the supernatant in the vertical pipe for diluting, diluted mixed liquid is conveyed to the ore slurry feed pipe under the action of the dilution pump to be mixed with the ore slurry, and the mixing efficiency is high, thereby improving the thickening effect.

Description

Thickener flocculant adding device TECHNICAL FIELD

[0001] The present application relates to the technical field of thickeners, in particular to a thickener flocculant adding device. BACKGROUND

[0002] At present, in the process of feeding, the thickener usually uses a pipeline to deliver the ore slurry to the feed well of the thickener, and adds flocculants in the feed well, so as to achieve the effect of optimizing flocculation after diluting and stirring the ore slurry.

[0003] Chinese patent CN218608167U discloses a flocculant distribution device and a ore slurry conveying device having the same, wherein the flocculant distribution device comprises a dilution pipe and a distribution box, the distribution box comprises a top plate, a bottom plate and a side plate connected between the top plate and the bottom plate, the top plate is provided with an inlet, the bottom plate is provided with an outlet, the output end of the dilution pipe is connected at the inlet, the projections of the inlet and the outlet in the horizontal plane are spaced apart, and the distribution pipe is connected at the outlet through a distribution pipe flange.

[0004] However, the above-mentioned patent scheme does not dilute the flocculant before adding it, which leads to low mixing efficiency of the flocculant and the ore slurry, and affects the thickening effect.

[0005] SUMMARY

[0006] Therefore, it is necessary to provide a thickener flocculant adding device to solve the problem of low mixing efficiency of undiluted flocculant and ore slurry, which affects the thickening effect.

[0007] The present application provides a thickener flocculant adding device, which comprises an ore slurry feeding pipeline and a flocculant feeding pipeline, the ore slurry feeding pipeline is partially built-in in the thickener, one end of the ore slurry feeding pipeline is used for feeding ore slurry, and the other end is connected with the feed well of the thickener, the flocculant feeding pipeline comprises a vertical pipe, a dilution pump and a branch pipe, the bottom end of the vertical pipe is connected with the ore slurry feeding pipeline through the dilution pump, the top of the vertical pipe is located below the liquid level of the thickener, so that the supernatant in the thickener overflows into the vertical pipe, and one end of the branch pipe is used for feeding flocculant, and the other end is connected with the vertical pipe.

[0008] Further, the vertical pipe comprises a first straight pipe, a conical pipe and a second straight pipe connected in sequence in the vertical direction, the side wall of the first straight pipe is connected with the branch pipe, the conical pipe expands in the vertical upward direction, and the dilution pump is installed in the second straight pipe.

[0009] Further, the dilution pump comprises an impeller built-in in the vertical pipe and a motor installed on the thickener, the output shaft of the motor extends into the vertical pipe and is connected with the impeller.

[0010] Further, the branch pipe is arranged along a tangent direction of the inner wall of the riser pipe.

[0011] Further, the ore pulp feeding pipeline comprises a horizontal dilution pipe extending into the thickener and communicating with the sidewall of the feeding well.

[0012] Further, the riser pipe is vertically arranged.

[0013] Further, the flow direction of the fluid in the riser pipe forms an acute angle with the flow direction of the fluid in the dilution pipe.

[0014] Further, the riser pipe is a telescopic pipe with adjustable length.

[0015] Further, the riser pipe comprises a first cylinder and a second cylinder, the bottom end of the first cylinder communicates with the ore pulp feeding pipeline via the dilution pump, and the first cylinder and the second cylinder are slidingly and sealingly connected in the vertical direction.

[0016] Further, the top end of the second cylinder is provided with a buoyancy body.

[0017] Compared with the prior art, the thickener flocculant adding device provided by the present application introduces the supernatant in the thickener into the riser pipe, and introduces the flocculant into the riser pipe through the branch pipe, the flocculant and the supernatant are mixed in the riser pipe, the flocculant is diluted, and the diluted mixed liquid is transported to the ore pulp feeding pipeline and mixed with the ore pulp under the action of the dilution pump, the mixing efficiency is high, and the thickening effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic view of the whole thickener flocculant adding device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present application will be specifically described below in combination with the drawings, wherein the drawings constitute a part of the present application, and are used to illustrate the principles of the embodiments of the present application, and are not used to limit the scope of the present application.

[0020] As shown in FIG. 1, the application provides a thickener flocculant adding device, which comprises a slurry feeding pipeline 100 and a flocculant feeding pipeline 200. The slurry feeding pipeline 100 is partially arranged in a thickener M. One end of the slurry feeding pipeline 100 is used for feeding slurry, and the other end is connected with a feeding well M1 of the thickener M. The flocculant feeding pipeline 200 comprises a vertical pipe 210, a dilution pump 220 and a branch pipe 230. The bottom end of the vertical pipe 210 is connected with the slurry feeding pipeline 100 through the dilution pump 220. The top of the vertical pipe 210 is located below the liquid level of the thickener M, so that the supernatant in the thickener M can overflow into the vertical pipe 210. One end of the branch pipe 230 is used for connecting with the flocculant, and the other end is connected with the vertical pipe 210.

[0021] In the implementation, the supernatant in the thickener M can be introduced into the vertical pipe 210 through the vertical pipe 210. The flocculant can be introduced into the vertical pipe 210 through the branch pipe 230. The flocculant and the supernatant are mixed in the vertical pipe 210, so that the flocculant is diluted. The diluted mixed liquid is transported to the slurry feeding pipeline 100 to mix with the slurry under the action of the dilution pump 220. The mixing efficiency is high, and the thickening effect is improved.

[0022] The slurry dilution pipeline in the embodiment is used for transporting the slurry to be flocculated and precipitated into the feeding well M1 of the thickener M.

[0023] In one embodiment, the slurry feeding pipeline 100 comprises a horizontally arranged dilution pipe, which extends into the thickener M and is connected with the side wall of the feeding well M1. Of course, in other embodiments, the slurry feeding pipeline 100 can adopt a pipeline with other shapes, as long as it can transport the slurry to the feeding well M1 of the thickener M. The application does not make any limitation in this regard.

[0024] The flocculant feeding pipeline 200 in the embodiment is a structure for adding flocculant into the slurry feeding pipeline 100. The supernatant in the thickener M is introduced to dilute the added flocculant. Without changing the feeding amount of the flocculant, the flow rate of the flocculant into the slurry feeding pipeline 100 can be improved, so as to facilitate the mixing between the flocculant and the slurry.

[0025] In one embodiment, the vertical pipe 210 comprises a first straight pipe, a tapered pipe and a second straight pipe connected in sequence along the vertical direction. The side wall of the first straight pipe is connected with the branch pipe 230. The tapered pipe is gradually expanded along the vertical upward direction. The dilution pump 220 is installed in the second straight pipe. It should be noted that the vortex formed by the straight pipe can be avoided to suck the undeposited slurry particles into the supernatant by arranging the tapered pipe.

[0026] In one embodiment, the dilution pump 220 comprises an impeller arranged in the vertical pipe 210 and a motor installed on the thickener M. The output shaft of the motor extends into the vertical pipe 210 and is connected with the impeller.

[0027] Of course, the dilution pump 220 can also be implemented in other forms of structures such as a submersible pump, and the present application does not make any limitation.

[0028] In order to improve the dilution effect of the supernatant on the flocculant, in an embodiment, the branch pipe 230 is arranged along the direction tangent to the inner wall of the stand pipe 210.

[0029] In an embodiment, the stand pipe 210 is vertically arranged. The mixed fluid (flocculant diluted by supernatant) entering the ore pulp feeding pipeline 100 flows into the stand pipe 210 in the radial direction.

[0030] In another embodiment, the flow direction of the fluid in the stand pipe 210 forms an acute angle with the flow direction of the fluid in the dilution pipe, so that the diffusion process of the mixed fluid in the ore pulp feeding pipeline 100 is less resistant, and the flocculant is more evenly dispersed.

[0031] In order to adapt to the liquid level change of the thickener M, in an embodiment, the stand pipe 210 is a telescopic pipe with adjustable length. The stand pipe 210 includes a first cylinder and a second cylinder, the bottom end of the first cylinder is connected with the ore pulp feeding pipeline 100 through the dilution pump 220, and the first cylinder and the second cylinder are slidingly and sealingly connected in the vertical direction. The top end of the second cylinder is provided with a buoyant body, and the height of the buoyant body can ensure that the top end of the second cylinder is located below the liquid surface of the thickener M.

[0032] With the change of the liquid level of the thickener M, the second cylinder floats in the vertical direction to ensure that the top end of the second cylinder is always located at a distance below the liquid surface of the thickener M.

[0033] Compared with the prior art, the thickener flocculant adding device provided by the present application can introduce the supernatant in the thickener M into the stand pipe 210, and introduce the flocculant into the stand pipe 210 through the branch pipe 230, mix the flocculant with the supernatant in the stand pipe 210, dilute the flocculant, and transport the diluted mixed liquid to the ore pulp feeding pipeline 100 to mix with the ore pulp under the action of the dilution pump 220, so that the mixing efficiency is high and the thickening effect is improved.

[0034] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application.

Claims

1. A thickener flocculant dosing device, characterized in that, The application relates to a thickener, which comprises: a slurry feeding pipeline, part of which is arranged in the thickener, one end of the slurry feeding pipeline being used for feeding slurry, and the other end being connected with a feeding well of the thickener; and a flocculant feeding pipeline, which comprises a vertical pipe, a dilution pump and a branch pipe, the bottom end of the vertical pipe being connected with the slurry feeding pipeline via the dilution pump, the top of the vertical pipe being located below the liquid level of the thickener, so that supernatant in the thickener overflows into the vertical pipe, one end of the branch pipe being used for feeding flocculant, and the other end being connected with the vertical pipe.

2. The thickener flocculant addition device of claim 1, wherein, The vertical pipe comprises a first straight pipe, a tapered pipe and a second straight pipe which are connected in sequence in the vertical direction, the side wall of the first straight pipe being connected with the branch pipe, the tapered pipe being gradually expanded in the vertical upward direction, and the dilution pump being arranged in the second straight pipe.

3. The thickener flocculant addition device of claim 1, wherein, The dilution pump comprises an impeller arranged in the vertical pipe and a motor arranged on the thickener, the output shaft of the motor extending into the vertical pipe and being connected with the impeller.

4. The thickener flocculant addition device of claim 1, wherein, The branch pipe is arranged in the tangential direction of the inner wall of the vertical pipe.

5. The thickener flocculant addition device of claim 1, wherein, The slurry feeding pipeline comprises a horizontal dilution pipe, which extends into the thickener and is connected with the side wall of the feeding well.

6. The thickener flocculant addition device of claim 1, wherein, The vertical pipe is arranged vertically.

7. The thickener flocculant addition device of claim 5, wherein, The flow direction of the fluid in the vertical pipe forms an acute angle with the flow direction of the fluid in the dilution pipe.

8. The thickener flocculant addition device of claim 1, wherein, The vertical pipe is a telescopic pipe with adjustable length.

9. The thickener flocculant addition device of claim 8, wherein, The vertical pipe comprises a first cylinder and a second cylinder, the bottom end of the first cylinder being connected with the slurry feeding pipeline via the dilution pump, and the first cylinder and the second cylinder being connected in the vertical direction and being sealed.

10. The thickener flocculant addition device of claim 9, wherein, The top end of the second cylinder is provided with a buoyant body.

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