CN215232291U - Thickener system - Google Patents

Abstract

The utility model discloses a thickener system, which comprises a thickener, wherein the thickener comprises a cylinder body, an overflow weir arranged at the top of the cylinder body, an overflow groove arranged outside the overflow weir, a foam overflow port arranged on the overflow weir, and a chute communicated with the foam overflow port; the slurry enters a thickener, and is thickened to obtain concentrated underflow, overflow liquid and foam, the foam overflows from a foam overflow port to a chute, and the overflow liquid flows into an overflow groove from a through hole. The utility model provides a thickener system highly changes the local reduction of thickener overflow weir into the foam overflow mouth, changes the overflow mode, has increased foam overflow speed, and the foam can in time be got rid of, has reduced the foam and has become salt probability at the overflow weir, reduces the foam enrichment, improves the separation effect of foam, guarantees the normal flow of overflow liquid.

Description

Thickener system

Technical Field

The utility model relates to a thickener equipment technical field especially relates to a thickener system of separation foam.

Background

In the production process of sylvite, a thickener is commonly used for concentrating materials, after slurry enters the thickener, the materials are concentrated through solid-liquid separation under the action of gravity to obtain overflow liquid floating on the top of the thickener and concentrated underflow deposited at the bottom of the thickener, and if the slurry contains foam, the foam can float on the liquid level of the overflow liquid.

The existing thickener is provided with an annular overflow weir at the top, overflow liquid overflows from the overflow weir in a large area to remove foam, but the retention time is long when the flow rate of the foam is low, the foam is very easy to salt at the overflow weir, the overflow resistance is increased, the overflow liquid overflows from the overflow weir and is not smooth to cause foam enrichment, the normal flow of the overflow liquid is influenced, and the foam is doped in the overflow liquid and can also influence the quality of the overflow liquid.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thickener system is in order to solve among the prior art not smooth problem that leads to foam enrichment, influence overflow liquid quality of foam overflow in the thickener.

In order to achieve the above object, the present invention provides the following technical solutions: a thickener system comprises a thickener, the thickener comprises a cylinder, an overflow weir arranged at the top of the cylinder, an overflow groove arranged at the outer side of the overflow weir, a foam overflow port arranged on the overflow weir, and a chute communicated with the foam overflow port, a plurality of through holes are arranged on the overflow weir, the through holes are communicated with the overflow groove, and the foam overflow port is formed by sinking from the top to the bottom of the overflow weir;

and the slurry enters the thickener, and is thickened to obtain concentrated underflow deposited at the bottom of the cylinder, overflow liquid floating on the top of the cylinder and foam floating on the overflow liquid, wherein the foam overflows from the foam overflow port to the chute, and the overflow liquid flows into the overflow groove from the through hole.

Further, the chute is tapered.

Further, the chute is arranged obliquely.

Further, the chute comprises a pair of side plates connected with the side walls of the overflow weir and a bottom plate arranged between the side plates.

Further, the thickener system also comprises a foam groove communicated with the chute, and a water pipe is arranged on the foam groove.

Further, the through hole is positioned on the overflow weir at a position lower than the foam overflow port.

Further, when the overflow weir is circular, the foam overflow port is 1/25-1/10 of the perimeter of the overflow weir.

Further, the thickener is provided with a stirring device, the stirring device comprises a stirring shaft, a rake frame and a motor which are arranged in the cylinder body, one end of the stirring shaft is connected with the rake frame, the other end of the stirring shaft is connected with the motor, the thickener comprises a scraper which is arranged on the stirring shaft, and the scraper scrapes the foam to the foam overflow port.

Further, the overflow launder is communicated with a salt pan through a pipeline.

Compared with the prior art, the utility model provides a thickener system has following advantage:

the utility model provides a thickener system highly changes the local of thickener overflow weir into the foam overflow mouth with reducing, changes the overflow mode, has increased foam overflow speed, and the foam can in time be got rid of, has reduced the foam and at overflow weir salt deposition probability, reduces the foam enrichment, improves the separation effect of foam, guarantees the normal flow of overflow liquid, and the foam of doping in overflow liquid still less has improved the quality of overflow liquid, simple high efficiency, energy-concerving and environment-protective.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:

fig. 1 is a schematic structural diagram of a thickener system according to a preferred embodiment of the present invention.

FIG. 2 is a partial side view of a chute of the thickener system shown in FIG. 1;

fig. 3 is a schematic view of the structure of a through-hole in the thickener system shown in fig. 1.

Reference numerals:

1 thickener, 11 cylinder, 12 overflow weir, 121 through hole, 13 overflow groove, 14 foam overflow port, 15 chute, 151 side plate, 152 bottom plate, 16 bracket, 17 stirring device, 171 stirring shaft, 172 harrow rack, 173 motor, 18 scraper, foam groove 2 and water pipe 21.

Detailed Description

The present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific examples described in the following embodiments of the present invention are merely illustrative of specific embodiments of the present invention and do not constitute limitations on the scope of the invention.

The invention is further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a thickener system according to a preferred embodiment of the present invention; FIG. 2 is a partial side view of a chute of the thickener system shown in FIG. 1.

The thickener system provided by this embodiment is applied to the treatment of the tail salt in the process of producing potassium chloride by the reverse flotation-cold crystallization method, and of course, may also be applied to other processes that require thickening of slurry with foam.

The thickener system comprises a thickener 1, wherein the thickener 1 comprises a cylinder 11, an overflow weir 12 arranged at the top of the cylinder 11, an overflow groove 13 arranged at the outer side of the overflow weir 12, a foam overflow port 14 arranged on the overflow weir 12, and a chute 15 communicated with the foam overflow port 14, a plurality of through holes 121 are arranged on the overflow weir 12, the through holes 121 are communicated with the overflow groove 13, and the foam overflow port 14 is formed by sinking from the top to the bottom of the overflow weir 12;

the slurry enters the thickener 1, and is thickened to obtain a concentrated underflow deposited at the bottom of the cylinder 11, an overflow liquid floating at the top of the cylinder 11, and froth floating on the overflow liquid, wherein the froth overflows from the froth overflow port 14 to the chute 15, and the overflow liquid flows into the overflow groove 13 from the through hole 121.

The application provides a thickener system highly changes the local reduction of thickener overflow weir into the foam overflow mouth, changes the overflow mode, has increased foam overflow speed, and the foam can in time be got rid of, has reduced the foam and has become salt probability at the overflow weir, reduces the foam enrichment, improves the separation effect of foam, guarantees the normal flow of overflow liquid, and the foam of doping in overflow liquid still less has improved the quality of overflow liquid, and is simple high-efficient, energy-concerving and environment-protective.

The thickener 1 is a solid-liquid separation device based on gravity settling effect, slurry enters the thickener 1, solid-phase particles in the slurry gradually and freely settle towards the bottom of the thickener 1 due to the self gravity effect, so that solid-liquid separation is realized, material concentration is realized, and concentrated underflow deposited at the bottom, overflow liquid floating at the top and foam floating on the overflow liquid are obtained.

The cylinder 11 is the main structure of the thickener 1 and plays a role in accommodating and supporting.

The thickener 1 is provided with a bracket 16 outside the cylinder 11 to provide further support for the cylinder 11.

As shown in fig. 2, the overflow weir 12 is located at the top of the cylinder 11, and is annular, and the top is flat or serrated; the overflow groove 13 is arranged on the outer side of the overflow weir 12, and the overflow groove 13 is communicated with the salt pan through a pipeline.

As shown in fig. 3, fig. 3 is a schematic structural view of a through hole in the thickener system shown in fig. 1.

The through hole 121 is located on the overflow weir 12 at a position lower than the foam overflow port 14. Specifically, the through holes 121 are uniformly distributed on the side wall of the overflow weir 12 lower than the foam overflow port 14, so that foam is prevented from entering the overflow groove 13 through the through holes 121, and the separation effect of foam and overflow liquid is ensured. The through hole 121 is a circular hole of 10-15cm, and of course, the through hole 121 may be a through hole of other size and other shape.

The overflow groove 13 is used for receiving overflow liquid and further leading the overflow liquid into a salt pan,

in this embodiment, the slurry is a tail salt slurry of a reverse flotation-cold crystallization process, the concentrated overflow liquid is a potassium-containing mother liquid, and the potassium-containing mother liquid can be solarized in a salt pan to obtain carnallite as a raw material for producing a potassium fertilizer.

The foam overflow port 14 is formed by locally reducing the height of the overflow weir 12, that is, the foam overflow port 14 is formed by sinking from the top to the bottom of the overflow weir 12, the size of the foam overflow port 14 is related to the slurry inflow speed and the thickening requirement, if the foam overflow port 14 is too small, the foam overflow speed is still slow, and if the foam overflow port 14 is too large, part of overflow liquid can overflow along with the foam overflow port, which causes waste of resources.

In this embodiment, the overflow weir 12 is circular and the froth overflow port 14 is 1/25-1/10 of the perimeter of the overflow weir 12.

The thickener 1 is provided with a stirring device 17, the stirring device 17 comprises a stirring shaft 171, a rake 172 and a motor 173 which are arranged in the cylinder 11, one end of the stirring shaft 171 is connected with the rake 172, the other end of the stirring shaft is connected with the motor 173, the thickener 1 comprises a scraper 18 which is arranged on the stirring shaft 171, and the scraper 18 scrapes the foam to the foam overflow port 14.

Driven by the motor 173, the stirring shaft 171 drives the rake 172 to rotate at a slow speed, and a concentrated underflow with a certain concentration is deposited downwards and flows out of the thickener 1 through a pipeline; the scraper 18 rotates along with the stirring shaft 171 synchronously to scrape the foam to the foam overflow port 14.

The concentrated bottom flow can be used as a raw material for producing soda ash after being washed by adding water or directly added with water to dissolve to prepare a sodium solvent to be injected into a mining area, so that low-grade solid potassium ore in the mining area is dissolved, and the dissolved mother liquor can be used as raw halogen for producing potassium fertilizer.

The chute 15 is a foam outflow channel and is obliquely arranged, so that foam can flow automatically; the chute 15 is tapered, specifically, the chute 15 may be tapered with a large upper part and a small lower part, and the area of the joint with the foam overflow port 14 is large, so that the overflow speed of the foam is increased.

As shown in fig. 2, the chute 15 includes a pair of side plates 151 connected to the side walls of the weir 12, and a bottom plate 152 disposed between the side plates 151. The side plate 151 and the bottom plate 152 form a foam outflow channel, and are isolated from the overflow groove 13, so that the foam and the overflow liquid are prevented from being mixed again, and the quality of the overflow liquid is ensured.

The thickener system also comprises a foam groove 2 communicated with the chute 15, and a water pipe 21 is arranged on the foam groove 2.

The water pipe 21 provides fresh water, the foam collected in the foam tank 2 is washed by adding water to serve as a soda raw material or directly added with water to prepare a sodium solvent to be injected into a mining area, low-grade solid potassium ore in an ore area is dissolved, and the dissolved mother liquor can be used as raw halogen for producing potassium fertilizer.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim.

Claims (9)

1. The thickener system is characterized by comprising a thickener (1), wherein the thickener (1) comprises a cylinder (11), an overflow weir (12) arranged at the top of the cylinder (11), an overflow chute (13) arranged at the outer side of the overflow weir (12), a foam overflow port (14) arranged on the overflow weir (12) and a chute (15) communicated with the foam overflow port (14), wherein the overflow weir (12) is provided with a plurality of through holes (121), the through holes (121) are communicated with the overflow chute (13), and the foam overflow port (14) is formed by sinking from the top to the bottom of the overflow weir (12);

the slurry enters the thickener (1) and is thickened to obtain a concentrated underflow deposited at the bottom of the cylinder body (11), an overflow liquid floating on the top of the cylinder body (11) and foam floating on the overflow liquid, the foam overflows from the foam overflow port (14) to the chute (15), and the overflow liquid flows into the overflow groove (13) from the through hole (121).

2. A thickener system according to claim 1, wherein the chute (15) is conical.

3. A thickener system according to claim 1, wherein the chute (15) is arranged obliquely.

4. A thickener system according to claim 1 wherein the trough (15) comprises a pair of side plates (151) connected to the side walls of the weir (12), a bottom plate (152) disposed between the side plates (151).

5. A thickener system according to claim 1, further comprising a foam tank (2) communicating with the chute (15), wherein a water pipe (21) is provided on the foam tank (2).

6. A thickener system according to claim 1, wherein the through hole (121) is located on the overflow weir (12) at a position lower than the foam overflow (14).

7. A thickener system according to claim 1, wherein the froth overflow (14) is 1/25-1/10 of the perimeter of the weir (12) when the weir (12) is circular.

8. A thickener system according to claim 1, wherein the thickener (1) is provided with a stirring device (17), the stirring device (17) comprises a stirring shaft (171), a rake (172) and a motor (173) which are arranged in the barrel (11), one end of the stirring shaft (171) is connected with the rake (172) and the other end is connected with the motor (173), the thickener (1) comprises a scraper (18) which is arranged on the stirring shaft (171), and the scraper (18) scrapes the foam towards the foam overflow port (14).

9. A thickener system according to any of claims 1 to 8, wherein the overflow launder (13) communicates with the salt pan by means of a pipe.

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