CN110732165B - System and method for improving throughput of thickener - Google Patents
System and method for improving throughput of thickener Download PDFInfo
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- CN110732165B CN110732165B CN201911172460.1A CN201911172460A CN110732165B CN 110732165 B CN110732165 B CN 110732165B CN 201911172460 A CN201911172460 A CN 201911172460A CN 110732165 B CN110732165 B CN 110732165B
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- thickener
- cyclone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention relates to a system for improving the treatment capacity of a thickener, which is characterized by comprising a slurry pump, a cyclone and the thickener; the upper part in the thickener is provided with a central feeding cylinder, and the outside of the central feeding cylinder is provided with an outer feeding cylinder; the feeding pipe of the cyclone is connected with the slurry pump, the overflow pipe of the cyclone is connected with the feeding port of the degassing tank, and the feeding port of the degassing tank is connected with the upper part of the outer wall of the outer feeding barrel through the low-concentration feeding pipe; the underflow pipe of the cyclone is connected with the bottom of the outer wall of the central feeding cylinder through a high-concentration feeding pipe; and also relates to a method for improving the treatment capacity of the thickener by using the system. The invention has simple design and economic cost, divides ore pulp into two parts of low-concentration fine particles and high-concentration coarse particles for sedimentation, reasonably divides the flow, does not need to change the appearance of the thickener, increases the treatment capacity of the thickener, reduces the use amount of flocculant, and simultaneously improves the underflow concentration of the thickener, thereby having wide prospect.
Description
Technical Field
The invention relates to a system for improving the throughput of a thickener, and also relates to a method for improving the throughput of the thickener, belonging to the technical field of thickeners.
Background
The thickener is widely used in the mineral separation field as a main device for concentrating mineral pulp. The thickener is solid-liquid separation equipment based on gravity sedimentation, generally a cylindrical shallow groove with a cone bottom is built by taking concrete, wood or metal welding plates as structural materials, and ore pulp with the solid weight of 10% -20% can be concentrated into underflow ore pulp with the solid weight of 45% -55% through gravity sedimentation, so that the thickened underflow ore pulp is discharged from a bottom flow port at the bottom of the thickener, cleaner clarified liquid (overflow) is generated at the upper part of the thickener, and the clarified liquid is discharged from an annular overflow groove at the top.
In order to improve the working efficiency of the thickener and shorten the time for concentrating ore pulp, the treatment capacity of the thickener needs to be improved, but under the condition that the appearance of the thickener is not changed, if the treatment capacity of the thickener needs to be improved, the thickener is difficult to be improved, the thickener can be generally realized by adding a flocculating agent or adding an inclined plate or an inclined pipe, the cost and the manufacturing cost are higher, and the efficiency is lower. Thus, there is a need for a simple, low cost system for increasing thickener throughput.
Disclosure of Invention
The invention provides a system for improving the treatment capacity of a thickener, aiming at the defects existing in the prior art.
The technical scheme for solving the technical problems is as follows: a system for improving the throughput of a thickener, which is characterized by comprising a slurry pump, a cyclone and the thickener;
the upper part in the thickener is provided with a central feeding cylinder, an outer feeding cylinder is arranged outside the central feeding cylinder, and the central feeding cylinder and the outer feeding cylinder are fixed on an installation beam at the top of the thickener;
the feeding pipe of the cyclone is connected with the slurry pump, the overflow pipe of the cyclone is communicated with the feeding port of the degassing tank, and the feeding port of the degassing tank is communicated with the upper part of the outer wall of the outer feeding barrel through the low-concentration feeding pipe; the underflow pipe of the cyclone is communicated with the bottom of the outer wall of the central feeding cylinder through a high-concentration feeding pipe.
The beneficial effects of the invention are as follows: the design is simple, and cost is economical, carries out pre-separation treatment to ore pulp through increasing the swirler, and is divided into low concentration fine particle and high concentration coarse particle two parts subsides, lets the ore pulp of low concentration fine particle occupy the space of thickener most, has increased the subsidence area of thickener, and high concentration coarse particle ore pulp subsides relatively fast, occupies the limited space of thickener, and reasonable reposition of redundant personnel has improved the throughput of thickener.
Based on the technical scheme, the invention can also make the following improvements:
further, the central feeding cylinder and the outer feeding cylinder are coaxially arranged; the center feeding cylinder and the outer feeding cylinder are downwards provided with the pressing harrow, and the central shaft of the pressing harrow is coaxial with the center feeding cylinder and the outer feeding cylinder, so that the running process of the pressing cake in the thickener is more stable.
Further, a bottom flow port is arranged at the bottom of the cone bottom of the thickener, and an overflow groove is arranged at the upper part of the outer wall of the thickener.
Further, the inlet end of the slurry pump is connected with the pump box, and the outlet end of the slurry pump is connected with the feeding end of the cyclone.
The invention also discloses a method for improving the throughput of the thickener, which is characterized by comprising the following steps of:
step one, ore pulp enters a cyclone from a slag pulp pump, is separated in the cyclone, and is separated into ore pulp with high concentration coarse particles and ore pulp with low concentration fine particles;
step two, the ore pulp of the high-concentration coarse particles is discharged through a bottom flow pipe of the cyclone, and then enters a central feeding cylinder of the thickener through a high-concentration feeding pipe; the ore pulp with low concentration fine particles is discharged from an overflow pipe of the cyclone, enters a degassing tank for degassing, and enters an outer feeding cylinder of the thickener through a low concentration feeding pipe;
step three, ore pulp with low concentration fine particles enters a thickener from an outer feeding cylinder and occupies most space of the thickener, and is concentrated and settled under the action of a flocculating agent; the ore pulp with high concentration coarse particles enters the center position of the thickener from the center feeding cylinder and is positioned in the center of the concentrated ore pulp with fine particles, and the ore pulp is further concentrated and settled.
In the third step, the high-concentration ore pulp separated by the thickener is discharged from a bottom flow port of the thickener, and the separated clarified liquid is discharged from an overflow groove of the thickener.
Further, in the first step, the slurry is fed from the pump box to the slurry pump.
The working principle of the invention is as follows: the ore pulp enters a pump box and then enters a cyclone through a slurry pump, the ore pulp is pre-separated by the cyclone, the ore pulp with low concentration fine particles enters an outer feeding cylinder of the thickener from an overflow pipe of the cyclone through a degassing tank and a low concentration feeding pipe, and the sedimentation speed of materials is increased after flocculant is added due to the fact that the concentration of the fine particle ore pulp is reduced at the moment, and the treatment capacity of the thickener is improved; the high-concentration coarse-particle ore pulp enters a central feeding cylinder of a thickener from an underflow pipe of a cyclone through a high-concentration feeding pipe, the high-concentration coarse-particle ore pulp directly enters the center of the thickener and enters the center of concentrated fine-particle ore pulp, and because the particles in the ore pulp are coarser, the sedimentation speed is faster, and heavy particles are added on the flocculent basis after the fine-particle ore pulp is concentrated, the unit volume is unchanged, the weight is increased, and the concentration of the ore pulp of the underflow of the thickener is improved; the high-concentration ore pulp separated by the thickener is discharged from a bottom flow port of the thickener, and the separated clarified liquid is discharged from an overflow tank of the thickener.
The invention has the advantages that: the principle is simple, the appearance of the thickener is not required to be changed, the treatment capacity of the thickener is increased, the flocculating agent is not required to be added into the ore pulp with high concentration coarse particles entering the thickener from the underflow pipe of the cyclone, the use amount of the flocculating agent is reduced, the underflow concentration of the thickener is improved, and the thickener has a broad prospect.
Drawings
FIG. 1 is a schematic workflow diagram of a system for increasing thickener throughput.
The reference numerals are recorded as follows: 1-pump box, 2-slurry pump, 3-degasification groove, 4-center feed cylinder, 5-thickener, 6-overflow tank, 7-underflow port, 8-outer feed cylinder, 9-cyclone, 9.1-overflow pipe, 9.2-underflow pipe, 10-high concentration feed pipe, 11-low concentration feed pipe, 12-pressure cake.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, a system for improving the throughput of a thickener is characterized by comprising a slurry pump 2, a cyclone 9 and a thickener 5; the upper part in the thickener 5 is provided with a central feeding cylinder 4, an outer feeding cylinder 8 is arranged outside the central feeding cylinder 4, and the central feeding cylinder 4 and the outer feeding cylinder 8 are fixed on an installation beam at the top of the thickener 5; the feeding pipe of the cyclone 9 is connected with the slurry pump 2, the overflow pipe 9.1 of the cyclone 9 is communicated with the feeding port of the degassing tank 3, and the feeding port of the degassing tank 3 is communicated with the upper part of the outer wall of the outer feeding barrel 8 through the low-concentration feeding pipe 11; the underflow pipe 9.2 of the cyclone 9 communicates with the bottom of the outer wall of the central feed cylinder 4 via a high-concentration feed pipe 10.
The central feeding cylinder 4 and the outer feeding cylinder 8 are coaxially arranged; the center feeding cylinder 4 and the outer feeding cylinder 8 are provided with a pressing harrow 12, and the central shaft of the pressing harrow 12 is arranged in the center feeding cylinder 4 and is coaxial with the center feeding cylinder 4 and the outer feeding cylinder 8; the bottom of the cone bottom of the thickener 5 is provided with a bottom flow port 7, and the upper part of the outer wall of the thickener 5 is provided with an overflow groove 6; the inlet end of the slurry pump 2 is connected with the pump box 1, and the outlet end is connected with the feeding end of the cyclone 9.
A method of increasing throughput of a thickener, using a system for increasing throughput of a thickener as described above, comprising the steps of:
step one, ore pulp enters a slag pulp pump 2 from a pump box 1, then enters a cyclone 9 from the slag pulp pump 2, is separated in the cyclone 9, and is separated into ore pulp with high concentration coarse particles and ore pulp with low concentration fine particles;
step two, the ore pulp of the high-concentration coarse particles is discharged through an underflow pipe 9.2 of the cyclone 9 and then enters a central feeding cylinder 4 of the thickener 5 through a high-concentration feeding pipe 10; the ore pulp with low concentration fine particles is discharged from an overflow pipe 9.1 of the cyclone 9, enters a degassing tank 3 for degassing, and enters an outer feeding cylinder 8 of the thickener 5 through a low concentration feeding pipe 11;
step three, feeding ore pulp with low concentration fine particles into a thickener 5 from an outer feeding cylinder 8 and occupying most space of the thickener 5, and concentrating and settling under the action of a flocculating agent; the ore pulp with high concentration and coarse particles enters the center position of the thickener 5 from the center feeding cylinder 4 and is positioned in the center of the concentrated ore pulp with fine particles, and the ore pulp is further concentrated and settled; the high-concentration ore pulp separated by the thickener 5 is discharged from a bottom flow port 7 of the thickener 5, and the separated clarified liquid is discharged from an overflow tank 6 of the thickener 5.
The working principle of the embodiment is as follows: the pulp enters the pump box 1 and then enters the cyclone 9 through the pulp pump 2, the cyclone 9 pre-separates the pulp, the pulp with low concentration fine particles enters the outer feeding cylinder 8 of the thickener 5 from the overflow pipe 9.1 of the cyclone 9 through the degassing tank 3 and the low concentration feeding pipe 11, the sedimentation velocity of the material is increased after the flocculant is added because the concentration of the pulp with fine particles is reduced at the moment, the treatment capacity of the thickener 5 is improved, the pulp with high concentration coarse particles enters the central feeding cylinder 4 of the thickener 5 from the cyclone, the pulp with high concentration coarse particles directly enters the center of the thickener 5 through the high concentration feeding pipe 10, the pulp with high concentration coarse particles enters the center of the pulp with fine particles after concentration, and the sedimentation velocity is relatively high because the particles in the pulp are relatively coarse, and the heavy particles are added on the basis of flocculent after the pulp with fine particles are concentrated, the pulp density of the unit volume is unchanged, the weight is increased, and the pulp concentration of the underflow of the thickener is improved; the high-concentration ore pulp separated by the thickener 5 is discharged from a bottom flow port 7 of the thickener 5, and the separated clarified liquid is discharged from an overflow tank 6 of the thickener 5.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A method of increasing the throughput of a thickener, characterized in that it relies on a system for increasing the throughput of a thickener, said system comprising a slurry pump (2), a cyclone (9) and a thickener (5); the upper part in the thickener (5) is provided with a central feeding cylinder (4), an outer feeding cylinder (8) is arranged outside the central feeding cylinder (4), and the central feeding cylinder (4) and the outer feeding cylinder (8) are fixed on a mounting cross beam at the top of the thickener (5);
the feeding pipe of the cyclone (9) is connected with the slurry pump (2), the overflow pipe (9.1) of the cyclone (9) is communicated with the feeding port of the degassing tank (3), and the feeding port of the degassing tank (3) is communicated with the upper part of the outer wall of the outer feeding barrel (8) through the low-concentration feeding pipe (11); the underflow pipe (9.2) of the cyclone (9) is communicated with the bottom of the outer wall of the central feeding cylinder (4) through a high-concentration feeding pipe (10);
the method comprises the following steps:
step one, ore pulp enters a cyclone (9) from a slag pulp pump (2), and is separated in the cyclone (9) into ore pulp with high concentration coarse particles and ore pulp with low concentration fine particles;
step two, the ore pulp of the high-concentration coarse particles is discharged through an underflow pipe (9.2) of the cyclone (9) and then enters a central feeding cylinder (4) of the thickener (5) through a high-concentration feeding pipe (10); the ore pulp with low concentration fine particles is discharged from an overflow pipe (9.1) of the cyclone (9), enters a degassing tank (3) for degassing, and enters an outer feeding cylinder (8) of the thickener (5) through a low concentration feeding pipe (11);
step three, ore pulp with low concentration fine particles enters a thickener (5) from an outer feeding cylinder (8) and occupies most space of the thickener (5), and is concentrated and settled under the action of a flocculating agent; the ore pulp with high concentration and coarse particles enters the center position of the thickener (5) from the center feeding cylinder (4) and is positioned at the center of the concentrated ore pulp with fine particles, and the ore pulp is further concentrated and settled.
2. A method for increasing throughput of a thickener according to claim 1, wherein the central feed cylinder (4) is arranged coaxially with the outer feed cylinder (8).
3. The method for improving the throughput of the thickener according to claim 2, wherein a pressing rake (12) is arranged below the central feeding cylinder (4) and the outer feeding cylinder (8), and the central shaft of the pressing rake (12) is coaxial with the central feeding cylinder (4) and the outer feeding cylinder (8).
4. The method for improving the throughput of the thickener according to claim 1, wherein the bottom of the cone bottom of the thickener (5) is provided with a bottom flow port (7), and the upper part of the outer wall of the thickener (5) is provided with an overflow groove (6).
5. The method for improving the throughput of the thickener according to claim 1, wherein the inlet end of the slurry pump (2) is connected with the pump box (1), and the outlet end is connected with the feeding pipe of the cyclone (9).
6. The method according to claim 4, wherein in the third step, the high-concentration pulp separated by the thickener (5) is discharged from the bottom flow port (7) of the thickener (5), and the separated clarified liquid is discharged from the overflow tank (6) of the thickener (5).
7. The method of claim 5, wherein in step one, the slurry is fed from the tank (1) to the slurry pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911172460.1A CN110732165B (en) | 2019-11-26 | 2019-11-26 | System and method for improving throughput of thickener |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911172460.1A CN110732165B (en) | 2019-11-26 | 2019-11-26 | System and method for improving throughput of thickener |
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| CN110732165A CN110732165A (en) | 2020-01-31 |
| CN110732165B true CN110732165B (en) | 2023-09-29 |
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| CN113856260B (en) * | 2021-11-18 | 2022-08-30 | 中冶赛迪信息技术(重庆)有限公司 | Concentration tank with rotational flow device |
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