CN110732165A - system and method for improving processing capacity of thickener - Google Patents

system and method for improving processing capacity of thickener Download PDF

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Publication number
CN110732165A
CN110732165A CN201911172460.1A CN201911172460A CN110732165A CN 110732165 A CN110732165 A CN 110732165A CN 201911172460 A CN201911172460 A CN 201911172460A CN 110732165 A CN110732165 A CN 110732165A
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Prior art keywords
thickener
concentration
ore pulp
feeding
central
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CN201911172460.1A
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CN110732165B (en
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张云龙
李永亭
王有春
李莎
黄国罡
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Yantai Xinkuang Engineering Technology Service Co Ltd
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Yantai Xinkuang Engineering Technology Service Co Ltd
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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
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)

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, wherein the upper part in the thickener is provided with a central feeding cylinder, an outer feeding cylinder is arranged outside the central feeding cylinder, a feeding pipe of the cyclone is connected with the slurry pump, an overflow pipe of the cyclone is connected with a feeding port of a degassing groove, a feeding port of the degassing groove is connected with the upper part of the outer wall of the outer feeding cylinder through a low-concentration feeding pipe, and a bottom flow pipe of the cyclone is connected with the bottom of the outer wall of the central feeding cylinder through a high-concentration feeding pipe.

Description

system and method for improving processing capacity of thickener
Technical Field
The invention relates to systems for improving the treatment capacity of a thickener, and also relates to methods for improving the treatment capacity of the thickener, belonging to the technical field of thickeners.
Background
The thickener is a solid-liquid separation device based on gravity settling action, is usually a cylindrical shallow groove with a conical bottom built by using concrete, wood or metal welded plates as structural materials, can concentrate ore pulp with the solid weight of 10-20% into underflow ore pulp with the solid content of 45-55% through gravity settling, enables the thickened underflow ore pulp to be discharged from a bottom flow port at the bottom of the thickener, and generates cleaner clear liquor (overflow) at the upper part of the thickener to be 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 the pulp, the treatment capacity of the thickener needs to be improved, but under the condition that the external shape of the thickener is not changed, if the treatment capacity of the thickener is difficult to improve, can be realized by adding a flocculating agent or adding an inclined plate or an inclined pipe, the cost and the manufacturing cost are high, and the efficiency is low, so simple and low-cost systems for improving the treatment capacity of the thickener are needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides systems for improving the processing capacity of a thickener.
kinds of systems to improve the processing capacity of the thickener, wherein the system includes slurry pump, swirler and thickener;
the upper part in the thickener is provided with a central feeding barrel, an outer feeding barrel is arranged outside the central feeding barrel, and the central feeding barrel and the outer feeding barrel are fixed on an installation beam at the top of the thickener;
the feeding pipe of the cyclone is connected with a slurry pump, the overflow pipe of the cyclone is communicated with the feeding hole of the degassing groove, and the feeding hole of the degassing groove is communicated with the upper part of the outer wall of the outer feeding barrel through a low-concentration feeding pipe; the underflow pipe of the cyclone is communicated with the bottom of the outer wall of the central feed cylinder through a high-concentration feed pipe.
The invention has the beneficial effects that: the design is simple, and cost economy carries out the preseparation through increasing the swirler and handles to the ore pulp, falls into low concentration fine particle and high concentration coarse particle two parts to the ore pulp and subsides, lets the ore pulp of low concentration fine particle occupy the most space of thickener, has increased the settlement area of thickener, and high concentration coarse particle ore pulp subsides comparatively fast, occupies the finite space of thickener, and reasonable reposition of redundant personnel has improved the handling capacity of thickener.
On the basis of the technical scheme, the invention can also make the following improvements:
, arranging the central feeding barrel and the outer feeding barrel coaxially, arranging a pressing rake under the central feeding barrel and the outer feeding barrel, and arranging the central shaft of the pressing rake coaxially with the central feeding barrel and the outer feeding barrel, so that the operation process of the pressing cake in the thickener is more stable.
And , arranging a bottom flow port at the bottom of the cone bottom of the thickener, and arranging an overflow chute at the upper part of the outer wall of the thickener.
And , connecting the inlet end of the slurry pump with the pump box, and connecting the outlet end with the feed end of the cyclone.
The invention also discloses methods for improving the processing capacity of a thickener, which is characterized in that the system for improving the processing capacity of the thickener comprises the following steps:
, enabling the ore pulp to enter a cyclone from the slurry pump, and separating the ore pulp in the cyclone to separate the ore pulp into ore pulp with high-concentration coarse particles and ore pulp with low-concentration fine particles;
step two, discharging the ore pulp of the high-concentration coarse particles through an underflow pipe of a swirler, and then feeding the ore pulp into a central feeding barrel of a thickener through a high-concentration feeding pipe; discharging ore pulp of low-concentration fine particles from an overflow pipe of the cyclone, degassing in a degassing tank, and feeding the ore pulp into an external feeding barrel of a thickener through a low-concentration feeding pipe;
and step three, the ore pulp of low-concentration fine particles enters the thickener from the external feeding cylinder and occupies most space of the thickener, and is concentrated and settled under the action of a flocculating agent, the ore pulp of high-concentration coarse particles enters the central position of the thickener from the central feeding cylinder and is positioned in the center of the concentrated ore pulp of fine particles, and the step is carried out for concentration and settlement.
And , discharging the high-concentration ore pulp separated by the thickener from a bottom flow port of the thickener in the third step, and discharging the separated clarified liquid from an overflow groove of the thickener.
, the slurry enters the slurry pump from the pump box in step .
The working principle of the invention is as follows: the ore pulp enters a pump box and then enters a swirler through a slurry pump, the swirler carries out pre-separation treatment on the ore pulp, the ore pulp of low-concentration fine particles enters an external feed cylinder of the thickener from an overflow pipe of the swirler through a degassing groove and a low-concentration feed pipe, and the sedimentation speed of materials is increased after the flocculant is added due to the reduction of the concentration of the ore pulp of the fine particles at the moment, so that the treatment capacity of the thickener is improved; the ore pulp of the high-concentration coarse particles enters a central feeding barrel of the thickener from an underflow pipe of the cyclone through a high-concentration feeding pipe, the ore pulp of the high-concentration coarse particles directly enters the center of the thickener and enters the center of the concentrated ore pulp of the fine particles, because the particles in the ore pulp are thicker and the sedimentation speed is higher, and the heavy particles are added on the basis of flocculent concentrated ore pulp of the fine particles, the unit volume is unchanged, the weight is increased, and the ore pulp concentration 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 groove of the thickener.
The invention has the advantages that the principle is simple, the treatment capacity of the thickener is increased without changing the appearance of the thickener, the high-concentration coarse-particle ore pulp entering the thickener from the underflow pipe of the cyclone does not need to be added with a flocculating agent, the use amount of the flocculating agent is reduced, the underflow concentration of the thickener is improved, and the invention has broad prospects.
Drawings
Fig. 1 is a schematic flow chart of the operation of systems for increasing the throughput of a thickener.
The reference numbers are recorded as follows: 1-pump box, 2-slurry pump, 3-degassing tank, 4-central feeding barrel, 5-thickener, 6-overflow tank, 7-underflow port, 8-external feeding barrel, 9-swirler, 9.1-overflow pipe, 9.2-underflow pipe, 10-high concentration feeding pipe, 11-low concentration feeding pipe and 12-pressure cake.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in figure 1, system for improving the treatment capacity of a thickener is characterized by comprising a slurry pump 2, a cyclone 9 and the thickener 5, wherein a central feeding barrel 4 is arranged at the upper part in the thickener 5, an outer feeding barrel 8 is arranged outside the central feeding barrel 4, the central feeding barrel 4 and the outer feeding barrel 8 are fixed on a mounting beam at the top of the thickener 5, a feeding pipe of the cyclone 9 is connected with the slurry pump 2, an overflow pipe 9.1 of the cyclone 9 is communicated with a feeding hole of a degassing groove 3, a feeding hole of the degassing groove 3 is communicated with the upper part of the outer wall of the outer feeding barrel 8 through a low-concentration feeding pipe 11, and a bottom flow pipe 9.2 of the cyclone 9 is communicated with the bottom of the outer wall of the central feeding barrel 4 through a high-concentration feeding pipe 10.
The central feeding barrel 4 and the outer feeding barrel 8 are coaxially arranged; a press harrow 12 is arranged below the central feeding barrel 4 and the outer feeding barrel 8, and the central shaft of the press harrow 12 is arranged in the central feeding barrel 4 and is coaxial with the central feeding barrel 4 and the outer feeding barrel 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 feed end of the cyclone 9.
A method for increasing the processing capacity of a thickener, which is characterized in that the system for increasing the processing capacity of the thickener comprises the following steps:
step , enabling the ore pulp to enter a slurry pump 2 from a pump box 1, then entering a cyclone 9 from the slurry pump 2, and separating in the cyclone 9 to obtain ore pulp with high-concentration coarse particles and ore pulp with low-concentration fine particles;
step two, discharging the ore pulp of the high-concentration coarse particles through an underflow pipe 9.2 of a swirler 9, and then entering a central feeding cylinder 4 of a thickener 5 through a high-concentration feeding pipe 10; the ore pulp of low-concentration fine particles is discharged from an overflow pipe 9.1 of a swirler 9, enters a degassing groove 3 for degassing, and enters an external feeding cylinder 8 of a thickener 5 through a low-concentration feeding pipe 11;
and step three, feeding the low-concentration fine particle ore pulp into the thickener 5 from the external feed cylinder 8, occupying most space of the thickener 5, concentrating and settling under the action of a flocculating agent, feeding the high-concentration coarse particle ore pulp into the center of the thickener 5 from the central feed cylinder 4, locating at the center of the concentrated fine particle ore pulp, performing steps of concentration and settling, discharging the high-concentration ore pulp separated by the thickener 5 from a bottom flow port 7 of the thickener 5, and discharging the separated clarified liquid from an overflow groove 6 of the thickener 5.
The working principle of the embodiment is as follows: the ore pulp enters a pump box 1 and then enters a swirler 9 through a slurry pump 2, the swirler 9 carries out pre-separation treatment on the ore pulp, the ore pulp of low-concentration fine particles enters an external feed cylinder 8 of a thickener 5 through a degassing groove 3 and a low-concentration feed pipe 11 from an overflow pipe 9.1 of the swirler 9, the sedimentation speed of materials is increased after a flocculating agent is added due to the reduction of the concentration of the fine particle ore pulp at the moment, the treatment capacity of the thickener 5 is improved, the ore pulp of high-concentration coarse particles enters a central feed cylinder 4 of the thickener 5 through a rotational flow and a bottom flow pipe 9.2 of the swirler 9, the ore pulp of high-concentration coarse particles directly enters the center of the thickener 5 and enters the center of the concentrated ore pulp of fine particles, the particles in the ore pulp of the concentrated fine particles are thicker and have higher sedimentation speed, and heavy particles are added on the basis of flocculent ore pulp of the fine particles after concentration, 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 groove 6 of the thickener 5.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

  1. The system for improving the treatment capacity of the thickener is characterized by comprising a slurry pump (2), a swirler (9) and a thickener (5);
    the upper part in the thickener (5) is provided with a central feeding barrel (4), an external feeding barrel (8) is arranged outside the central feeding barrel (4), and the central feeding barrel (4) and the external feeding barrel (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), an overflow pipe (9.1) of the cyclone (9) is communicated with the feeding hole of the degassing groove (3), and the feeding hole of the degassing groove (3) is communicated with the upper part of the outer wall of the outer feeding barrel (8) through a low-concentration feeding pipe (11); an underflow pipe (9.2) of the cyclone (9) is communicated with the bottom of the outer wall of the central feed cylinder (4) through a high-concentration feed pipe (10).
  2. 2. The system for increasing the throughput of a thickener according to claim 1, wherein the central feed cylinder (4) is arranged coaxially with the outer feed cylinder (8).
  3. 3. The system for increasing the throughput of the thickener according to claim 2, wherein the central feeding barrel (4) and the outer feeding barrel (8) are provided with the press harrow (12), and the central shaft of the press harrow (12) is coaxial with the central feeding barrel (4) and the outer feeding barrel (8).
  4. 4. The system for increasing the treatment capacity of the thickener according to the claim 1, characterized in that 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 chute (6).
  5. 5. The system for improving the treatment capacity of the thickener according to the claim 1, characterized in that 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. A method for increasing the treatment capacity of a thickener according to , which is characterized in that the system for increasing the treatment capacity of the thickener according to any of the claims 1 to 5 and is utilized, and comprises the following steps:
    step , enabling the ore pulp to enter a cyclone (9) from the slurry pump (2), and separating in the cyclone (9) to obtain ore pulp with high-concentration coarse particles and ore pulp with low-concentration fine particles;
    step two, discharging the ore pulp of the high-concentration coarse particles through an underflow pipe (9.2) of a swirler (9), and then feeding the ore pulp into a central feeding barrel (4) of a thickener (5) through a high-concentration feeding pipe (10); the ore pulp of low-concentration fine particles is discharged from an overflow pipe (9.1) of a swirler (9), enters a degassing tank (3) for degassing, and then enters an outer feeding barrel (8) of a thickener (5) through a low-concentration feeding pipe (11);
    and step three, the low-concentration fine particle ore pulp enters the thickener (5) from the external feed cylinder (8) and occupies most space of the thickener (5), and is concentrated and settled under the action of a flocculating agent, the high-concentration coarse particle ore pulp enters the central position of the thickener (5) from the central feed cylinder (4) and is positioned at the center of the concentrated fine particle ore pulp, and the step is carried out for concentration and settlement.
  7. 7. The method for increasing the treatment capacity of the thickener according to the claim 6, characterized in that in the third step, the high-concentration ore 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 trough (6) of the thickener (5).
  8. 8. The method of increasing the capacity of a thickener according to claim 6, wherein the slurry enters the slurry pump (2) from the pump box (1) in step .
CN201911172460.1A 2019-11-26 2019-11-26 System and method for improving throughput of thickener Active CN110732165B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113856260A (en) * 2021-11-18 2021-12-31 中冶赛迪重庆信息技术有限公司 Concentration tank with rotational flow device

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CN113856260A (en) * 2021-11-18 2021-12-31 中冶赛迪重庆信息技术有限公司 Concentration tank with rotational flow device

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