• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A system for subjecting a slurry containing solids and a liquid and a flocculating agent to intense agitation so as to form the solids into relatively small and bead-like floccules which may be readily separated from the liquid in which they are contained.
    公开号:SU1540654A3
    申请号:SU864028076
    申请日:1986-08-18
    公开日:1990-01-30
    发明作者:Петерсон К.Линн
    申请人:Петерсон Филтерз Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to a method and apparatus for separating solids from fluids using flocculating agents, such as polymers, namely for separating solid fine-grained particles, having dimensions of about 28 mesh to zero, from fluids, such as waste from a coal preparation plant.
    The purpose of the invention is to increase the efficiency of the separation.
    Figure 1 shows a flowchart of a coal-cleaning plant; Fig. 2 shows a device for separating solids from a fluid, longitudinal section; in fig. J - the same, top view; figure 4 - pni-cut aa in figure 2.

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    The process plan of the coal preparation plant contains a conveyor 1 that moves the ore and dumping it on the sludge-free sieve 2, where it is divided into particles larger than 28 mesh and particles from 28 mesh to zero. A material larger than 28 mesh is fed to a jigging machine 3, in which water is used to separate the low ash angle from waste, such as stone, slate and high-eluting material to be removed. The separation is carried out by specific gravity, with coal floating on the surface of the sediment machine 3, and the waste going to the bottom. Low-ash coal is separated and fed to the dewatering screens 4, and then to the trolley 5. The waste is jH3 jigging machine 3 by the conveyor 6 and transported to the conveyor 7, where it is discharged into the loading hopper 8.
    A batch of ore from 28 mesh to zero is fed to the flotation cells 9, where low-ash coal from 28 mesh to zero is separated and fed to the filtering device 10. Water and fine-grained material are drained from the dewatering screen 4 and are also fed to the flotation cells 9. Dehydrated low-ash coal from 28 mesh to zero is transferred from the filtering device to agonnet 5. Waste from 28 mesh to zero is lowered to the bottom of the flotation cells 9 and transferred as a suspension to a thickener-cleaner 11. Condensed waste from 28 m Yes to zero is fed to the waste filter 12. A precipitate consisting of waste, from 28 mesh to zero, formed in the waste filter 12, is discarded to waste more than 28 mesh in size on conveyor 7 for filling into loading baker 8. Then the waste is dumped from loading bin 8 to trucks 13 and The waste rock 14 is dumped with bulldozers 15. The waste rock dump has an initial height of 12 inches (305 mm) and is then tamped down in a 4: 1 ratio to compact it and prevent accidental fire.
    I
    A device for separating solid
    the body from the fluid contains a reservoir 16 having an open top
    part 17, conical bottom 18 and side wall 19, which is preferably cylindrical. A rotating shaft 20 having blades 21 attached thereto forms an impeller. The shaft 20 is supported and rotated by a conventional device (not shown). The impeller preferably has four blades
    21, separated by 90 °, however, you can use the impeller having a different number of blades. The blades 21 are inclined relative to the vertical so that a part of the suspension in the reservoir 16, which is in contact with the blades 21, is subjected to a downward spiral force. However, in some cases, the blades are parallel to the vertical.
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    Through the side wall 19 in its upper part 17 passes the inlet pipe 22, which ends with an annular chute 23. From the chute 23, a plurality of tubes 24 go down, which have open ends adjacent to the wing and located above it. There are four tubes 24 spaced by 90, but as many tubes 24 as needed can be used within the scope of this invention.
    A slurry 25 containing solids to be separated from the fluid is introduced into the reservoir 16 through the inlet pipe.
    22, tray 23 and tubes 24. Above the open upper part 17 is the inlet pipe 26, which ends with an annular tray 27. From the tray 27, tubes 28, with nozzles 29 located at the open ends of the tubes 24 above the impeller blades 21, retract. There are four tubes 28 spaced by 90, but a different number of tubes 28 can be used (it must match the number 24). The flocculating agent 30, the liquid mixture of activated polymer is introduced into the tank 16 through the inlet pipe 26, the tray 27 and the tube 28. On the side wall
    19, a spillway 31 is disposed with a discharge pipe 32 for removing a clean drain from reservoir 16.
    Cone-shaped bottom 18 has a surface, the angle of which provides the movement of ball-shaped flakes down into the drain well 33.
    The discharge pipe 34 is used to discharge a slurry 35 containing ball pellets in a fluid from tank 16 through drain well 33 to an appropriate separator device, for example, waste filter 12. Scraper 36 is used to transfer slurry and ball-like flakes to drain well 33.
    The feed rate of the treated suspension 25 and the flocculating agent 30 relative to the rate of release of the clean drain and suspension 35 characterizes the level 37 of material in the tank 16.
    An apparatus for carrying out the method for separating solids from a fluid is as follows.
    The impeller rotates at a speed sufficient to produce a speed of about 300-600 feet per minute (1.5-3.0 m / s) at the ends of the blades. The processable suspension 25 is introduced into reservoir 16 through the open end of each tube 24 at a rate of about 400-600 gallons per minute (151-227 l / min) at a solids concentration of about 3-8 wt.%, Preferably about 4 wt.%. The treated slurry 25, containing flakes in the fluid, has a solids concentration of about 35-50 wt.%, Preferably about 40 wt.%. A flocculating agent containing a mixture of activated polymer with a concentration of less than 0.5 wt.%, Preferably about 0.03 wt.%, is introduced through the nozzle 29 of each tube 28. The activated polymer may be cationic, moderately anionic, anionic, or a mixture thereof. The rotation of the impeller and the speed of the suspension and the flocculating agent create a zone of intensive mixing, forming solid particles in the suspension into relatively small ball-shaped flakes that sink to the surface of the cone-shaped bottom 18. The discharge rate of the clarified liquid is 40-160 l / min per meter.
    权利要求:
    Claims (5)
    [1]
    1. Method for separating solids from fluid by continuous gravitational sedimentation in a tank-type clarifier tank, including controlled flow of the treated liquid and flocculating agent.
    five
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    followed by their mixing with a continuously rotating impeller with blades, adjustable discharge of clarified liquid by continuous overflow through the upper part of the tank and adjustable drainage of sediment from the bottom of the tank, characterized in that, in order to increase the separation efficiency, the flow of the treated liquid and flocculating agent into the zone of intense mixing is carried out continuously near the impeller above the blades, rotating at a speed of 1.5-3.0 m / s.
    [2]
    2. Method pop. 1, which differs in that the treated liquid is supplied at a rate of 151-227 l / min.
    [3]
    3. A method according to claims 1 and 2, characterized in that the concentration of the flocculating agent is less than 0.5% by weight, preferably 0.03%.
    [4]
    4. A method according to claims 1 to 3, characterized in that the rate of discharge of the clarified liquid is 40-160 l / min per 1 m 2.
    [5]
    5. A device for separating solids from a fluid medium containing a container with a bottom and a side wall, devices for controlled supply of the treated fluid and a flocculating agent, a device for the controlled removal of clarified liquid and sediment, placed in the upper and lower parts of the tank, respectively, an impeller with blades, placed in the central zone of the tank, a scraper for moving the sediment from the bottom of the tank, characterized in that, in order to increase the separation efficiency, the device for feeding the treated suspension is made An annular tray with tubes down and having open ends, and a flocculating agent feeding device made in the form of nozzles spaced apart from each other at the open ends of the tubes near the impeller above the blade, the impeller is mounted horizontally above the scraper to move the sediment from the bottom of the tank, and the blades of the impeller are located radially at a distance from the side walls of the tank.
    6. A device as claimed in claim 5, wherein the diameter of the scraper is smaller than the diameter of the impeller.
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    同族专利:
    公开号 | 公开日
    AU6153186A|1987-02-26|
    DK391986D0|1986-08-18|
    EP0213509A3|1989-01-18|
    ZW16486A1|1986-11-19|
    IN167754B|1990-12-15|
    ES2001873A6|1988-07-01|
    ZA866028B|1987-03-25|
    BR8603940A|1987-03-24|
    AU587271B2|1989-08-10|
    CN86105063A|1987-05-13|
    EP0213509A2|1987-03-11|
    JPS62110711A|1987-05-21|
    DK391986A|1987-02-20|
    KR870001854A|1987-03-28|
    IL79717D0|1986-11-30|
    KR900006074B1|1990-08-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB641964A|1941-12-08|1950-08-23|Infilco Inc|Improvements in or relating to apparatus and process for treating liquids|
    US4055494B1|1977-02-14|1987-02-10|
    US4273658A|1977-10-19|1981-06-16|Exxon Production Research Company|Thickener control process|
    IL58255A|1978-10-10|1982-09-30|Dorr Oliver Inc|Sedimentation apparatus|
    JPS5814910A|1981-07-20|1983-01-28|Kubota Ltd|Flocculating and precipitating method|
    IN169744B|1985-08-19|1991-12-14|Peterson Filters Corp|US5297260A|1986-03-12|1994-03-22|Hitachi, Ltd.|Processor having a plurality of CPUS with one CPU being normally connected to common bus|
    FR2863908B1|2003-12-22|2006-05-19|Otv Sa|FLOCCULATION TREATMENT PROCESS AND REACTOR|
    CN101538096B|2009-04-24|2011-04-06|司军|Method for processing waste slurry|
    KR101389687B1|2013-11-04|2014-04-25|김유학|Impeller for agitator and agitator for water treatment using the same|
    EP2886177A1|2013-12-20|2015-06-24|Rio Tinto Alcan International Limited|Settler and method for separating clarified liquid from mineral slurries|
    CN109011785B|2016-08-29|2020-08-04|江西兴淦医药科技有限公司|Liquid filter particle equipment|
    CN110292807B|2018-03-22|2022-01-25|南京梅山冶金发展有限公司|Concentration dehydration process for superfine tailings|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US76735185A| true| 1985-08-19|1985-08-19|
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