US3378141A - Froth flotation apparatus - Google Patents

Froth flotation apparatus Download PDF

Info

Publication number
US3378141A
US3378141A US354026A US35402664A US3378141A US 3378141 A US3378141 A US 3378141A US 354026 A US354026 A US 354026A US 35402664 A US35402664 A US 35402664A US 3378141 A US3378141 A US 3378141A
Authority
US
United States
Prior art keywords
rotor
cell
bars
vessel
froth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US354026A
Other languages
English (en)
Inventor
Warman Charles Harold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Research and Development Pty Ltd
Original Assignee
Research and Development Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU28944/63A external-priority patent/AU275207B2/en
Application filed by Research and Development Pty Ltd filed Critical Research and Development Pty Ltd
Application granted granted Critical
Publication of US3378141A publication Critical patent/US3378141A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1462—Discharge mechanisms for the froth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1493—Flotation machines with means for establishing a specified flow pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/245—Injecting gas through perforated or porous area

Definitions

  • Flotation processes are widely used for the concentration of ores and operate by mixing air as bubbles with a pulp in which the ore in a subdivided solid form is maintained in suspension, the pulp having been conditioned in such a manner that a certain component or certain components of the ore adhere and are concentrated in the air-water bubble interfaces and are removed in the froth formed above the pulp by the upward settling of the bubbles, the froth overflowing a weir with or without the assistance of a paddle or scraper.
  • One of the chief objects of this invention is to reverse this normal flow pattern by impelling the air-liquid mixture downwardly from the mixing zone thereby increasing the length of the path and the contact of the air bubbles with the pulp or solution before they are liberated at the surface thereof.
  • the mixture can be constrained to flow on the bottom of the vessel or cell to the sidewalls thereof before turning upwards towards the surface of the liquid thereby greatly extending the path of the air bubbles and keeping them in extended turbulent contact with the pulp or solution.
  • Another object is to provide relatively quiescent conditions at the surface of 3,373,141 Patented Apr. 16, 1968 the pulp or solution for bubble separation whilst yet employing high energy intensity in the mixing and contacting regions and this objective is attained by impelling the mixture downwardly against the bottom of the vessel or cell as described.
  • a further objective is to enable pulps containing relatively coarse solid particles to be treated, especially in the flotation process.
  • Yet another object of the invention is to distribute the air-liquid mixture from the mixing means in as uniform a manner as possible towards the outer limits of the vessel or cell and so enable maximum intensity of mixing and turbulent contact to be employed with the maintenance of a quiescent bubble separating zone above.
  • this invention provides a system of curved bafiles arranged in a lobed arcuate pattern and attached to the bottom of the vessel or cell.
  • this invention For mixing the air with the pulp or solution this invention provides a rotor mounted for rotation about a substantially vertical axis and provided with inclined surfaces whereby pulp or solution surrounding the rotor is mixed with the air from an axial zone circumferentially delimited and maintained substantially free of liquid by the movement of the inclined surfaces which also serve to impel the resulting air-liquid mixture downwardly.
  • Air is conducted to the axial zone by a passage or passages in or a conduit or conduits attached to the shaft which rotatably supports the rotor.
  • the inclined surfaces are provided by inclined rotor bars attached at their upper ends to a disc or boss attached to the vertical shaft supporting the rotor.
  • the axes of the rotor bars may be straight or curved and downwardly the rotor bars may diverge away from the axis of rotation of the rotor. Downwardly the rotor bars may increase in cross-sectional area.
  • the rotor bars are of circular crosssection downwardly increasing in diameter or are any of various blade, vane or elliptical cross-sections of downwardly increasing dimensions and the axes of the bars are straight and downwardly slope in a direction opposite to the direction of rotation of the rotor, the bars being symmetrically disposed with respect to the axis of rotation of the rotor and at a minimum radial distance from the axis adjacent their upper ends where they are attached to the rotor disc or boss. So constructed the rotor is of downwardly increasing outside diameter and its peripheral velocity when rotating likewise increases downwardly causing a downward pumping action on the fluid supplementing the impelling action of the individual inclined bars.
  • the inclination of the bars may vary to suit differing applications but a typical inclination is 45
  • the characteristics of the rotor performance may be modified.
  • an inclination from the vertical at which the downward impelling effect on the liquid is a maximum.
  • a reduction from this inclination decreases the downward impelling effect in absolute terms and also relatively to the rate at which air is mixed, assuming the tip speed of the rotor bars and the pressure of the air relative to that of the liquid surrounding the rotor remain unchanged, and hence the ratio of air to liquid in the mixture leaving the rotor increases.
  • the power absorbed, air mixing rate and mixture fiow rate are functions of the speed of rotation and the pressure of the air relative to that of the liquid surrounding the rotor and it is a feature of this invention to control the power input, air mixing rate and mixture flow rate by varying the rotor speed and/or the pressure of the air relative to that of the liquid surrounding the rotor.
  • a feature of this invention is the provision of convenient means for detaching and replacing the elements of the rotor that may be subject to wear in operation or for modifying its performance.
  • the rotor bars may be provided at their upper ends with tapered portions upwardly divergent and adapted to fit and be self holding by friction in sockets, or in inserts therein, of complementary shape in the rotor disc or boss.
  • the rotor bars may also 'be provided with replaceable covers of wear and/or corrosion resisting material.
  • the rotor disc or boss may be provided with a downwardly divergent conical bore adapted to fit and be self holding on a corresponding conical surface on the shaft. So constructed worn parts may be readily removed and replaced and rotor bars of different form, spacing, number and inclination can be fitted to provide various combinations of rotor characteristics to suit a wide range of process requirements.
  • this invention For removal of the froth from above the surface of the pulp or solution this invention provides a horizontal paddle actuated from above by oscillating arms and hangers to describe a flattened elliptical transverse motion whereby on the lower portion thereof the froth is pushed towards and caused to overflow a horizontal weir by which it is separated from the pulp or solution.
  • FIG. 1 is an axial section of a cell of a flotation machine adapted to perform the process according to the invention
  • FIG. 2 is a sectional plan on the line AA of FIG. 1;
  • FIG. 3 is a sectional elevation on the line BB of FIG. 2;
  • FIGS. 4 and 5 are plan views of variant forms of rotor
  • FIG. 6 is an elevation on the line CC of FIG. 4;
  • FIG. 7 is a sectional view of a replaceable metal rotor bar.
  • FIG. 8 is a sectional view on line EE of FIG. 5.
  • a rotor mounted on a hollow vertical shaft 2 for clockwise rotation (as viewed in plan) and submerged in a pulp or solution 3 contained in a cell 4 and having an upper free surface 5 through which the shaft 2 passes.
  • the cell 4 is provided with a longitudinal hollow member 6 which mounts the driving motor 7 and the shaft and bearing assembly 8 which rotatably supports and locates the hollow vertical rotor shaft 2.
  • a belt and pulley drive 9 of any suitable form is arranged to transmit power from the motor shaft assembly to rotate the rotor at any given predetermined speed.
  • the upper portion of the hollow rotor shaft 2 is provided with a plurality of holes 10 in the wall thereof through which air may pass from the annular space around the shaft enclosed by the housing 11 attached upwardly to the underside of the bearing assembly 8 and having at its lower end a labyrinth seal 12 disposed with close running clearance around the shaft 2 adjacrent below the holes 10.
  • the housing 11 incorporates a twoway air control valve 13 which admits air to the housing at a controlled rate either from the atmosphere through the port 14- or via port 15 and piping 16 from the hollow member or manifold 6 which may be supplied with air or other gas at above atmospheric pressure by a fan or other suitable means.
  • the shaft 2 At its lower end the shaft 2 has externally a downwardly divergent conical surface 17 which is self-holding and self-driving in a corresponding conical bore 18 in the boss 19 of the rotor disc 20. Attached to the disc at their upper ends are the equally spaced rotor bars 21 which, in the form of rotor depicted, are straight and downwardly sloped at 45 in a direction opposite to the direction of rotation of the rotor. As shown in FIGS. 4 and 5 the axes 22.
  • FIGS. 4 and 6 illustrate rotors in which the rotor bars shaped in cross-section as shown at 25 are integral with the rotor disc 20.
  • the figures illustrate rubber covered metal construction.
  • metal rotor core bars 26 are cast integral with the metal disc reinforcing member 27 and a moulded rubber covering 28 is bonded to and entirely covers the metal reinforcement with rubber thickness so disposed that all parts of the rotor have approximately the same wear life cpectancy.
  • FIG. 5 rotors with detachable rubber covered bars for which the rubber covered metal rotor disc 20 is provided with tapered upwardly divergent sockets 29 adapted to receive tapered inserts or eollets 30 constructed in halves and of any suitable material such as a plastic of suitable rigidity and wear resistance outwardly conforming to the sockets 29 and internally shaped to conform with the upper ends of the detachable rotor bars.
  • FIG. 7 illustrates in a section a construction suitable for the attachment to the rotor disc of a replaceable metal rotor bar. The bar illustrated is circular in cross-section and provided with an upwardly divergent conical surface 31 conforming to the inner surface of the split inserts or collets 30.
  • FIG. 8 illustrates in a section on the line EE of FIG. 5 a construction suitable for the attachment of a rotor bar with a replaceable rubber cover.
  • the bar illustrated is circular in cross-section and comprises a metal core bar 32 downwardly reducing in diameter from a step or shoulder 33 and upwardly increasing in diameter as at 34 from a parallel section 35 adjacent the step 33.
  • the core bar At its upper end the core bar has a cylindrical portion 36 which is truncated by a plane end surface 37 sloping with respect to the bar axis at the angle of inclination thereof so as to lie in a level plane when the bar is in position in the rotor disc 20.
  • a protective cap 38 of thin rubber or equivalent extensible material is placed over and conforms to the portion of the core bar above the step 33 and a thick slip-on wear resistant cover 39 is placed over the lower portion of the core bar and is provided with an internal step and parallel section conforming to the step 33 and parallel section 35 on the core bar which serve to retain the cover 39 in place when the split collet 40 is placed in position around it and the assembly so formed has been pushed or driven into the self-holding conical socket 29 in the rotor disc.
  • the removable bottom liner plates 41 thereof are provided with a combination of vertical baffle plates 42 curved in plan and so arranged that the distances of their leading edges 43 from the centre of the cell vary and a curve 44 joining them presents in plan view a four-lobed arcuate figure symmetrical about the centre of the cell.
  • the space between the battles also varies, being widest as at 45 between those baflles which direct the flow towards the corners of the cell and a minimum as at 46 between those which direct the flow to the mid portions of the cell walls.
  • the plan curvature of the individual baflles is such that at their leading edges the baffles lie substantially in the direction of the flow approaching from the rotor and at their trailing edges their direction is such as to direct the flow leaving them substantially at right angles to the walls of the cell.
  • the minimum distance from the centre of the cell of baffle leading edge is substantially greater than the maximum radial dimension of the rotor so that the mixture flow from the rotor impinges and turns outwards on the floor of the cell before entering the bafiles.
  • a circular clamping plate 47 overlapping the inner edges of the liner plates 41 is downwardly tightened by clamping nut 48 and stud 49 attached to the bottom of the cell.
  • the vertical location of the rotor with respect to the bottom of the cell is not critical but optimum results are obtained when the clearance between the bottom of the rotor and the bottom of the cell are of the order of one-fourth the bottom outside diameter of the rotor.
  • the height of the curved baflle plates 42 is not critical, but a minimum height approximately one-fourth the bot-tom outside diameter of the rotor is desirable. So arranged the top of the baflle plates is at the same elevation as the bottom of the rotor bars.
  • the invention provides when necessary a horizontal froth paddle 51 supported and actuated by hangers 52, arms 53 and drag links 54 said arms and drag links being so actuated by a rotating eccentric and linkage system 55 that the pinned connections 56 and 57 between the arms 53 and drag links 54 respectively and hangers 52 execute the traces shown in FIG. 1 and the paddle 51 describes in the direction of the arrows the flattened elliptical shaped path indicated by the dotted line 58 and the froth is pushed by the paddle toward-s and over a slatted weir 59 adjustable as to height by placing slats of varying width in the slots 60 arranged to accommodate them.
  • a handwheel 61 the fulcrum point 62 of the eccentric and linkage system 55 may be changed and the elevation of the paddle path 58 adjusted to suit the height of the froth overflow weir 59.
  • Pulp or solution to be processed enters the machine from the feed box 63 and passes successively through the cells via openings 64, 65 and 66 in the transverse walls thereof to the discharge box 67.
  • a slatted tail weir 68 adjustable for height by adding or removing slats is provided in the discharge box 67 for controlling the height of the surface of the pulp or solution in the cells 4 at a predetermined level below the froth overflow lip 69 and above the top of the rotor disc 20.
  • Processed pulp or solution overflowing the tail weir 68 is discharged from the machine through the pipe opening 70 in the bottom of the discharge box 67.
  • an axial zone 71 within and beneath the rotor with boundaries approximately as indicated by the chain dotted line 72 is maintained substantially free of liquid by the outward and downward impelling action of the inclined surfaces 73 of the rotor bars 21.
  • a mixing zone 74 in which pulp or solution entering downwa-rdly from the upper regions of the cell is mixed with air from the contiguous axial zone 71 and the resulting mixture impelled downwardly and outwardly from the mixing to impinge on the bottom of the cell 4 in an annular area adjacent the periphery of the clamp plate 47.
  • the mixture flowing outwardly on the bottom of the cell from the area of impingement thereon passes between the baffles 42 and is distributed in substantially a uniform manner at right angles towards and against the sidewalls of the cell thereafter rising towards the upper free surface 5 of the liquid, turning at and adjacent said surface and flowing substantially parallel thereto with separation of bubbles from the mixture to form the froth above, the residual mixture thereafter turning and flowing downwardly to the mixing zone 74.
  • the path of the mixture flow as above described is shown approximately in FIG. 1 by arrows in the body of the liquid in the cell.
  • the froth layer 50 which forms above the liquid surface 5 may be flowed between adjacent cells through openings such as 65 for removal from a cell other than that in which it was formed or it may be contained within and removed from the cell of its formation by insertion of the isolating froth boards 75 in the slots provided.
  • the froth is sulficiently mobile to overflow the froth weir 59 without assistance. Viscous or copious froths may require for their removal from the cell the use of paddle mechanism such as herein before described.
  • air is to be understood to mean air or other gas.
  • a flotation concentration apparatus comprising a vessel or cell for holding suspension, feed means feeding a suspension into said vessel or cell, discharge means for discharging a non-floated product from said vessel or cell, froth discharge means for discharging a froth product from the vessel or cell, a rotor in said vessel at a level to be submerged in said suspension, a hollow axial shaft on the bottom of which said rotor is mounted with the bottom of the shaft opening into said rotor, gas admitting means feeding gas into said hollow shaft for delivery into the interior of said rotor, rotating means coupled to said hollow axial shaft and rotating said rotor about a substantially vertical axis, said rotor comprising a generally horizontal boss or disc spaced from the bottom of the vessel or cell and supporting a plurality of bars attached thereto at their upper ends in uniform angular relation, symmetrically about said vertical axis, the enveloping peripheral diameter of said bars about said vertical axis diverging downwardly toward the bottom of the vessel or cell, the bars being inclined so that
  • a floation concentration apparatus as claimed in claim 1 in which said gas admitting means comprises a housing around the top of said shaft and at least one opening in said shaft within said housing through which the gas is conducted to the hollow shaft.
  • a flotation concentration apparatus as claimed in claim 2 in which said housing encompassing the shaft is sealed to it on either side of said gas admitting opening so as to form a closed annular space around the shaft, and a controllable setting two-way valve in said housing through which gas is transmitted to said annular space at the desired pressure.
  • a flotation concentration apparatus as claimed in claim 1 in which the rotor bars increase in cross-sectional area downwardly.
  • a flotation concentration apparatus as claimed in claim 1 in which the vessel has a substantially square crosssection, and said apparatus further comprises a removable bottom liner plate and a plurality of vertical bafiie plates curved in the horizontal direction and attached to said removable bottom liner plate, for distributing the flow in the cell, the distances of the inner ends of the bafiie plates from the center of the cell varying so as to produce in plan view a four lobed arcuate pattern, and the space between adjacent baflles also varying, being widest between those baflfies which direct the flow towards the corners of the cell.
  • a floation concentration apparatus as claimed in claim 1 in which the rotor disc is readily detachable from the shaft said rotor disc has an axial downwardly divergent conical bore, and said shaft having a corresponding conical surface thereon on which the rotor disc fits and is self-holding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US354026A 1963-03-28 1964-03-23 Froth flotation apparatus Expired - Lifetime US3378141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU28944/63A AU275207B2 (en) 1963-03-23 Flotation concentration process and aeration and distribution means for performing the like

Publications (1)

Publication Number Publication Date
US3378141A true US3378141A (en) 1968-04-16

Family

ID=3717080

Family Applications (1)

Application Number Title Priority Date Filing Date
US354026A Expired - Lifetime US3378141A (en) 1963-03-28 1964-03-23 Froth flotation apparatus

Country Status (7)

Country Link
US (1) US3378141A (en))
BE (1) BE645740A (en))
ES (1) ES298091A1 (en))
GB (1) GB988674A (en))
NL (1) NL6403298A (en))
OA (1) OA00009A (en))
SE (1) SE300097B (en))

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491880A (en) * 1967-12-07 1970-01-27 Arthur G Mckee Co Flotation apparatus and process
US3591149A (en) * 1969-01-16 1971-07-06 Passavant Werke Aeration apparatus
US3700103A (en) * 1969-07-17 1972-10-24 Walter C Giebel Recovery of minerals
US3778034A (en) * 1969-07-17 1973-12-11 W Giebel Agitator assembly for recovery of minerals
US3909413A (en) * 1972-02-21 1975-09-30 Mitsui Mining & Smelting Co Flotation machine
US3915391A (en) * 1972-07-17 1975-10-28 Engelhard Min & Chem Recovery of scheelite from ores by flotation
US3975469A (en) * 1974-01-23 1976-08-17 The De Laval Separator Company Device for revolving liquids and supplying gas thereto
US3979282A (en) * 1968-03-11 1976-09-07 English Clays Lovering Pochin & Company Limited Flotation of fine-grained materials
US4007920A (en) * 1973-08-29 1977-02-15 Mark Plunguian Mixing and aerating device
US4378436A (en) * 1979-09-08 1983-03-29 Hoechst Aktiengesellschaft Process and device for improving the quality of mixing of liquid especially viscous media
US4882098A (en) * 1988-06-20 1989-11-21 General Signal Corporation Mass transfer mixing system especially for gas dispersion in liquids or liquid suspensions
US6109449A (en) * 1998-11-04 2000-08-29 General Signal Corporation Mixing system for separation of materials by flotation
US20080179233A1 (en) * 2007-01-26 2008-07-31 Cheng-Hua Shen Scum removing unit for wastewater flotation tank
CN105268561A (zh) * 2015-10-31 2016-01-27 湖州佳思机械科技有限公司 一种矿物浮选机
CN113333182A (zh) * 2021-04-19 2021-09-03 国家电投集团黄河上游水电开发有限责任公司 一种浮选机及其矿浆槽
CN116197057A (zh) * 2023-04-25 2023-06-02 中国检验认证集团山东有限公司 一种铁矿石的浮选取样装置
CN118454906A (zh) * 2024-06-04 2024-08-09 泸溪蓝天高科有限责任公司 基于视觉测量的锌合金冶炼预加工用浮选装置
CN118847379A (zh) * 2024-09-25 2024-10-29 山东盛泰矿业科技有限公司 一种钛铁矿浮选装置及其浮选方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1259068A (en) * 1986-05-07 1989-09-05 Bach Systems Inc. Spider mounted centrifugal mixing impeller
CN109225663B (zh) * 2018-11-21 2020-12-01 严园妹 一种降低结垢的浮选机
CN113304891B (zh) * 2021-05-18 2022-07-22 中南大学 一种粗煤泥回收分选设备及方法

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911220A (en) * 1928-10-08 1933-05-30 Maschf Augsburg Nuernberg Ag Internal combustion engine
US1919970A (en) * 1933-02-07 1933-07-25 Gen Electric Impeller
GB436041A (en) * 1933-10-30 1935-10-03 Emil Guenther Improvements in joints for pipes, rods and the like
US2180120A (en) * 1937-12-04 1939-11-14 Saltzer Louis Drill bit and shank
US2232388A (en) * 1939-07-19 1941-02-18 Minerals Separation North Us Froth flotation apparatus
US2337806A (en) * 1941-10-21 1943-12-28 Arthur W Fahrenwald Flotation machine
US2673724A (en) * 1951-07-14 1954-03-30 Galigher Company Impeller for flotation machines
US2684233A (en) * 1951-12-07 1954-07-20 Pearson M Payne Froth flotation apparatus
US2892543A (en) * 1956-02-27 1959-06-30 Mining Process & Patent Co Aerator assembly with pulp elevating discharge
US2944326A (en) * 1955-06-02 1960-07-12 Gen Electric Method of staking blades
US3041050A (en) * 1958-05-12 1962-06-26 Us Smelting Refining And Minin Rotor tube assembly
US3067988A (en) * 1958-04-30 1962-12-11 Penarroya Miniere Metall Flotation with mechanical agitation
US3070229A (en) * 1958-07-21 1962-12-25 Loro & Parisini Spa Apparatus for the froth-flotation of minerals

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911220A (en) * 1928-10-08 1933-05-30 Maschf Augsburg Nuernberg Ag Internal combustion engine
US1919970A (en) * 1933-02-07 1933-07-25 Gen Electric Impeller
GB436041A (en) * 1933-10-30 1935-10-03 Emil Guenther Improvements in joints for pipes, rods and the like
US2180120A (en) * 1937-12-04 1939-11-14 Saltzer Louis Drill bit and shank
US2232388A (en) * 1939-07-19 1941-02-18 Minerals Separation North Us Froth flotation apparatus
US2337806A (en) * 1941-10-21 1943-12-28 Arthur W Fahrenwald Flotation machine
US2673724A (en) * 1951-07-14 1954-03-30 Galigher Company Impeller for flotation machines
US2684233A (en) * 1951-12-07 1954-07-20 Pearson M Payne Froth flotation apparatus
US2944326A (en) * 1955-06-02 1960-07-12 Gen Electric Method of staking blades
US2892543A (en) * 1956-02-27 1959-06-30 Mining Process & Patent Co Aerator assembly with pulp elevating discharge
US3067988A (en) * 1958-04-30 1962-12-11 Penarroya Miniere Metall Flotation with mechanical agitation
US3041050A (en) * 1958-05-12 1962-06-26 Us Smelting Refining And Minin Rotor tube assembly
US3070229A (en) * 1958-07-21 1962-12-25 Loro & Parisini Spa Apparatus for the froth-flotation of minerals

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491880A (en) * 1967-12-07 1970-01-27 Arthur G Mckee Co Flotation apparatus and process
US3979282A (en) * 1968-03-11 1976-09-07 English Clays Lovering Pochin & Company Limited Flotation of fine-grained materials
US3591149A (en) * 1969-01-16 1971-07-06 Passavant Werke Aeration apparatus
US3700103A (en) * 1969-07-17 1972-10-24 Walter C Giebel Recovery of minerals
US3778034A (en) * 1969-07-17 1973-12-11 W Giebel Agitator assembly for recovery of minerals
US3909413A (en) * 1972-02-21 1975-09-30 Mitsui Mining & Smelting Co Flotation machine
US3915391A (en) * 1972-07-17 1975-10-28 Engelhard Min & Chem Recovery of scheelite from ores by flotation
US4007920A (en) * 1973-08-29 1977-02-15 Mark Plunguian Mixing and aerating device
US3975469A (en) * 1974-01-23 1976-08-17 The De Laval Separator Company Device for revolving liquids and supplying gas thereto
US4378436A (en) * 1979-09-08 1983-03-29 Hoechst Aktiengesellschaft Process and device for improving the quality of mixing of liquid especially viscous media
US4882098A (en) * 1988-06-20 1989-11-21 General Signal Corporation Mass transfer mixing system especially for gas dispersion in liquids or liquid suspensions
US6109449A (en) * 1998-11-04 2000-08-29 General Signal Corporation Mixing system for separation of materials by flotation
US20080179233A1 (en) * 2007-01-26 2008-07-31 Cheng-Hua Shen Scum removing unit for wastewater flotation tank
CN105268561A (zh) * 2015-10-31 2016-01-27 湖州佳思机械科技有限公司 一种矿物浮选机
CN113333182A (zh) * 2021-04-19 2021-09-03 国家电投集团黄河上游水电开发有限责任公司 一种浮选机及其矿浆槽
CN116197057A (zh) * 2023-04-25 2023-06-02 中国检验认证集团山东有限公司 一种铁矿石的浮选取样装置
CN116197057B (zh) * 2023-04-25 2023-07-04 中国检验认证集团山东有限公司 一种铁矿石的浮选取样装置
CN118454906A (zh) * 2024-06-04 2024-08-09 泸溪蓝天高科有限责任公司 基于视觉测量的锌合金冶炼预加工用浮选装置
CN118847379A (zh) * 2024-09-25 2024-10-29 山东盛泰矿业科技有限公司 一种钛铁矿浮选装置及其浮选方法

Also Published As

Publication number Publication date
SE300097B (en)) 1968-04-08
ES298091A1 (es) 1964-09-01
NL6403298A (en)) 1964-09-29
GB988674A (en) 1965-04-07
BE645740A (en)) 1964-07-16
OA00009A (fr) 1966-01-15

Similar Documents

Publication Publication Date Title
US3378141A (en) Froth flotation apparatus
US2944802A (en) Froth flotation and aeration apparatus
US3491880A (en) Flotation apparatus and process
US4425232A (en) Flotation separation apparatus and method
US3479017A (en) Apparatus for charging liquids with gases
EP0287251B1 (en) Improved flotation apparatus
US3849310A (en) Method and apparatus for separating particles from a liquid
US4612113A (en) Repeating flotation machine
RU2348461C2 (ru) Вспомогательная мешалка для флотационного устройства
US4078026A (en) Device for dispersing gas into a liquid
US2892543A (en) Aerator assembly with pulp elevating discharge
US20220347635A1 (en) Impeller, a diffuser and an arrangement using such impeller and diffuser in a flotation tank
US3409130A (en) Flotation apparatus
US3182972A (en) Apparatus for the aeration of liquids
CN104174506A (zh) 旋翼浮动刷矿物浮选机
US3235233A (en) Surface aeration of liquids
CN110614168A (zh) 一种带喷射叶轮的搅拌式浮选机
US3464552A (en) Froth flotation apparatus
US2648529A (en) Froth flotation apparatus
US7980824B2 (en) Rotor for a flotation machine
CN113457853B (zh) 一种无动力气体搅拌式浮选装置及浮选方法
US2073148A (en) Flotation of minerals
US2252576A (en) Flotation apparatus
US2337806A (en) Flotation machine
US2466037A (en) Flotation process and apparatus