US1187772A - Apparatus for concentrating ores. - Google Patents

Apparatus for concentrating ores. Download PDF

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US1187772A
US1187772A US79327013A US1913793270A US1187772A US 1187772 A US1187772 A US 1187772A US 79327013 A US79327013 A US 79327013A US 1913793270 A US1913793270 A US 1913793270A US 1187772 A US1187772 A US 1187772A
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outlet
hopper
ore
pulp
pulp vessel
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US79327013A
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Gustaf Emil Oehrn
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Minerals Separation Ltd
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Minerals Separation Ltd
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    • 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
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • 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
    • B03D1/1456—Feed mechanisms for the slurry
    • 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

Definitions

  • the mineral frothing agent is preferably supplied to the ore by a steam injector and in the preferred form of apparatus it is supplied through a pipe arranged in the funnel shaped exthe steam pipe, the frothing agent passing into the funnel shaped extension from a reservoir.
  • the steam pipe acts with the pipe supplying the agent as an injector for delivering tension. outside 0F LIDI'NG6, STOCKHOLM, SWEDEN, ASSIGNOR' T0 MINERALS SEPARATION LIMITED, OF LONDON, ENGLAND.
  • a cone of wood, metal or other material may be arranged in the pulp vessel below the outlet from the hopper to distribute the ore pulp as it issues therefrom. It is found convenient to arrange below the surface of the liquid in the pulp vessel a water spray in such position that streams of water issue from it and meet the rising mineral froth.
  • the hopper may be arranged with a portion of its periphery on a level with theoverflow lip fromthe pulp vessel. so that a part of the froth overflows into the hopper and is submitted to a retreatment; also the pulp vessel may be divided by a partition extending nearly to the bottom, the hopper and overflow lip for the concentrates being arranged for the water carrying the gangue slimes on the other side of the partition. In this latter case the outflow for the gangue slimes is arranged at a level just below the level of the overflow lip for the concentrates.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, and means for removing the froth from the pulp vessel.
  • Apparatus for concentrating ores comprising in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an. injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore so arranged that the steam pipe forms therewith an injector for the frothing agent and air, and means for removing the froth from the pulp vessel.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel, a 9
  • Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the. crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside thev steam pipe and having a funnel-shaped extension outside the steam pipe so that the steam pipe forms with the said pipe an injector for the frothing agent air, a cone-shaped device arranged moving the froth from the pulp vessel. 5.
  • Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the crushed ore having an out- -ranged that the steam pipe let in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such out let an injector for feeding the ore into the pulp vessel, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises tothe surface, and means for removing the froth as it overflows from the pulp vessel.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in'the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore so arforms therewith' an injector for the frothing agent and air, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and surface, and means for removing the'froth from the pulp vessel.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside the steam pipe and having a funnelshaped extension that the steam pipe forms with the said prising,
  • an injector for therein a steam pipe pipe an injector for the frothing agent and air, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises to the surface, and means for removing from the pulp vessel.
  • Apparatus for concentrating ore comin combination a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outfeeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside the steam pipe and having a funnela cone-shaped device arranged underthe rises to the the pulp outside the steam pipe so the froth.
  • Apparatus for concentrating ores comprising in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a port on a level with a discharge lip of the pulp vessel, a steam pipe having an injector'noz- 'zle in'the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel,, a pipe for supplying a frothing agent and air to the crushed ore arranged, inside the steam pipe having a funnel-shaped extension outside the. steam pipe so that the steam pipe forms with the said pipe an injector, for the frothing means for removing the vessel.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a portion of its periphery on a level with the discharge lip of the pulp vessel, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into vessel, a water spray in the pulp vessel, below the surface tf the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises to the surface, and means for removagent and air, an froth from'the pulp ing the froth as it 'verflows from the pulp vessel.
  • Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a portion of its periphery on of the pulp injector nozzle in the hopperin proximity to the outlet thereof so as to' form with the outlet an injector for feeding the ore into the pulp vessel, a cone-shaped device arranged under the outlet from thehopper to -dis tribute the ore mixture, a water spray "in the pulp vessel Below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and arises to the surface, and means forremoving the froth as it overflows from the pulp vessel.
  • Apparatus for concentrating ores comprising, in combination, a pulp vessel divided by a partition extending nearly to the l sttom, a hopper for the crushed ore ion of its periphery a level with the discharge lip vessel, a steam pipe having an" liquid level therein,
  • a steam pipe having an outlet in the pulp Vessel below the a steam pipe having an: injector nozzle, in the hopper injproximity v. to the outlet thereof so as to form with such outlet an injector for, feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arrangedinside the steam pipe and having a funnel-shaped extension outside the steam pipe so that the steam pipe forms with the

Description

e. E. OHRN. APPARATUS FOR CONCENTRATING ORES.
APPLICATION FILED OCT. 4, I913.
Patented June 20, 1916.
Wa'nem w.
' steam pipe and havlng a GUSTAF EMIL @IIRN,
, APPARATUS FOR CONCENTRATING ORES.
antra.
Application filed October 4., 1913. Serial No. 793,270.
To all whom it may concern Be it known that I, GUs'rAr EMIL OHRN, subject of the King of Sweden, and residing at Lidingo', Stockholm, Sweden, have invented certain new and useful Improvements in Apparatus for Concentrating Ores, of which the following is a specification.
This invention is for improvements in or relating to apparatus for concentrating ores and, it refers more particularly to apparatus for carrying into efiect the agitation froth process of ore concentration.
In the United granted November 6th, 1906, 96267 8 granted June 28th, 1910, and 1064723 granted June 17th, 1913, processes have been described which consist in agitating the ore mixed with water with a minute proportion of a mineral frothing agent in such a manner as to beat in air; in certain cases acid may be added to the mixture of ore, water and frothing agent. In the prior Patents Nos. 979857 and 1064209 apparatuses have been described for carrying such processes into effect and the agitation has been produced by mechanical agitators.
It is the object of this invention to provide an apparatus in which mechanical agitators are dispensed with.
According to this invention apparatus for concentrating ores comprises in combination a pulp vessel, a hopper for the crushed ore whose outlet is below face of the water in the pulp vessel, a steam pipe in the hopper forming with it an injector and a launder for removing the froth as it overflows from the pulp vessel.
The mineral frothing agent is preferably supplied to the ore by a steam injector and in the preferred form of apparatus it is supplied through a pipe arranged in the funnel shaped exthe steam pipe, the frothing agent passing into the funnel shaped extension from a reservoir. The steam pipe acts with the pipe supplying the agent as an injector for delivering tension. outside 0F LIDI'NG6, STOCKHOLM, SWEDEN, ASSIGNOR' T0 MINERALS SEPARATION LIMITED, OF LONDON, ENGLAND.
Specification of Letters Patent.
States Patents Nos. 835120,
the surthe agent to the ore Patented June 20, 1910..
and at the same time-it acts as an air injector, the air being drawn in with the frothing agent through the funnel shaped extension of the supply pipe. A cone of wood, metal or other material may be arranged in the pulp vessel below the outlet from the hopper to distribute the ore pulp as it issues therefrom. It is found convenient to arrange below the surface of the liquid in the pulp vessel a water spray in such position that streams of water issue from it and meet the rising mineral froth.
The hopper may be arranged with a portion of its periphery on a level with theoverflow lip fromthe pulp vessel. so that a part of the froth overflows into the hopper and is submitted to a retreatment; also the pulp vessel may be divided by a partition extending nearly to the bottom, the hopper and overflow lip for the concentrates being arranged for the water carrying the gangue slimes on the other side of the partition. In this latter case the outflow for the gangue slimes is arranged at a level just below the level of the overflow lip for the concentrates.
Forms of apparatus according to this invention will now be described with reference to the accompanying drawings in which- Figure 1 shows an apparatus in which the hopper is arranged with a portion of its periphery on a level with the overflow lip for the concentrates. Fig. 2 shows a modification in which the pulp vessel is divided by a partition and Fig. 3 shows a further modification in which a guide plate is arranged under the. outlet of the hopper.
Like letters refer to like-parts throughout the drawings.
Referring to Fig. 1 a pulp vessel A is provided with a hopper B whose outlet C is below the level of the water therein. In the hopper B is arranged a steam pipe D which with the hopper constitutes an injector. Within the steam pipe D and pass ing through it is arranged a small pipe E on one side of the partition 7 -under having a funnel shaped extension F outside the steam pipe. A cone G of Wood, metal or other material is arranged with its apex the outlet 0 from the hopper. The pulpvessel is provided with an overflow lip H, a launder J, and an outlet'K at the bottom for the tailings. A water spray L is arranged under the surface of the water. in the pulp vessel to direct streams of water on the froth as it rises to the surface.
In the apparatus shown in Fig. 2 the pulp vessel A is divided by a partition Q which extends nearly ,to the bottom, the hopper B being arranged on one side of it and the concentrates launder J into which a the froth flows over overflow lips H exof the overflow lip H tending across the middle of the box. On the other side of the partition an outlet M is provided for the water carrying the gangue slimes.
Referring now to Fig.3, the hopper B is supported on a shelf N and under the outlet C is arranged a bafile O to direct the ore mixture toward the surface of the liquid in the pulp vessel. vA partition P is also provided extending upward from the wall of the pulp vessel to a point just below that for the concentrates.
The operation of the apparatus is as follows. The'crushed ore'is fed into the hopper B, either dry or preferably mixed with water in the form of pulp. Steam under 7 pressure is supplied to the steam pipe D and a frothing agent,
V011 into the funnel shaped opening F of the pipe E. The steam passing through the pipe D acts with the frothing agent supply pipe E as an injector and sucks in. frothing agent and air, and it also acts with the hopper B as an injector forcing the ore pulp together with the frothing agent through the outlet G into the pulp vessel. The steam attached to the air" bubbles rise they meet jet causes a thorough agitation-of the mixture which is forced under the surface of the water in the pulp erous particles become attached to thebubbles of air mixed into the ore pulp by the action of the steamjet and are carried by them to the surface. The guide plate 0 shown inFig. 3 guides the agitated mixture toward the surface. As the mineral coated jets of water issuing from the sprayL which help'to remove any particles of gangue which may have become bubbles. The gangue "sinks to the bottom of the pulpvessel and I is removed through the outlet K and-the The water containing .under the-dividing metalliferous particles 'in the: form of acopious froth, overflow'over the lip H intoi the launder fJ from Which-they are removed.
partition Q ,over the lip of the short partition P and away through the outlet M. When necessary acid such as such for example as ole 1c acid, is allowed to drip from a reserand air, and
vessel. .The-metallif-.
and .under the outlet from the hopper to distribute the ore mixture, and means for regangue slimes flows What I claim to be my invention and desire to secureby Letters Patent is:
1. Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, and means for removing the froth from the pulp vessel.
2. Apparatus for concentrating ores comprising in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an. injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore so arranged that the steam pipe forms therewith an injector for the frothing agent and air, and means for removing the froth from the pulp vessel.
3. Apparatus for concentrating ores comprising, in combination, a pulp vessel, a 9
.pulp vessel, a pipe for supplying a frothing agent and air to the crush l ore arranged inside the steam pipe and having a funnel-shaped extension outside the steam pipe so that the steam pipe forms with the said pipe an injector for the frothing agent means for removing the froth from the pulp vessel.
4. Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the. crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside thev steam pipe and having a funnel-shaped extension outside the steam pipe so that the steam pipe forms with the said pipe an injector for the frothing agent air, a cone-shaped device arranged moving the froth from the pulp vessel. 5. Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the crushed ore having an out- -ranged that the steam pipe let in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such out let an injector for feeding the ore into the pulp vessel, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises tothe surface, and means for removing the froth as it overflows from the pulp vessel.
6. Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in'the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore so arforms therewith' an injector for the frothing agent and air, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and surface, and means for removing the'froth from the pulp vessel.
7. Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside the steam pipe and having a funnelshaped extension that the steam pipe forms with the said prising,
' let an injector for therein, a steam pipe pipe an injector for the frothing agent and air, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises to the surface, and means for removing from the pulp vessel.
8. Apparatus for concentrating ore comin combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outfeeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arranged inside the steam pipe and having a funnela cone-shaped device arranged underthe rises to the the pulp outside the steam pipe so the froth.
llf-Illl outlet from the hopper todistribute the ore mixture, a water spray in the pulp vessel below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and arises to the surface,-and means for removing the froth from the pulp vessel.
9. Apparatus for concentrating ores comprising in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a port on a level with a discharge lip of the pulp vessel, a steam pipe having an injector'noz- 'zle in'the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into the pulp vessel,,a pipe for supplying a frothing agent and air to the crushed ore arranged, inside the steam pipe having a funnel-shaped extension outside the. steam pipe so that the steam pipe forms with the said pipe an injector, for the frothing means for removing the vessel.
10. Apparatus for concentrating ores comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a portion of its periphery on a level with the discharge lip of the pulp vessel, a steam pipe having an injector nozzle in the hopper in proximity to the outlet thereof so as to form with such outlet an injector for feeding the ore into vessel, a water spray in the pulp vessel, below the surface tf the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and rises to the surface, and means for removagent and air, an froth from'the pulp ing the froth as it 'verflows from the pulp vessel.
11. Apparatus for concentrating ore comprising, in combination, a pulp vessel, a hopper for the crushed ore having an outlet in the pulp vessel below the liquid level therein arranged with a portion of its periphery on of the pulp injector nozzle in the hopperin proximity to the outlet thereof so as to' form with the outlet an injector for feeding the ore into the pulp vessel, a cone-shaped device arranged under the outlet from thehopper to -dis tribute the ore mixture, a water spray "in the pulp vessel Below the surface of the liquid and in proximity to the outlet from the hopper arranged to spray the froth as it forms and arises to the surface, and means forremoving the froth as it overflows from the pulp vessel.
12. Apparatus for concentrating ores comprising, in combination, a pulp vessel divided by a partition extending nearly to the l sttom, a hopper for the crushed ore ion of its periphery a level with the discharge lip vessel, a steam pipe having an" liquid level therein,
having an outlet in the pulp Vessel below the a steam pipe having an: injector nozzle, in the hopper injproximity v. to the outlet thereof so as to form with such outlet an injector for, feeding the ore into the pulp vessel, a pipe for supplying a frothing agent and air to the crushed ore arrangedinside the steam pipe and having a funnel-shaped extension outside the steam pipe so that the steam pipe forms with the
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494534A (en) * 1944-03-16 1950-01-17 Us Hoffman Machinery Corp Coolant filter system
US2689650A (en) * 1952-09-29 1954-09-21 Claude L Key Cleaning apparatus for removing foreign matter from peas
US2759607A (en) * 1951-02-27 1956-08-21 Union Oil Co Flotation of hydrocarbon impurities
US4436617A (en) 1982-07-22 1984-03-13 Cocal, Inc. Froth flotation ore beneficiation process utilizing enhanced gasification and flow techniques
US5660718A (en) * 1993-02-10 1997-08-26 M.D. Research Company Pty, Ltd. Method and apparatus for separation by flotation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494534A (en) * 1944-03-16 1950-01-17 Us Hoffman Machinery Corp Coolant filter system
US2759607A (en) * 1951-02-27 1956-08-21 Union Oil Co Flotation of hydrocarbon impurities
US2689650A (en) * 1952-09-29 1954-09-21 Claude L Key Cleaning apparatus for removing foreign matter from peas
US4436617A (en) 1982-07-22 1984-03-13 Cocal, Inc. Froth flotation ore beneficiation process utilizing enhanced gasification and flow techniques
US5660718A (en) * 1993-02-10 1997-08-26 M.D. Research Company Pty, Ltd. Method and apparatus for separation by flotation

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