WO2006091817A2 - Procede et dispositif destines a determiner un ensemble de parametres de fonctionnement pour un separateur mineral de lit fluidise - Google Patents

Procede et dispositif destines a determiner un ensemble de parametres de fonctionnement pour un separateur mineral de lit fluidise Download PDF

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Publication number
WO2006091817A2
WO2006091817A2 PCT/US2006/006598 US2006006598W WO2006091817A2 WO 2006091817 A2 WO2006091817 A2 WO 2006091817A2 US 2006006598 W US2006006598 W US 2006006598W WO 2006091817 A2 WO2006091817 A2 WO 2006091817A2
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WO
WIPO (PCT)
Prior art keywords
chamber
gangue
hopper
input
input material
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.)
Ceased
Application number
PCT/US2006/006598
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English (en)
Other versions
WO2006091817A3 (fr
Inventor
R. J. Smythe
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.)
2082710 ONTARIO Ltd
Original Assignee
2082710 ONTARIO 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
Application filed by 2082710 ONTARIO Ltd filed Critical 2082710 ONTARIO Ltd
Publication of WO2006091817A2 publication Critical patent/WO2006091817A2/fr
Anticipated expiration legal-status Critical
Publication of WO2006091817A3 publication Critical patent/WO2006091817A3/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B03B4/06—Separating by pneumatic tables or by pneumatic jigs using fixed and inclined tables ; using stationary pneumatic tables, e.g. fluidised beds
    • B03B4/065—Separating by pneumatic tables or by pneumatic jigs using fixed and inclined tables ; using stationary pneumatic tables, e.g. fluidised beds having inclined portions

Definitions

  • the present invention relates to use of fluidized bed mineral separators. Specifically, the present invention is a method and device for determining a set of
  • mined material is delivered to the mineral separator and a fluidizing gas
  • the fluidized bed of materials separates into layers as the mass of particles is balanced by the upward force of the gas flow drag
  • the floating of particles is based upon the density of the mineral
  • the belt is typically mounted on a tilted deck and moved at a predetermined
  • a fluidized bed mineral separator is highly dependent upon a number of operating parameters. For example, the gas flow rate, the angle of the
  • the present invention is a method and device for determining a set of
  • the device includes a feedstock input hopper
  • the input material is composed of a mixture of gangue
  • the seed material is the desired material, or a material having a density substantially equal to the density of the desired material, or a combination
  • the device includes an electrostatic charge generator imparting
  • the device further includes a chamber enclosed by an outer wall having an exit port and a gas permeable base.
  • the chamber communicates with the feedstock
  • the chamber is divided into a hopper chamber and a gangue chamber by an inner wall, with both the hopper
  • the feedstock input hopper delivers the input material
  • the outer wall tilts through a range of angles with respect to the direction of gravity.
  • the outer wall and gas permeable base are fixed with respect to
  • a gas source delivers pressurized gas through the gas permeable base.
  • controller optionally a pressure controller, controls the gas source to create a fluidized bed of the input material in the chamber.
  • a pressure measuring device measures the pressure of the pressurized gas creating the fluidized bed.
  • a controller communicates with the outer wall to tilt the outer wall to an
  • measuring device measures the angle of the outer wall with respect to the direction of gravity.
  • a feedstock input hopper controller controls the flow rate of the input
  • the hopper chamber receives input material from the feedstock input hopper
  • a flow measuring device configured to measure the flow rate of the seed material.
  • the present invention also includes a method for creating a fluidized bed to
  • a chamber enclosed by an outer wall having an exit port and a gas permeable base is provided.
  • the chamber has a hopper chamber separated from a gangue chamber by an inner wall, in which both the hopper
  • An input material comprising a mixture of gangue and a seed material is
  • the seed material is the desired material, or a material having a density substantially equal to the density of the desired material, or
  • the input material is imparted with an electrostatic charge.
  • the input material is
  • Pressurized gas is delivered through the gas permeable base, with the
  • the chamber is tilted to an angle with respect to the direction of gravity such
  • the chamber is tilted after the fluidized bed of input material is created
  • the angle of the chamber with respect to the direction of gravity is measured.
  • the flow rate of the input material into the chamber optionally the hopper
  • the flow rate of the input material is controlled such that the input material
  • the flow rate of the input material into the hopper chamber is measured.
  • FIG. 1 is a side view of a device according to an embodiment of the present invention.
  • FIG. 2 is a top view of a chamber according to an embodiment of the present
  • FIG. 3 is a cutaway side view of a chamber according to an embodiment of
  • FIG. 4 is a cutaway side view of the chamber of FIG. 3 in a tilted position
  • FIG. 5 is a cutaway side view of the device of FIG. 1 in operation;
  • FIG. 6 is a flowchart of a method according to the present invention. Description
  • the device of the present invention creates a fluidized bed 100 in a chamber 170.
  • the chamber 170 is
  • the chamber 170 itself may take any shape, form, or
  • the chamber 170 is a rectangular parallelopiped with a rectangular gas permeable base 150.
  • invention includes an outer wall 102 that is movable with respect to the direction of
  • the outer wall 102 itself may be movable independent of the gas permeable base 150. In another optional embodiment, the outer wall 102 is fixed with respect to the gas permeable base 150 and the entire
  • chamber 170 is movable. This optional embodiment, illustrated in FIGS. 1-5, has a chamber 170 that can be tilted with respect to the direction of gravity.
  • a controller maybe provided to control the tilt of the outer wall 102 with respect to the direction of gravity.
  • the controller may include an
  • actuator such as a motor, pump, lift, jack, or the like, to tilt the outer wall 102 itself or tilt the chamber 170, thereby causing the outer wall 102 to tilt.
  • an actuator such as a motor, pump, lift, jack, or the like, to tilt the outer wall 102 itself or tilt the chamber 170, thereby causing the outer wall 102 to tilt.
  • angle measuring device may be provided so that the angle 108 of the tilted outer wall
  • the chamber may have multiple, i.e. two or more, stages, at
  • the chamber 170 includes a hopper chamber 110 and a gangue chamber 120 separated by an inner wall 130,
  • the inner wall 130 is shorter in vertical height than the outer wall 102 so that
  • the gas permeable base 150 may take many different forms. In an optional
  • the gas permeable base 150 is a gas dispersion plate or membrane.
  • a fabric, woven from natural or synthetic threads may form a gas dispersion membrane used in the gas permeable base 150.
  • a gas dispersion membrane may be held by supports. It is also contemplated that the gas dispersion membrane may be formed from layers of
  • gas permeable base 150 is formed from a non-resistance surface potential difference between layers of fabric.
  • a rigid or flexible gas dispersion plate may be used to form a gas permeable base 150.
  • the gas permeable base 150 is formed from a non-resistance surface potential difference between layers of fabric.
  • input material is delivered to the chamber 170.
  • the input material is delivered from, a
  • feedstock input hopper 104 the feedstock input hopper
  • 104 may be a gravity feed, such as that shown in FIGS. 1 and 5, or may include an
  • active transport such as a pump, belt, or the like, to move the input material.
  • the feedstock input hopper 104 may deliver the input material through
  • controller 106 to control the flow of input material from the feedstock
  • the controller 106 could take many forms, including a valve, meter, gate, tap, or other means for varying the flow of the input material. In an
  • 104 may be directed to deliver input material to a subset of the chambers.
  • the feedstock input hopper 104 delivers input material to the hopper chamber 110.
  • measuring device may be provided to measure the flow of the input material from
  • a gas source 106 delivers pressurized gas through the gas permeable base 150.
  • the chamber 170 is a gas source 106 that delivers pressurized gas through the gas permeable base 150.
  • the chamber 170 a gas source 106 that delivers pressurized gas through the gas permeable base 150.
  • the gas source 106 may deliver any type of
  • the feedstock input hopper 104 carries input material
  • the purpose of the present method and device is to determine the operating parameters of a fluidized bed mineral separator extracting a desired material from gangue, i.e. unwanted material, optionally in particulate form.
  • input material 240 is a sample of the gangue seeded with a seed material either in the
  • present device is then used to extrapolate the operating parameters for a fluidized
  • bed mineral separator For example, in determining the behavior of gangue so that a
  • fluidized bed mineral separator could be configured to separate gold, the present
  • input material 240 consisting of gangue seeded with gold, or gangue seeded with material having a substantially similar density to gold, such as
  • the device includes
  • electrostatic charge generator and the input material is imparted with an electrostatic charge.
  • the electrostatic charge generator could impart an electrostatic
  • Pressurized gas is delivered to the input material in the chamber 170, optionally the hopper chamber 110.
  • the pressure of the gas is controlled to cause
  • the input material for form 620 a fluidized bed 220.
  • a fluidized bed is characterized by particles floating on a column of pressurized air against their mass and is identified by a boiling or simmering appearance.
  • the fluidized bed 220 allows stratification of the input material 240.
  • bed 220 of input material reaches the exit port 160 after the fluidized bed is created.
  • the method is
  • the fluidized bed of input material reaches the top of the inner wall
  • the input material is added 640 so that input
  • the chamber 120 and gangue flows from the gangue chamber 120 out through the exit port 160, while the seed material is retained in the chamber 170, i.e. the hopper chamber 110 and/or the gangue chamber 120.
  • any of the angle of the tilt, the flow rate of the input material, and/or the pressure of the gas may be altered until the ratio of
  • seed material retained in the chamber reaches a desired level. That is, by manipulating one or more of these factors, it is possible to obtain a desired residence time for the fluidized bed of input material so that the seed material precipitates
  • the seed material make up at least 30% of the total
  • one or more of the tilt angle, input material flow rate, and gas pressure maybe adjusted until the desired level is reached.
  • one or more of the tilt angle, input material flow rate, and gas pressure are measured. Using these measurements, the operating
  • present method and device may not directly translate to the operating parameters for
  • method and device may allow the user to empirically correlate certain measurements obtained in the present device with the operating parameters of the user's fluidized

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un procédé et un dispositif destinés à déterminer des paramètres de fonctionnement pour un séparateur minéral de lit fluidisé comprenant une trémie d'entrée de charge d'alimentation contenant une matière d'entrée. La matière d'entrée consiste en un mélange de gangue et une matière de semence sous forme de matière désirée devant être extraite de la gangue, ou une matière possédant une densité sensiblement similaire à la densité de la matière souhaitée. Le dispositif peut éventuellement comprendre un générateur de charge électrostatique chargeant la matière d'entrée. Une chambre enfermée par une paroi externe possède un port de sortie et une base perméable au gaz recevant la matière d'entrée. Un lit fluidisé est créé par administration d'air sous pression à travers la base perméable au gaz. La paroi externe est inclinée par rapport au sens de gravité et la matière d'entrée supplémentaire est délivrée dans la chambre jusqu'à ce que la gangue s'écoule sensiblement du port d'entrée alors que la matière de semence est retenue dans la chambre.
PCT/US2006/006598 2005-02-22 2006-02-22 Procede et dispositif destines a determiner un ensemble de parametres de fonctionnement pour un separateur mineral de lit fluidise Ceased WO2006091817A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US65533305P 2005-02-22 2005-02-22
US60/655,333 2005-02-22
US35540406A 2006-02-16 2006-02-16
US11/355,404 2006-02-16

Publications (2)

Publication Number Publication Date
WO2006091817A2 true WO2006091817A2 (fr) 2006-08-31
WO2006091817A3 WO2006091817A3 (fr) 2007-11-01

Family

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Application Number Title Priority Date Filing Date
PCT/US2006/006598 Ceased WO2006091817A2 (fr) 2005-02-22 2006-02-22 Procede et dispositif destines a determiner un ensemble de parametres de fonctionnement pour un separateur mineral de lit fluidise

Country Status (1)

Country Link
WO (1) WO2006091817A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104620368A (zh) * 2012-09-07 2015-05-13 Soitec公司 用于沿选择的界面分离至少两个衬底的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3148475A1 (de) * 1981-02-23 1982-09-23 Gebrüder Bühler AG, 9240 Uzwil "trennvorrichtung fuer getreide und aehnliches korngut"
ATE31254T1 (de) * 1984-05-08 1987-12-15 Buehler Ag Geb Vorrichtung und verfahren zum trennen von koernigem gut.
US5024334A (en) * 1989-06-09 1991-06-18 Iowa State University Research Foundation, Inc. Method and means for gravity table automation
US5541831A (en) * 1993-04-16 1996-07-30 Oliver Manufacturing Co., Inc. Computer controlled separator device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104620368A (zh) * 2012-09-07 2015-05-13 Soitec公司 用于沿选择的界面分离至少两个衬底的方法
CN104620368B (zh) * 2012-09-07 2016-12-07 Soitec公司 用于沿选择的界面分离至少两个衬底的方法

Also Published As

Publication number Publication date
WO2006091817A3 (fr) 2007-11-01

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