Patents by Inventor Graeme J. Jameson

Graeme J. Jameson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210078018
    Abstract: A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer which rises above an interface formed between the froth layer and the mixture of particles and fluid, such that a quantity of the selected particles is conveyed out of the vessel by the froth layer to become a first product of the system. The vessel also has a first outlet arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel, an entry to the first outlet being located in a region proximate to, but below, the interface. The vessel also has a second outlet arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel which is located below the first outlet.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventor: Graeme J. Jameson
  • Patent number: 10850286
    Abstract: A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel 10 into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer 13 which rises above an interface 14 formed between the froth layer 13 and the mixture of particles and fluid 12, such that a quantity of the selected particles is conveyed out of the vessel 10 by the froth layer 13 to become a first product of the system. The vessel 10 also has a first outlet 29 arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel 10, an entry to the first outlet 29 being located in a region proximate to, but below, the interface 14. The vessel also has a second outlet 20 arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel 10 which is located below the first outlet 29.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: December 1, 2020
    Assignee: HUNTER PROCESS TECHNOLOGIES PTY LIMITED
    Inventor: Graeme J. Jameson
  • Publication number: 20200038881
    Abstract: A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel 10 into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer 13 which rises above an interface 14 formed between the froth layer 13 and the mixture of particles and fluid 12, such that a quantity of the selected particles is conveyed out of the vessel 10 by the froth layer 13 to become a first product of the system. The vessel 10 also has a first outlet 29 arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel 10, an entry to the first outlet 29 being located in a region proximate to, but below, the interface 14. The vessel also has a second outlet 20 arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel 10 which is located below the first outlet 29.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventor: Graeme J. Jameson
  • Patent number: 10441958
    Abstract: A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel 10 into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer 13 which rises above an interface 14 formed between the froth layer 13 and the mixture of particles and fluid 12, such that a quantity of the selected particles is conveyed out of the vessel 10 by the froth layer 13 to become a first product of the system. The vessel 10 also has a first outlet 29 arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel 10, an entry to the first outlet 29 being located in a region proximate to, but below, the interface 14. The vessel also has a second outlet 20 arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel 10 which is located below the first outlet 29.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 15, 2019
    Assignee: HUNTER PROCESS TECHNOLOGIES PTY LIMITED
    Inventor: Graeme J. Jameson
  • Publication number: 20180243757
    Abstract: A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel 10 into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer 13 which rises above an interface 14 formed between the froth layer 13 and the mixture of particles and fluid 12, such that a quantity of the selected particles is conveyed out of the vessel 10 by the froth layer 13 to become a first product of the system. The vessel 10 also has a first outlet 29 arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel 10, an entry to the first outlet 29 being located in a region proximate to, but below, the interface 14. The vessel also has a second outlet 20 arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel 10 which is located below the first outlet 29.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 30, 2018
    Inventor: Graeme J. Jameson
  • Patent number: 9919320
    Abstract: A flotation separation apparatus for separating particles in suspensions, feeds slurry containing the particles through an inlet into a contactor where gas is fed through an inlet to mix with the slurry, for example in a downwardly plunging jet, to form a gas-liquid bubbly two-phase mixture under pressure from an outlet restriction in a throttling duct. The mixture is passed through a flow manipulator configured to induce a high energy dissipation rate, for example by way of a Shockwave formed in a diverging section of the throttling duct reducing the size of the bubbles and brining those bubbles into intimate contact with particles in the mixture which is released into a separation cell where a flow manipulating draft tube is provided to reduce turbulence in the mixture. Alternative apparatus and methods for inducing the high energy dissipation rate and for reducing turbulence in the mixture are also described and claimed.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: March 20, 2018
    Assignee: THE UNIVERSITY OF NEWCASTLE RESEARCH ASSOCIATES LIMITED
    Inventor: Graeme J. Jameson
  • Publication number: 20170216850
    Abstract: A flotation separation apparatus for separating particles in suspensions, feeds slurry containing the particles through an inlet into a contactor where gas is fed through an inlet to mix with the slurry, for example in a downwardly plunging jet, to form a gas-liquid bubbly two-phase mixture under pressure from an outlet restriction in a throttling duct. The mixture is passed through a flow manipulator configured to induce a high energy dissipation rate, for example by way of a Shockwave formed in a diverging section of the throttling duct reducing the size of the bubbles and brining those bubbles into intimate contact with particles in the mixture which is released into a separation cell where a flow manipulating draft tube is provided to reduce turbulence in the mixture. Alternative apparatus and methods for inducing the high energy dissipation rate and for reducing turbulence in the mixture are also described and claimed.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Inventor: Graeme J. Jameson
  • Publication number: 20080308502
    Abstract: A flotation separation apparatus for separating particles in suspensions, feeds slurry containing the particles through an inlet (10) into a contactor (16) where gas is fed through an inlet (12) to mix with the slurry, for example in a downwardly plunging jet (14), to form a gas-liquid bubbly two-phase mixture under pressure from an outlet restriction in a throttling duct (18). The mixture is passed through a flow manipulator configured to induce a high energy dissipation rate, for example by way of a Shockwave formed in a diverging section of the throttling duct (18) reducing the size of the bubbles and brining those bubbles into intimate contact with particles in the mixture which is released into a separation cell (21) where a flow manipulating draft tube (20) is provided to reduce turbulence in the mixture. Alternative apparatus and methods for inducing the high energy dissipation rate and for reducing turbulence in the mixture are also described and claimed.
    Type: Application
    Filed: February 1, 2006
    Publication date: December 18, 2008
    Applicant: The UIniversity of Newcastle Researcdh Associates Limited
    Inventor: Graeme J. Jameson
  • Patent number: 5535893
    Abstract: Method and apparatus for the separation of particles from a particulate suspension. The apparatus comprises a rotating flotation drum (10) with a feed distribution chamber (13). Particulate suspension feed enters the chamber through a delivery pipe (20). The feed passes through holes (21) into the particle collection chamber (22). Air is passed into the particulate suspension through a porous inner wall (29) and a froth is generated. The froth and particulate suspension pass into a froth cleaning chamber (32). The froth is washed by being sprayed from a washwater distribution pipe (47). Froth is removed from the drum by a froth scraper (49) through a froth removal chute (50). Unfrothed particulate suspension passes through openings (40) into a weir chamber (41) and is removed through a launder (45).
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: July 16, 1996
    Assignee: University of Newcastle Research Associates Ltd.
    Inventor: Graeme J. Jameson
  • Patent number: 5332100
    Abstract: A method for the beneficiation of mineral ores by the flotation method whereby a slurry is introduced under pressure into the top of a first column through a downwardly facing nozzle, and air is entrained into the slurry forming a downwardly moving foam bed in the first column. The foam bed passes from the bottom of the first column into a second column where the froth and liquid separate, the froth carrying the values floating upwardly and over a weir and the liquid being drained with the gangue. The liquid/froth interface level in the second column is kept above the bottom of the first column, and the air flow rate into the top of the first column is controlled to keep the first column substantially full of foam.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: July 26, 1994
    Assignee: The University of New Castle Research Associates Limited of University of New Castle
    Inventor: Graeme J. Jameson
  • Patent number: 5188726
    Abstract: A method of operating a plurality of minerals separation flotation cells (1,2) each having a feed inlet (9,14) a values outlet (11) and a gangue outlet (12,15), and each flotation cell being located at substantially the same level. A feed box (3) is located alongside the flotation cells (1,2) which are connected in series such that the outlet (7) from the feed box (3) is connected via a first pump (8) to the feed inlet (9) of a first flotation cell (1), the gangue outlet (12) from the first flotation cell (2) is connected via a second pump (13) to the feed inlet (14) of the next flotation cell (2), and so on until all of the flotation cells are connected in series. Each flotation cell also has a recycle outlet (19) from the lower part of the flotation cell arranged to return a predetermined proportion of the material flowing through that flotation cell to the feed box (3).
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: February 23, 1993
    Assignee: University of Newcastle Research Associates Ltd.
    Inventor: Graeme J. Jameson
  • Patent number: 4959183
    Abstract: Aeration apparatus for use in recovering values from slurries in a flotation cell wherein the impeller has a plurality of blades extending generally radially and downwardly on its lower surface, each blade extending from the hollow drive shaft of the rotor to the periphery of the impeller and generally increasing in height radially outwardly along the length of the blade. In the preferred form of the invention a stator is provided having corresponding radial blades located beneath the impeller.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: September 25, 1990
    Inventor: Graeme J. Jameson
  • Patent number: 4938865
    Abstract: A method and apparatus for the benefication of mineral ores by the flotation method whereby a slurry is introduced under pressure into the top of a first column through a downwardly facing nozzle, and air is entrained into the slurry forming a downwardly moving foam bed in the first column. The foam bed passes from the bottom of the first column into a second column where the froth and liquid separate, the froth carrying the values floating upwardly and over a weir and the liquid being drained with the gangue. The liquid/froth interface level in the second column is kept above the bottom of the first column, and the air flow rate into the top of the first column is controlled to keep the first column substantially full of foam.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: July 3, 1990
    Assignee: University of Newcastle Research Assoc., Ltd.
    Inventor: Graeme J. Jameson
  • Patent number: 4668382
    Abstract: A method of improving the quality of froth removed from a minerals separation flotation cell by providing converging side walls to crowd the froth into a narrower chimney and thereby increase the froth height. The riser is constructed so that the height of the froth from the pulp/froth interface to the froth overflow weir is greater than the natural froth height in a similar parallel-sided flotation cell.
    Type: Grant
    Filed: August 13, 1985
    Date of Patent: May 26, 1987
    Assignee: 501 University Newcastle Research Associates Limited
    Inventor: Graeme J. Jameson