Christian Alexander Kujawa

US Patent:

6832690, Dec 21, 2004

Filed:

Jan 2, 2003

Appl. No.:

10/293413

Inventors:

Christian Kujawa - Highlands Ranch CO

Assignee:

Outokumpu Oyj - Espoo

International Classification:

B03D 116

US Classification:

209169

Abstract:

The Invention relates to a flotation machine ( ) which at least consists of a flotation cell ( ) having a means for feeding slurry in the flotation cell, a gas dispersion mechanism ( ) for feeding gas into the slurry and producing froth, a means for removing froth from the flotation cell and a means for removing tailings from the flotation cell, when there is arranged at least one guiding device ( ) near the gas dispersion mechanism ( ) in order to guide the dispersed gas ( ) away from the gas dispersion mechanism ( ).

US Patent:

8276761, Oct 2, 2012

Filed:

Jul 2, 2009

Appl. No.:

12/497042

Inventors:

Christian Kujawa - Highlands Ranch CO, US

Assignee:

OUTOTEC OYJ - Espoo

International Classification:

B03D 1/14
B03D 1/16
B03D 1/20
C10G 1/00
C10G 1/04

US Classification:

209164, 209168, 209169, 208390, 208425

Abstract:

A froth flotation method and apparatus for extracting a valuable substance from a slurry comprising a mixture of solid phase, liquid phase and said substance. A gas dispersing mechanism () feeds gas into the slurry () in a flotation vessel () to infuse gas bubbles into the slurry. The slurry is agitated in the flotation vessel () for dispersing the gas bubbles into the slurry. The gas bubbles capture the valuable substance from the slurry and form a froth phase F above the slurry phase S. The froth phase F exits the vessel by overflow. Continuously moving negative pressure zones () are mechanically generated by rake blades () in the froth phase (F). The negative pressure zones () extend from the froth phase (F) to the slurry phase (S). The negative pressure zones () capture unwanted slurry and liquid pockets () entrained from the slurry phase to the froth phase (F) and form paths for guiding said unwanted slurry and liquid pockets () via said paths from the froth phase (F) downwardly back to the slurry phase (S).

US Patent:

20040089595, May 13, 2004

Filed:

Nov 13, 2002

Appl. No.:

10/293404

Inventors:

Christian Kujawa - Highlands Ranch CO, US

International Classification:

C02F001/24

US Classification:

210/221200

Abstract:

The invention relates to a flotation machine () which at least contains a flotation cell () having a means for feeding slurry in the flotation cell, gas dispersion mechanism () for feeding gas into the slurry and producing froth and aerated slurry (), a means for removing froth () from the flotation cell and a means for removing tailings from the flotation cell, wherein there is arranged at least one separation element () in order to separate the upward going flow () and the returning flow () from each other in the cell ().

US Patent:

20040089596, May 13, 2004

Filed:

Nov 13, 2002

Appl. No.:

10/293406

Inventors:

Christian Kujawa - Highlands Ranch CO, US

International Classification:

C02F001/24

US Classification:

210/221200

Abstract:

Invention relates to a flotation machine which at least contains a flotation cell () having a means for feeding slurry in the flotation cell, a means for feeding gas into the slurry and producing aerated slurry () and froth (), a means for removing froth from the flotation cell and a means for removing tailings from the flotation cell, when the flotation cell () is provided with at least one separation device (), which is arranged to float at the interface () between phases having different densities, such as froth () and aerated slurry (), in order to improve the removal of froth phase from the flotation cell.

US Patent:

20210339172, Nov 4, 2021

Filed:

Jul 19, 2021

Appl. No.:

17/379916

Inventors:

- Golden CO, US
Christian Kujawa - Golden CO, US

Assignee:

Paterson & Cooke Ideas, Ltd. - Golden CO

International Classification:

B01D 21/24
B01D 21/00

Abstract:

A feedwell comprising a plurality of holes disposed in a bottom thereof, at least some of the holes having a tube disposed thereabout which extends downward or otherwise away from an interior of the feedwell. Optionally, a large center hole can be provided and it can have a tube disposed around it. By providing a plurality of holes spread across a large portion of the bottom of the feedwell, lower velocity flow rates from the feedwell to a sedimentation chamber can be provided, thus reducing induced turbulence in the fluid within the sedimentation chamber, while still providing sufficient separation of the feedwell from the sedimentation chamber so that the contents of the feedwell can be properly and adequately mixed.

US Patent:

20200215462, Jul 9, 2020

Filed:

Mar 19, 2020

Appl. No.:

16/824497

Inventors:

- Golden CO, US
Christian Kujawa - Golden CO, US

Assignee:

Paterson & Cooke Ideas, Ltd. - Golden CO

International Classification:

B01D 21/24
B01D 21/00

Abstract:

A feedwell comprising a plurality of holes disposed in a bottom thereof, at least some of the holes having a tube disposed thereabout which extends downward or otherwise away from an interior of the feedwell. Optionally, a large center hole can be provided and it can have a tube disposed around it. By providing a plurality of holes spread across a large portion of the bottom of the feedwell, lower velocity flow rates from the feedwell to a sedimentation chamber can be provided, thus reducing induced turbulence in the fluid within the sedimentation chamber, while still providing sufficient separation of the feedwell from the sedimentation chamber so that the contents of the feedwell can be properly and adequately mixed.

US Patent:

20180243668, Aug 30, 2018

Filed:

Apr 27, 2018

Appl. No.:

15/965599

Inventors:

- Golden CO, US
Christian Kujawa - Golden CO, US

International Classification:

B01D 21/24
B01D 21/00

Abstract:

A feedwell comprising a plurality of holes disposed in a bottom thereof, at least some of the holes having a tube disposed thereabout which extends downward or otherwise away from an interior of the feedwell. Optionally, a large center hole can be provided and it can have a tube disposed around it. By providing a plurality of holes spread across a large portion of the bottom of the feedwell, lower velocity flow rates from the feedwell to a sedimentation chamber can be provided, thus reducing induced turbulence in the fluid within the sedimentation chamber, while still providing sufficient separation of the feedwell from the sedimentation chamber so that the contents of the feedwell can be properly and adequately mixed.

US Patent:

20180133622, May 17, 2018

Filed:

Nov 16, 2017

Appl. No.:

15/815474

Inventors:

- Golden CO, US
Christian Kujawa - Golden CO, US

Assignee:

Paterson & Cooke Ideas, Ltd. - Golden CO

International Classification:

B01D 21/00
B01D 21/24

Abstract:

Dilution check valves, pumps, systems, and methods of use, useful for dilution of incoming feed into a feedwell or feed system that can be easily installed and removed on solid/liquid separation units. The feed dilution apparatuses or systems can be installed in a single location or in multiple locations around a feedwell, transferring supernatant drawn from single or multiple locations within a solid/liquid separation tank. Optionally, an in-line turbine style pump and/or downward draft configuration can be used to provide efficient pumping and accurate adjustment of volume by increasing or decreasing rotation speed. The feed dilution pumps can optionally be installed using a quick fit system that allows removal and replacement during operation without the need for mobile cranes or heavy lifting equipment.