Eric S Yan

US Patent:

6797908, Sep 28, 2004

Filed:

Apr 10, 2002

Appl. No.:

10/120017

Inventors:

Eric S. Yan - Orange Park FL
Thomas J. Grey - Jacksonville FL
Kevin R. McHenry - Jacksonville FL

Assignee:

Outokumpu Oyj - Espoo

International Classification:

B03C 706

US Classification:

209131, 2091271, 2091274, 209128, 209129, 209130

Abstract:

The electrostatic classifier and separator is supported by a housing and includes a corona classifier section for classifying particulate materials according to size. Corona element supplies mobile ions for bombarding particulate materials dropping down a passageway from a reservoir. A splitter and screen may be included in the passageway to direct particulate materials into respective fractions. First separator section receives fine to middle size fractions and second separator section receives middle to coarse size fractions. A support frame having adjustable slots supports a plurality of static electrodes. Corona element for emitting a corona charge is spaced generally in a first quadrant of first separator section. A rotatable brush and an alternating current wiper may be included for removing fine to middle size nonconductive fractions from first separator section. Additional splitter and/or a baffle may be included to help guide particulate material fractions into respective containers, onto a conveyor belt or the like.

US Patent:

6951992, Oct 4, 2005

Filed:

Feb 27, 2003

Appl. No.:

10/376190

Inventors:

Eric S. Yan - Orange Park FL, US
Kevin R. McHenry - Jacksonville FL, US

Assignee:

Outokumpu Oyj - Espoo

International Classification:

B03C007/01

US Classification:

2091271, 209128, 2091272, 209130, 209129

Abstract:

A corona and static electrode assembly is attachable to a frame of an existing electrostatic separator and includes a pair of oppositely spaced end panels and an elongate corona support member disposed inwardly of and supported by the respective end panels. The corona support member is preferably formed from a single piece of rigid material and has a substantially L-shape for directing an electrostatic field intensity towards the outer surface of a rotating drum. A pair of spaced spacers are connected to and laterally extend from the corona support member and an elongate conductive wire extends between the pair of spacers. The wire is preferably supported between the spacers and threaded bolts passing therethrough, respectively, can adjust its tension. A plurality of elongate static electrodes are spaced from the wire and are connected between the pair of end panels. The assembly may further include a pair of end shields, a pair of support members and an elongate support member for assisting to maintain the corona support member and static electrodes in a fixed position and for attaching the assembly to a frame of an existing electrostatic separator.

US Patent:

7045734, May 16, 2006

Filed:

Nov 21, 2003

Appl. No.:

10/718844

Inventors:

Eric S. Yan - Orange Park FL, US
Thomas J. Grey - Jacksonville FL, US

Assignee:

Outokumpu Oyj - Espoo

International Classification:

B03C 7/01

US Classification:

2091271, 209128, 209129, 209130, 209131

Abstract:

A D. C. voltage altering device includes at least one spark induction power conditioner including a first electrode connectable to a high voltage D. C. power source and a second electrode spaced from the first electrode and forming a discharging gap therebetween. The second electrode is connectable to a predetermined section of a physical separator and at least one of the electrodes is selectively positionable for altering spatial distance between same. The power conditioner induces a predetermined large amplitude, high frequency current ripple to the second electrode for creating a fluctuating voltage and fluctuating electrostatic field and maintaining continuous current flow through the gap without reversal of polarity. The spark induction power conditioner further includes a dielectric base for housing the electrodes and a plurality of fastening members threadably positionable through the base and engageable with the electrodes so that the discharging gap between the electrodes can be selectively adjusted.

US Patent:

7973258, Jul 5, 2011

Filed:

Jan 30, 2009

Appl. No.:

12/362534

Inventors:

Eric S. Yan - Erie PA, US
Michael Mankosa - Erie PA, US
Jaisen Kohmuench - Erie PA, US

Assignee:

Eriez Manufacturing Co. - Erie PA

International Classification:

B03C 7/00

US Classification:

209129, 209 121, 209 122, 2091271, 209128, 209130

Abstract:

A lifting electrode for a high-tension electrostatic separator. The high tension electrostatic separator having a rotating drum that is connected to ground and an ionizing electrode that generates a corona discharge of charged ions. The lifting electrode comprising a composite of a non-conductive polymer impregnated with conductive particles.

US Patent:

20050092656, May 5, 2005

Filed:

Nov 4, 2003

Appl. No.:

10/700704

Inventors:

Eric Yan - Orange Park FL, US
Bo Arvidson - Ponte Vedra Beach FL, US

International Classification:

B04B005/10

US Classification:

209012200, 209218000

Abstract:

A magnetic separation system for separating magnetic from non-magnetic particles employing a dry drum/belt magnetic separator includes an electrostatic separator, including electrodes located closely adjacent a moving belt overlying the magnetic drum for attracting charged non-magnetic particles on the belt to remove such particles from the belt. The electrodes are formed as an elongate metal rod coated with a non-electrically conductive material. The rods are positioned lengthwise in a manner such that the rod is substantially transverse the direction of movement of the belt. The system also includes an ionizer for creating an ion cloud directed toward a surface of the belt for electrically neutralizing the surface of the belt.

US Patent:

20080251427, Oct 16, 2008

Filed:

Apr 11, 2008

Appl. No.:

12/101376

Inventors:

Michael J. Mankosa - Erie PA, US
Jaisen Kohmuench - Erie PA, US
Eric S. Yan - Erie PA, US
Gerald H. Luttrell - Blacksburg VA, US

International Classification:

B03D 1/14
B03D 1/24
B03D 1/16
B01F 3/04
C10J 1/08

US Classification:

209164, 209170, 2611211, 261 93

Abstract:

A flotation separation system is provided for partitioning a slurry that includes a hydrophobic species which can adhere to gas bubbles formed in the slurry. The flotation separation system comprises a flotation separation cell that includes a sparger unit and a separation tank. The sparger unit has a slurry inlet for receiving slurry and a gas inlet to receive gas with at least enough pressure to allow bubbles to form in the slurry within the sparger unit. The sparger unit includes a sparging mechanism constructed to disperse gas bubbles within the slurry. The sparging mechanism sparges the gas bubbles to form a bubble dispersion so as to cause adhesion of the hydrophobic species to the gas bubbles substantially within the sparger unit while causing a pressure drop of about 10 psig or less across the sparging mechanism. The sparger unit includes a slurry outlet to discharge the slurry and the bubble dispersion into the separation tank.

US Patent:

63296233, Dec 11, 2001

Filed:

Jun 23, 2000

Appl. No.:

9/603271

Inventors:

Eric S. Yan - Orange Park FL
Thomas J. Grey - Jacksonville FL
Timo U. Niitti - Ponte Vedra FL

Assignee:

Outokumpu Oyj

International Classification:

B03C 712

US Classification:

209129

Abstract:

This invention relates to an apparatus and method for electrostatically separating particles having different electrostatic properties. The apparatus involves two thin box-shaped electrodes facing each other as mirror-images and charged with a voltage field causing the opposing electrodes to assume opposite charges, and then passing a mixture of particles through the field so as to make the particles travel toward the respective electrodes through a perforated plate or screen and to a solid back plate and then to fall by gravity through a splitter adjusted to separate particles attracted by one charge from particles attracted by another charge. A vibrator is attached to each electrode, which is isolated for movement by spaced vibration isolators to shake off any particles stuck to the electrodes.

US Patent:

63201488, Nov 20, 2001

Filed:

Aug 5, 1999

Appl. No.:

9/368945

Inventors:

Oh-Hyung Han - Kwangju, KR
Eric S. Yan - Jacksonville FL
Byung-Wook Park - Pacific A-202 Seoul, KR

International Classification:

B03C 700

US Classification:

2091273

Abstract:

A method of separating particulate materials of different properties has been developed. It consists of feeding a mixture of dry, powdered materials to one end of the surface of a planar electrode, which is vibrating to move the particles forward. At least one type of the particulate materials acquires a charge via conduction or triboelectrification. Those particles that acquire charges of the same sign as that of the planar electrode are lifted and collected at the V-shaped counter electrodes installed above. The new separation method is particularly useful for removing unburned carbons from fly ash and any other conducting materials from nonconducting ones.