Utah SME Section

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Section Meeting - February 9, 2017

  • 1.  Section Meeting - February 9, 2017

    Posted 02-05-2017 09:51 PM
    If you prefer, you can view the announcement on our web site at

    The meeting is the second Thursday this month due to the SME annual
    meeting in Denver.

    SME Utah Section Meeting

    Lance Christodoulou
    Manager - Global Testing Services
    Eriez Floation

    An alternative approach to base and precious metal flow sheet design

    It is well understood that the conventional froth flotation process is
    strongly dependent on particle size. In the case of sulfide minerals the
    typical flotation feed size is between 30-200micron. Particles outside
    of this range characteristically show poor recoveries in industrial
    operations and consequently grinding circuits are designed to produce
    feedstocks within this size range. Recent studies on tailings and fresh
    ore applications show that it is possible to recover coarser particles
    with a fluidized-bed flotation system called the HydroFloat. The ability
    to recover these coarse particles has the potential to allow for a
    coarser grind size in milling circuits promoting either higher
    throughput or lower energy demand along with the opportunity to now
    design plants with split-feed circuitry.

    This split-feed approach allows for processing of material with
    technologies specifically suited to certain size classes of feedstock,
    allowing for increased metal recovery. Coarse material can be
    successfully processed utilizing the HydroFloat and finer material
    processed with conventional or high-intensity staged flotation devices.
    Recent pilot-plant trials, on a sulfide tailings stream, utilizing a
    high-intensity flotation system known as the StackCell showed that
    flotation kinetics are up to 4 times quicker than conventional flotation
    cells. This finding would suggest that the opportunity exists to reduce
    the size of traditional rougher flotation circuits.

    Utilizing these novel technologies it is possible to take an alternative
    approach to flow sheet design with focus on reduced power consumption,
    reduced capital expenditure and potential gains in water recovery. This
    presentation covers the work performed to date and the anticipated gains
    by following a different approach in circuit design.

    February 9, 2017

    Social Hour—6:00 to 7:00
    Dinner—7:00 to 7:30
    Presentation—7:30 to 8:30

    7158 S FLSmidth Drive
    Midvale, UT 84047-5559

    Please park in the West parking lot and enter through the
    atrium door between the new and old buildings.

    Google Map:

    Members and Guests $20.00
    Students $5.00

    E-mail: rsvp@sme-utah.com
    Phone: 801 872-8150

    Darrel Cameron
    Computer Programmer
    Bountiful UT United States
    (801) 860-4792