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Thread: Vibrating Screen for Aluminum Chips

  1. #1

    Vibrating screen ( Ali Machining Swarf)

    A briquetting project, for aliuminium chip (swarf). the swarf is from CNC machining centres and is appoximatly 10mm dia curles

    This is bulk feed by a feed hopper (3 cuMts) and 150mm screw to the briquetting machine with out any problems

    The hopper is loaded via FLT tripping skips (240kgs) onto a vibrating 30x30mm mesh screen (3000X1200MM).
    This is to remove the large tooling lugs 20x20 by 40-100mm long which would jam the briquetting machine

    The problem is that the screen will not seive the swarf, even with enough vibration and varing frequancies, it seems to be that the mass of the swarf is locking togerther and just siting on top of the screen. If smaller amounts of the swarf or the full load is spead across the full screen, by the same method of loading the screen works well

    One posible option we have come up with is placing a coarse screen (50x50mm) above the 30x30mm screen to take the bulk of the weight of the material this would be vibrated with the fine screen

  2. #2
    George Baker

    George Baker

    Vice President- Corporate Communications

    Assinck Ltd. [eDir]

    Assinck Ltd.

    Professional Experience 39 Years / 9 Month George Baker has 39 Years and 9 Month professional experience

    Discussions 883 George Baker acceded to 883 discussions, Articles 0 George Baker wrote 0 articles, Publications 0 George Baker Baker released 0 publications

    Searching nothing specified

    Know-How Screening (373) George Baker used this tag 373 times, Manufacturer (110) George Baker used this tag 110 times, Conveying (28) George Baker used this tag 28 times

    You Have a Surge or Bed Depth Problem

    Your idea of what we call a "load relieving deck" is a good one and is commonly used or practiced. Feed TO the screen device is CRITICAL..We figure 90 percent of the problems in the field on a new commissioned startup is IMPROPER FEED TO the vibrating screen. We need to achieve proper spread across the full width of the screen to make sure the BED DEPTH rules are adhered to for vibrating equipment.

    GEN RULE OF THUMB: on bed depth: by VSMA guidelines is....you are allowed max 4 times the opening size in the deck when measuring the depth of the bed of material at the discharge end of the vibrating device. IE: if you had a 1/2" clear opening in the wirecloth.....you would be allowed 2" maximum depth at the discharge end of the screen - no matter how long the screen deck. What this ensures, is that the material when thrown up in the air to stratify the coarse.......the bed is not too thick so as to NOT ALLOW the fines to get out and seek the opening in the aperture. TOO DEEP equals improper or no stratification and FINES CARRYOVER. A load relieving deck splits the load between two decks and can help.

    If this stuff has cooling oils on it.......this has a tendency to make the chips STICK TOGETHER.... and you may want to use a simple DETERGENT wash system and this will unstick them and allow better separation.

    HOPE THIS HELPS..........Let me know if further questions....

    GEORGE BAKER - MODERATOR

  3. #3
    Author Guest

    Vibrating screen ( Ali Machining Swarf)

    Suggest you change to a circular Vibro Energy screen as made by William Boulton Vibro Energy Ltd.

    These screens are in operation performing this very duty, their adjustable, high amplitude design prevents jamming.

    Contact : William Boulton Vibro Energy Ltd, Croft Street, Burslem, Stoke-on-Trent, England.
    Tel. 01782 816158
    E-mail:sales@williamboulton.co.uk

  4. #4
    martin c Guest
    Dear Sir
    Russell finex Ltd are the UKs largest vibratory screen manufactuer and can offer many types of screen to solve your problem.
    Swarf is notoriously difficult to screen but we use special media to do it.
    To arrange a local Eng to call and arrange a free demo please contact Sales@russellfinex.com

  5. #5

    Talking Ali swarf Vibrating screen

    George

    Just a bit of freed back the modifications you suggested in the reliving deck worked a treat. the hopper and screen have been fully operational for over one year with no breakdowns , blockages


    Thanks very much, i will not be caught out by that one again

    regards

    Jeff Jones

  6. #6
    George Baker

    George Baker

    Vice President- Corporate Communications

    Assinck Ltd. [eDir]

    Assinck Ltd.

    Professional Experience 39 Years / 9 Month George Baker has 39 Years and 9 Month professional experience

    Discussions 883 George Baker acceded to 883 discussions, Articles 0 George Baker wrote 0 articles, Publications 0 George Baker Baker released 0 publications

    Searching nothing specified

    Know-How Screening (373) George Baker used this tag 373 times, Manufacturer (110) George Baker used this tag 110 times, Conveying (28) George Baker used this tag 28 times

    Feedback Appreciated

    Jeff: Thankyou for the feedback on our successes, that we love to hear.

    SOMETIMES we win>>>>>>>> SOMETIMES we do not

    Keep smiling........George Baker (CANADA)

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