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Thread: Overload During Ratholing Situation

  1. #1
    matteo artioli Guest

    Question Overload During Ratholing Situation


    Gentlemen,

    I have a problem to solve and I would like to submit it to you.

    I have got a 16 m high, 6 m diameter silo, inside of it there is a powder with density of 0.86 kg/dm3. Under the silo there is a bin activator of 2.35 m diameter.

    If I consider that into the silo a ratholing situation can happen, my problem is to calculate the load on the bin activator when, suddenly, the material stoked on the wall fell down.

    Are there some articles/books in which I can find some formulas that take into consideration the weight and also the overload due to fall down of the powder?

    If someone knows this issue, please give me some information about it

    Thank you.

    Best Regards

    Artioli Matteo

  2. #2

    Silo

    DEAR, Artioli Matteo
    PLEASE PROVIDE US THE SKETCH, WE WILL SOLVE YOUR PROBLEM
    BY INSTALLING A CONE(A SPECIAL DESIGN) IN ITHE SILO.WE HAVE DESIGNED SILO FEEDING AND DISCHARGE SYSTEMS FOR MORE THEN 50 SILOS.
    REGARDS.
    ANIL SETH
    981105565O MOBILE
    Last edited by libranengineering; 1st March 2004 at 14:26.

  3. Eliminating Ratholing - The Acoustic Way!

    My company can offer you an inexpensive, totally proven and effective way to prevent material from building up on the side walls of your silos, which then leads to ratholing. Primasonics Acoustic Cleaners have been employed in over 35 countries worldwide within a wide range of silos and hoppers to both prevent ratholing and also eliminate material building up and bridging over the outlet.

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    Regards

    Donald F Cameron
    Primasonics International Limited
    www.primasonics.com
    sound@primasonics.com

  4. silo hang up

    the effect that your ratholed material will have is simply a total of
    one gravity or g force weight of the material total falling down to the bottom of the silo, I would definitely say that if you really concerned and intend to keep this silo, you should install very small apron feeder under it and your hang up problems will probably disappear as the movement of the apron feeder will create enough vibration to keep the material flowing unless it is very wet material. you also do not state as to the loading area in this silo- if it is not centered the material will find its natural angle of repose and every time you turn of the bin vibrator it will pack itself even tighter untill gravity assumes its duties and it falls in toatal to the bottom of the silo.

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